Merge pull request #9 from SciProgCentre/dev

0.2.0

.github/workflows/build.yml

@@ -0,0 +1,24 @@
+name: Gradle build
+
+on:
+  push:
+    branches: [ dev, master ]
+  pull_request:
+
+jobs:
+  build:
+    runs-on: windows-latest
+    timeout-minutes: 20
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-java@v3.5.1
+        with:
+          java-version: '11'
+          distribution: 'liberica'
+          cache: 'gradle'
+      - name: Gradle Wrapper Validation
+        uses: gradle/wrapper-validation-action@v1.0.4
+      - name: Gradle Build
+        uses: gradle/gradle-build-action@v2.4.2
+        with:
+          arguments: test jvmTest

.github/workflows/gradle.yml

@@ -1,17 +0,0 @@
-name: Gradle build
-
-on: [push]
-
-jobs:
-  build:
-
-    runs-on: ubuntu-latest
-
-    steps:
-    - uses: actions/checkout@v1
-    - name: Set up JDK 11
-      uses: actions/setup-java@v1
-      with:
-        java-version: 11
-    - name: Build with Gradle
-      run: ./gradlew build

.github/workflows/pages.yml

@@ -0,0 +1,31 @@
+name: Dokka publication
+
+on:
+  workflow_dispatch:
+  release:
+    types: [ created ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    timeout-minutes: 40
+    steps:
+      - uses: actions/checkout@v3.0.0
+      - uses: actions/setup-java@v3.0.0
+        with:
+          java-version: 11
+          distribution: liberica
+      - name: Cache konan
+        uses: actions/cache@v3.0.1
+        with:
+          path: ~/.konan
+          key: ${{ runner.os }}-gradle-${{ hashFiles('*.gradle.kts') }}
+          restore-keys: |
+            ${{ runner.os }}-gradle-
+      - uses: gradle/gradle-build-action@v2.4.2
+        with:
+          arguments: dokkaHtmlMultiModule --no-parallel
+      - uses: JamesIves/github-pages-deploy-action@v4.3.0
+        with:
+          branch: gh-pages
+          folder: build/dokka/htmlMultiModule

.github/workflows/publish.yml

@@ -0,0 +1,50 @@
+name: Gradle publish
+
+on:
+  workflow_dispatch:
+  release:
+    types: [ created ]
+
+jobs:
+  publish:
+    environment:
+      name: publish
+    strategy:
+      matrix:
+        os: [ macOS-latest, windows-latest ]
+    runs-on: ${{matrix.os}}
+    steps:
+      - uses: actions/checkout@v3.0.0
+      - uses: actions/setup-java@v3.10.0
+        with:
+          java-version: 11
+          distribution: liberica
+      - name: Cache konan
+        uses: actions/cache@v3.0.1
+        with:
+          path: ~/.konan
+          key: ${{ runner.os }}-gradle-${{ hashFiles('*.gradle.kts') }}
+          restore-keys: |
+            ${{ runner.os }}-gradle-
+      - name: Publish Windows Artifacts
+        if: matrix.os == 'windows-latest'
+        uses: gradle/gradle-build-action@v2.4.2
+        with:
+          arguments: |
+            publishAllPublicationsToSpaceRepository
+            -Ppublishing.targets=all
+            -Ppublishing.space.user=${{ secrets.SPACE_APP_ID }}
+            -Ppublishing.space.token=${{ secrets.SPACE_APP_SECRET }}
+      - name: Publish Mac Artifacts
+        if: matrix.os == 'macOS-latest'
+        uses: gradle/gradle-build-action@v2.4.2
+        with:
+          arguments: |
+            publishMacosX64PublicationToSpaceRepository
+            publishMacosArm64PublicationToSpaceRepository
+            publishIosX64PublicationToSpaceRepository
+            publishIosArm64PublicationToSpaceRepository
+            publishIosSimulatorArm64PublicationToSpaceRepository
+            -Ppublishing.targets=all
+            -Ppublishing.space.user=${{ secrets.SPACE_APP_ID }}
+            -Ppublishing.space.token=${{ secrets.SPACE_APP_SECRET }}

.gitignore

@@ -1,7 +1,11 @@
 # Created by .ignore support plugin (hsz.mobi)
 .idea/
 .gradle
+
 *.iws
+*.iml
+*.ipr
+
 out/
 build/
 !gradle-wrapper.jar

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "magix/rfc"]
+	path = magix/rfc
+	url = https://github.com/waltz-controls/rfc

.space.kts

@@ -0,0 +1,45 @@
+import kotlin.io.path.readText
+
+job("Build") {
+    gradlew("spc.registry.jetbrains.space/p/sci/containers/kotlin-ci:1.0.3", "build")
+}
+
+job("Publish") {
+    startOn {
+        gitPush { enabled = false }
+    }
+    container("spc.registry.jetbrains.space/p/sci/containers/kotlin-ci:1.0.3") {
+        env["SPACE_USER"] = "{{ project:space_user }}"
+        env["SPACE_TOKEN"] = "{{ project:space_token }}"
+        kotlinScript { api ->
+
+            val spaceUser = System.getenv("SPACE_USER")
+            val spaceToken = System.getenv("SPACE_TOKEN")
+
+            // write the version to the build directory
+            api.gradlew("version")
+
+            //read the version from build file
+            val version = java.nio.file.Path.of("build/project-version.txt").readText()
+
+            val revisionSuffix = if (version.endsWith("SNAPSHOT")) {
+                "-" + api.gitRevision().take(7)
+            } else {
+                ""
+            }
+
+            api.space().projects.automation.deployments.start(
+                project = api.projectIdentifier(),
+                targetIdentifier = TargetIdentifier.Key("maps-kt"),
+                version = version+revisionSuffix,
+                // automatically update deployment status based on the status of a job
+                syncWithAutomationJob = true
+            )
+            api.gradlew(
+                "publishAllPublicationsToSpaceRepository",
+                "-Ppublishing.space.user=\"$spaceUser\"",
+                "-Ppublishing.space.token=\"$spaceToken\"",
+            )
+        }
+    }
+}

.space/CODEOWNERS

@@ -0,0 +1 @@
+./space/* "Project Admin"

CHANGELOG.md

@@ -0,0 +1,32 @@
+# Changelog
+
+## Unreleased
+
+### Added
+- Core interfaces for building a device server
+- Magix service for binding controls devices (both as RPC client and server)
+- A plugin for Controls-kt device server on top of modbus-rtu/modbus-tcp protocols
+- A client and server connectors for OPC-UA via Eclipse Milo
+- Implementation of byte ports on top os ktor-io asynchronous API
+- Implementation of direct serial port communication with JSerialComm
+- A combined Magix event loop server with web server for visualization.
+- An API for stand-alone Controls-kt device or a hub.
+- An implementation of controls-storage on top of JetBrains Xodus.
+- A kotlin API for magix standard and some zero-dependency magix services
+- Java API to work with magix endpoints without Kotlin
+- MQTT client magix endpoint
+- RabbitMQ client magix endpoint
+- Magix endpoint (client) based on RSocket
+- A magix event loop implementation in Kotlin. Includes HTTP/SSE and RSocket routes.
+- Magix history database API
+- ZMQ client endpoint for Magix
+
+### Changed
+
+### Deprecated
+
+### Removed
+
+### Fixed
+
+### Security

README.md

@@ -1,25 +1,28 @@
 [![JetBrains Research](https://jb.gg/badges/research.svg)](https://confluence.jetbrains.com/display/ALL/JetBrains+on+GitHub)
 
-# DataForge-control
+# Controls.kt
 
-DataForge-control is a data acquisition framework (work in progress). It is based on DataForge, a software framework for automated data processing.
+Controls.kt (former DataForge-control) is a data acquisition framework (work in progress). It is based on DataForge, a software framework for automated data processing.
 This repository contains a prototype of API and simple implementation
 of a slow control system, including a demo.
 
-DataForge-control uses some concepts and modules of DataForge, 
-such as `Meta` (immutable tree-like structure) and `MetaItem` (which 
-includes a scalar value, or a tree of values, easily convertable to/from JSON 
-if needed).  
+Controls.kt uses some concepts and modules of DataForge,
+such as `Meta` (tree-like value structure).
 
 To learn more about DataForge, please consult the following URLs:
- * [Kotlin multiplatform implementation of DataForge](https://github.com/mipt-npm/dataforge-core)  
- * [DataForge documentation](http://npm.mipt.ru/dataforge/) 
- * [Original implementation of DataForge](https://bitbucket.org/Altavir/dataforge/src/default/)
+* [Kotlin multiplatform implementation of DataForge](https://github.com/mipt-npm/dataforge-core)
+* [DataForge documentation](http://npm.mipt.ru/dataforge/)
+* [Original implementation of DataForge](https://bitbucket.org/Altavir/dataforge/src/default/)
 
 DataForge-control is a [Kotlin-multiplatform](https://kotlinlang.org/docs/reference/multiplatform.html)
 application. Asynchronous operations are implemented with
 [kotlinx.coroutines](https://github.com/Kotlin/kotlinx.coroutines) library.
 
+## Materials and publications
+
+* Video - [A general overview seminar](https://youtu.be/LO-qjWgXMWc)
+* Video - [A seminar about the system mechanics](https://youtu.be/wES0RV5GpoQ)
+* Article - [A Novel Solution for Controlling Hardware Components of Accelerators and Beamlines](https://www.preprints.org/manuscript/202108.0336/v1)
 
 ### Features
 Among other things, you can:
@@ -28,19 +31,173 @@ Among other things, you can:
 - Property values can be cached in the system and requested from devices as needed, asynchronously.
 - Connect devices to event bus via bidirectional message flows.
 
-### `dataforge-control-core` module packages
+Example view of a demo:
 
-- `api` - defines API for device management. The main class here is 
-[`Device`](dataforge-device-core/src/commonMain/kotlin/hep/dataforge/control/api/Device.kt).
-Generally, a Device has Properties that can be read and written. Also, some Actions
-can optionally be applied on a device (may or may not affect properties). 
+![](docs/pictures/demo-view.png)
 
-- `base` - contains baseline `Device` implementation 
-[`DeviceBase`](dataforge-device-core/src/commonMain/kotlin/hep/dataforge/control/base/DeviceBase.kt)
-and property implementation, including property asynchronous flows.
+## Documentation
+
+* [Creating a device](docs/Device%20and%20DeviceSpec.md)
+
+## Modules
+
+
+### [controls-core](controls-core)
+> Core interfaces for building a device server
+>
+> **Maturity**: EXPERIMENTAL
+>
+> **Features:**
+> - [device](controls-core/src/commonMain/kotlin/space/kscience/controls/api/Device.kt) : Device API with subscription (asynchronous and pseudo-synchronous properties)
+> - [deviceMessage](controls-core/src/commonMain/kotlin/space/kscience/controls/api/DeviceMessage.kt) : Specification for messages used to communicate between Controls-kt devices.
+> - [deviceHub](controls-core/src/commonMain/kotlin/space/kscience/controls/api/DeviceHub.kt) : Grouping of devices into local tree-like hubs.
+> - [deviceSpec](controls-core/src/commonMain/kotlin/space/kscience/controls/spec) : Mechanics and type-safe builders for devices. Including separation of device specification and device state.
+> - [deviceManager](controls-core/src/commonMain/kotlin/space/kscience/controls/manager) : DataForge DI integration for devices. Includes device builders.
+> - [ports](controls-core/src/commonMain/kotlin/space/kscience/controls/ports) : Working with asynchronous data sending and receiving raw byte arrays
+
+
+### [controls-magix](controls-magix)
+> Magix service for binding controls devices (both as RPC client and server)
+>
+> **Maturity**: EXPERIMENTAL
+>
+> **Features:**
+> - [controlsMagix](controls-magix/src/commonMain/kotlin/space/kscience/controls/client/controlsMagix.kt) : Connect a `DeviceManage` with one or many devices to the Magix endpoint
+> - [DeviceClient](controls-magix/src/commonMain/kotlin/space/kscience/controls/client/DeviceClient.kt) : A remote connector to Controls-kt device via Magix
+
+
+### [controls-modbus](controls-modbus)
+> A plugin for Controls-kt device server on top of modbus-rtu/modbus-tcp protocols
+>
+> **Maturity**: EXPERIMENTAL
+>
+> **Features:**
+> - [modbusRegistryMap](controls-modbus/src/main/kotlin/space/kscience/controls/modbus/ModbusRegistryMap.kt) : Type-safe modbus registry map. Allows to define both single-register and multi-register entries (using DataForge IO). 
+Automatically checks consistency.
+> - [modbusProcessImage](controls-modbus/src/main/kotlin/space/kscience/controls/modbus/DeviceProcessImage.kt) : Binding of slave (server) modbus device to Controls-kt device
+> - [modbusDevice](controls-modbus/src/main/kotlin/space/kscience/controls/modbus/ModbusDevice.kt) : A device with additional methods to work with modbus registers.
+
+
+### [controls-opcua](controls-opcua)
+> A client and server connectors for OPC-UA via Eclipse Milo
+>
+> **Maturity**: EXPERIMENTAL
+>
+> **Features:**
+> - [opcuaClient](controls-opcua/src/main/kotlin/space/kscience/controls/opcua/client) : Connect a Controls-kt as a client to OPC UA server
+> - [opcuaServer](controls-opcua/src/main/kotlin/space/kscience/controls/opcua/server) : Create an OPC UA server on top of Controls-kt device (or device hub)
+
+
+### [controls-pi](controls-pi)
+> Utils to work with controls-kt on Raspberry pi
+>
+> **Maturity**: EXPERIMENTAL
+
+### [controls-ports-ktor](controls-ports-ktor)
+> Implementation of byte ports on top os ktor-io asynchronous API
+>
+> **Maturity**: PROTOTYPE
+
+### [controls-serial](controls-serial)
+> Implementation of direct serial port communication with JSerialComm
+>
+> **Maturity**: EXPERIMENTAL
+
+### [controls-server](controls-server)
+> A combined Magix event loop server with web server for visualization.
+>
+> **Maturity**: PROTOTYPE
+
+### [controls-storage](controls-storage)
+> An API for stand-alone Controls-kt device or a hub.
+>
+> **Maturity**: PROTOTYPE
+
+### [demo](demo)
+>
+> **Maturity**: EXPERIMENTAL
+
+### [magix](magix)
+>
+> **Maturity**: EXPERIMENTAL
+
+### [controls-storage/controls-xodus](controls-storage/controls-xodus)
+> An implementation of controls-storage on top of JetBrains Xodus.
+>
+> **Maturity**: PROTOTYPE
+
+### [demo/all-things](demo/all-things)
+>
+> **Maturity**: EXPERIMENTAL
+
+### [demo/car](demo/car)
+>
+> **Maturity**: EXPERIMENTAL
+
+### [demo/echo](demo/echo)
+>
+> **Maturity**: EXPERIMENTAL
+
+### [demo/magix-demo](demo/magix-demo)
+>
+> **Maturity**: EXPERIMENTAL
+
+### [demo/many-devices](demo/many-devices)
+>
+> **Maturity**: EXPERIMENTAL
+
+### [demo/mks-pdr900](demo/mks-pdr900)
+>
+> **Maturity**: EXPERIMENTAL
+
+### [demo/motors](demo/motors)
+>
+> **Maturity**: EXPERIMENTAL
+
+### [magix/magix-api](magix/magix-api)
+> A kotlin API for magix standard and some zero-dependency magix services
+>
+> **Maturity**: EXPERIMENTAL
+
+### [magix/magix-java-endpoint](magix/magix-java-endpoint)
+> Java API to work with magix endpoints without Kotlin
+>
+> **Maturity**: EXPERIMENTAL
+
+### [magix/magix-mqtt](magix/magix-mqtt)
+> MQTT client magix endpoint
+>
+> **Maturity**: PROTOTYPE
+
+### [magix/magix-rabbit](magix/magix-rabbit)
+> RabbitMQ client magix endpoint
+>
+> **Maturity**: PROTOTYPE
+
+### [magix/magix-rsocket](magix/magix-rsocket)
+> Magix endpoint (client) based on RSocket
+>
+> **Maturity**: EXPERIMENTAL
+
+### [magix/magix-server](magix/magix-server)
+> A magix event loop implementation in Kotlin. Includes HTTP/SSE and RSocket routes.
+>
+> **Maturity**: EXPERIMENTAL
+
+### [magix/magix-storage](magix/magix-storage)
+> Magix history database API
+>
+> **Maturity**: PROTOTYPE
+
+### [magix/magix-zmq](magix/magix-zmq)
+> ZMQ client endpoint for Magix
+>
+> **Maturity**: EXPERIMENTAL
+
+### [magix/magix-storage/magix-storage-xodus](magix/magix-storage/magix-storage-xodus)
+>
+> **Maturity**: PROTOTYPE
 
-- `controllers` - implements Message Controller that can be attached to the event bus, Message 
-and Property flows.
 
 ### `demo` module
 
@@ -49,7 +206,3 @@ the current time. The device is configurable via a simple TornadoFX-based contro
 You can run a demo by executing `application/run` Gradle task.
 
 The graphs are displayed using [plotly.kt](https://github.com/mipt-npm/plotly.kt) library.
-
-Example view of a demo:
-
-![](docs/pictures/demo-view.png)

build.gradle.kts

@@ -1,30 +1,37 @@
+import space.kscience.gradle.isInDevelopment
+import space.kscience.gradle.useApache2Licence
+import space.kscience.gradle.useSPCTeam
+
 plugins {
-    id("ru.mipt.npm.project")
-    kotlin("jvm") apply false
-    kotlin("js") apply false
+    id("space.kscience.gradle.project")
 }
 
-val dataforgeVersion: String by extra("0.2.0-dev-3")
-val ktorVersion: String by extra("1.4.1")
+val dataforgeVersion: String by extra("0.6.2-dev-3")
+val ktorVersion: String by extra(space.kscience.gradle.KScienceVersions.ktorVersion)
+val rsocketVersion by extra("0.15.4")
+val xodusVersion by extra("2.0.1")
 
 allprojects {
-    repositories {
-        mavenLocal()
-        maven("https://dl.bintray.com/pdvrieze/maven")
-        maven("http://maven.jzy3d.org/releases")
-        maven("https://kotlin.bintray.com/js-externals")
-        maven("https://maven.pkg.github.com/altavir/kotlin-logging/")
+    group = "space.kscience"
+    version = "0.2.0"
+    repositories{
+        maven("https://maven.pkg.jetbrains.space/spc/p/sci/dev")
     }
-
-    group = "hep.dataforge"
-    version = "0.0.1"
 }
 
 ksciencePublish {
-    githubProject = "dataforge-control"
-    bintrayRepo = "dataforge"
+    pom("https://github.com/SciProgCentre/controls.kt") {
+        useApache2Licence()
+        useSPCTeam()
+    }
+    github("controls.kt", "SciProgCentre")
+    space(
+        if (isInDevelopment) {
+            "https://maven.pkg.jetbrains.space/spc/p/sci/dev"
+        } else {
+            "https://maven.pkg.jetbrains.space/spc/p/sci/maven"
+        }
+    )
 }
 
-apiValidation {
-    validationDisabled = true
-}
+readme.readmeTemplate = file("docs/templates/README-TEMPLATE.md")

controls-core/README.md

@@ -0,0 +1,33 @@
+# Module controls-core
+
+Core interfaces for building a device server
+
+## Features
+
+ - [device](src/commonMain/kotlin/space/kscience/controls/api/Device.kt) : Device API with subscription (asynchronous and pseudo-synchronous properties)
+ - [deviceMessage](src/commonMain/kotlin/space/kscience/controls/api/DeviceMessage.kt) : Specification for messages used to communicate between Controls-kt devices.
+ - [deviceHub](src/commonMain/kotlin/space/kscience/controls/api/DeviceHub.kt) : Grouping of devices into local tree-like hubs.
+ - [deviceSpec](src/commonMain/kotlin/space/kscience/controls/spec) : Mechanics and type-safe builders for devices. Including separation of device specification and device state.
+ - [deviceManager](src/commonMain/kotlin/space/kscience/controls/manager) : DataForge DI integration for devices. Includes device builders.
+ - [ports](src/commonMain/kotlin/space/kscience/controls/ports) : Working with asynchronous data sending and receiving raw byte arrays
+
+
+## Usage
+
+## Artifact:
+
+The Maven coordinates of this project are `space.kscience:controls-core:0.2.0`.
+
+**Gradle Kotlin DSL:**
+```kotlin
+repositories {
+    maven("https://repo.kotlin.link")
+    //uncomment to access development builds
+    //maven("https://maven.pkg.jetbrains.space/spc/p/sci/dev")
+    mavenCentral()
+}
+
+dependencies {
+    implementation("space.kscience:controls-core:0.2.0")
+}
+```

controls-core/api/controls-core.api

@@ -0,0 +1,915 @@
+public final class space/kscience/controls/api/ActionDescriptor {
+	public static final field Companion Lspace/kscience/controls/api/ActionDescriptor$Companion;
+	public synthetic fun <init> (ILjava/lang/String;Ljava/lang/String;Lkotlinx/serialization/internal/SerializationConstructorMarker;)V
+	public fun <init> (Ljava/lang/String;)V
+	public final fun getInfo ()Ljava/lang/String;
+	public final fun getName ()Ljava/lang/String;
+	public final fun setInfo (Ljava/lang/String;)V
+	public static final synthetic fun write$Self (Lspace/kscience/controls/api/ActionDescriptor;Lkotlinx/serialization/encoding/CompositeEncoder;Lkotlinx/serialization/descriptors/SerialDescriptor;)V
+}
+
+public final class space/kscience/controls/api/ActionDescriptor$$serializer : kotlinx/serialization/internal/GeneratedSerializer {
+	public static final field INSTANCE Lspace/kscience/controls/api/ActionDescriptor$$serializer;
+	public fun childSerializers ()[Lkotlinx/serialization/KSerializer;
+	public synthetic fun deserialize (Lkotlinx/serialization/encoding/Decoder;)Ljava/lang/Object;
+	public fun deserialize (Lkotlinx/serialization/encoding/Decoder;)Lspace/kscience/controls/api/ActionDescriptor;
+	public fun getDescriptor ()Lkotlinx/serialization/descriptors/SerialDescriptor;
+	public synthetic fun serialize (Lkotlinx/serialization/encoding/Encoder;Ljava/lang/Object;)V
+	public fun serialize (Lkotlinx/serialization/encoding/Encoder;Lspace/kscience/controls/api/ActionDescriptor;)V
+	public fun typeParametersSerializers ()[Lkotlinx/serialization/KSerializer;
+}
+
+public final class space/kscience/controls/api/ActionDescriptor$Companion {
+	public final fun serializer ()Lkotlinx/serialization/KSerializer;
+}
+
+public final class space/kscience/controls/api/ActionExecuteMessage : space/kscience/controls/api/DeviceMessage {
+	public static final field Companion Lspace/kscience/controls/api/ActionExecuteMessage$Companion;
+	public synthetic fun <init> (ILjava/lang/String;Lspace/kscience/dataforge/meta/Meta;Ljava/lang/String;Lspace/kscience/dataforge/names/Name;Lspace/kscience/dataforge/names/Name;Ljava/lang/String;Lkotlinx/datetime/Instant;Lkotlinx/serialization/internal/SerializationConstructorMarker;)V
+	public fun <init> (Ljava/lang/String;Lspace/kscience/dataforge/meta/Meta;Ljava/lang/String;Lspace/kscience/dataforge/names/Name;Lspace/kscience/dataforge/names/Name;Ljava/lang/String;Lkotlinx/datetime/Instant;)V
+	public synthetic fun <init> (Ljava/lang/String;Lspace/kscience/dataforge/meta/Meta;Ljava/lang/String;Lspace/kscience/dataforge/names/Name;Lspace/kscience/dataforge/names/Name;Ljava/lang/String;Lkotlinx/datetime/Instant;ILkotlin/jvm/internal/DefaultConstructorMarker;)V
+	public fun changeSource (Lkotlin/jvm/functions/Function1;)Lspace/kscience/controls/api/DeviceMessage;
+	public final fun component1 ()Ljava/lang/String;
+	public final fun component2 ()Lspace/kscience/dataforge/meta/Meta;
+	public final fun component3 ()Ljava/lang/String;
+	public final fun component4 ()Lspace/kscience/dataforge/names/Name;
+	public final fun component5 ()Lspace/kscience/dataforge/names/Name;
+	public final fun component6 ()Ljava/lang/String;
+	public final fun component7 ()Lkotlinx/datetime/Instant;
+	public final fun copy (Ljava/lang/String;Lspace/kscience/dataforge/meta/Meta;Ljava/lang/String;Lspace/kscience/dataforge/names/Name;Lspace/kscience/dataforge/names/Name;Ljava/lang/String;Lkotlinx/datetime/Instant;)Lspace/kscience/controls/api/ActionExecuteMessage;
+	public static synthetic fun copy$default (Lspace/kscience/controls/api/ActionExecuteMessage;Ljava/lang/String;Lspace/kscience/dataforge/meta/Meta;Ljava/lang/String;Lspace/kscience/dataforge/names/Name;Lspace/kscience/dataforge/names/Name;Ljava/lang/String;Lkotlinx/datetime/Instant;ILjava/lang/Object;)Lspace/kscience/controls/api/ActionExecuteMessage;
+	public fun equals (Ljava/lang/Object;)Z
+	public final fun getAction ()Ljava/lang/String;
+	public final fun getArgument ()Lspace/kscience/dataforge/meta/Meta;
+	public fun getComment ()Ljava/lang/String;
+	public final fun getRequestId ()Ljava/lang/String;
+	public fun getSourceDevice ()Lspace/kscience/dataforge/names/Name;
+	public fun getTargetDevice ()Lspace/kscience/dataforge/names/Name;
+	public fun getTime ()Lkotlinx/datetime/Instant;
+	public fun hashCode ()I
+	public fun toString ()Ljava/lang/String;
+	public static final synthetic fun write$Self (Lspace/kscience/controls/api/ActionExecuteMessage;Lkotlinx/serialization/encoding/CompositeEncoder;Lkotlinx/serialization/descriptors/SerialDescriptor;)V
+}
+
+public final class space/kscience/controls/api/ActionExecuteMessage$$serializer : kotlinx/serialization/internal/GeneratedSerializer {
+	public static final field INSTANCE Lspace/kscience/controls/api/ActionExecuteMessage$$serializer;
+	public fun childSerializers ()[Lkotlinx/serialization/KSerializer;
+	public synthetic fun deserialize (Lkotlinx/serialization/encoding/Decoder;)Ljava/lang/Object;
+	public fun deserialize (Lkotlinx/serialization/encoding/Decoder;)Lspace/kscience/controls/api/ActionExecuteMessage;
+	public fun getDescriptor ()Lkotlinx/serialization/descriptors/SerialDescriptor;
+	public synthetic fun serialize (Lkotlinx/serialization/encoding/Encoder;Ljava/lang/Object;)V
+	public fun serialize (Lkotlinx/serialization/encoding/Encoder;Lspace/kscience/controls/api/ActionExecuteMessage;)V
+	public fun typeParametersSerializers ()[Lkotlinx/serialization/KSerializer;
+}
+
+public final class space/kscience/controls/api/ActionExecuteMessage$Companion {
+	public final fun serializer ()Lkotlinx/serialization/KSerializer;
+}
+
+public final class space/kscience/controls/api/ActionResultMessage : space/kscience/controls/api/DeviceMessage {
+	public static final field Companion Lspace/kscience/controls/api/ActionResultMessage$Companion;
+	public synthetic fun <init> (ILjava/lang/String;Lspace/kscience/dataforge/meta/Meta;Ljava/lang/String;Lspace/kscience/dataforge/names/Name;Lspace/kscience/dataforge/names/Name;Ljava/lang/String;Lkotlinx/datetime/Instant;Lkotlinx/serialization/internal/SerializationConstructorMarker;)V
+	public fun <init> (Ljava/lang/String;Lspace/kscience/dataforge/meta/Meta;Ljava/lang/String;Lspace/kscience/dataforge/names/Name;Lspace/kscience/dataforge/names/Name;Ljava/lang/String;Lkotlinx/datetime/Instant;)V
+	public synthetic fun <init> (Ljava/lang/String;Lspace/kscience/dataforge/meta/Meta;Ljava/lang/String;Lspace/kscience/dataforge/names/Name;Lspace/kscience/dataforge/names/Name;Ljava/lang/String;Lkotlinx/datetime/Instant;ILkotlin/jvm/internal/DefaultConstructorMarker;)V
+	public fun changeSource (Lkotlin/jvm/functions/Function1;)Lspace/kscience/controls/api/DeviceMessage;
+	public final fun component1 ()Ljava/lang/String;
+	public final fun component2 ()Lspace/kscience/dataforge/meta/Meta;
+	public final fun component3 ()Ljava/lang/String;
+	public final fun component4 ()Lspace/kscience/dataforge/names/Name;
+	public final fun component5 ()Lspace/kscience/dataforge/names/Name;
+	public final fun component6 ()Ljava/lang/String;
+	public final fun component7 ()Lkotlinx/datetime/Instant;
+	public final fun copy (Ljava/lang/String;Lspace/kscience/dataforge/meta/Meta;Ljava/lang/String;Lspace/kscience/dataforge/names/Name;Lspace/kscience/dataforge/names/Name;Ljava/lang/String;Lkotlinx/datetime/Instant;)Lspace/kscience/controls/api/ActionResultMessage;
+	public static synthetic fun copy$default (Lspace/kscience/controls/api/ActionResultMessage;Ljava/lang/String;Lspace/kscience/dataforge/meta/Meta;Ljava/lang/String;Lspace/kscience/dataforge/names/Name;Lspace/kscience/dataforge/names/Name;Ljava/lang/String;Lkotlinx/datetime/Instant;ILjava/lang/Object;)Lspace/kscience/controls/api/ActionResultMessage;
+	public fun equals (Ljava/lang/Object;)Z
+	public final fun getAction ()Ljava/lang/String;
+	public fun getComment ()Ljava/lang/String;
+	public final fun getRequestId ()Ljava/lang/String;
+	public final fun getResult ()Lspace/kscience/dataforge/meta/Meta;
+	public fun getSourceDevice ()Lspace/kscience/dataforge/names/Name;
+	public fun getTargetDevice ()Lspace/kscience/dataforge/names/Name;
+	public fun getTime ()Lkotlinx/datetime/Instant;
+	public fun hashCode ()I
+	public fun toString ()Ljava/lang/String;
+	public static final synthetic fun write$Self (Lspace/kscience/controls/api/ActionResultMessage;Lkotlinx/serialization/encoding/CompositeEncoder;Lkotlinx/serialization/descriptors/SerialDescriptor;)V
+}
+
+public final class space/kscience/controls/api/ActionResultMessage$$serializer : kotlinx/serialization/internal/GeneratedSerializer {
+	public static final field INSTANCE Lspace/kscience/controls/api/ActionResultMessage$$serializer;
+	public fun childSerializers ()[Lkotlinx/serialization/KSerializer;
+	public synthetic fun deserialize (Lkotlinx/serialization/encoding/Decoder;)Ljava/lang/Object;
+	public fun deserialize (Lkotlinx/serialization/encoding/Decoder;)Lspace/kscience/controls/api/ActionResultMessage;
+	public fun getDescriptor ()Lkotlinx/serialization/descriptors/SerialDescriptor;
+	public synthetic fun serialize (Lkotlinx/serialization/encoding/Encoder;Ljava/lang/Object;)V
+	public fun serialize (Lkotlinx/serialization/encoding/Encoder;Lspace/kscience/controls/api/ActionResultMessage;)V
+	public fun typeParametersSerializers ()[Lkotlinx/serialization/KSerializer;
+}
+
+public final class space/kscience/controls/api/ActionResultMessage$Companion {
+	public final fun serializer ()Lkotlinx/serialization/KSerializer;
+}
+
+public final class space/kscience/controls/api/BinaryNotificationMessage : space/kscience/controls/api/DeviceMessage {
+	public static final field Companion Lspace/kscience/controls/api/BinaryNotificationMessage$Companion;
+	public synthetic fun <init> (ILjava/lang/String;Lspace/kscience/dataforge/names/Name;Lspace/kscience/dataforge/names/Name;Ljava/lang/String;Lkotlinx/datetime/Instant;Lkotlinx/serialization/internal/SerializationConstructorMarker;)V
+	public fun <init> (Ljava/lang/String;Lspace/kscience/dataforge/names/Name;Lspace/kscience/dataforge/names/Name;Ljava/lang/String;Lkotlinx/datetime/Instant;)V
+	public synthetic fun <init> (Ljava/lang/String;Lspace/kscience/dataforge/names/Name;Lspace/kscience/dataforge/names/Name;Ljava/lang/String;Lkotlinx/datetime/Instant;ILkotlin/jvm/internal/DefaultConstructorMarker;)V
+	public fun changeSource (Lkotlin/jvm/functions/Function1;)Lspace/kscience/controls/api/DeviceMessage;
+	public final fun component1 ()Ljava/lang/String;
+	public final fun component2 ()Lspace/kscience/dataforge/names/Name;
+	public final fun component3 ()Lspace/kscience/dataforge/names/Name;
+	public final fun component4 ()Ljava/lang/String;
+	public final fun component5 ()Lkotlinx/datetime/Instant;
+	public final fun copy (Ljava/lang/String;Lspace/kscience/dataforge/names/Name;Lspace/kscience/dataforge/names/Name;Ljava/lang/String;Lkotlinx/datetime/Instant;)Lspace/kscience/controls/api/BinaryNotificationMessage;
+	public static synthetic fun copy$default (Lspace/kscience/controls/api/BinaryNotificationMessage;Ljava/lang/String;Lspace/kscience/dataforge/names/Name;Lspace/kscience/dataforge/names/Name;Ljava/lang/String;Lkotlinx/datetime/Instant;ILjava/lang/Object;)Lspace/kscience/controls/api/BinaryNotificationMessage;
+	public fun equals (Ljava/lang/Object;)Z
+	public final fun getBinaryID ()Ljava/lang/String;
+	public fun getComment ()Ljava/lang/String;
+	public fun getSourceDevice ()Lspace/kscience/dataforge/names/Name;
+	public fun getTargetDevice ()Lspace/kscience/dataforge/names/Name;
+	public fun getTime ()Lkotlinx/datetime/Instant;
+	public fun hashCode ()I
+	public fun toString ()Ljava/lang/String;
+	public static final synthetic fun write$Self (Lspace/kscience/controls/api/BinaryNotificationMessage;Lkotlinx/serialization/encoding/CompositeEncoder;Lkotlinx/serialization/descriptors/SerialDescriptor;)V
+}
+
+public final class space/kscience/controls/api/BinaryNotificationMessage$$serializer : kotlinx/serialization/internal/GeneratedSerializer {
+	public static final field INSTANCE Lspace/kscience/controls/api/BinaryNotificationMessage$$serializer;
+	public fun childSerializers ()[Lkotlinx/serialization/KSerializer;
+	public synthetic fun deserialize (Lkotlinx/serialization/encoding/Decoder;)Ljava/lang/Object;
+	public fun deserialize (Lkotlinx/serialization/encoding/Decoder;)Lspace/kscience/controls/api/BinaryNotificationMessage;
+	public fun getDescriptor ()Lkotlinx/serialization/descriptors/SerialDescriptor;
+	public synthetic fun serialize (Lkotlinx/serialization/encoding/Encoder;Ljava/lang/Object;)V
+	public fun serialize (Lkotlinx/serialization/encoding/Encoder;Lspace/kscience/controls/api/BinaryNotificationMessage;)V
+	public fun typeParametersSerializers ()[Lkotlinx/serialization/KSerializer;
+}
+
+public final class space/kscience/controls/api/BinaryNotificationMessage$Companion {
+	public final fun serializer ()Lkotlinx/serialization/KSerializer;
+}
+
+public final class space/kscience/controls/api/DescriptionMessage : space/kscience/controls/api/DeviceMessage {
+	public static final field Companion Lspace/kscience/controls/api/DescriptionMessage$Companion;
+	public synthetic fun <init> (ILspace/kscience/dataforge/meta/Meta;Ljava/util/Collection;Ljava/util/Collection;Lspace/kscience/dataforge/names/Name;Lspace/kscience/dataforge/names/Name;Ljava/lang/String;Lkotlinx/datetime/Instant;Lkotlinx/serialization/internal/SerializationConstructorMarker;)V
+	public fun <init> (Lspace/kscience/dataforge/meta/Meta;Ljava/util/Collection;Ljava/util/Collection;Lspace/kscience/dataforge/names/Name;Lspace/kscience/dataforge/names/Name;Ljava/lang/String;Lkotlinx/datetime/Instant;)V
+	public synthetic fun <init> (Lspace/kscience/dataforge/meta/Meta;Ljava/util/Collection;Ljava/util/Collection;Lspace/kscience/dataforge/names/Name;Lspace/kscience/dataforge/names/Name;Ljava/lang/String;Lkotlinx/datetime/Instant;ILkotlin/jvm/internal/DefaultConstructorMarker;)V
+	public fun changeSource (Lkotlin/jvm/functions/Function1;)Lspace/kscience/controls/api/DeviceMessage;
+	public final fun component1 ()Lspace/kscience/dataforge/meta/Meta;
+	public final fun component2 ()Ljava/util/Collection;
+	public final fun component3 ()Ljava/util/Collection;
+	public final fun component4 ()Lspace/kscience/dataforge/names/Name;
+	public final fun component5 ()Lspace/kscience/dataforge/names/Name;
+	public final fun component6 ()Ljava/lang/String;
+	public final fun component7 ()Lkotlinx/datetime/Instant;
+	public final fun copy (Lspace/kscience/dataforge/meta/Meta;Ljava/util/Collection;Ljava/util/Collection;Lspace/kscience/dataforge/names/Name;Lspace/kscience/dataforge/names/Name;Ljava/lang/String;Lkotlinx/datetime/Instant;)Lspace/kscience/controls/api/DescriptionMessage;
+	public static synthetic fun copy$default (Lspace/kscience/controls/api/DescriptionMessage;Lspace/kscience/dataforge/meta/Meta;Ljava/util/Collection;Ljava/util/Collection;Lspace/kscience/dataforge/names/Name;Lspace/kscience/dataforge/names/Name;Ljava/lang/String;Lkotlinx/datetime/Instant;ILjava/lang/Object;)Lspace/kscience/controls/api/DescriptionMessage;
+	public fun equals (Ljava/lang/Object;)Z
+	public final fun getActions ()Ljava/util/Collection;
+	public fun getComment ()Ljava/lang/String;
+	public final fun getDescription ()Lspace/kscience/dataforge/meta/Meta;
+	public final fun getProperties ()Ljava/util/Collection;
+	public fun getSourceDevice ()Lspace/kscience/dataforge/names/Name;
+	public fun getTargetDevice ()Lspace/kscience/dataforge/names/Name;
+	public fun getTime ()Lkotlinx/datetime/Instant;
+	public fun hashCode ()I
+	public fun toString ()Ljava/lang/String;
+	public static final synthetic fun write$Self (Lspace/kscience/controls/api/DescriptionMessage;Lkotlinx/serialization/encoding/CompositeEncoder;Lkotlinx/serialization/descriptors/SerialDescriptor;)V
+}
+
+public final class space/kscience/controls/api/DescriptionMessage$$serializer : kotlinx/serialization/internal/GeneratedSerializer {
+	public static final field INSTANCE Lspace/kscience/controls/api/DescriptionMessage$$serializer;
+	public fun childSerializers ()[Lkotlinx/serialization/KSerializer;
+	public synthetic fun deserialize (Lkotlinx/serialization/encoding/Decoder;)Ljava/lang/Object;
+	public fun deserialize (Lkotlinx/serialization/encoding/Decoder;)Lspace/kscience/controls/api/DescriptionMessage;
+	public fun getDescriptor ()Lkotlinx/serialization/descriptors/SerialDescriptor;
+	public synthetic fun serialize (Lkotlinx/serialization/encoding/Encoder;Ljava/lang/Object;)V
+	public fun serialize (Lkotlinx/serialization/encoding/Encoder;Lspace/kscience/controls/api/DescriptionMessage;)V
+	public fun typeParametersSerializers ()[Lkotlinx/serialization/KSerializer;
+}
+
+public final class space/kscience/controls/api/DescriptionMessage$Companion {
+	public final fun serializer ()Lkotlinx/serialization/KSerializer;
+}
+
+public final class space/kscience/controls/api/DescriptorsKt {
+	public static final fun metaDescriptor (Lspace/kscience/controls/api/PropertyDescriptor;Lkotlin/jvm/functions/Function1;)V
+}
+
+public abstract interface class space/kscience/controls/api/Device : java/lang/AutoCloseable, kotlinx/coroutines/CoroutineScope, space/kscience/dataforge/context/ContextAware {
+	public static final field Companion Lspace/kscience/controls/api/Device$Companion;
+	public static final field DEVICE_TARGET Ljava/lang/String;
+	public fun close ()V
+	public abstract fun execute (Ljava/lang/String;Lspace/kscience/dataforge/meta/Meta;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
+	public static synthetic fun execute$default (Lspace/kscience/controls/api/Device;Ljava/lang/String;Lspace/kscience/dataforge/meta/Meta;Lkotlin/coroutines/Continuation;ILjava/lang/Object;)Ljava/lang/Object;
+	public abstract fun getActionDescriptors ()Ljava/util/Collection;
+	public abstract fun getLifecycleState ()Lspace/kscience/controls/api/DeviceLifecycleState;
+	public abstract fun getMessageFlow ()Lkotlinx/coroutines/flow/Flow;
+	public fun getMeta ()Lspace/kscience/dataforge/meta/Meta;
+	public abstract fun getProperty (Ljava/lang/String;)Lspace/kscience/dataforge/meta/Meta;
+	public abstract fun getPropertyDescriptors ()Ljava/util/Collection;
+	public abstract fun invalidate (Ljava/lang/String;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
+	public fun open (Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
+	public static synthetic fun open$suspendImpl (Lspace/kscience/controls/api/Device;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
+	public abstract fun readProperty (Ljava/lang/String;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
+	public abstract fun writeProperty (Ljava/lang/String;Lspace/kscience/dataforge/meta/Meta;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
+}
+
+public final class space/kscience/controls/api/Device$Companion {
+	public static final field DEVICE_TARGET Ljava/lang/String;
+}
+
+public final class space/kscience/controls/api/DeviceErrorMessage : space/kscience/controls/api/DeviceMessage {
+	public static final field Companion Lspace/kscience/controls/api/DeviceErrorMessage$Companion;
+	public synthetic fun <init> (ILjava/lang/String;Ljava/lang/String;Ljava/lang/String;Lspace/kscience/dataforge/names/Name;Lspace/kscience/dataforge/names/Name;Ljava/lang/String;Lkotlinx/datetime/Instant;Lkotlinx/serialization/internal/SerializationConstructorMarker;)V
+	public fun <init> (Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;Lspace/kscience/dataforge/names/Name;Lspace/kscience/dataforge/names/Name;Ljava/lang/String;Lkotlinx/datetime/Instant;)V
+	public synthetic fun <init> (Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;Lspace/kscience/dataforge/names/Name;Lspace/kscience/dataforge/names/Name;Ljava/lang/String;Lkotlinx/datetime/Instant;ILkotlin/jvm/internal/DefaultConstructorMarker;)V
+	public fun changeSource (Lkotlin/jvm/functions/Function1;)Lspace/kscience/controls/api/DeviceMessage;
+	public final fun component1 ()Ljava/lang/String;
+	public final fun component2 ()Ljava/lang/String;
+	public final fun component3 ()Ljava/lang/String;
+	public final fun component4 ()Lspace/kscience/dataforge/names/Name;
+	public final fun component5 ()Lspace/kscience/dataforge/names/Name;
+	public final fun component6 ()Ljava/lang/String;
+	public final fun component7 ()Lkotlinx/datetime/Instant;
+	public final fun copy (Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;Lspace/kscience/dataforge/names/Name;Lspace/kscience/dataforge/names/Name;Ljava/lang/String;Lkotlinx/datetime/Instant;)Lspace/kscience/controls/api/DeviceErrorMessage;
+	public static synthetic fun copy$default (Lspace/kscience/controls/api/DeviceErrorMessage;Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;Lspace/kscience/dataforge/names/Name;Lspace/kscience/dataforge/names/Name;Ljava/lang/String;Lkotlinx/datetime/Instant;ILjava/lang/Object;)Lspace/kscience/controls/api/DeviceErrorMessage;
+	public fun equals (Ljava/lang/Object;)Z
+	public fun getComment ()Ljava/lang/String;
+	public final fun getErrorMessage ()Ljava/lang/String;
+	public final fun getErrorStackTrace ()Ljava/lang/String;
+	public final fun getErrorType ()Ljava/lang/String;
+	public fun getSourceDevice ()Lspace/kscience/dataforge/names/Name;
+	public fun getTargetDevice ()Lspace/kscience/dataforge/names/Name;
+	public fun getTime ()Lkotlinx/datetime/Instant;
+	public fun hashCode ()I
+	public fun toString ()Ljava/lang/String;
+	public static final synthetic fun write$Self (Lspace/kscience/controls/api/DeviceErrorMessage;Lkotlinx/serialization/encoding/CompositeEncoder;Lkotlinx/serialization/descriptors/SerialDescriptor;)V
+}
+
+public final class space/kscience/controls/api/DeviceErrorMessage$$serializer : kotlinx/serialization/internal/GeneratedSerializer {
+	public static final field INSTANCE Lspace/kscience/controls/api/DeviceErrorMessage$$serializer;
+	public fun childSerializers ()[Lkotlinx/serialization/KSerializer;
+	public synthetic fun deserialize (Lkotlinx/serialization/encoding/Decoder;)Ljava/lang/Object;
+	public fun deserialize (Lkotlinx/serialization/encoding/Decoder;)Lspace/kscience/controls/api/DeviceErrorMessage;
+	public fun getDescriptor ()Lkotlinx/serialization/descriptors/SerialDescriptor;
+	public synthetic fun serialize (Lkotlinx/serialization/encoding/Encoder;Ljava/lang/Object;)V
+	public fun serialize (Lkotlinx/serialization/encoding/Encoder;Lspace/kscience/controls/api/DeviceErrorMessage;)V
+	public fun typeParametersSerializers ()[Lkotlinx/serialization/KSerializer;
+}
+
+public final class space/kscience/controls/api/DeviceErrorMessage$Companion {
+	public final fun serializer ()Lkotlinx/serialization/KSerializer;
+}
+
+public abstract interface class space/kscience/controls/api/DeviceHub : space/kscience/dataforge/provider/Provider {
+	public static final field Companion Lspace/kscience/controls/api/DeviceHub$Companion;
+	public fun content (Ljava/lang/String;)Ljava/util/Map;
+	public fun getDefaultChainTarget ()Ljava/lang/String;
+	public fun getDefaultTarget ()Ljava/lang/String;
+	public abstract fun getDevices ()Ljava/util/Map;
+}
+
+public final class space/kscience/controls/api/DeviceHub$Companion {
+}
+
+public final class space/kscience/controls/api/DeviceHubKt {
+	public static final fun execute (Lspace/kscience/controls/api/DeviceHub;Lspace/kscience/dataforge/names/Name;Ljava/lang/String;Lspace/kscience/dataforge/meta/Meta;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
+	public static final fun get (Lspace/kscience/controls/api/DeviceHub;Ljava/lang/String;)Lspace/kscience/controls/api/Device;
+	public static final fun get (Lspace/kscience/controls/api/DeviceHub;Lspace/kscience/dataforge/names/Name;)Lspace/kscience/controls/api/Device;
+	public static final fun get (Lspace/kscience/controls/api/DeviceHub;Lspace/kscience/dataforge/names/NameToken;)Lspace/kscience/controls/api/Device;
+	public static final fun getOrNull (Lspace/kscience/controls/api/DeviceHub;Ljava/lang/String;)Lspace/kscience/controls/api/Device;
+	public static final fun getOrNull (Lspace/kscience/controls/api/DeviceHub;Lspace/kscience/dataforge/names/Name;)Lspace/kscience/controls/api/Device;
+	public static final fun readProperty (Lspace/kscience/controls/api/DeviceHub;Lspace/kscience/dataforge/names/Name;Ljava/lang/String;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
+	public static final fun writeProperty (Lspace/kscience/controls/api/DeviceHub;Lspace/kscience/dataforge/names/Name;Ljava/lang/String;Lspace/kscience/dataforge/meta/Meta;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
+}
+
+public final class space/kscience/controls/api/DeviceKt {
+	public static final fun getAllProperties (Lspace/kscience/controls/api/Device;)Lspace/kscience/dataforge/meta/Meta;
+	public static final fun getOrReadProperty (Lspace/kscience/controls/api/Device;Ljava/lang/String;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
+	public static final fun onPropertyChange (Lspace/kscience/controls/api/Device;Lkotlin/jvm/functions/Function2;)Lkotlinx/coroutines/Job;
+}
+
+public final class space/kscience/controls/api/DeviceLifecycleState : java/lang/Enum {
+	public static final field CLOSED Lspace/kscience/controls/api/DeviceLifecycleState;
+	public static final field INIT Lspace/kscience/controls/api/DeviceLifecycleState;
+	public static final field OPEN Lspace/kscience/controls/api/DeviceLifecycleState;
+	public static fun getEntries ()Lkotlin/enums/EnumEntries;
+	public static fun valueOf (Ljava/lang/String;)Lspace/kscience/controls/api/DeviceLifecycleState;
+	public static fun values ()[Lspace/kscience/controls/api/DeviceLifecycleState;
+}
+
+public final class space/kscience/controls/api/DeviceLogMessage : space/kscience/controls/api/DeviceMessage {
+	public static final field Companion Lspace/kscience/controls/api/DeviceLogMessage$Companion;
+	public synthetic fun <init> (ILjava/lang/String;Lspace/kscience/dataforge/meta/Meta;Lspace/kscience/dataforge/names/Name;Lspace/kscience/dataforge/names/Name;Ljava/lang/String;Lkotlinx/datetime/Instant;Lkotlinx/serialization/internal/SerializationConstructorMarker;)V
+	public fun <init> (Ljava/lang/String;Lspace/kscience/dataforge/meta/Meta;Lspace/kscience/dataforge/names/Name;Lspace/kscience/dataforge/names/Name;Ljava/lang/String;Lkotlinx/datetime/Instant;)V
+	public synthetic fun <init> (Ljava/lang/String;Lspace/kscience/dataforge/meta/Meta;Lspace/kscience/dataforge/names/Name;Lspace/kscience/dataforge/names/Name;Ljava/lang/String;Lkotlinx/datetime/Instant;ILkotlin/jvm/internal/DefaultConstructorMarker;)V
+	public fun changeSource (Lkotlin/jvm/functions/Function1;)Lspace/kscience/controls/api/DeviceMessage;
+	public final fun component1 ()Ljava/lang/String;
+	public final fun component2 ()Lspace/kscience/dataforge/meta/Meta;
+	public final fun component3 ()Lspace/kscience/dataforge/names/Name;
+	public final fun component4 ()Lspace/kscience/dataforge/names/Name;
+	public final fun component5 ()Ljava/lang/String;
+	public final fun component6 ()Lkotlinx/datetime/Instant;
+	public final fun copy (Ljava/lang/String;Lspace/kscience/dataforge/meta/Meta;Lspace/kscience/dataforge/names/Name;Lspace/kscience/dataforge/names/Name;Ljava/lang/String;Lkotlinx/datetime/Instant;)Lspace/kscience/controls/api/DeviceLogMessage;
+	public static synthetic fun copy$default (Lspace/kscience/controls/api/DeviceLogMessage;Ljava/lang/String;Lspace/kscience/dataforge/meta/Meta;Lspace/kscience/dataforge/names/Name;Lspace/kscience/dataforge/names/Name;Ljava/lang/String;Lkotlinx/datetime/Instant;ILjava/lang/Object;)Lspace/kscience/controls/api/DeviceLogMessage;
+	public fun equals (Ljava/lang/Object;)Z
+	public fun getComment ()Ljava/lang/String;
+	public final fun getData ()Lspace/kscience/dataforge/meta/Meta;
+	public final fun getMessage ()Ljava/lang/String;
+	public fun getSourceDevice ()Lspace/kscience/dataforge/names/Name;
+	public fun getTargetDevice ()Lspace/kscience/dataforge/names/Name;
+	public fun getTime ()Lkotlinx/datetime/Instant;
+	public fun hashCode ()I
+	public fun toString ()Ljava/lang/String;
+	public static final synthetic fun write$Self (Lspace/kscience/controls/api/DeviceLogMessage;Lkotlinx/serialization/encoding/CompositeEncoder;Lkotlinx/serialization/descriptors/SerialDescriptor;)V
+}
+
+public final class space/kscience/controls/api/DeviceLogMessage$$serializer : kotlinx/serialization/internal/GeneratedSerializer {
+	public static final field INSTANCE Lspace/kscience/controls/api/DeviceLogMessage$$serializer;
+	public fun childSerializers ()[Lkotlinx/serialization/KSerializer;
+	public synthetic fun deserialize (Lkotlinx/serialization/encoding/Decoder;)Ljava/lang/Object;
+	public fun deserialize (Lkotlinx/serialization/encoding/Decoder;)Lspace/kscience/controls/api/DeviceLogMessage;
+	public fun getDescriptor ()Lkotlinx/serialization/descriptors/SerialDescriptor;
+	public synthetic fun serialize (Lkotlinx/serialization/encoding/Encoder;Ljava/lang/Object;)V
+	public fun serialize (Lkotlinx/serialization/encoding/Encoder;Lspace/kscience/controls/api/DeviceLogMessage;)V
+	public fun typeParametersSerializers ()[Lkotlinx/serialization/KSerializer;
+}
+
+public final class space/kscience/controls/api/DeviceLogMessage$Companion {
+	public final fun serializer ()Lkotlinx/serialization/KSerializer;
+}
+
+public abstract class space/kscience/controls/api/DeviceMessage {
+	public static final field Companion Lspace/kscience/controls/api/DeviceMessage$Companion;
+	public synthetic fun <init> (ILkotlinx/serialization/internal/SerializationConstructorMarker;)V
+	public abstract fun changeSource (Lkotlin/jvm/functions/Function1;)Lspace/kscience/controls/api/DeviceMessage;
+	public abstract fun getComment ()Ljava/lang/String;
+	public abstract fun getSourceDevice ()Lspace/kscience/dataforge/names/Name;
+	public abstract fun getTargetDevice ()Lspace/kscience/dataforge/names/Name;
+	public abstract fun getTime ()Lkotlinx/datetime/Instant;
+	public static final synthetic fun write$Self (Lspace/kscience/controls/api/DeviceMessage;Lkotlinx/serialization/encoding/CompositeEncoder;Lkotlinx/serialization/descriptors/SerialDescriptor;)V
+}
+
+public final class space/kscience/controls/api/DeviceMessage$Companion {
+	public final fun error (Ljava/lang/Throwable;Lspace/kscience/dataforge/names/Name;Lspace/kscience/dataforge/names/Name;)Lspace/kscience/controls/api/DeviceErrorMessage;
+	public static synthetic fun error$default (Lspace/kscience/controls/api/DeviceMessage$Companion;Ljava/lang/Throwable;Lspace/kscience/dataforge/names/Name;Lspace/kscience/dataforge/names/Name;ILjava/lang/Object;)Lspace/kscience/controls/api/DeviceErrorMessage;
+	public final fun fromMeta (Lspace/kscience/dataforge/meta/Meta;)Lspace/kscience/controls/api/DeviceMessage;
+	public final fun serializer ()Lkotlinx/serialization/KSerializer;
+}
+
+public final class space/kscience/controls/api/DeviceMessageKt {
+	public static final fun toEnvelope (Lspace/kscience/controls/api/DeviceMessage;)Lspace/kscience/dataforge/io/Envelope;
+	public static final fun toMeta (Lspace/kscience/controls/api/DeviceMessage;)Lspace/kscience/dataforge/meta/Meta;
+}
+
+public final class space/kscience/controls/api/EmptyDeviceMessage : space/kscience/controls/api/DeviceMessage {
+	public static final field Companion Lspace/kscience/controls/api/EmptyDeviceMessage$Companion;
+	public fun <init> ()V
+	public synthetic fun <init> (ILspace/kscience/dataforge/names/Name;Lspace/kscience/dataforge/names/Name;Ljava/lang/String;Lkotlinx/datetime/Instant;Lkotlinx/serialization/internal/SerializationConstructorMarker;)V
+	public fun <init> (Lspace/kscience/dataforge/names/Name;Lspace/kscience/dataforge/names/Name;Ljava/lang/String;Lkotlinx/datetime/Instant;)V
+	public synthetic fun <init> (Lspace/kscience/dataforge/names/Name;Lspace/kscience/dataforge/names/Name;Ljava/lang/String;Lkotlinx/datetime/Instant;ILkotlin/jvm/internal/DefaultConstructorMarker;)V
+	public fun changeSource (Lkotlin/jvm/functions/Function1;)Lspace/kscience/controls/api/DeviceMessage;
+	public final fun component1 ()Lspace/kscience/dataforge/names/Name;
+	public final fun component2 ()Lspace/kscience/dataforge/names/Name;
+	public final fun component3 ()Ljava/lang/String;
+	public final fun component4 ()Lkotlinx/datetime/Instant;
+	public final fun copy (Lspace/kscience/dataforge/names/Name;Lspace/kscience/dataforge/names/Name;Ljava/lang/String;Lkotlinx/datetime/Instant;)Lspace/kscience/controls/api/EmptyDeviceMessage;
+	public static synthetic fun copy$default (Lspace/kscience/controls/api/EmptyDeviceMessage;Lspace/kscience/dataforge/names/Name;Lspace/kscience/dataforge/names/Name;Ljava/lang/String;Lkotlinx/datetime/Instant;ILjava/lang/Object;)Lspace/kscience/controls/api/EmptyDeviceMessage;
+	public fun equals (Ljava/lang/Object;)Z
+	public fun getComment ()Ljava/lang/String;
+	public fun getSourceDevice ()Lspace/kscience/dataforge/names/Name;
+	public fun getTargetDevice ()Lspace/kscience/dataforge/names/Name;
+	public fun getTime ()Lkotlinx/datetime/Instant;
+	public fun hashCode ()I
+	public fun toString ()Ljava/lang/String;
+	public static final synthetic fun write$Self (Lspace/kscience/controls/api/EmptyDeviceMessage;Lkotlinx/serialization/encoding/CompositeEncoder;Lkotlinx/serialization/descriptors/SerialDescriptor;)V
+}
+
+public final class space/kscience/controls/api/EmptyDeviceMessage$$serializer : kotlinx/serialization/internal/GeneratedSerializer {
+	public static final field INSTANCE Lspace/kscience/controls/api/EmptyDeviceMessage$$serializer;
+	public fun childSerializers ()[Lkotlinx/serialization/KSerializer;
+	public synthetic fun deserialize (Lkotlinx/serialization/encoding/Decoder;)Ljava/lang/Object;
+	public fun deserialize (Lkotlinx/serialization/encoding/Decoder;)Lspace/kscience/controls/api/EmptyDeviceMessage;
+	public fun getDescriptor ()Lkotlinx/serialization/descriptors/SerialDescriptor;
+	public synthetic fun serialize (Lkotlinx/serialization/encoding/Encoder;Ljava/lang/Object;)V
+	public fun serialize (Lkotlinx/serialization/encoding/Encoder;Lspace/kscience/controls/api/EmptyDeviceMessage;)V
+	public fun typeParametersSerializers ()[Lkotlinx/serialization/KSerializer;
+}
+
+public final class space/kscience/controls/api/EmptyDeviceMessage$Companion {
+	public final fun serializer ()Lkotlinx/serialization/KSerializer;
+}
+
+public final class space/kscience/controls/api/GetDescriptionMessage : space/kscience/controls/api/DeviceMessage {
+	public static final field Companion Lspace/kscience/controls/api/GetDescriptionMessage$Companion;
+	public synthetic fun <init> (ILspace/kscience/dataforge/names/Name;Lspace/kscience/dataforge/names/Name;Ljava/lang/String;Lkotlinx/datetime/Instant;Lkotlinx/serialization/internal/SerializationConstructorMarker;)V
+	public fun <init> (Lspace/kscience/dataforge/names/Name;Lspace/kscience/dataforge/names/Name;Ljava/lang/String;Lkotlinx/datetime/Instant;)V
+	public synthetic fun <init> (Lspace/kscience/dataforge/names/Name;Lspace/kscience/dataforge/names/Name;Ljava/lang/String;Lkotlinx/datetime/Instant;ILkotlin/jvm/internal/DefaultConstructorMarker;)V
+	public fun changeSource (Lkotlin/jvm/functions/Function1;)Lspace/kscience/controls/api/DeviceMessage;
+	public final fun component1 ()Lspace/kscience/dataforge/names/Name;
+	public final fun component2 ()Lspace/kscience/dataforge/names/Name;
+	public final fun component3 ()Ljava/lang/String;
+	public final fun component4 ()Lkotlinx/datetime/Instant;
+	public final fun copy (Lspace/kscience/dataforge/names/Name;Lspace/kscience/dataforge/names/Name;Ljava/lang/String;Lkotlinx/datetime/Instant;)Lspace/kscience/controls/api/GetDescriptionMessage;
+	public static synthetic fun copy$default (Lspace/kscience/controls/api/GetDescriptionMessage;Lspace/kscience/dataforge/names/Name;Lspace/kscience/dataforge/names/Name;Ljava/lang/String;Lkotlinx/datetime/Instant;ILjava/lang/Object;)Lspace/kscience/controls/api/GetDescriptionMessage;
+	public fun equals (Ljava/lang/Object;)Z
+	public fun getComment ()Ljava/lang/String;
+	public fun getSourceDevice ()Lspace/kscience/dataforge/names/Name;
+	public fun getTargetDevice ()Lspace/kscience/dataforge/names/Name;
+	public fun getTime ()Lkotlinx/datetime/Instant;
+	public fun hashCode ()I
+	public fun toString ()Ljava/lang/String;
+	public static final synthetic fun write$Self (Lspace/kscience/controls/api/GetDescriptionMessage;Lkotlinx/serialization/encoding/CompositeEncoder;Lkotlinx/serialization/descriptors/SerialDescriptor;)V
+}
+
+public final class space/kscience/controls/api/GetDescriptionMessage$$serializer : kotlinx/serialization/internal/GeneratedSerializer {
+	public static final field INSTANCE Lspace/kscience/controls/api/GetDescriptionMessage$$serializer;
+	public fun childSerializers ()[Lkotlinx/serialization/KSerializer;
+	public synthetic fun deserialize (Lkotlinx/serialization/encoding/Decoder;)Ljava/lang/Object;
+	public fun deserialize (Lkotlinx/serialization/encoding/Decoder;)Lspace/kscience/controls/api/GetDescriptionMessage;
+	public fun getDescriptor ()Lkotlinx/serialization/descriptors/SerialDescriptor;
+	public synthetic fun serialize (Lkotlinx/serialization/encoding/Encoder;Ljava/lang/Object;)V
+	public fun serialize (Lkotlinx/serialization/encoding/Encoder;Lspace/kscience/controls/api/GetDescriptionMessage;)V
+	public fun typeParametersSerializers ()[Lkotlinx/serialization/KSerializer;
+}
+
+public final class space/kscience/controls/api/GetDescriptionMessage$Companion {
+	public final fun serializer ()Lkotlinx/serialization/KSerializer;
+}
+
+public final class space/kscience/controls/api/PropertyChangedMessage : space/kscience/controls/api/DeviceMessage {
+	public static final field Companion Lspace/kscience/controls/api/PropertyChangedMessage$Companion;
+	public synthetic fun <init> (ILjava/lang/String;Lspace/kscience/dataforge/meta/Meta;Lspace/kscience/dataforge/names/Name;Lspace/kscience/dataforge/names/Name;Ljava/lang/String;Lkotlinx/datetime/Instant;Lkotlinx/serialization/internal/SerializationConstructorMarker;)V
+	public fun <init> (Ljava/lang/String;Lspace/kscience/dataforge/meta/Meta;Lspace/kscience/dataforge/names/Name;Lspace/kscience/dataforge/names/Name;Ljava/lang/String;Lkotlinx/datetime/Instant;)V
+	public synthetic fun <init> (Ljava/lang/String;Lspace/kscience/dataforge/meta/Meta;Lspace/kscience/dataforge/names/Name;Lspace/kscience/dataforge/names/Name;Ljava/lang/String;Lkotlinx/datetime/Instant;ILkotlin/jvm/internal/DefaultConstructorMarker;)V
+	public fun changeSource (Lkotlin/jvm/functions/Function1;)Lspace/kscience/controls/api/DeviceMessage;
+	public final fun component1 ()Ljava/lang/String;
+	public final fun component2 ()Lspace/kscience/dataforge/meta/Meta;
+	public final fun component3 ()Lspace/kscience/dataforge/names/Name;
+	public final fun component4 ()Lspace/kscience/dataforge/names/Name;
+	public final fun component5 ()Ljava/lang/String;
+	public final fun component6 ()Lkotlinx/datetime/Instant;
+	public final fun copy (Ljava/lang/String;Lspace/kscience/dataforge/meta/Meta;Lspace/kscience/dataforge/names/Name;Lspace/kscience/dataforge/names/Name;Ljava/lang/String;Lkotlinx/datetime/Instant;)Lspace/kscience/controls/api/PropertyChangedMessage;
+	public static synthetic fun copy$default (Lspace/kscience/controls/api/PropertyChangedMessage;Ljava/lang/String;Lspace/kscience/dataforge/meta/Meta;Lspace/kscience/dataforge/names/Name;Lspace/kscience/dataforge/names/Name;Ljava/lang/String;Lkotlinx/datetime/Instant;ILjava/lang/Object;)Lspace/kscience/controls/api/PropertyChangedMessage;
+	public fun equals (Ljava/lang/Object;)Z
+	public fun getComment ()Ljava/lang/String;
+	public final fun getProperty ()Ljava/lang/String;
+	public fun getSourceDevice ()Lspace/kscience/dataforge/names/Name;
+	public fun getTargetDevice ()Lspace/kscience/dataforge/names/Name;
+	public fun getTime ()Lkotlinx/datetime/Instant;
+	public final fun getValue ()Lspace/kscience/dataforge/meta/Meta;
+	public fun hashCode ()I
+	public fun toString ()Ljava/lang/String;
+	public static final synthetic fun write$Self (Lspace/kscience/controls/api/PropertyChangedMessage;Lkotlinx/serialization/encoding/CompositeEncoder;Lkotlinx/serialization/descriptors/SerialDescriptor;)V
+}
+
+public final class space/kscience/controls/api/PropertyChangedMessage$$serializer : kotlinx/serialization/internal/GeneratedSerializer {
+	public static final field INSTANCE Lspace/kscience/controls/api/PropertyChangedMessage$$serializer;
+	public fun childSerializers ()[Lkotlinx/serialization/KSerializer;
+	public synthetic fun deserialize (Lkotlinx/serialization/encoding/Decoder;)Ljava/lang/Object;
+	public fun deserialize (Lkotlinx/serialization/encoding/Decoder;)Lspace/kscience/controls/api/PropertyChangedMessage;
+	public fun getDescriptor ()Lkotlinx/serialization/descriptors/SerialDescriptor;
+	public synthetic fun serialize (Lkotlinx/serialization/encoding/Encoder;Ljava/lang/Object;)V
+	public fun serialize (Lkotlinx/serialization/encoding/Encoder;Lspace/kscience/controls/api/PropertyChangedMessage;)V
+	public fun typeParametersSerializers ()[Lkotlinx/serialization/KSerializer;
+}
+
+public final class space/kscience/controls/api/PropertyChangedMessage$Companion {
+	public final fun serializer ()Lkotlinx/serialization/KSerializer;
+}
+
+public final class space/kscience/controls/api/PropertyDescriptor {
+	public static final field Companion Lspace/kscience/controls/api/PropertyDescriptor$Companion;
+	public synthetic fun <init> (ILjava/lang/String;Ljava/lang/String;Lspace/kscience/dataforge/meta/descriptors/MetaDescriptor;ZZLkotlinx/serialization/internal/SerializationConstructorMarker;)V
+	public fun <init> (Ljava/lang/String;Ljava/lang/String;Lspace/kscience/dataforge/meta/descriptors/MetaDescriptor;ZZ)V
+	public synthetic fun <init> (Ljava/lang/String;Ljava/lang/String;Lspace/kscience/dataforge/meta/descriptors/MetaDescriptor;ZZILkotlin/jvm/internal/DefaultConstructorMarker;)V
+	public final fun getInfo ()Ljava/lang/String;
+	public final fun getMetaDescriptor ()Lspace/kscience/dataforge/meta/descriptors/MetaDescriptor;
+	public final fun getName ()Ljava/lang/String;
+	public final fun getReadable ()Z
+	public final fun getWritable ()Z
+	public final fun setInfo (Ljava/lang/String;)V
+	public final fun setMetaDescriptor (Lspace/kscience/dataforge/meta/descriptors/MetaDescriptor;)V
+	public final fun setReadable (Z)V
+	public final fun setWritable (Z)V
+	public static final synthetic fun write$Self (Lspace/kscience/controls/api/PropertyDescriptor;Lkotlinx/serialization/encoding/CompositeEncoder;Lkotlinx/serialization/descriptors/SerialDescriptor;)V
+}
+
+public final class space/kscience/controls/api/PropertyDescriptor$$serializer : kotlinx/serialization/internal/GeneratedSerializer {
+	public static final field INSTANCE Lspace/kscience/controls/api/PropertyDescriptor$$serializer;
+	public fun childSerializers ()[Lkotlinx/serialization/KSerializer;
+	public synthetic fun deserialize (Lkotlinx/serialization/encoding/Decoder;)Ljava/lang/Object;
+	public fun deserialize (Lkotlinx/serialization/encoding/Decoder;)Lspace/kscience/controls/api/PropertyDescriptor;
+	public fun getDescriptor ()Lkotlinx/serialization/descriptors/SerialDescriptor;
+	public synthetic fun serialize (Lkotlinx/serialization/encoding/Encoder;Ljava/lang/Object;)V
+	public fun serialize (Lkotlinx/serialization/encoding/Encoder;Lspace/kscience/controls/api/PropertyDescriptor;)V
+	public fun typeParametersSerializers ()[Lkotlinx/serialization/KSerializer;
+}
+
+public final class space/kscience/controls/api/PropertyDescriptor$Companion {
+	public final fun serializer ()Lkotlinx/serialization/KSerializer;
+}
+
+public final class space/kscience/controls/api/PropertyGetMessage : space/kscience/controls/api/DeviceMessage {
+	public static final field Companion Lspace/kscience/controls/api/PropertyGetMessage$Companion;
+	public synthetic fun <init> (ILjava/lang/String;Lspace/kscience/dataforge/names/Name;Lspace/kscience/dataforge/names/Name;Ljava/lang/String;Lkotlinx/datetime/Instant;Lkotlinx/serialization/internal/SerializationConstructorMarker;)V
+	public fun <init> (Ljava/lang/String;Lspace/kscience/dataforge/names/Name;Lspace/kscience/dataforge/names/Name;Ljava/lang/String;Lkotlinx/datetime/Instant;)V
+	public synthetic fun <init> (Ljava/lang/String;Lspace/kscience/dataforge/names/Name;Lspace/kscience/dataforge/names/Name;Ljava/lang/String;Lkotlinx/datetime/Instant;ILkotlin/jvm/internal/DefaultConstructorMarker;)V
+	public fun changeSource (Lkotlin/jvm/functions/Function1;)Lspace/kscience/controls/api/DeviceMessage;
+	public final fun component1 ()Ljava/lang/String;
+	public final fun component2 ()Lspace/kscience/dataforge/names/Name;
+	public final fun component3 ()Lspace/kscience/dataforge/names/Name;
+	public final fun component4 ()Ljava/lang/String;
+	public final fun component5 ()Lkotlinx/datetime/Instant;
+	public final fun copy (Ljava/lang/String;Lspace/kscience/dataforge/names/Name;Lspace/kscience/dataforge/names/Name;Ljava/lang/String;Lkotlinx/datetime/Instant;)Lspace/kscience/controls/api/PropertyGetMessage;
+	public static synthetic fun copy$default (Lspace/kscience/controls/api/PropertyGetMessage;Ljava/lang/String;Lspace/kscience/dataforge/names/Name;Lspace/kscience/dataforge/names/Name;Ljava/lang/String;Lkotlinx/datetime/Instant;ILjava/lang/Object;)Lspace/kscience/controls/api/PropertyGetMessage;
+	public fun equals (Ljava/lang/Object;)Z
+	public fun getComment ()Ljava/lang/String;
+	public final fun getProperty ()Ljava/lang/String;
+	public fun getSourceDevice ()Lspace/kscience/dataforge/names/Name;
+	public fun getTargetDevice ()Lspace/kscience/dataforge/names/Name;
+	public fun getTime ()Lkotlinx/datetime/Instant;
+	public fun hashCode ()I
+	public fun toString ()Ljava/lang/String;
+	public static final synthetic fun write$Self (Lspace/kscience/controls/api/PropertyGetMessage;Lkotlinx/serialization/encoding/CompositeEncoder;Lkotlinx/serialization/descriptors/SerialDescriptor;)V
+}
+
+public final class space/kscience/controls/api/PropertyGetMessage$$serializer : kotlinx/serialization/internal/GeneratedSerializer {
+	public static final field INSTANCE Lspace/kscience/controls/api/PropertyGetMessage$$serializer;
+	public fun childSerializers ()[Lkotlinx/serialization/KSerializer;
+	public synthetic fun deserialize (Lkotlinx/serialization/encoding/Decoder;)Ljava/lang/Object;
+	public fun deserialize (Lkotlinx/serialization/encoding/Decoder;)Lspace/kscience/controls/api/PropertyGetMessage;
+	public fun getDescriptor ()Lkotlinx/serialization/descriptors/SerialDescriptor;
+	public synthetic fun serialize (Lkotlinx/serialization/encoding/Encoder;Ljava/lang/Object;)V
+	public fun serialize (Lkotlinx/serialization/encoding/Encoder;Lspace/kscience/controls/api/PropertyGetMessage;)V
+	public fun typeParametersSerializers ()[Lkotlinx/serialization/KSerializer;
+}
+
+public final class space/kscience/controls/api/PropertyGetMessage$Companion {
+	public final fun serializer ()Lkotlinx/serialization/KSerializer;
+}
+
+public final class space/kscience/controls/api/PropertySetMessage : space/kscience/controls/api/DeviceMessage {
+	public static final field Companion Lspace/kscience/controls/api/PropertySetMessage$Companion;
+	public synthetic fun <init> (ILjava/lang/String;Lspace/kscience/dataforge/meta/Meta;Lspace/kscience/dataforge/names/Name;Lspace/kscience/dataforge/names/Name;Ljava/lang/String;Lkotlinx/datetime/Instant;Lkotlinx/serialization/internal/SerializationConstructorMarker;)V
+	public fun <init> (Ljava/lang/String;Lspace/kscience/dataforge/meta/Meta;Lspace/kscience/dataforge/names/Name;Lspace/kscience/dataforge/names/Name;Ljava/lang/String;Lkotlinx/datetime/Instant;)V
+	public synthetic fun <init> (Ljava/lang/String;Lspace/kscience/dataforge/meta/Meta;Lspace/kscience/dataforge/names/Name;Lspace/kscience/dataforge/names/Name;Ljava/lang/String;Lkotlinx/datetime/Instant;ILkotlin/jvm/internal/DefaultConstructorMarker;)V
+	public fun changeSource (Lkotlin/jvm/functions/Function1;)Lspace/kscience/controls/api/DeviceMessage;
+	public final fun component1 ()Ljava/lang/String;
+	public final fun component2 ()Lspace/kscience/dataforge/meta/Meta;
+	public final fun component3 ()Lspace/kscience/dataforge/names/Name;
+	public final fun component4 ()Lspace/kscience/dataforge/names/Name;
+	public final fun component5 ()Ljava/lang/String;
+	public final fun component6 ()Lkotlinx/datetime/Instant;
+	public final fun copy (Ljava/lang/String;Lspace/kscience/dataforge/meta/Meta;Lspace/kscience/dataforge/names/Name;Lspace/kscience/dataforge/names/Name;Ljava/lang/String;Lkotlinx/datetime/Instant;)Lspace/kscience/controls/api/PropertySetMessage;
+	public static synthetic fun copy$default (Lspace/kscience/controls/api/PropertySetMessage;Ljava/lang/String;Lspace/kscience/dataforge/meta/Meta;Lspace/kscience/dataforge/names/Name;Lspace/kscience/dataforge/names/Name;Ljava/lang/String;Lkotlinx/datetime/Instant;ILjava/lang/Object;)Lspace/kscience/controls/api/PropertySetMessage;
+	public fun equals (Ljava/lang/Object;)Z
+	public fun getComment ()Ljava/lang/String;
+	public final fun getProperty ()Ljava/lang/String;
+	public fun getSourceDevice ()Lspace/kscience/dataforge/names/Name;
+	public fun getTargetDevice ()Lspace/kscience/dataforge/names/Name;
+	public fun getTime ()Lkotlinx/datetime/Instant;
+	public final fun getValue ()Lspace/kscience/dataforge/meta/Meta;
+	public fun hashCode ()I
+	public fun toString ()Ljava/lang/String;
+	public static final synthetic fun write$Self (Lspace/kscience/controls/api/PropertySetMessage;Lkotlinx/serialization/encoding/CompositeEncoder;Lkotlinx/serialization/descriptors/SerialDescriptor;)V
+}
+
+public final class space/kscience/controls/api/PropertySetMessage$$serializer : kotlinx/serialization/internal/GeneratedSerializer {
+	public static final field INSTANCE Lspace/kscience/controls/api/PropertySetMessage$$serializer;
+	public fun childSerializers ()[Lkotlinx/serialization/KSerializer;
+	public synthetic fun deserialize (Lkotlinx/serialization/encoding/Decoder;)Ljava/lang/Object;
+	public fun deserialize (Lkotlinx/serialization/encoding/Decoder;)Lspace/kscience/controls/api/PropertySetMessage;
+	public fun getDescriptor ()Lkotlinx/serialization/descriptors/SerialDescriptor;
+	public synthetic fun serialize (Lkotlinx/serialization/encoding/Encoder;Ljava/lang/Object;)V
+	public fun serialize (Lkotlinx/serialization/encoding/Encoder;Lspace/kscience/controls/api/PropertySetMessage;)V
+	public fun typeParametersSerializers ()[Lkotlinx/serialization/KSerializer;
+}
+
+public final class space/kscience/controls/api/PropertySetMessage$Companion {
+	public final fun serializer ()Lkotlinx/serialization/KSerializer;
+}
+
+public abstract interface class space/kscience/controls/api/Socket : java/io/Closeable {
+	public abstract fun isOpen ()Z
+	public abstract fun receiving ()Lkotlinx/coroutines/flow/Flow;
+	public abstract fun send (Ljava/lang/Object;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
+}
+
+public final class space/kscience/controls/api/SocketKt {
+	public static final fun connectInput (Lspace/kscience/controls/api/Socket;Lkotlinx/coroutines/CoroutineScope;Lkotlinx/coroutines/flow/Flow;)Lkotlinx/coroutines/Job;
+}
+
+public final class space/kscience/controls/manager/DeviceManager : space/kscience/dataforge/context/AbstractPlugin, space/kscience/controls/api/DeviceHub {
+	public static final field Companion Lspace/kscience/controls/manager/DeviceManager$Companion;
+	public fun <init> ()V
+	public fun content (Ljava/lang/String;)Ljava/util/Map;
+	public fun getDevices ()Ljava/util/Map;
+	public fun getTag ()Lspace/kscience/dataforge/context/PluginTag;
+	public final fun registerDevice (Lspace/kscience/dataforge/names/NameToken;Lspace/kscience/controls/api/Device;)V
+}
+
+public final class space/kscience/controls/manager/DeviceManager$Companion : space/kscience/dataforge/context/PluginFactory {
+	public synthetic fun build (Lspace/kscience/dataforge/context/Context;Lspace/kscience/dataforge/meta/Meta;)Ljava/lang/Object;
+	public fun build (Lspace/kscience/dataforge/context/Context;Lspace/kscience/dataforge/meta/Meta;)Lspace/kscience/controls/manager/DeviceManager;
+	public fun getTag ()Lspace/kscience/dataforge/context/PluginTag;
+}
+
+public final class space/kscience/controls/manager/DeviceManagerKt {
+	public static final fun install (Lspace/kscience/controls/manager/DeviceManager;Ljava/lang/String;Lspace/kscience/controls/api/Device;)Lspace/kscience/controls/api/Device;
+	public static final fun install (Lspace/kscience/controls/manager/DeviceManager;Ljava/lang/String;Lspace/kscience/dataforge/context/Factory;Lspace/kscience/dataforge/meta/Meta;)Lspace/kscience/controls/api/Device;
+	public static synthetic fun install$default (Lspace/kscience/controls/manager/DeviceManager;Ljava/lang/String;Lspace/kscience/dataforge/context/Factory;Lspace/kscience/dataforge/meta/Meta;ILjava/lang/Object;)Lspace/kscience/controls/api/Device;
+	public static final fun installing (Lspace/kscience/controls/manager/DeviceManager;Lspace/kscience/dataforge/context/Factory;Lkotlin/jvm/functions/Function1;)Lkotlin/properties/ReadOnlyProperty;
+	public static synthetic fun installing$default (Lspace/kscience/controls/manager/DeviceManager;Lspace/kscience/dataforge/context/Factory;Lkotlin/jvm/functions/Function1;ILjava/lang/Object;)Lkotlin/properties/ReadOnlyProperty;
+}
+
+public final class space/kscience/controls/manager/RespondMessageKt {
+	public static final fun hubMessageFlow (Lspace/kscience/controls/api/DeviceHub;Lkotlinx/coroutines/CoroutineScope;)Lkotlinx/coroutines/flow/Flow;
+	public static final fun respondHubMessage (Lspace/kscience/controls/api/DeviceHub;Lspace/kscience/controls/api/DeviceMessage;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
+	public static final fun respondMessage (Lspace/kscience/controls/api/Device;Lspace/kscience/dataforge/names/Name;Lspace/kscience/controls/api/DeviceMessage;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
+}
+
+public final class space/kscience/controls/misc/TimeMetaKt {
+	public static final fun instant (Lspace/kscience/dataforge/meta/Meta;)Lkotlinx/datetime/Instant;
+	public static final fun toMeta (Lkotlinx/datetime/Instant;)Lspace/kscience/dataforge/meta/Meta;
+}
+
+public abstract class space/kscience/controls/ports/AbstractPort : space/kscience/controls/ports/Port {
+	public fun <init> (Lspace/kscience/dataforge/context/Context;Lkotlin/coroutines/CoroutineContext;)V
+	public synthetic fun <init> (Lspace/kscience/dataforge/context/Context;Lkotlin/coroutines/CoroutineContext;ILkotlin/jvm/internal/DefaultConstructorMarker;)V
+	public fun close ()V
+	public fun getContext ()Lspace/kscience/dataforge/context/Context;
+	protected final fun getScope ()Lkotlinx/coroutines/CoroutineScope;
+	public fun isOpen ()Z
+	protected final fun receive ([BLkotlin/coroutines/Continuation;)Ljava/lang/Object;
+	public fun receiving ()Lkotlinx/coroutines/flow/Flow;
+	public synthetic fun send (Ljava/lang/Object;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
+	public fun send ([BLkotlin/coroutines/Continuation;)Ljava/lang/Object;
+	protected abstract fun write ([BLkotlin/coroutines/Continuation;)Ljava/lang/Object;
+}
+
+public final class space/kscience/controls/ports/ChannelPort : space/kscience/controls/ports/AbstractPort, java/lang/AutoCloseable {
+	public fun <init> (Lspace/kscience/dataforge/context/Context;Lkotlin/coroutines/CoroutineContext;Lkotlin/jvm/functions/Function1;)V
+	public synthetic fun <init> (Lspace/kscience/dataforge/context/Context;Lkotlin/coroutines/CoroutineContext;Lkotlin/jvm/functions/Function1;ILkotlin/jvm/internal/DefaultConstructorMarker;)V
+	public fun close ()V
+	public final fun getStartJob ()Lkotlinx/coroutines/Job;
+}
+
+public final class space/kscience/controls/ports/ChannelPortKt {
+	public static final fun toArray (Ljava/nio/ByteBuffer;I)[B
+	public static synthetic fun toArray$default (Ljava/nio/ByteBuffer;IILjava/lang/Object;)[B
+}
+
+public final class space/kscience/controls/ports/JvmPortsPlugin : space/kscience/dataforge/context/AbstractPlugin {
+	public static final field Companion Lspace/kscience/controls/ports/JvmPortsPlugin$Companion;
+	public fun <init> ()V
+	public fun content (Ljava/lang/String;)Ljava/util/Map;
+	public final fun getPorts ()Lspace/kscience/controls/ports/Ports;
+	public fun getTag ()Lspace/kscience/dataforge/context/PluginTag;
+}
+
+public final class space/kscience/controls/ports/JvmPortsPlugin$Companion : space/kscience/dataforge/context/PluginFactory {
+	public synthetic fun build (Lspace/kscience/dataforge/context/Context;Lspace/kscience/dataforge/meta/Meta;)Ljava/lang/Object;
+	public fun build (Lspace/kscience/dataforge/context/Context;Lspace/kscience/dataforge/meta/Meta;)Lspace/kscience/controls/ports/JvmPortsPlugin;
+	public fun getTag ()Lspace/kscience/dataforge/context/PluginTag;
+}
+
+public final class space/kscience/controls/ports/PhrasesKt {
+	public static final fun delimitedIncoming (Lspace/kscience/controls/ports/Port;[B)Lkotlinx/coroutines/flow/Flow;
+	public static final fun stringsDelimitedIncoming (Lspace/kscience/controls/ports/Port;Ljava/lang/String;)Lkotlinx/coroutines/flow/Flow;
+	public static final fun withDelimiter (Lkotlinx/coroutines/flow/Flow;[B)Lkotlinx/coroutines/flow/Flow;
+	public static final fun withStringDelimiter (Lkotlinx/coroutines/flow/Flow;Ljava/lang/String;)Lkotlinx/coroutines/flow/Flow;
+}
+
+public abstract interface class space/kscience/controls/ports/Port : space/kscience/controls/api/Socket, space/kscience/dataforge/context/ContextAware {
+}
+
+public abstract interface class space/kscience/controls/ports/PortFactory : space/kscience/dataforge/context/Factory {
+	public static final field Companion Lspace/kscience/controls/ports/PortFactory$Companion;
+	public static final field TYPE Ljava/lang/String;
+	public abstract fun getType ()Ljava/lang/String;
+}
+
+public final class space/kscience/controls/ports/PortFactory$Companion {
+	public static final field TYPE Ljava/lang/String;
+}
+
+public final class space/kscience/controls/ports/PortKt {
+	public static final fun send (Lspace/kscience/controls/ports/Port;Ljava/lang/String;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
+}
+
+public final class space/kscience/controls/ports/PortProxy : space/kscience/controls/ports/Port, space/kscience/dataforge/context/ContextAware {
+	public fun <init> (Lspace/kscience/dataforge/context/Context;Lkotlin/jvm/functions/Function1;)V
+	public synthetic fun <init> (Lspace/kscience/dataforge/context/Context;Lkotlin/jvm/functions/Function1;ILkotlin/jvm/internal/DefaultConstructorMarker;)V
+	public fun close ()V
+	public fun getContext ()Lspace/kscience/dataforge/context/Context;
+	public final fun getFactory ()Lkotlin/jvm/functions/Function1;
+	public fun isOpen ()Z
+	public fun receiving ()Lkotlinx/coroutines/flow/Flow;
+	public synthetic fun send (Ljava/lang/Object;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
+	public fun send ([BLkotlin/coroutines/Continuation;)Ljava/lang/Object;
+}
+
+public final class space/kscience/controls/ports/Ports : space/kscience/dataforge/context/AbstractPlugin {
+	public static final field Companion Lspace/kscience/controls/ports/Ports$Companion;
+	public fun <init> ()V
+	public final fun buildPort (Lspace/kscience/dataforge/meta/Meta;)Lspace/kscience/controls/ports/Port;
+	public fun getTag ()Lspace/kscience/dataforge/context/PluginTag;
+}
+
+public final class space/kscience/controls/ports/Ports$Companion : space/kscience/dataforge/context/PluginFactory {
+	public synthetic fun build (Lspace/kscience/dataforge/context/Context;Lspace/kscience/dataforge/meta/Meta;)Ljava/lang/Object;
+	public fun build (Lspace/kscience/dataforge/context/Context;Lspace/kscience/dataforge/meta/Meta;)Lspace/kscience/controls/ports/Ports;
+	public fun getTag ()Lspace/kscience/dataforge/context/PluginTag;
+}
+
+public final class space/kscience/controls/ports/SynchronousPort : space/kscience/controls/ports/Port {
+	public fun <init> (Lspace/kscience/controls/ports/Port;Lkotlinx/coroutines/sync/Mutex;)V
+	public fun close ()V
+	public fun getContext ()Lspace/kscience/dataforge/context/Context;
+	public final fun getPort ()Lspace/kscience/controls/ports/Port;
+	public fun isOpen ()Z
+	public fun receiving ()Lkotlinx/coroutines/flow/Flow;
+	public final fun respond ([BLkotlin/jvm/functions/Function2;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
+	public synthetic fun send (Ljava/lang/Object;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
+	public fun send ([BLkotlin/coroutines/Continuation;)Ljava/lang/Object;
+}
+
+public final class space/kscience/controls/ports/SynchronousPortKt {
+	public static final fun respondStringWithDelimiter (Lspace/kscience/controls/ports/SynchronousPort;Ljava/lang/String;Ljava/lang/String;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
+	public static final fun respondWithDelimiter (Lspace/kscience/controls/ports/SynchronousPort;[B[BLkotlin/coroutines/Continuation;)Ljava/lang/Object;
+	public static final fun synchronous (Lspace/kscience/controls/ports/Port;Lkotlinx/coroutines/sync/Mutex;)Lspace/kscience/controls/ports/SynchronousPort;
+	public static synthetic fun synchronous$default (Lspace/kscience/controls/ports/Port;Lkotlinx/coroutines/sync/Mutex;ILjava/lang/Object;)Lspace/kscience/controls/ports/SynchronousPort;
+}
+
+public final class space/kscience/controls/ports/TcpPort : space/kscience/controls/ports/PortFactory {
+	public static final field INSTANCE Lspace/kscience/controls/ports/TcpPort;
+	public synthetic fun build (Lspace/kscience/dataforge/context/Context;Lspace/kscience/dataforge/meta/Meta;)Ljava/lang/Object;
+	public fun build (Lspace/kscience/dataforge/context/Context;Lspace/kscience/dataforge/meta/Meta;)Lspace/kscience/controls/ports/ChannelPort;
+	public fun getType ()Ljava/lang/String;
+	public final fun open (Lspace/kscience/dataforge/context/Context;Ljava/lang/String;ILkotlin/coroutines/CoroutineContext;)Lspace/kscience/controls/ports/ChannelPort;
+	public static synthetic fun open$default (Lspace/kscience/controls/ports/TcpPort;Lspace/kscience/dataforge/context/Context;Ljava/lang/String;ILkotlin/coroutines/CoroutineContext;ILjava/lang/Object;)Lspace/kscience/controls/ports/ChannelPort;
+}
+
+public final class space/kscience/controls/ports/UdpPort : space/kscience/controls/ports/PortFactory {
+	public static final field INSTANCE Lspace/kscience/controls/ports/UdpPort;
+	public synthetic fun build (Lspace/kscience/dataforge/context/Context;Lspace/kscience/dataforge/meta/Meta;)Ljava/lang/Object;
+	public fun build (Lspace/kscience/dataforge/context/Context;Lspace/kscience/dataforge/meta/Meta;)Lspace/kscience/controls/ports/ChannelPort;
+	public fun getType ()Ljava/lang/String;
+	public final fun open (Lspace/kscience/dataforge/context/Context;Ljava/lang/String;ILjava/lang/Integer;Ljava/lang/String;Lkotlin/coroutines/CoroutineContext;)Lspace/kscience/controls/ports/ChannelPort;
+	public static synthetic fun open$default (Lspace/kscience/controls/ports/UdpPort;Lspace/kscience/dataforge/context/Context;Ljava/lang/String;ILjava/lang/Integer;Ljava/lang/String;Lkotlin/coroutines/CoroutineContext;ILjava/lang/Object;)Lspace/kscience/controls/ports/ChannelPort;
+}
+
+public abstract interface class space/kscience/controls/spec/DeviceActionSpec {
+	public abstract fun execute (Lspace/kscience/controls/api/Device;Ljava/lang/Object;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
+	public abstract fun getDescriptor ()Lspace/kscience/controls/api/ActionDescriptor;
+	public abstract fun getInputConverter ()Lspace/kscience/dataforge/meta/transformations/MetaConverter;
+	public abstract fun getOutputConverter ()Lspace/kscience/dataforge/meta/transformations/MetaConverter;
+}
+
+public abstract class space/kscience/controls/spec/DeviceBase : space/kscience/controls/api/Device {
+	public fun <init> (Lspace/kscience/dataforge/context/Context;Lspace/kscience/dataforge/meta/Meta;)V
+	public synthetic fun <init> (Lspace/kscience/dataforge/context/Context;Lspace/kscience/dataforge/meta/Meta;ILkotlin/jvm/internal/DefaultConstructorMarker;)V
+	public fun close ()V
+	public fun execute (Ljava/lang/String;Lspace/kscience/dataforge/meta/Meta;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
+	public fun getActionDescriptors ()Ljava/util/Collection;
+	public abstract fun getActions ()Ljava/util/Map;
+	public final fun getContext ()Lspace/kscience/dataforge/context/Context;
+	public fun getCoroutineContext ()Lkotlin/coroutines/CoroutineContext;
+	public fun getLifecycleState ()Lspace/kscience/controls/api/DeviceLifecycleState;
+	public synthetic fun getMessageFlow ()Lkotlinx/coroutines/flow/Flow;
+	public fun getMessageFlow ()Lkotlinx/coroutines/flow/SharedFlow;
+	public fun getMeta ()Lspace/kscience/dataforge/meta/Meta;
+	public abstract fun getProperties ()Ljava/util/Map;
+	public fun getProperty (Ljava/lang/String;)Lspace/kscience/dataforge/meta/Meta;
+	public fun getPropertyDescriptors ()Ljava/util/Collection;
+	public fun invalidate (Ljava/lang/String;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
+	public fun open (Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
+	public fun readProperty (Ljava/lang/String;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
+	public final fun readPropertyOrNull (Ljava/lang/String;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
+	protected fun setLifecycleState (Lspace/kscience/controls/api/DeviceLifecycleState;)V
+	public abstract fun toString ()Ljava/lang/String;
+	protected final fun updateLogical (Ljava/lang/String;Lspace/kscience/dataforge/meta/Meta;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
+	public final fun updateLogical (Lspace/kscience/controls/spec/DevicePropertySpec;Ljava/lang/Object;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
+	public fun writeProperty (Ljava/lang/String;Lspace/kscience/dataforge/meta/Meta;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
+}
+
+public class space/kscience/controls/spec/DeviceBySpec : space/kscience/controls/spec/DeviceBase {
+	public fun <init> (Lspace/kscience/controls/spec/DeviceSpec;Lspace/kscience/dataforge/context/Context;Lspace/kscience/dataforge/meta/Meta;)V
+	public synthetic fun <init> (Lspace/kscience/controls/spec/DeviceSpec;Lspace/kscience/dataforge/context/Context;Lspace/kscience/dataforge/meta/Meta;ILkotlin/jvm/internal/DefaultConstructorMarker;)V
+	public fun close ()V
+	public fun getActions ()Ljava/util/Map;
+	public fun getProperties ()Ljava/util/Map;
+	public final fun getSpec ()Lspace/kscience/controls/spec/DeviceSpec;
+	public fun open (Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
+	public fun toString ()Ljava/lang/String;
+}
+
+public final class space/kscience/controls/spec/DeviceExtensionsKt {
+	public static final fun doRecurring-8Mi8wO0 (Lspace/kscience/controls/api/Device;JLkotlin/jvm/functions/Function2;)Lkotlinx/coroutines/Job;
+	public static final fun readRecurring-8Mi8wO0 (Lspace/kscience/controls/api/Device;JLkotlin/jvm/functions/Function2;)Lkotlinx/coroutines/flow/Flow;
+}
+
+public abstract interface class space/kscience/controls/spec/DevicePropertySpec {
+	public abstract fun getConverter ()Lspace/kscience/dataforge/meta/transformations/MetaConverter;
+	public abstract fun getDescriptor ()Lspace/kscience/controls/api/PropertyDescriptor;
+	public abstract fun read (Lspace/kscience/controls/api/Device;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
+}
+
+public final class space/kscience/controls/spec/DevicePropertySpecKt {
+	public static final fun execute (Lspace/kscience/controls/api/Device;Lspace/kscience/controls/spec/DeviceActionSpec;Ljava/lang/Object;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
+	public static final fun execute (Lspace/kscience/controls/api/Device;Lspace/kscience/controls/spec/DeviceActionSpec;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
+	public static final fun get (Lspace/kscience/controls/api/Device;Lspace/kscience/controls/spec/DevicePropertySpec;)Ljava/lang/Object;
+	public static final fun getName (Lspace/kscience/controls/spec/DeviceActionSpec;)Ljava/lang/String;
+	public static final fun getName (Lspace/kscience/controls/spec/DevicePropertySpec;)Ljava/lang/String;
+	public static final fun invalidate (Lspace/kscience/controls/api/Device;Lspace/kscience/controls/spec/DevicePropertySpec;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
+	public static final fun onPropertyChange (Lspace/kscience/controls/api/Device;Lspace/kscience/controls/spec/DevicePropertySpec;Lkotlin/jvm/functions/Function3;)Lkotlinx/coroutines/Job;
+	public static final fun propertyFlow (Lspace/kscience/controls/api/Device;Lspace/kscience/controls/spec/DevicePropertySpec;)Lkotlinx/coroutines/flow/Flow;
+	public static final fun read (Lspace/kscience/controls/api/Device;Lspace/kscience/controls/spec/DevicePropertySpec;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
+	public static final fun readOrNull (Lspace/kscience/controls/spec/DeviceBase;Lspace/kscience/controls/spec/DevicePropertySpec;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
+	public static final fun set (Lspace/kscience/controls/api/Device;Lspace/kscience/controls/spec/WritableDevicePropertySpec;Ljava/lang/Object;)Lkotlinx/coroutines/Job;
+	public static final fun useProperty (Lspace/kscience/controls/api/Device;Lspace/kscience/controls/spec/DevicePropertySpec;Lkotlin/jvm/functions/Function2;)Lkotlinx/coroutines/Job;
+	public static final fun write (Lspace/kscience/controls/api/Device;Lspace/kscience/controls/spec/WritableDevicePropertySpec;Ljava/lang/Object;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
+}
+
+public abstract class space/kscience/controls/spec/DeviceSpec {
+	public fun <init> ()V
+	public final fun action (Lspace/kscience/dataforge/meta/transformations/MetaConverter;Lspace/kscience/dataforge/meta/transformations/MetaConverter;Lkotlin/jvm/functions/Function1;Ljava/lang/String;Lkotlin/jvm/functions/Function3;)Lkotlin/properties/PropertyDelegateProvider;
+	public static synthetic fun action$default (Lspace/kscience/controls/spec/DeviceSpec;Lspace/kscience/dataforge/meta/transformations/MetaConverter;Lspace/kscience/dataforge/meta/transformations/MetaConverter;Lkotlin/jvm/functions/Function1;Ljava/lang/String;Lkotlin/jvm/functions/Function3;ILjava/lang/Object;)Lkotlin/properties/PropertyDelegateProvider;
+	public final fun getActions ()Ljava/util/Map;
+	public final fun getProperties ()Ljava/util/Map;
+	public final fun metaAction (Lkotlin/jvm/functions/Function1;Ljava/lang/String;Lkotlin/jvm/functions/Function3;)Lkotlin/properties/PropertyDelegateProvider;
+	public static synthetic fun metaAction$default (Lspace/kscience/controls/spec/DeviceSpec;Lkotlin/jvm/functions/Function1;Ljava/lang/String;Lkotlin/jvm/functions/Function3;ILjava/lang/Object;)Lkotlin/properties/PropertyDelegateProvider;
+	public final fun mutableProperty (Lspace/kscience/dataforge/meta/transformations/MetaConverter;Lkotlin/jvm/functions/Function1;Ljava/lang/String;Lkotlin/jvm/functions/Function2;Lkotlin/jvm/functions/Function3;)Lkotlin/properties/PropertyDelegateProvider;
+	public final fun mutableProperty (Lspace/kscience/dataforge/meta/transformations/MetaConverter;Lkotlin/reflect/KMutableProperty1;Lkotlin/jvm/functions/Function1;)Lkotlin/properties/PropertyDelegateProvider;
+	public static synthetic fun mutableProperty$default (Lspace/kscience/controls/spec/DeviceSpec;Lspace/kscience/dataforge/meta/transformations/MetaConverter;Lkotlin/jvm/functions/Function1;Ljava/lang/String;Lkotlin/jvm/functions/Function2;Lkotlin/jvm/functions/Function3;ILjava/lang/Object;)Lkotlin/properties/PropertyDelegateProvider;
+	public static synthetic fun mutableProperty$default (Lspace/kscience/controls/spec/DeviceSpec;Lspace/kscience/dataforge/meta/transformations/MetaConverter;Lkotlin/reflect/KMutableProperty1;Lkotlin/jvm/functions/Function1;ILjava/lang/Object;)Lkotlin/properties/PropertyDelegateProvider;
+	public fun onClose (Lspace/kscience/controls/api/Device;)V
+	public fun onOpen (Lspace/kscience/controls/api/Device;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
+	public final fun property (Lspace/kscience/dataforge/meta/transformations/MetaConverter;Lkotlin/jvm/functions/Function1;Ljava/lang/String;Lkotlin/jvm/functions/Function2;)Lkotlin/properties/PropertyDelegateProvider;
+	public final fun property (Lspace/kscience/dataforge/meta/transformations/MetaConverter;Lkotlin/reflect/KProperty1;Lkotlin/jvm/functions/Function1;)Lkotlin/properties/PropertyDelegateProvider;
+	public static synthetic fun property$default (Lspace/kscience/controls/spec/DeviceSpec;Lspace/kscience/dataforge/meta/transformations/MetaConverter;Lkotlin/jvm/functions/Function1;Ljava/lang/String;Lkotlin/jvm/functions/Function2;ILjava/lang/Object;)Lkotlin/properties/PropertyDelegateProvider;
+	public static synthetic fun property$default (Lspace/kscience/controls/spec/DeviceSpec;Lspace/kscience/dataforge/meta/transformations/MetaConverter;Lkotlin/reflect/KProperty1;Lkotlin/jvm/functions/Function1;ILjava/lang/Object;)Lkotlin/properties/PropertyDelegateProvider;
+	public final fun registerAction (Lspace/kscience/controls/spec/DeviceActionSpec;)Lspace/kscience/controls/spec/DeviceActionSpec;
+	public final fun registerProperty (Lspace/kscience/controls/spec/DevicePropertySpec;)Lspace/kscience/controls/spec/DevicePropertySpec;
+	public final fun unitAction (Lkotlin/jvm/functions/Function1;Ljava/lang/String;Lkotlin/jvm/functions/Function2;)Lkotlin/properties/PropertyDelegateProvider;
+	public static synthetic fun unitAction$default (Lspace/kscience/controls/spec/DeviceSpec;Lkotlin/jvm/functions/Function1;Ljava/lang/String;Lkotlin/jvm/functions/Function2;ILjava/lang/Object;)Lkotlin/properties/PropertyDelegateProvider;
+}
+
+public final class space/kscience/controls/spec/DeviceSpecKt {
+	public static final fun getUnit (Lspace/kscience/dataforge/meta/transformations/MetaConverter$Companion;)Lspace/kscience/dataforge/meta/transformations/MetaConverter;
+	public static final fun logicalProperty (Lspace/kscience/controls/spec/DeviceSpec;Lspace/kscience/dataforge/meta/transformations/MetaConverter;Lkotlin/jvm/functions/Function1;Ljava/lang/String;)Lkotlin/properties/PropertyDelegateProvider;
+	public static synthetic fun logicalProperty$default (Lspace/kscience/controls/spec/DeviceSpec;Lspace/kscience/dataforge/meta/transformations/MetaConverter;Lkotlin/jvm/functions/Function1;Ljava/lang/String;ILjava/lang/Object;)Lkotlin/properties/PropertyDelegateProvider;
+}
+
+public final class space/kscience/controls/spec/DurationConverter : space/kscience/dataforge/meta/transformations/MetaConverter {
+	public static final field INSTANCE Lspace/kscience/controls/spec/DurationConverter;
+	public synthetic fun metaToObject (Lspace/kscience/dataforge/meta/Meta;)Ljava/lang/Object;
+	public fun metaToObject-5sfh64U (Lspace/kscience/dataforge/meta/Meta;)J
+	public synthetic fun objectToMeta (Ljava/lang/Object;)Lspace/kscience/dataforge/meta/Meta;
+	public fun objectToMeta-LRDsOJo (J)Lspace/kscience/dataforge/meta/Meta;
+}
+
+public abstract interface annotation class space/kscience/controls/spec/InternalDeviceAPI : java/lang/annotation/Annotation {
+}
+
+public final class space/kscience/controls/spec/MiscKt {
+	public static final fun asMeta (D)Lspace/kscience/dataforge/meta/Meta;
+	public static final fun getDuration (Lspace/kscience/dataforge/meta/transformations/MetaConverter$Companion;)Lspace/kscience/dataforge/meta/transformations/MetaConverter;
+}
+
+public final class space/kscience/controls/spec/PropertySpecDelegatesKt {
+	public static final fun booleanProperty (Lspace/kscience/controls/spec/DeviceSpec;Lkotlin/jvm/functions/Function1;Ljava/lang/String;Lkotlin/jvm/functions/Function2;)Lkotlin/properties/PropertyDelegateProvider;
+	public static final fun booleanProperty (Lspace/kscience/controls/spec/DeviceSpec;Lkotlin/jvm/functions/Function1;Ljava/lang/String;Lkotlin/jvm/functions/Function2;Lkotlin/jvm/functions/Function3;)Lkotlin/properties/PropertyDelegateProvider;
+	public static synthetic fun booleanProperty$default (Lspace/kscience/controls/spec/DeviceSpec;Lkotlin/jvm/functions/Function1;Ljava/lang/String;Lkotlin/jvm/functions/Function2;ILjava/lang/Object;)Lkotlin/properties/PropertyDelegateProvider;
+	public static synthetic fun booleanProperty$default (Lspace/kscience/controls/spec/DeviceSpec;Lkotlin/jvm/functions/Function1;Ljava/lang/String;Lkotlin/jvm/functions/Function2;Lkotlin/jvm/functions/Function3;ILjava/lang/Object;)Lkotlin/properties/PropertyDelegateProvider;
+	public static final fun doubleProperty (Lspace/kscience/controls/spec/DeviceSpec;Lkotlin/jvm/functions/Function1;Ljava/lang/String;Lkotlin/jvm/functions/Function2;)Lkotlin/properties/PropertyDelegateProvider;
+	public static final fun doubleProperty (Lspace/kscience/controls/spec/DeviceSpec;Lkotlin/jvm/functions/Function1;Ljava/lang/String;Lkotlin/jvm/functions/Function2;Lkotlin/jvm/functions/Function3;)Lkotlin/properties/PropertyDelegateProvider;
+	public static synthetic fun doubleProperty$default (Lspace/kscience/controls/spec/DeviceSpec;Lkotlin/jvm/functions/Function1;Ljava/lang/String;Lkotlin/jvm/functions/Function2;ILjava/lang/Object;)Lkotlin/properties/PropertyDelegateProvider;
+	public static synthetic fun doubleProperty$default (Lspace/kscience/controls/spec/DeviceSpec;Lkotlin/jvm/functions/Function1;Ljava/lang/String;Lkotlin/jvm/functions/Function2;Lkotlin/jvm/functions/Function3;ILjava/lang/Object;)Lkotlin/properties/PropertyDelegateProvider;
+	public static final fun metaProperty (Lspace/kscience/controls/spec/DeviceSpec;Lkotlin/jvm/functions/Function1;Ljava/lang/String;Lkotlin/jvm/functions/Function2;)Lkotlin/properties/PropertyDelegateProvider;
+	public static final fun metaProperty (Lspace/kscience/controls/spec/DeviceSpec;Lkotlin/jvm/functions/Function1;Ljava/lang/String;Lkotlin/jvm/functions/Function2;Lkotlin/jvm/functions/Function3;)Lkotlin/properties/PropertyDelegateProvider;
+	public static synthetic fun metaProperty$default (Lspace/kscience/controls/spec/DeviceSpec;Lkotlin/jvm/functions/Function1;Ljava/lang/String;Lkotlin/jvm/functions/Function2;ILjava/lang/Object;)Lkotlin/properties/PropertyDelegateProvider;
+	public static synthetic fun metaProperty$default (Lspace/kscience/controls/spec/DeviceSpec;Lkotlin/jvm/functions/Function1;Ljava/lang/String;Lkotlin/jvm/functions/Function2;Lkotlin/jvm/functions/Function3;ILjava/lang/Object;)Lkotlin/properties/PropertyDelegateProvider;
+	public static final fun numberProperty (Lspace/kscience/controls/spec/DeviceSpec;Ljava/lang/String;Lkotlin/jvm/functions/Function1;Lkotlin/jvm/functions/Function2;)Lkotlin/properties/PropertyDelegateProvider;
+	public static final fun numberProperty (Lspace/kscience/controls/spec/DeviceSpec;Lkotlin/jvm/functions/Function1;Ljava/lang/String;Lkotlin/jvm/functions/Function2;Lkotlin/jvm/functions/Function3;)Lkotlin/properties/PropertyDelegateProvider;
+	public static synthetic fun numberProperty$default (Lspace/kscience/controls/spec/DeviceSpec;Ljava/lang/String;Lkotlin/jvm/functions/Function1;Lkotlin/jvm/functions/Function2;ILjava/lang/Object;)Lkotlin/properties/PropertyDelegateProvider;
+	public static synthetic fun numberProperty$default (Lspace/kscience/controls/spec/DeviceSpec;Lkotlin/jvm/functions/Function1;Ljava/lang/String;Lkotlin/jvm/functions/Function2;Lkotlin/jvm/functions/Function3;ILjava/lang/Object;)Lkotlin/properties/PropertyDelegateProvider;
+	public static final fun stringProperty (Lspace/kscience/controls/spec/DeviceSpec;Lkotlin/jvm/functions/Function1;Ljava/lang/String;Lkotlin/jvm/functions/Function2;)Lkotlin/properties/PropertyDelegateProvider;
+	public static final fun stringProperty (Lspace/kscience/controls/spec/DeviceSpec;Lkotlin/jvm/functions/Function1;Ljava/lang/String;Lkotlin/jvm/functions/Function2;Lkotlin/jvm/functions/Function3;)Lkotlin/properties/PropertyDelegateProvider;
+	public static synthetic fun stringProperty$default (Lspace/kscience/controls/spec/DeviceSpec;Lkotlin/jvm/functions/Function1;Ljava/lang/String;Lkotlin/jvm/functions/Function2;ILjava/lang/Object;)Lkotlin/properties/PropertyDelegateProvider;
+	public static synthetic fun stringProperty$default (Lspace/kscience/controls/spec/DeviceSpec;Lkotlin/jvm/functions/Function1;Ljava/lang/String;Lkotlin/jvm/functions/Function2;Lkotlin/jvm/functions/Function3;ILjava/lang/Object;)Lkotlin/properties/PropertyDelegateProvider;
+}
+
+public final class space/kscience/controls/spec/UnitMetaConverter : space/kscience/dataforge/meta/transformations/MetaConverter {
+	public static final field INSTANCE Lspace/kscience/controls/spec/UnitMetaConverter;
+	public synthetic fun metaToObject (Lspace/kscience/dataforge/meta/Meta;)Ljava/lang/Object;
+	public fun metaToObject (Lspace/kscience/dataforge/meta/Meta;)V
+	public synthetic fun objectToMeta (Ljava/lang/Object;)Lspace/kscience/dataforge/meta/Meta;
+	public fun objectToMeta (Lkotlin/Unit;)Lspace/kscience/dataforge/meta/Meta;
+}
+
+public abstract interface class space/kscience/controls/spec/WritableDevicePropertySpec : space/kscience/controls/spec/DevicePropertySpec {
+	public abstract fun write (Lspace/kscience/controls/api/Device;Ljava/lang/Object;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
+}
+

controls-core/build.gradle.kts

@@ -0,0 +1,68 @@
+import space.kscience.gradle.Maturity
+
+plugins {
+    id("space.kscience.gradle.mpp")
+    `maven-publish`
+}
+
+description = """
+    Core interfaces for building a device server
+""".trimIndent()
+
+val dataforgeVersion: String by rootProject.extra
+
+kscience {
+    jvm()
+    js()
+    native()
+    useCoroutines()
+    useSerialization{
+        json()
+    }
+    useContextReceivers()
+    dependencies {
+        api("space.kscience:dataforge-io:$dataforgeVersion")
+        api(spclibs.kotlinx.datetime)
+    }
+}
+
+
+readme{
+    maturity = Maturity.EXPERIMENTAL
+
+    feature("device", ref = "src/commonMain/kotlin/space/kscience/controls/api/Device.kt"){
+        """
+            Device API with subscription (asynchronous and pseudo-synchronous properties)
+        """.trimIndent()
+    }
+
+    feature("deviceMessage", ref = "src/commonMain/kotlin/space/kscience/controls/api/DeviceMessage.kt"){
+        """
+            Specification for messages used to communicate between Controls-kt devices.
+        """.trimIndent()
+    }
+
+    feature("deviceHub", ref = "src/commonMain/kotlin/space/kscience/controls/api/DeviceHub.kt"){
+        """
+            Grouping of devices into local tree-like hubs.
+        """.trimIndent()
+    }
+
+    feature("deviceSpec", ref = "src/commonMain/kotlin/space/kscience/controls/spec"){
+        """
+            Mechanics and type-safe builders for devices. Including separation of device specification and device state.
+        """.trimIndent()
+    }
+
+    feature("deviceManager", ref = "src/commonMain/kotlin/space/kscience/controls/manager"){
+        """
+            DataForge DI integration for devices. Includes device builders.
+        """.trimIndent()
+    }
+
+    feature("ports", ref = "src/commonMain/kotlin/space/kscience/controls/ports"){
+        """
+            Working with asynchronous data sending and receiving raw byte arrays
+        """.trimIndent()
+    }
+}

controls-core/src/commonMain/kotlin/space/kscience/controls/api/Device.kt

@@ -0,0 +1,128 @@
+package space.kscience.controls.api
+
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Job
+import kotlinx.coroutines.cancel
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.filterIsInstance
+import kotlinx.coroutines.flow.launchIn
+import kotlinx.coroutines.flow.onEach
+import space.kscience.controls.api.Device.Companion.DEVICE_TARGET
+import space.kscience.dataforge.context.ContextAware
+import space.kscience.dataforge.context.info
+import space.kscience.dataforge.context.logger
+import space.kscience.dataforge.meta.Meta
+import space.kscience.dataforge.misc.DFExperimental
+import space.kscience.dataforge.misc.Type
+import space.kscience.dataforge.names.Name
+
+/**
+ * A lifecycle state of a device
+ */
+public enum class DeviceLifecycleState{
+    INIT,
+    OPEN,
+    CLOSED
+}
+
+/**
+ *  General interface describing a managed Device.
+ *  [Device] is a supervisor scope encompassing all operations on a device.
+ *  When canceled, cancels all running processes.
+ */
+@Type(DEVICE_TARGET)
+public interface Device : AutoCloseable, ContextAware, CoroutineScope {
+
+    /**
+     * Initial configuration meta for the device
+     */
+    public val meta: Meta get() = Meta.EMPTY
+
+    /**
+     * List of supported property descriptors
+     */
+    public val propertyDescriptors: Collection<PropertyDescriptor>
+
+    /**
+     * List of supported action descriptors. Action is a request to the device that
+     * may or may not change the properties
+     */
+    public val actionDescriptors: Collection<ActionDescriptor>
+
+    /**
+     * Read the physical state of property and update/push notifications if needed.
+     */
+    public suspend fun readProperty(propertyName: String): Meta
+
+    /**
+     * Get the logical state of property or return null if it is invalid
+     */
+    public fun getProperty(propertyName: String): Meta?
+
+    /**
+     * Invalidate property (set logical state to invalid)
+     *
+     * This message is suspended to provide lock-free local property changes (they require coroutine context).
+     */
+    public suspend fun invalidate(propertyName: String)
+
+    /**
+     * Set property [value] for a property with name [propertyName].
+     * In rare cases could suspend if the [Device] supports command queue, and it is full at the moment.
+     */
+    public suspend fun writeProperty(propertyName: String, value: Meta)
+
+    /**
+     * A subscription-based [Flow] of [DeviceMessage] provided by device. The flow is guaranteed to be readable
+     * multiple times.
+     */
+    public val messageFlow: Flow<DeviceMessage>
+
+    /**
+     * Send an action request and suspend caller while request is being processed.
+     * Could return null if request does not return a meaningful answer.
+     */
+    public suspend fun execute(actionName: String, argument: Meta? = null): Meta?
+
+    /**
+     * Initialize the device. This function suspends until the device is finished initialization
+     */
+    public suspend fun open(): Unit = Unit
+
+    /**
+     * Close and terminate the device. This function does not wait for the device to be closed.
+     */
+    override fun close() {
+        logger.info { "Device $this is closed" }
+        cancel("The device is closed")
+    }
+
+    @DFExperimental
+    public val lifecycleState: DeviceLifecycleState
+
+    public companion object {
+        public const val DEVICE_TARGET: String = "device"
+    }
+}
+
+/**
+ * Get the logical state of property or suspend to read the physical value.
+ */
+public suspend fun Device.getOrReadProperty(propertyName: String): Meta =
+    getProperty(propertyName) ?: readProperty(propertyName)
+
+/**
+ * Get a snapshot of the device logical state
+ *
+ */
+public fun Device.getAllProperties(): Meta = Meta {
+    for (descriptor in propertyDescriptors) {
+        setMeta(Name.parse(descriptor.name), getProperty(descriptor.name))
+    }
+}
+
+/**
+ * Subscribe on property changes for the whole device
+ */
+public fun Device.onPropertyChange(callback: suspend PropertyChangedMessage.() -> Unit): Job =
+    messageFlow.filterIsInstance<PropertyChangedMessage>().onEach(callback).launchIn(this)

controls-core/src/commonMain/kotlin/space/kscience/controls/api/DeviceHub.kt

@@ -0,0 +1,73 @@
+package space.kscience.controls.api
+
+import space.kscience.dataforge.meta.Meta
+import space.kscience.dataforge.names.*
+import space.kscience.dataforge.provider.Provider
+
+/**
+ * A hub that could locate multiple devices and redirect actions to them
+ */
+public interface DeviceHub : Provider {
+    public val devices: Map<NameToken, Device>
+
+    override val defaultTarget: String get() = Device.DEVICE_TARGET
+
+    override val defaultChainTarget: String get() = Device.DEVICE_TARGET
+
+    override fun content(target: String): Map<Name, Any> = if (target == Device.DEVICE_TARGET) {
+        buildMap {
+            fun putAll(prefix: Name, hub: DeviceHub) {
+                hub.devices.forEach {
+                    put(prefix + it.key, it.value)
+                }
+            }
+
+            devices.forEach {
+                val name = it.key.asName()
+                put(name, it.value)
+                (it.value as? DeviceHub)?.let { hub ->
+                    putAll(name, hub)
+                }
+            }
+        }
+    } else {
+        emptyMap()
+    }
+
+    public companion object
+}
+
+public operator fun DeviceHub.get(nameToken: NameToken): Device =
+    devices[nameToken] ?: error("Device with name $nameToken not found in $this")
+
+public fun DeviceHub.getOrNull(name: Name): Device? = when {
+    name.isEmpty() -> this as? Device
+    name.length == 1 -> get(name.firstOrNull()!!)
+    else -> (get(name.firstOrNull()!!) as? DeviceHub)?.getOrNull(name.cutFirst())
+}
+
+public operator fun DeviceHub.get(name: Name): Device =
+    getOrNull(name) ?: error("Device with name $name not found in $this")
+
+public fun DeviceHub.getOrNull(nameString: String): Device? = getOrNull(Name.parse(nameString))
+
+public operator fun DeviceHub.get(nameString: String): Device =
+    getOrNull(nameString) ?: error("Device with name $nameString not found in $this")
+
+public suspend fun DeviceHub.readProperty(deviceName: Name, propertyName: String): Meta =
+    this[deviceName].readProperty(propertyName)
+
+public suspend fun DeviceHub.writeProperty(deviceName: Name, propertyName: String, value: Meta) {
+    this[deviceName].writeProperty(propertyName, value)
+}
+
+public suspend fun DeviceHub.execute(deviceName: Name, command: String, argument: Meta?): Meta? =
+    this[deviceName].execute(command, argument)
+
+
+//suspend fun DeviceHub.respond(request: Envelope): EnvelopeBuilder {
+//    val target = request.meta[DeviceMessage.TARGET_KEY].string ?: defaultTarget
+//    val device = this[target.toName()]
+//
+//    return device.respond(device, target, request)
+//}

controls-core/src/commonMain/kotlin/space/kscience/controls/api/DeviceMessage.kt

@@ -0,0 +1,234 @@
+@file:OptIn(ExperimentalSerializationApi::class)
+
+package space.kscience.controls.api
+
+import kotlinx.datetime.Clock
+import kotlinx.datetime.Instant
+import kotlinx.serialization.EncodeDefault
+import kotlinx.serialization.ExperimentalSerializationApi
+import kotlinx.serialization.SerialName
+import kotlinx.serialization.Serializable
+import kotlinx.serialization.json.Json
+import kotlinx.serialization.json.decodeFromJsonElement
+import kotlinx.serialization.json.encodeToJsonElement
+import space.kscience.dataforge.io.Envelope
+import space.kscience.dataforge.meta.Meta
+import space.kscience.dataforge.meta.toJson
+import space.kscience.dataforge.meta.toMeta
+import space.kscience.dataforge.names.Name
+
+@Serializable
+public sealed class DeviceMessage {
+    public abstract val sourceDevice: Name?
+    public abstract val targetDevice: Name?
+    public abstract val comment: String?
+    public abstract val time: Instant?
+
+    /**
+     * Update the source device name for composition. If the original name is null, resulting name is also null.
+     */
+    public abstract fun changeSource(block: (Name) -> Name): DeviceMessage
+
+    public companion object {
+        public fun error(
+            cause: Throwable,
+            sourceDevice: Name,
+            targetDevice: Name? = null,
+        ): DeviceErrorMessage = DeviceErrorMessage(
+            errorMessage = cause.message,
+            errorType = cause::class.simpleName,
+            errorStackTrace = cause.stackTraceToString(),
+            sourceDevice = sourceDevice,
+            targetDevice = targetDevice
+        )
+
+        public fun fromMeta(meta: Meta): DeviceMessage = Json.decodeFromJsonElement(meta.toJson())
+    }
+}
+
+/**
+ * Notify that property is changed. [sourceDevice] is mandatory.
+ * [property] corresponds to property name.
+ *
+ */
+@Serializable
+@SerialName("property.changed")
+public data class PropertyChangedMessage(
+    public val property: String,
+    public val value: Meta,
+    override val sourceDevice: Name = Name.EMPTY,
+    override val targetDevice: Name? = null,
+    override val comment: String? = null,
+    @EncodeDefault override val time: Instant? = Clock.System.now(),
+) : DeviceMessage() {
+    override fun changeSource(block: (Name) -> Name): DeviceMessage = copy(sourceDevice = block(sourceDevice))
+}
+
+/**
+ * A command to set or invalidate property. [targetDevice] is mandatory.
+ */
+@Serializable
+@SerialName("property.set")
+public data class PropertySetMessage(
+    public val property: String,
+    public val value: Meta?,
+    override val sourceDevice: Name? = null,
+    override val targetDevice: Name,
+    override val comment: String? = null,
+    @EncodeDefault override val time: Instant? = Clock.System.now(),
+) : DeviceMessage() {
+    override fun changeSource(block: (Name) -> Name): DeviceMessage = copy(sourceDevice = sourceDevice?.let(block))
+}
+
+/**
+ * A command to request property value asynchronously. [targetDevice] is mandatory.
+ * The property value should be returned asynchronously via [PropertyChangedMessage].
+ */
+@Serializable
+@SerialName("property.get")
+public data class PropertyGetMessage(
+    public val property: String,
+    override val sourceDevice: Name? = null,
+    override val targetDevice: Name,
+    override val comment: String? = null,
+    @EncodeDefault override val time: Instant? = Clock.System.now(),
+) : DeviceMessage() {
+    override fun changeSource(block: (Name) -> Name): DeviceMessage = copy(sourceDevice = sourceDevice?.let(block))
+}
+
+/**
+ * Request device description. The result is returned in form of [DescriptionMessage]
+ */
+@Serializable
+@SerialName("description.get")
+public data class GetDescriptionMessage(
+    override val sourceDevice: Name? = null,
+    override val targetDevice: Name,
+    override val comment: String? = null,
+    @EncodeDefault override val time: Instant? = Clock.System.now(),
+) : DeviceMessage() {
+    override fun changeSource(block: (Name) -> Name): DeviceMessage = copy(sourceDevice = sourceDevice?.let(block))
+}
+
+/**
+ * The full device description message
+ */
+@Serializable
+@SerialName("description")
+public data class DescriptionMessage(
+    val description: Meta,
+    val properties: Collection<PropertyDescriptor>,
+    val actions: Collection<ActionDescriptor>,
+    override val sourceDevice: Name,
+    override val targetDevice: Name? = null,
+    override val comment: String? = null,
+    @EncodeDefault override val time: Instant? = Clock.System.now(),
+) : DeviceMessage() {
+    override fun changeSource(block: (Name) -> Name): DeviceMessage = copy(sourceDevice = block(sourceDevice))
+}
+
+/**
+ * A request to execute an action. [targetDevice] is mandatory
+ *
+ * @param requestId action request id that should be returned in a response
+ */
+@Serializable
+@SerialName("action.execute")
+public data class ActionExecuteMessage(
+    public val action: String,
+    public val argument: Meta?,
+    public val requestId: String,
+    override val sourceDevice: Name? = null,
+    override val targetDevice: Name,
+    override val comment: String? = null,
+    @EncodeDefault override val time: Instant? = Clock.System.now(),
+) : DeviceMessage() {
+    override fun changeSource(block: (Name) -> Name): DeviceMessage = copy(sourceDevice = sourceDevice?.let(block))
+}
+
+/**
+ * Asynchronous action result. [sourceDevice] is mandatory
+ *
+ * @param requestId request id passed in the request
+ */
+@Serializable
+@SerialName("action.result")
+public data class ActionResultMessage(
+    public val action: String,
+    public val result: Meta?,
+    public val requestId: String,
+    override val sourceDevice: Name,
+    override val targetDevice: Name? = null,
+    override val comment: String? = null,
+    @EncodeDefault override val time: Instant? = Clock.System.now(),
+) : DeviceMessage() {
+    override fun changeSource(block: (Name) -> Name): DeviceMessage = copy(sourceDevice = block(sourceDevice))
+}
+
+/**
+ * Notifies listeners that a new binary with given [binaryID] is available. The binary itself could not be provided via [DeviceMessage] API.
+ */
+@Serializable
+@SerialName("binary.notification")
+public data class BinaryNotificationMessage(
+    val binaryID: String,
+    override val sourceDevice: Name,
+    override val targetDevice: Name? = null,
+    override val comment: String? = null,
+    @EncodeDefault override val time: Instant? = Clock.System.now(),
+) : DeviceMessage() {
+    override fun changeSource(block: (Name) -> Name): DeviceMessage = copy(sourceDevice = block(sourceDevice))
+}
+
+/**
+ * The message states that the message is received, but no meaningful response is produced.
+ * This message could be used for a heartbeat.
+ */
+@Serializable
+@SerialName("empty")
+public data class EmptyDeviceMessage(
+    override val sourceDevice: Name? = null,
+    override val targetDevice: Name? = null,
+    override val comment: String? = null,
+    @EncodeDefault override val time: Instant? = Clock.System.now(),
+) : DeviceMessage() {
+    override fun changeSource(block: (Name) -> Name): DeviceMessage = copy(sourceDevice = sourceDevice?.let(block))
+}
+
+/**
+ * Information log message
+ */
+@Serializable
+@SerialName("log")
+public data class DeviceLogMessage(
+    val message: String,
+    val data: Meta? = null,
+    override val sourceDevice: Name? = null,
+    override val targetDevice: Name? = null,
+    override val comment: String? = null,
+    @EncodeDefault override val time: Instant? = Clock.System.now(),
+) : DeviceMessage() {
+    override fun changeSource(block: (Name) -> Name): DeviceMessage = copy(sourceDevice = sourceDevice?.let(block))
+}
+
+/**
+ * The evaluation of the message produced a service error
+ */
+@Serializable
+@SerialName("error")
+public data class DeviceErrorMessage(
+    public val errorMessage: String?,
+    public val errorType: String? = null,
+    public val errorStackTrace: String? = null,
+    override val sourceDevice: Name,
+    override val targetDevice: Name? = null,
+    override val comment: String? = null,
+    @EncodeDefault override val time: Instant? = Clock.System.now(),
+) : DeviceMessage() {
+    override fun changeSource(block: (Name) -> Name): DeviceMessage = copy(sourceDevice = block(sourceDevice))
+}
+
+
+public fun DeviceMessage.toMeta(): Meta = Json.encodeToJsonElement(this).toMeta()
+
+public fun DeviceMessage.toEnvelope(): Envelope = Envelope(toMeta(), null)

controls-core/src/commonMain/kotlin/space/kscience/controls/api/Socket.kt

@@ -0,0 +1,33 @@
+package space.kscience.controls.api
+
+import io.ktor.utils.io.core.Closeable
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Job
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.launch
+
+/**
+ * A generic bidirectional sender/receiver object
+ */
+public interface Socket<T> : Closeable {
+    /**
+     * Send an object to the socket
+     */
+    public suspend fun send(data: T)
+
+    /**
+     * Flow of objects received from socket
+     */
+    public fun receiving(): Flow<T>
+    public fun isOpen(): Boolean
+}
+
+/**
+ * Connect an input to this socket using designated [scope] for it and return a handler [Job].
+ * Multiple inputs could be connected to the same [Socket].
+ */
+public fun <T> Socket<T>.connectInput(scope: CoroutineScope, flow: Flow<T>): Job = scope.launch {
+    flow.collect { send(it) }
+}
+
+

controls-core/src/commonMain/kotlin/space/kscience/controls/api/descriptors.kt

@@ -0,0 +1,32 @@
+package space.kscience.controls.api
+
+import kotlinx.serialization.Serializable
+import space.kscience.dataforge.meta.descriptors.MetaDescriptor
+import space.kscience.dataforge.meta.descriptors.MetaDescriptorBuilder
+
+//TODO add proper builders
+
+/**
+ * A descriptor for property
+ */
+@Serializable
+public class PropertyDescriptor(
+    public val name: String,
+    public var info: String? = null,
+    public var metaDescriptor: MetaDescriptor = MetaDescriptor(),
+    public var readable: Boolean = true,
+    public var writable: Boolean = false
+)
+
+public fun PropertyDescriptor.metaDescriptor(block: MetaDescriptorBuilder.()->Unit){
+    metaDescriptor = MetaDescriptor(block)
+}
+
+/**
+ * A descriptor for property
+ */
+@Serializable
+public class ActionDescriptor(public val name: String) {
+    public var info: String? = null
+}
+

controls-core/src/commonMain/kotlin/space/kscience/controls/manager/DeviceManager.kt

@@ -0,0 +1,76 @@
+package space.kscience.controls.manager
+
+import kotlinx.coroutines.launch
+import space.kscience.controls.api.Device
+import space.kscience.controls.api.DeviceHub
+import space.kscience.controls.api.getOrNull
+import space.kscience.dataforge.context.*
+import space.kscience.dataforge.meta.Meta
+import space.kscience.dataforge.meta.MutableMeta
+import space.kscience.dataforge.names.Name
+import space.kscience.dataforge.names.NameToken
+import kotlin.collections.set
+import kotlin.properties.ReadOnlyProperty
+
+/**
+ * DataForge Context plugin that allows to manage devices locally
+ */
+public class DeviceManager : AbstractPlugin(), DeviceHub {
+    override val tag: PluginTag get() = Companion.tag
+
+    /**
+     * Actual list of connected devices
+     */
+    private val top = HashMap<NameToken, Device>()
+    override val devices: Map<NameToken, Device> get() = top
+
+    public fun registerDevice(name: NameToken, device: Device) {
+        top[name] = device
+    }
+
+    override fun content(target: String): Map<Name, Any> = super<DeviceHub>.content(target)
+
+    public companion object : PluginFactory<DeviceManager> {
+        override val tag: PluginTag = PluginTag("devices", group = PluginTag.DATAFORGE_GROUP)
+
+        override fun build(context: Context, meta: Meta): DeviceManager = DeviceManager()
+    }
+}
+
+public fun <D : Device> DeviceManager.install(name: String, device: D): D {
+    registerDevice(NameToken(name), device)
+    device.launch {
+        device.open()
+    }
+    return device
+}
+
+
+/**
+ * Register and start a device built by [factory] with current [Context] and [meta].
+ */
+public fun <D : Device> DeviceManager.install(name: String, factory: Factory<D>, meta: Meta = Meta.EMPTY): D =
+    install(name, factory(meta, context))
+
+/**
+ * A delegate that initializes device on the first use
+ */
+public inline fun <D : Device> DeviceManager.installing(
+    factory: Factory<D>,
+    builder: MutableMeta.() -> Unit = {},
+): ReadOnlyProperty<Any?, D> {
+    val meta = Meta(builder)
+    return ReadOnlyProperty { _, property ->
+        val name = property.name
+        val current = getOrNull(name)
+        if (current == null) {
+            install(name, factory, meta)
+        } else if (current.meta != meta) {
+            error("Meta mismatch. Current device meta: ${current.meta}, but factory meta is $meta")
+        } else {
+            @Suppress("UNCHECKED_CAST")
+            current as D
+        }
+    }
+}
+

controls-core/src/commonMain/kotlin/space/kscience/controls/manager/respondMessage.kt

@@ -0,0 +1,112 @@
+package space.kscience.controls.manager
+
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.MutableSharedFlow
+import kotlinx.coroutines.flow.launchIn
+import kotlinx.coroutines.flow.onEach
+import space.kscience.controls.api.*
+import space.kscience.dataforge.names.Name
+import space.kscience.dataforge.names.plus
+
+/**
+ * Process a message targeted at this [Device], assuming its name is [deviceTarget].
+ */
+public suspend fun Device.respondMessage(deviceTarget: Name, request: DeviceMessage): DeviceMessage? = try {
+    when (request) {
+        is PropertyGetMessage -> {
+            PropertyChangedMessage(
+                property = request.property,
+                value = getOrReadProperty(request.property),
+                sourceDevice = deviceTarget,
+                targetDevice = request.sourceDevice
+            )
+        }
+
+        is PropertySetMessage -> {
+            if (request.value == null) {
+                invalidate(request.property)
+            } else {
+                writeProperty(request.property, request.value)
+            }
+            PropertyChangedMessage(
+                property = request.property,
+                value = getOrReadProperty(request.property),
+                sourceDevice = deviceTarget,
+                targetDevice = request.sourceDevice
+            )
+        }
+
+        is ActionExecuteMessage -> {
+            ActionResultMessage(
+                action = request.action,
+                result = execute(request.action, request.argument),
+                requestId = request.requestId,
+                sourceDevice = deviceTarget,
+                targetDevice = request.sourceDevice
+            )
+        }
+
+        is GetDescriptionMessage -> {
+            DescriptionMessage(
+                description = meta,
+                properties = propertyDescriptors,
+                actions = actionDescriptors,
+                sourceDevice = deviceTarget,
+                targetDevice = request.sourceDevice
+            )
+        }
+
+        is DescriptionMessage,
+        is PropertyChangedMessage,
+        is ActionResultMessage,
+        is BinaryNotificationMessage,
+        is DeviceErrorMessage,
+        is EmptyDeviceMessage,
+        is DeviceLogMessage,
+        -> null
+    }
+} catch (ex: Exception) {
+    DeviceMessage.error(ex, sourceDevice = deviceTarget, targetDevice = request.sourceDevice)
+}
+
+/**
+ * Process incoming [DeviceMessage], using hub naming to evaluate target.
+ */
+public suspend fun DeviceHub.respondHubMessage(request: DeviceMessage): DeviceMessage? {
+    return try {
+        val targetName = request.targetDevice ?: return null
+        val device = getOrNull(targetName) ?: error("The device with name $targetName not found in $this")
+        device.respondMessage(targetName, request)
+    } catch (ex: Exception) {
+        DeviceMessage.error(ex, sourceDevice = Name.EMPTY, targetDevice = request.sourceDevice)
+    }
+}
+
+/**
+ * Collect all messages from given [DeviceHub], applying proper relative names.
+ */
+public fun DeviceHub.hubMessageFlow(scope: CoroutineScope): Flow<DeviceMessage> {
+    
+    //TODO could we avoid using downstream scope?
+    val outbox = MutableSharedFlow<DeviceMessage>()
+    if (this is Device) {
+        messageFlow.onEach {
+            outbox.emit(it)
+        }.launchIn(scope)
+    }
+    //TODO maybe better create map of all devices to limit copying
+    devices.forEach { (token, childDevice) ->
+        val flow = if (childDevice is DeviceHub) {
+            childDevice.hubMessageFlow(scope)
+        } else {
+            childDevice.messageFlow
+        }
+        flow.onEach { deviceMessage ->
+            outbox.emit(
+                deviceMessage.changeSource { token + it }
+            )
+        }.launchIn(scope)
+    }
+    return outbox
+}

controls-core/src/commonMain/kotlin/space/kscience/controls/misc/timeMeta.kt

@@ -0,0 +1,18 @@
+package space.kscience.controls.misc
+
+import kotlinx.datetime.Instant
+import space.kscience.dataforge.meta.Meta
+import space.kscience.dataforge.meta.get
+import space.kscience.dataforge.meta.long
+
+// TODO move to core
+
+public fun Instant.toMeta(): Meta = Meta {
+    "seconds" put epochSeconds
+    "nanos" put nanosecondsOfSecond
+}
+
+public fun Meta.instant(): Instant = value?.long?.let { Instant.fromEpochMilliseconds(it) } ?: Instant.fromEpochSeconds(
+    get("seconds")?.long ?: 0L,
+    get("nanos")?.long ?: 0L,
+)

controls-core/src/commonMain/kotlin/space/kscience/controls/ports/Port.kt

@@ -1,24 +1,38 @@
-package hep.dataforge.control.ports
+package space.kscience.controls.ports
 
-import hep.dataforge.context.Context
-import hep.dataforge.context.ContextAware
-import hep.dataforge.context.Factory
 import kotlinx.coroutines.*
 import kotlinx.coroutines.channels.Channel
 import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.flow.receiveAsFlow
-import kotlinx.io.Closeable
+import space.kscience.controls.api.Socket
+import space.kscience.dataforge.context.*
+import space.kscience.dataforge.misc.Type
 import kotlin.coroutines.CoroutineContext
 
-public interface Port: Closeable, ContextAware {
-    public suspend fun send(data: ByteArray)
-    public suspend fun receiving(): Flow<ByteArray>
-    public fun isOpen(): Boolean
+/**
+ * Raw [ByteArray] port
+ */
+public interface Port : ContextAware, Socket<ByteArray>
+
+/**
+ * A specialized factory for [Port]
+ */
+@Type(PortFactory.TYPE)
+public interface PortFactory : Factory<Port> {
+    public val type: String
+
+    public companion object {
+        public const val TYPE: String = "controls.port"
+    }
 }
 
-public typealias PortFactory = Factory<Port>
-
-public abstract class AbstractPort(override val context: Context, coroutineContext: CoroutineContext = context.coroutineContext) : Port {
+/**
+ * Common abstraction for [Port] based on [Channel]
+ */
+public abstract class AbstractPort(
+    override val context: Context,
+    coroutineContext: CoroutineContext = context.coroutineContext,
+) : Port {
 
     protected val scope: CoroutineScope = CoroutineScope(coroutineContext + SupervisorJob(coroutineContext[Job]))
 
@@ -39,18 +53,16 @@ public abstract class AbstractPort(override val context: Context, coroutineConte
     /**
      * Internal method to receive data synchronously
      */
-    protected fun receive(data: ByteArray) {
-        scope.launch {
-            logger.debug { "[${this@AbstractPort}] RECEIVED: ${data.decodeToString()}" }
-            incoming.send(data)
-        }
+    protected suspend fun receive(data: ByteArray) {
+        logger.debug { "${this@AbstractPort} RECEIVED: ${data.decodeToString()}" }
+        incoming.send(data)
     }
 
     private val sendJob = scope.launch {
         for (data in outgoing) {
             try {
                 write(data)
-                logger.debug { "[${this@AbstractPort}] SENT: ${data.decodeToString()}" }
+                logger.debug { "${this@AbstractPort} SENT: ${data.decodeToString()}" }
             } catch (ex: Exception) {
                 if (ex is CancellationException) throw ex
                 logger.error(ex) { "Error while writing data to the port" }
@@ -67,12 +79,10 @@ public abstract class AbstractPort(override val context: Context, coroutineConte
 
     /**
      * Raw flow of incoming data chunks. The chunks are not guaranteed to be complete phrases.
-     * In order to form phrases some condition should used on top of it.
-     * For example [delimitedIncoming] generates phrases with fixed delimiter.
+     * In order to form phrases, some condition should be used on top of it.
+     * For example [stringsDelimitedIncoming] generates phrases with fixed delimiter.
      */
-    override suspend fun receiving(): Flow<ByteArray> {
-        return incoming.receiveAsFlow()
-    }
+    override fun receiving(): Flow<ByteArray> = incoming.receiveAsFlow()
 
     override fun close() {
         outgoing.close()

controls-core/src/commonMain/kotlin/space/kscience/controls/ports/PortProxy.kt

@@ -1,15 +1,12 @@
-package hep.dataforge.control.ports
+package space.kscience.controls.ports
 
-import hep.dataforge.context.Context
-import hep.dataforge.context.ContextAware
-import hep.dataforge.context.Global
 import kotlinx.coroutines.ExperimentalCoroutinesApi
 import kotlinx.coroutines.flow.Flow
-import kotlinx.coroutines.flow.channelFlow
-import kotlinx.coroutines.flow.collect
-import kotlinx.coroutines.isActive
+import kotlinx.coroutines.flow.flow
+import kotlinx.coroutines.launch
 import kotlinx.coroutines.sync.Mutex
 import kotlinx.coroutines.sync.withLock
+import space.kscience.dataforge.context.*
 
 /**
  * A port that could be closed multiple times and opens automatically on request
@@ -31,40 +28,37 @@ public class PortProxy(override val context: Context = Global, public val factor
         }
     }
 
-    /**
-     * Ensure that the port is open. If it is already open, does nothing. Otherwise, open a new port.
-     */
-    public suspend fun open() {
-        port()//ignore result
-    }
-
     override suspend fun send(data: ByteArray) {
         port().send(data)
     }
 
     @OptIn(ExperimentalCoroutinesApi::class)
-    override suspend fun receiving(): Flow<ByteArray> = channelFlow {
-        while (isActive) {
+    override fun receiving(): Flow<ByteArray> = flow {
+        while (true) {
             try {
-                //recreate port and Flow on cancel
+                //recreate port and Flow on connection problems
                 port().receiving().collect {
-                    send(it)
+                    emit(it)
                 }
             } catch (t: Throwable) {
-                logger.warn(t){"Port read failed. Reconnecting."}
-                //cancel
-//                if (t is CancellationException) {
-//                    cancel(t)
-//                }
+                logger.warn{"Port read failed: ${t.message}. Reconnecting."}
+                mutex.withLock {
+                    actualPort?.close()
+                    actualPort = null
+                }
             }
         }
-    }// port().receiving()
+    }
 
     // open by default
     override fun isOpen(): Boolean = true
 
     override fun close() {
-        actualPort?.close()
-        actualPort = null
+        context.launch {
+            mutex.withLock {
+                actualPort?.close()
+                actualPort = null
+            }
+        }
     }
 }

controls-core/src/commonMain/kotlin/space/kscience/controls/ports/Ports.kt

@@ -0,0 +1,37 @@
+package space.kscience.controls.ports
+
+import space.kscience.dataforge.context.*
+import space.kscience.dataforge.meta.Meta
+import space.kscience.dataforge.meta.string
+
+/**
+ * A DataForge plugin for managing ports
+ */
+public class Ports : AbstractPlugin() {
+
+    override val tag: PluginTag get() = Companion.tag
+
+    private val portFactories by lazy {
+        context.gather<PortFactory>(PortFactory.TYPE)
+    }
+
+    private val portCache = mutableMapOf<Meta, Port>()
+
+    /**
+     * Create a new [Port] according to specification
+     */
+    public fun buildPort(meta: Meta): Port = portCache.getOrPut(meta) {
+        val type by meta.string { error("Port type is not defined") }
+        val factory = portFactories.values.firstOrNull { it.type == type }
+            ?: error("Port factory for type $type not found")
+        factory.build(context, meta)
+    }
+
+    public companion object : PluginFactory<Ports> {
+
+        override val tag: PluginTag = PluginTag("controls.ports", group = PluginTag.DATAFORGE_GROUP)
+
+        override fun build(context: Context, meta: Meta): Ports = Ports()
+
+    }
+}

controls-core/src/commonMain/kotlin/space/kscience/controls/ports/SynchronousPort.kt

@@ -0,0 +1,42 @@
+package space.kscience.controls.ports
+
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.first
+import kotlinx.coroutines.sync.Mutex
+import kotlinx.coroutines.sync.withLock
+
+/**
+ * A port handler for synchronous (request-response) communication with a port. Only one request could be active at a time (others are suspended.
+ * The handler does not guarantee exclusive access to the port so the user mush ensure that no other controller handles port at the moment.
+ */
+public class SynchronousPort(public val port: Port, private val mutex: Mutex) : Port by port {
+    /**
+     * Send a single message and wait for the flow of respond messages.
+     */
+    public suspend fun <R> respond(data: ByteArray, transform: suspend Flow<ByteArray>.() -> R): R = mutex.withLock {
+        port.send(data)
+        transform(port.receiving())
+    }
+}
+
+/**
+ * Provide a synchronous wrapper for a port
+ */
+public fun Port.synchronous(mutex: Mutex = Mutex()): SynchronousPort = SynchronousPort(this, mutex)
+
+/**
+ * Send request and read incoming data blocks until the delimiter is encountered
+ */
+public suspend fun SynchronousPort.respondWithDelimiter(
+    data: ByteArray,
+    delimiter: ByteArray,
+): ByteArray = respond(data) {
+    withDelimiter(delimiter).first()
+}
+
+public suspend fun SynchronousPort.respondStringWithDelimiter(
+    data: String,
+    delimiter: String,
+): String = respond(data.encodeToByteArray()) {
+    withStringDelimiter(delimiter).first()
+}

controls-core/src/commonMain/kotlin/space/kscience/controls/ports/phrases.kt

@@ -1,21 +1,22 @@
-package hep.dataforge.control.ports
+package space.kscience.controls.ports
 
+import io.ktor.utils.io.core.BytePacketBuilder
+import io.ktor.utils.io.core.readBytes
+import io.ktor.utils.io.core.reset
 import kotlinx.coroutines.flow.Flow
-import kotlinx.coroutines.flow.collect
-import kotlinx.coroutines.flow.flow
 import kotlinx.coroutines.flow.map
-import kotlinx.io.ByteArrayOutput
+import kotlinx.coroutines.flow.transform
 
 /**
- * Transform byte fragments into complete phrases using given delimiter
+ * Transform byte fragments into complete phrases using given delimiter. Not thread safe.
  */
-public fun Flow<ByteArray>.withDelimiter(delimiter: ByteArray, expectedMessageSize: Int = 32): Flow<ByteArray> = flow {
+public fun Flow<ByteArray>.withDelimiter(delimiter: ByteArray): Flow<ByteArray> {
     require(delimiter.isNotEmpty()) { "Delimiter must not be empty" }
 
-    var output = ByteArrayOutput(expectedMessageSize)
+    val output = BytePacketBuilder()
     var matcherPosition = 0
 
-    collect { chunk ->
+    return transform { chunk ->
         chunk.forEach { byte ->
             output.writeByte(byte)
             //matching current symbol in delimiter
@@ -23,8 +24,9 @@ public fun Flow<ByteArray>.withDelimiter(delimiter: ByteArray, expectedMessageSi
                 matcherPosition++
                 if (matcherPosition == delimiter.size) {
                     //full match achieved, sending result
-                    emit(output.toByteArray())
-                    output = ByteArrayOutput(expectedMessageSize)
+                    val bytes = output.build()
+                    emit(bytes.readBytes())
+                    output.reset()
                     matcherPosition = 0
                 }
             } else if (matcherPosition > 0) {
@@ -38,12 +40,16 @@ public fun Flow<ByteArray>.withDelimiter(delimiter: ByteArray, expectedMessageSi
 /**
  * Transform byte fragments into utf-8 phrases using utf-8 delimiter
  */
-public fun Flow<ByteArray>.withDelimiter(delimiter: String, expectedMessageSize: Int = 32): Flow<String> {
+public fun Flow<ByteArray>.withStringDelimiter(delimiter: String): Flow<String> {
     return withDelimiter(delimiter.encodeToByteArray()).map { it.decodeToString() }
 }
 
 /**
  * A flow of delimited phrases
  */
-public suspend fun Port.delimitedIncoming(delimiter: ByteArray, expectedMessageSize: Int = 32): Flow<ByteArray> =
-    receiving().withDelimiter(delimiter, expectedMessageSize)
+public fun Port.delimitedIncoming(delimiter: ByteArray): Flow<ByteArray> = receiving().withDelimiter(delimiter)
+
+/**
+ * A flow of delimited phrases with string content
+ */
+public fun Port.stringsDelimitedIncoming(delimiter: String): Flow<String> = receiving().withStringDelimiter(delimiter)

controls-core/src/commonMain/kotlin/space/kscience/controls/spec/DeviceBase.kt

@@ -0,0 +1,179 @@
+package space.kscience.controls.spec
+
+import kotlinx.coroutines.*
+import kotlinx.coroutines.flow.MutableSharedFlow
+import kotlinx.coroutines.flow.SharedFlow
+import kotlinx.coroutines.sync.Mutex
+import kotlinx.coroutines.sync.withLock
+import space.kscience.controls.api.*
+import space.kscience.dataforge.context.Context
+import space.kscience.dataforge.context.error
+import space.kscience.dataforge.context.logger
+import space.kscience.dataforge.meta.Meta
+import space.kscience.dataforge.misc.DFExperimental
+import kotlin.coroutines.CoroutineContext
+
+
+@OptIn(InternalDeviceAPI::class)
+private suspend fun <D : Device, T> WritableDevicePropertySpec<D, T>.writeMeta(device: D, item: Meta) {
+    write(device, converter.metaToObject(item) ?: error("Meta $item could not be read with $converter"))
+}
+
+@OptIn(InternalDeviceAPI::class)
+private suspend fun <D : Device, T> DevicePropertySpec<D, T>.readMeta(device: D): Meta? =
+    read(device)?.let(converter::objectToMeta)
+
+
+private suspend fun <D : Device, I, O> DeviceActionSpec<D, I, O>.executeWithMeta(
+    device: D,
+    item: Meta,
+): Meta? {
+    val arg: I = inputConverter.metaToObject(item) ?: error("Failed to convert $item with $inputConverter")
+    val res = execute(device, arg)
+    return res?.let { outputConverter.objectToMeta(res) }
+}
+
+
+/**
+ * A base abstractions for [Device], introducing specifications for properties
+ */
+public abstract class DeviceBase<D : Device>(
+    final override val context: Context,
+    override val meta: Meta = Meta.EMPTY,
+) : Device {
+
+    /**
+     * Collection of property specifications
+     */
+    public abstract val properties: Map<String, DevicePropertySpec<D, *>>
+
+    /**
+     * Collection of action specifications
+     */
+    public abstract val actions: Map<String, DeviceActionSpec<D, *, *>>
+
+    override val propertyDescriptors: Collection<PropertyDescriptor>
+        get() = properties.values.map { it.descriptor }
+
+    override val actionDescriptors: Collection<ActionDescriptor>
+        get() = actions.values.map { it.descriptor }
+
+    override val coroutineContext: CoroutineContext by lazy {
+        context.newCoroutineContext(
+            SupervisorJob(context.coroutineContext[Job]) +
+                    CoroutineName("Device $this") +
+                    CoroutineExceptionHandler { _, throwable ->
+                        logger.error(throwable) { "Exception in device $this job" }
+                    }
+        )
+    }
+
+
+    /**
+     * Logical state store
+     */
+    private val logicalState: HashMap<String, Meta?> = HashMap()
+
+    private val sharedMessageFlow: MutableSharedFlow<DeviceMessage> = MutableSharedFlow()
+
+    public override val messageFlow: SharedFlow<DeviceMessage> get() = sharedMessageFlow
+
+    @Suppress("UNCHECKED_CAST")
+    internal val self: D
+        get() = this as D
+
+    private val stateLock = Mutex()
+
+    /**
+     * Update logical property state and notify listeners
+     */
+    protected suspend fun updateLogical(propertyName: String, value: Meta?) {
+        if (value != logicalState[propertyName]) {
+            stateLock.withLock {
+                logicalState[propertyName] = value
+            }
+            if (value != null) {
+                sharedMessageFlow.emit(PropertyChangedMessage(propertyName, value))
+            }
+        }
+    }
+
+    /**
+     * Update logical state using given [spec] and its convertor
+     */
+    public suspend fun <T> updateLogical(spec: DevicePropertySpec<D, T>, value: T) {
+        updateLogical(spec.name, spec.converter.objectToMeta(value))
+    }
+
+    /**
+     * Force read physical value and push an update if it is changed. It does not matter if logical state is present.
+     * The logical state is updated after read
+     */
+    override suspend fun readProperty(propertyName: String): Meta {
+        val spec = properties[propertyName] ?: error("Property with name $propertyName not found")
+        val meta = spec.readMeta(self) ?: error("Failed to read property $propertyName")
+        updateLogical(propertyName, meta)
+        return meta
+    }
+
+    /**
+     * Read property if it exists and read correctly. Return null otherwise.
+     */
+    public suspend fun readPropertyOrNull(propertyName: String): Meta? {
+        val spec = properties[propertyName] ?: return null
+        val meta = spec.readMeta(self) ?: return null
+        updateLogical(propertyName, meta)
+        return meta
+    }
+
+    override fun getProperty(propertyName: String): Meta? = logicalState[propertyName]
+
+    override suspend fun invalidate(propertyName: String) {
+        stateLock.withLock {
+            logicalState.remove(propertyName)
+        }
+    }
+
+    override suspend fun writeProperty(propertyName: String, value: Meta): Unit {
+        when (val property = properties[propertyName]) {
+            null -> {
+                //If there is a physical property with a given name, invalidate logical property and write physical one
+                updateLogical(propertyName, value)
+            }
+
+            is WritableDevicePropertySpec -> {
+                invalidate(propertyName)
+                property.writeMeta(self, value)
+            }
+
+            else -> {
+                error("Property $property is not writeable")
+            }
+        }
+    }
+
+    override suspend fun execute(actionName: String, argument: Meta?): Meta? {
+        val spec = actions[actionName] ?: error("Action with name $actionName not found")
+        return spec.executeWithMeta(self, argument ?: Meta.EMPTY)
+    }
+
+    @DFExperimental
+    override var lifecycleState: DeviceLifecycleState = DeviceLifecycleState.INIT
+        protected set
+
+    @OptIn(DFExperimental::class)
+    override suspend fun open() {
+        super.open()
+        lifecycleState = DeviceLifecycleState.OPEN
+    }
+
+    @OptIn(DFExperimental::class)
+    override fun close() {
+        lifecycleState = DeviceLifecycleState.CLOSED
+        super.close()
+    }
+
+    abstract override fun toString(): String
+
+}
+

controls-core/src/commonMain/kotlin/space/kscience/controls/spec/DeviceBySpec.kt

@@ -0,0 +1,30 @@
+package space.kscience.controls.spec
+
+import space.kscience.controls.api.Device
+import space.kscience.dataforge.context.Context
+import space.kscience.dataforge.meta.Meta
+
+/**
+ * A device generated from specification
+ * @param D recursive self-type for properties and actions
+ */
+public open class DeviceBySpec<D : Device>(
+    public val spec: DeviceSpec<in D>,
+    context: Context,
+    meta: Meta = Meta.EMPTY,
+) : DeviceBase<D>(context, meta) {
+    override val properties: Map<String, DevicePropertySpec<D, *>> get() = spec.properties
+    override val actions: Map<String, DeviceActionSpec<D, *, *>> get() = spec.actions
+
+    override suspend fun open(): Unit = with(spec) {
+        super.open()
+        self.onOpen()
+    }
+
+    override fun close(): Unit = with(spec) {
+        self.onClose()
+        super.close()
+    }
+
+    override fun toString(): String = "Device(spec=$spec)"
+}

controls-core/src/commonMain/kotlin/space/kscience/controls/spec/DeviceMetaPropertySpec.kt

@@ -0,0 +1,15 @@
+package space.kscience.controls.spec
+
+import space.kscience.controls.api.Device
+import space.kscience.controls.api.PropertyDescriptor
+import space.kscience.dataforge.meta.Meta
+import space.kscience.dataforge.meta.transformations.MetaConverter
+
+internal object DeviceMetaPropertySpec: DevicePropertySpec<Device,Meta> {
+    override val descriptor: PropertyDescriptor = PropertyDescriptor("@meta")
+
+    override val converter: MetaConverter<Meta> = MetaConverter.meta
+
+    @InternalDeviceAPI
+    override suspend fun read(device: Device): Meta = device.meta
+}

controls-core/src/commonMain/kotlin/space/kscience/controls/spec/DevicePropertySpec.kt

@@ -0,0 +1,163 @@
+package space.kscience.controls.spec
+
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Job
+import kotlinx.coroutines.flow.*
+import kotlinx.coroutines.launch
+import space.kscience.controls.api.ActionDescriptor
+import space.kscience.controls.api.Device
+import space.kscience.controls.api.PropertyChangedMessage
+import space.kscience.controls.api.PropertyDescriptor
+import space.kscience.dataforge.meta.transformations.MetaConverter
+
+
+/**
+ * This API is internal and should not be used in user code
+ */
+@RequiresOptIn("This API should not be called outside of Device internals")
+public annotation class InternalDeviceAPI
+
+/**
+ * Specification for a device read-only property
+ */
+public interface DevicePropertySpec<in D : Device, T> {
+    /**
+     * Property descriptor
+     */
+    public val descriptor: PropertyDescriptor
+
+    /**
+     * Meta item converter for the resulting type
+     */
+    public val converter: MetaConverter<T>
+
+    /**
+     * Read physical value from the given [device]
+     */
+    @InternalDeviceAPI
+    public suspend fun read(device: D): T?
+}
+
+/**
+ * Property name should be unique in a device
+ */
+public val DevicePropertySpec<*, *>.name: String get() = descriptor.name
+
+
+public interface WritableDevicePropertySpec<in D : Device, T> : DevicePropertySpec<D, T> {
+    /**
+     * Write physical value to a device
+     */
+    @InternalDeviceAPI
+    public suspend fun write(device: D, value: T)
+
+}
+
+public interface DeviceActionSpec<in D : Device, I, O> {
+    /**
+     * Action descriptor
+     */
+    public val descriptor: ActionDescriptor
+
+    public val inputConverter: MetaConverter<I>
+
+    public val outputConverter: MetaConverter<O>
+
+    /**
+     * Execute action on a device
+     */
+    public suspend fun execute(device: D, input: I): O
+}
+
+/**
+ * Action name. Should be unique in the device
+ */
+public val DeviceActionSpec<*, *, *>.name: String get() = descriptor.name
+
+public suspend fun <T, D : Device> D.read(propertySpec: DevicePropertySpec<D, T>): T =
+    propertySpec.converter.metaToObject(readProperty(propertySpec.name)) ?: error("Property read result is not valid")
+
+/**
+ * Read typed value and update/push event if needed.
+ * Return null if property read is not successful or property is undefined.
+ */
+public suspend fun <T, D : DeviceBase<D>> D.readOrNull(propertySpec: DevicePropertySpec<D, T>): T? =
+    readPropertyOrNull(propertySpec.name)?.let(propertySpec.converter::metaToObject)
+
+
+public operator fun <T, D : Device> D.get(propertySpec: DevicePropertySpec<D, T>): T? =
+    getProperty(propertySpec.name)?.let(propertySpec.converter::metaToObject)
+
+/**
+ * Write typed property state and invalidate logical state
+ */
+public suspend fun <T, D : Device> D.write(propertySpec: WritableDevicePropertySpec<D, T>, value: T) {
+    writeProperty(propertySpec.name, propertySpec.converter.objectToMeta(value))
+}
+
+/**
+ * Fire and forget variant of property writing. Actual write is performed asynchronously on a [Device] scope
+ */
+public operator fun <T, D : Device> D.set(propertySpec: WritableDevicePropertySpec<D, T>, value: T): Job = launch {
+    write(propertySpec, value)
+}
+
+/**
+ * A type safe flow of property changes for given property
+ */
+public fun <D : Device, T> D.propertyFlow(spec: DevicePropertySpec<D, T>): Flow<T> = messageFlow
+    .filterIsInstance<PropertyChangedMessage>()
+    .filter { it.property == spec.name }
+    .mapNotNull { spec.converter.metaToObject(it.value) }
+
+/**
+ * A type safe property change listener. Uses the device [CoroutineScope].
+ */
+public fun <D : Device, T> D.onPropertyChange(
+    spec: DevicePropertySpec<D, T>,
+    callback: suspend PropertyChangedMessage.(T) -> Unit,
+): Job = messageFlow
+    .filterIsInstance<PropertyChangedMessage>()
+    .filter { it.property == spec.name }
+    .onEach { change ->
+        val newValue = spec.converter.metaToObject(change.value)
+        if (newValue != null) {
+            change.callback(newValue)
+        }
+    }.launchIn(this)
+
+/**
+ * Call [callback] on initial property value and each value change
+ */
+public fun <D : Device, T> D.useProperty(
+    spec: DevicePropertySpec<D, T>,
+    callback: suspend (T) -> Unit,
+): Job = launch {
+    callback(read(spec))
+    messageFlow
+        .filterIsInstance<PropertyChangedMessage>()
+        .filter { it.property == spec.name }
+        .collect { change ->
+            val newValue = spec.converter.metaToObject(change.value)
+            if (newValue != null) {
+                callback(newValue)
+            }
+        }
+}
+
+
+/**
+ * Reset the logical state of a property
+ */
+public suspend fun <D : Device> D.invalidate(propertySpec: DevicePropertySpec<D, *>) {
+    invalidate(propertySpec.name)
+}
+
+/**
+ * Execute the action with name according to [actionSpec]
+ */
+public suspend fun <I, O, D : Device> D.execute(actionSpec: DeviceActionSpec<D, I, O>, input: I): O =
+    actionSpec.execute(this, input)
+
+public suspend fun <O, D : Device> D.execute(actionSpec: DeviceActionSpec<D, Unit, O>): O =
+    actionSpec.execute(this, Unit)

controls-core/src/commonMain/kotlin/space/kscience/controls/spec/DeviceSpec.kt

@@ -0,0 +1,240 @@
+package space.kscience.controls.spec
+
+import kotlinx.coroutines.withContext
+import space.kscience.controls.api.ActionDescriptor
+import space.kscience.controls.api.Device
+import space.kscience.controls.api.PropertyDescriptor
+import space.kscience.dataforge.meta.Meta
+import space.kscience.dataforge.meta.transformations.MetaConverter
+import kotlin.properties.PropertyDelegateProvider
+import kotlin.properties.ReadOnlyProperty
+import kotlin.reflect.KMutableProperty1
+import kotlin.reflect.KProperty
+import kotlin.reflect.KProperty1
+
+public object UnitMetaConverter: MetaConverter<Unit>{
+    override fun metaToObject(meta: Meta): Unit = Unit
+
+    override fun objectToMeta(obj: Unit): Meta = Meta.EMPTY
+}
+
+public val MetaConverter.Companion.unit: MetaConverter<Unit> get() = UnitMetaConverter
+
+@OptIn(InternalDeviceAPI::class)
+public abstract class DeviceSpec<D : Device> {
+    //initializing meta property for everyone
+    private val _properties = hashMapOf<String, DevicePropertySpec<D, *>>(
+        DeviceMetaPropertySpec.name to DeviceMetaPropertySpec
+    )
+    public val properties: Map<String, DevicePropertySpec<D, *>> get() = _properties
+
+    private val _actions = HashMap<String, DeviceActionSpec<D, *, *>>()
+    public val actions: Map<String, DeviceActionSpec<D, *, *>> get() = _actions
+
+
+    public open suspend fun D.onOpen() {
+    }
+
+    public open fun D.onClose() {
+    }
+
+
+    public fun <T, P : DevicePropertySpec<D, T>> registerProperty(deviceProperty: P): P {
+        _properties[deviceProperty.name] = deviceProperty
+        return deviceProperty
+    }
+
+    public fun <T> property(
+        converter: MetaConverter<T>,
+        readOnlyProperty: KProperty1<D, T>,
+        descriptorBuilder: PropertyDescriptor.() -> Unit = {},
+    ): PropertyDelegateProvider<DeviceSpec<D>, ReadOnlyProperty<Any?, DevicePropertySpec<D, T>>> =
+        PropertyDelegateProvider { _, property ->
+            val deviceProperty = object : DevicePropertySpec<D, T> {
+                override val descriptor: PropertyDescriptor = PropertyDescriptor(property.name).apply {
+                    //TODO add type from converter
+                    writable = true
+                }.apply(descriptorBuilder)
+
+                override val converter: MetaConverter<T> = converter
+
+                override suspend fun read(device: D): T = withContext(device.coroutineContext) {
+                    readOnlyProperty.get(device)
+                }
+            }
+            registerProperty(deviceProperty)
+            ReadOnlyProperty { _, _ ->
+                deviceProperty
+            }
+        }
+
+    public fun <T> mutableProperty(
+        converter: MetaConverter<T>,
+        readWriteProperty: KMutableProperty1<D, T>,
+        descriptorBuilder: PropertyDescriptor.() -> Unit = {},
+    ): PropertyDelegateProvider<DeviceSpec<D>, ReadOnlyProperty<Any?, WritableDevicePropertySpec<D, T>>> =
+        PropertyDelegateProvider { _, property ->
+            val deviceProperty = object : WritableDevicePropertySpec<D, T> {
+
+                override val descriptor: PropertyDescriptor = PropertyDescriptor(property.name).apply {
+                    //TODO add the type from converter
+                    writable = true
+                }.apply(descriptorBuilder)
+
+                override val converter: MetaConverter<T> = converter
+
+                override suspend fun read(device: D): T = withContext(device.coroutineContext) {
+                    readWriteProperty.get(device)
+                }
+
+                override suspend fun write(device: D, value: T): Unit = withContext(device.coroutineContext) {
+                    readWriteProperty.set(device, value)
+                }
+            }
+            registerProperty(deviceProperty)
+            ReadOnlyProperty { _, _ ->
+                deviceProperty
+            }
+        }
+
+    public fun <T> property(
+        converter: MetaConverter<T>,
+        descriptorBuilder: PropertyDescriptor.() -> Unit = {},
+        name: String? = null,
+        read: suspend D.() -> T?,
+    ): PropertyDelegateProvider<DeviceSpec<D>, ReadOnlyProperty<DeviceSpec<D>, DevicePropertySpec<D, T>>> =
+        PropertyDelegateProvider { _: DeviceSpec<D>, property ->
+            val propertyName = name ?: property.name
+            val deviceProperty = object : DevicePropertySpec<D, T> {
+                override val descriptor: PropertyDescriptor = PropertyDescriptor(propertyName).apply(descriptorBuilder)
+                override val converter: MetaConverter<T> = converter
+
+                override suspend fun read(device: D): T? = withContext(device.coroutineContext) { device.read() }
+            }
+            registerProperty(deviceProperty)
+            ReadOnlyProperty<DeviceSpec<D>, DevicePropertySpec<D, T>> { _, _ ->
+                deviceProperty
+            }
+        }
+
+    public fun <T> mutableProperty(
+        converter: MetaConverter<T>,
+        descriptorBuilder: PropertyDescriptor.() -> Unit = {},
+        name: String? = null,
+        read: suspend D.() -> T?,
+        write: suspend D.(T) -> Unit,
+    ): PropertyDelegateProvider<DeviceSpec<D>, ReadOnlyProperty<DeviceSpec<D>, WritableDevicePropertySpec<D, T>>> =
+        PropertyDelegateProvider { _: DeviceSpec<D>, property: KProperty<*> ->
+            val propertyName = name ?: property.name
+            val deviceProperty = object : WritableDevicePropertySpec<D, T> {
+                override val descriptor: PropertyDescriptor = PropertyDescriptor(propertyName).apply(descriptorBuilder)
+                override val converter: MetaConverter<T> = converter
+
+                override suspend fun read(device: D): T? = withContext(device.coroutineContext) { device.read() }
+
+                override suspend fun write(device: D, value: T): Unit = withContext(device.coroutineContext) {
+                    device.write(value)
+                }
+            }
+            _properties[propertyName] = deviceProperty
+            ReadOnlyProperty<DeviceSpec<D>, WritableDevicePropertySpec<D, T>> { _, _ ->
+                deviceProperty
+            }
+        }
+
+
+    public fun <I, O> registerAction(deviceAction: DeviceActionSpec<D, I, O>): DeviceActionSpec<D, I, O> {
+        _actions[deviceAction.name] = deviceAction
+        return deviceAction
+    }
+
+    public fun <I, O> action(
+        inputConverter: MetaConverter<I>,
+        outputConverter: MetaConverter<O>,
+        descriptorBuilder: ActionDescriptor.() -> Unit = {},
+        name: String? = null,
+        execute: suspend D.(I) -> O,
+    ): PropertyDelegateProvider<DeviceSpec<D>, ReadOnlyProperty<DeviceSpec<D>, DeviceActionSpec<D, I, O>>> =
+        PropertyDelegateProvider { _: DeviceSpec<D>, property ->
+            val actionName = name ?: property.name
+            val deviceAction = object : DeviceActionSpec<D, I, O> {
+                override val descriptor: ActionDescriptor = ActionDescriptor(actionName).apply(descriptorBuilder)
+
+                override val inputConverter: MetaConverter<I> = inputConverter
+                override val outputConverter: MetaConverter<O> = outputConverter
+
+                override suspend fun execute(device: D, input: I): O = withContext(device.coroutineContext) {
+                    device.execute(input)
+                }
+            }
+            _actions[actionName] = deviceAction
+            ReadOnlyProperty<DeviceSpec<D>, DeviceActionSpec<D, I, O>> { _, _ ->
+                deviceAction
+            }
+        }
+
+    /**
+     * An action that takes [Meta] and returns [Meta]. No conversions are done
+     */
+    public fun metaAction(
+        descriptorBuilder: ActionDescriptor.() -> Unit = {},
+        name: String? = null,
+        execute: suspend D.(Meta) -> Meta,
+    ): PropertyDelegateProvider<DeviceSpec<D>, ReadOnlyProperty<DeviceSpec<D>, DeviceActionSpec<D, Meta, Meta>>> =
+        action(
+            MetaConverter.Companion.meta,
+            MetaConverter.Companion.meta,
+            descriptorBuilder,
+            name
+        ) {
+            execute(it)
+        }
+
+    /**
+     * An action that takes no parameters and returns no values
+     */
+    public fun unitAction(
+        descriptorBuilder: ActionDescriptor.() -> Unit = {},
+        name: String? = null,
+        execute: suspend D.() -> Unit,
+    ): PropertyDelegateProvider<DeviceSpec<D>, ReadOnlyProperty<DeviceSpec<D>, DeviceActionSpec<D, Unit, Unit>>> =
+        action(
+            MetaConverter.Companion.unit,
+            MetaConverter.Companion.unit,
+            descriptorBuilder,
+            name
+        ) {
+            execute()
+        }
+}
+
+
+/**
+ * Register a mutable logical property for a device
+ */
+@OptIn(InternalDeviceAPI::class)
+public fun <T, D : DeviceBase<D>> DeviceSpec<D>.logicalProperty(
+    converter: MetaConverter<T>,
+    descriptorBuilder: PropertyDescriptor.() -> Unit = {},
+    name: String? = null,
+): PropertyDelegateProvider<DeviceSpec<D>, ReadOnlyProperty<Any?, WritableDevicePropertySpec<D, T>>> =
+    PropertyDelegateProvider { _, property ->
+        val deviceProperty = object : WritableDevicePropertySpec<D, T> {
+            val propertyName = name ?: property.name
+            override val descriptor: PropertyDescriptor = PropertyDescriptor(propertyName).apply {
+                //TODO add type from converter
+                writable = true
+            }.apply(descriptorBuilder)
+
+            override val converter: MetaConverter<T> = converter
+
+            override suspend fun read(device: D): T? = device.getProperty(propertyName)?.let(converter::metaToObject)
+
+            override suspend fun write(device: D, value: T): Unit =
+                device.writeProperty(propertyName, converter.objectToMeta(value))
+        }
+        registerProperty(deviceProperty)
+        ReadOnlyProperty { _, _ ->
+            deviceProperty
+        }
+    }

controls-core/src/commonMain/kotlin/space/kscience/controls/spec/deviceExtensions.kt

@@ -0,0 +1,38 @@
+package space.kscience.controls.spec
+
+import kotlinx.coroutines.Job
+import kotlinx.coroutines.delay
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.flow
+import kotlinx.coroutines.isActive
+import kotlinx.coroutines.launch
+import space.kscience.controls.api.Device
+import kotlin.time.Duration
+
+/**
+ * Perform a recurring asynchronous read action and return a flow of results.
+ * The flow is lazy, so action is not performed unless flow is consumed.
+ * The flow uses called context. In order to call it on device context, use `flowOn(coroutineContext)`.
+ *
+ * The flow is canceled when the device scope is canceled
+ */
+public fun <D : Device, R> D.readRecurring(interval: Duration, reader: suspend D.() -> R): Flow<R> = flow {
+    while (isActive) {
+        delay(interval)
+        launch {
+            emit(reader())
+        }
+    }
+}
+
+/**
+ * Do a recurring (with a fixed delay) task on a device.
+ */
+public fun <D : Device> D.doRecurring(interval: Duration, task: suspend D.() -> Unit): Job = launch {
+    while (isActive) {
+        delay(interval)
+        launch {
+            task()
+        }
+    }
+}

controls-core/src/commonMain/kotlin/space/kscience/controls/spec/misc.kt

@@ -0,0 +1,23 @@
+package space.kscience.controls.spec
+
+import space.kscience.dataforge.meta.*
+import space.kscience.dataforge.meta.transformations.MetaConverter
+import kotlin.time.Duration
+import kotlin.time.DurationUnit
+import kotlin.time.toDuration
+
+public fun Double.asMeta(): Meta = Meta(asValue())
+
+//TODO to be moved to DF
+public object DurationConverter : MetaConverter<Duration> {
+    override fun metaToObject(meta: Meta): Duration = meta.value?.double?.toDuration(DurationUnit.SECONDS)
+        ?: run {
+            val unit: DurationUnit = meta["unit"].enum<DurationUnit>() ?: DurationUnit.SECONDS
+            val value = meta[Meta.VALUE_KEY].double ?: error("No value present for Duration")
+            return@run value.toDuration(unit)
+        }
+
+    override fun objectToMeta(obj: Duration): Meta = obj.toDouble(DurationUnit.SECONDS).asMeta()
+}
+
+public val MetaConverter.Companion.duration: MetaConverter<Duration> get() = DurationConverter

controls-core/src/commonMain/kotlin/space/kscience/controls/spec/propertySpecDelegates.kt

@@ -0,0 +1,145 @@
+package space.kscience.controls.spec
+
+import space.kscience.controls.api.Device
+import space.kscience.controls.api.PropertyDescriptor
+import space.kscience.controls.api.metaDescriptor
+import space.kscience.dataforge.meta.Meta
+import space.kscience.dataforge.meta.ValueType
+import space.kscience.dataforge.meta.transformations.MetaConverter
+import kotlin.properties.PropertyDelegateProvider
+import kotlin.properties.ReadOnlyProperty
+
+//read only delegates
+
+public fun <D : Device> DeviceSpec<D>.booleanProperty(
+    descriptorBuilder: PropertyDescriptor.() -> Unit = {},
+    name: String? = null,
+    read: suspend D.() -> Boolean?
+): PropertyDelegateProvider<DeviceSpec<D>, ReadOnlyProperty<DeviceSpec<D>, DevicePropertySpec<D, Boolean>>> = property(
+    MetaConverter.boolean,
+    {
+        metaDescriptor {
+            type(ValueType.BOOLEAN)
+        }
+        descriptorBuilder()
+    },
+    name,
+    read
+)
+
+private inline fun numberDescriptor(
+    crossinline descriptorBuilder: PropertyDescriptor.() -> Unit = {}
+): PropertyDescriptor.() -> Unit = {
+    metaDescriptor {
+        type(ValueType.NUMBER)
+    }
+    descriptorBuilder()
+}
+
+public fun <D : Device> DeviceSpec<D>.numberProperty(
+    name: String? = null,
+    descriptorBuilder: PropertyDescriptor.() -> Unit = {},
+    read: suspend D.() -> Number?
+): PropertyDelegateProvider<DeviceSpec<D>, ReadOnlyProperty<DeviceSpec<D>, DevicePropertySpec<D, Number>>> = property(
+    MetaConverter.number,
+    numberDescriptor(descriptorBuilder),
+    name,
+    read
+)
+
+public fun <D : Device> DeviceSpec<D>.doubleProperty(
+    descriptorBuilder: PropertyDescriptor.() -> Unit = {},
+    name: String? = null,
+    read: suspend D.() -> Double?
+): PropertyDelegateProvider<DeviceSpec<D>, ReadOnlyProperty<DeviceSpec<D>, DevicePropertySpec<D, Double>>> = property(
+    MetaConverter.double,
+    numberDescriptor(descriptorBuilder),
+    name,
+    read
+)
+
+public fun <D : Device> DeviceSpec<D>.stringProperty(
+    descriptorBuilder: PropertyDescriptor.() -> Unit = {},
+    name: String? = null,
+    read: suspend D.() -> String?
+): PropertyDelegateProvider<DeviceSpec<D>, ReadOnlyProperty<DeviceSpec<D>, DevicePropertySpec<D, String>>> = property(
+    MetaConverter.string,
+    {
+        metaDescriptor {
+            type(ValueType.STRING)
+        }
+        descriptorBuilder()
+    },
+    name,
+    read
+)
+
+public fun <D : Device> DeviceSpec<D>.metaProperty(
+    descriptorBuilder: PropertyDescriptor.() -> Unit = {},
+    name: String? = null,
+    read: suspend D.() -> Meta?
+): PropertyDelegateProvider<DeviceSpec<D>, ReadOnlyProperty<DeviceSpec<D>, DevicePropertySpec<D, Meta>>> = property(
+    MetaConverter.meta,
+    {
+        metaDescriptor {
+            type(ValueType.STRING)
+        }
+        descriptorBuilder()
+    },
+    name,
+    read
+)
+
+//read-write delegates
+
+public fun <D : Device> DeviceSpec<D>.booleanProperty(
+    descriptorBuilder: PropertyDescriptor.() -> Unit = {},
+    name: String? = null,
+    read: suspend D.() -> Boolean?,
+    write: suspend D.(Boolean) -> Unit
+): PropertyDelegateProvider<DeviceSpec<D>, ReadOnlyProperty<DeviceSpec<D>, WritableDevicePropertySpec<D, Boolean>>> =
+    mutableProperty(
+        MetaConverter.boolean,
+        {
+            metaDescriptor {
+                type(ValueType.BOOLEAN)
+            }
+            descriptorBuilder()
+        },
+        name,
+        read,
+        write
+    )
+
+
+public fun <D : Device> DeviceSpec<D>.numberProperty(
+    descriptorBuilder: PropertyDescriptor.() -> Unit = {},
+    name: String? = null,
+    read: suspend D.() -> Number,
+    write: suspend D.(Number) -> Unit
+): PropertyDelegateProvider<DeviceSpec<D>, ReadOnlyProperty<DeviceSpec<D>, WritableDevicePropertySpec<D, Number>>> =
+    mutableProperty(MetaConverter.number, numberDescriptor(descriptorBuilder), name, read, write)
+
+public fun <D : Device> DeviceSpec<D>.doubleProperty(
+    descriptorBuilder: PropertyDescriptor.() -> Unit = {},
+    name: String? = null,
+    read: suspend D.() -> Double,
+    write: suspend D.(Double) -> Unit
+): PropertyDelegateProvider<DeviceSpec<D>, ReadOnlyProperty<DeviceSpec<D>, WritableDevicePropertySpec<D, Double>>> =
+    mutableProperty(MetaConverter.double, numberDescriptor(descriptorBuilder), name, read, write)
+
+public fun <D : Device> DeviceSpec<D>.stringProperty(
+    descriptorBuilder: PropertyDescriptor.() -> Unit = {},
+    name: String? = null,
+    read: suspend D.() -> String,
+    write: suspend D.(String) -> Unit
+): PropertyDelegateProvider<DeviceSpec<D>, ReadOnlyProperty<DeviceSpec<D>, WritableDevicePropertySpec<D, String>>> =
+    mutableProperty(MetaConverter.string, descriptorBuilder, name, read, write)
+
+public fun <D : Device> DeviceSpec<D>.metaProperty(
+    descriptorBuilder: PropertyDescriptor.() -> Unit = {},
+    name: String? = null,
+    read: suspend D.() -> Meta,
+    write: suspend D.(Meta) -> Unit
+): PropertyDelegateProvider<DeviceSpec<D>, ReadOnlyProperty<DeviceSpec<D>, WritableDevicePropertySpec<D, Meta>>> =
+    mutableProperty(MetaConverter.meta, descriptorBuilder, name, read, write)

controls-core/src/commonTest/kotlin/space/kscience/controls/api/MessageTest.kt

@@ -0,0 +1,18 @@
+package space.kscience.controls.api
+
+import kotlinx.serialization.decodeFromString
+import kotlinx.serialization.encodeToString
+import kotlinx.serialization.json.Json
+import space.kscience.controls.spec.asMeta
+import kotlin.test.Test
+import kotlin.test.assertEquals
+
+class MessageTest {
+    @Test
+    fun messageSerialization() {
+        val changedMessage = PropertyChangedMessage("test", 22.0.asMeta())
+        val json = Json.encodeToString(changedMessage)
+        val reconstructed: PropertyChangedMessage = Json.decodeFromString(json)
+        assertEquals(changedMessage.time, reconstructed.time)
+    }
+}

controls-core/src/jvmMain/kotlin/space/kscience/controls/ports/ChannelPort.kt

@@ -0,0 +1,133 @@
+package space.kscience.controls.ports
+
+import kotlinx.coroutines.*
+import space.kscience.dataforge.context.Context
+import space.kscience.dataforge.context.error
+import space.kscience.dataforge.context.info
+import space.kscience.dataforge.context.logger
+import space.kscience.dataforge.meta.*
+import java.net.InetSocketAddress
+import java.nio.ByteBuffer
+import java.nio.channels.ByteChannel
+import java.nio.channels.DatagramChannel
+import java.nio.channels.SocketChannel
+import kotlin.coroutines.CoroutineContext
+
+public fun ByteBuffer.toArray(limit: Int = limit()): ByteArray {
+    rewind()
+    val response = ByteArray(limit)
+    get(response)
+    rewind()
+    return response
+}
+
+/**
+ * A port based on nio [ByteChannel]
+ */
+public class ChannelPort(
+    context: Context,
+    coroutineContext: CoroutineContext = context.coroutineContext,
+    channelBuilder: suspend () -> ByteChannel,
+) : AbstractPort(context, coroutineContext), AutoCloseable {
+
+    private val futureChannel: Deferred<ByteChannel> = this.scope.async(Dispatchers.IO) {
+        channelBuilder()
+    }
+
+    /**
+     * A handler to await port connection
+     */
+    public val startJob: Job get() = futureChannel
+
+    private val listenerJob = this.scope.launch(Dispatchers.IO) {
+        val channel = futureChannel.await()
+        val buffer = ByteBuffer.allocate(1024)
+        while (isActive) {
+            try {
+                val num = channel.read(buffer)
+                if (num > 0) {
+                    receive(buffer.toArray(num))
+                }
+                if (num < 0) cancel("The input channel is exhausted")
+            } catch (ex: Exception) {
+                logger.error(ex) { "Channel read error" }
+                delay(1000)
+            }
+        }
+    }
+
+    override suspend fun write(data: ByteArray): Unit = withContext(Dispatchers.IO) {
+        futureChannel.await().write(ByteBuffer.wrap(data))
+    }
+
+    @OptIn(ExperimentalCoroutinesApi::class)
+    override fun close() {
+        listenerJob.cancel()
+        if (futureChannel.isCompleted) {
+            futureChannel.getCompleted().close()
+        } else {
+            futureChannel.cancel()
+        }
+        super.close()
+    }
+}
+
+/**
+ * A [PortFactory] for TCP connections
+ */
+public object TcpPort : PortFactory {
+
+    override val type: String = "tcp"
+
+    public fun open(
+        context: Context,
+        host: String,
+        port: Int,
+        coroutineContext: CoroutineContext = context.coroutineContext,
+    ): ChannelPort = ChannelPort(context, coroutineContext) {
+        SocketChannel.open(InetSocketAddress(host, port))
+    }
+
+    override fun build(context: Context, meta: Meta): ChannelPort {
+        val host = meta["host"].string ?: "localhost"
+        val port = meta["port"].int ?: error("Port value for TCP port is not defined in $meta")
+        return open(context, host, port)
+    }
+}
+
+
+/**
+ * A [PortFactory] for UDP connections
+ */
+public object UdpPort : PortFactory {
+
+    override val type: String = "udp"
+
+    /**
+     * Connect a datagram channel to a remote host/port. If [localPort] is provided, it is used to bind local port for receiving messages.
+     */
+    public fun open(
+        context: Context,
+        remoteHost: String,
+        remotePort: Int,
+        localPort: Int? = null,
+        localHost: String = "localhost",
+        coroutineContext: CoroutineContext = context.coroutineContext,
+    ): ChannelPort = ChannelPort(context, coroutineContext) {
+        DatagramChannel.open().apply {
+            //bind the channel to a local port to receive messages
+            localPort?.let { bind(InetSocketAddress(localHost, localPort)) }
+            //connect to remote port to send messages
+            connect(InetSocketAddress(remoteHost, remotePort))
+            context.logger.info { "Connected to UDP $remotePort on $remoteHost" }
+        }
+    }
+
+    override fun build(context: Context, meta: Meta): ChannelPort {
+        val remoteHost by meta.string { error("Remote host is not specified") }
+        val remotePort by meta.number { error("Remote port is not specified") }
+        val localHost: String? by meta.string()
+        val localPort: Int? by meta.int()
+        return open(context, remoteHost, remotePort.toInt(), localPort, localHost ?: "localhost")
+    }
+}

controls-core/src/jvmMain/kotlin/space/kscience/controls/ports/JvmPortsPlugin.kt

@@ -0,0 +1,35 @@
+package space.kscience.controls.ports
+
+import space.kscience.dataforge.context.AbstractPlugin
+import space.kscience.dataforge.context.Context
+import space.kscience.dataforge.context.PluginFactory
+import space.kscience.dataforge.context.PluginTag
+import space.kscience.dataforge.meta.Meta
+import space.kscience.dataforge.names.Name
+import space.kscience.dataforge.names.parseAsName
+
+/**
+ * A plugin for loading JVM nio-based ports
+ */
+public class JvmPortsPlugin : AbstractPlugin() {
+    public val ports: Ports by require(Ports)
+
+    override val tag: PluginTag get() = Companion.tag
+
+    override fun content(target: String): Map<Name, Any> = when(target){
+        PortFactory.TYPE -> mapOf(
+            TcpPort.type.parseAsName() to TcpPort,
+            UdpPort.type.parseAsName() to UdpPort
+        )
+        else -> emptyMap()
+    }
+
+    public companion object : PluginFactory<JvmPortsPlugin> {
+
+        override val tag: PluginTag = PluginTag("controls.ports.jvm", group = PluginTag.DATAFORGE_GROUP)
+
+        override fun build(context: Context, meta: Meta): JvmPortsPlugin = JvmPortsPlugin()
+
+    }
+
+}

controls-core/src/jvmTest/kotlin/space/kscience/controls/ports/PortIOTest.kt

@@ -1,4 +1,4 @@
-package hep.dataforge.control.ports
+package space.kscience.controls.ports
 
 import kotlinx.coroutines.flow.flowOf
 import kotlinx.coroutines.flow.map

controls-magix/README.md

@@ -0,0 +1,29 @@
+# Module controls-magix
+
+Magix service for binding controls devices (both as RPC client and server)
+
+## Features
+
+ - [controlsMagix](src/commonMain/kotlin/space/kscience/controls/client/controlsMagix.kt) : Connect a `DeviceManage` with one or many devices to the Magix endpoint
+ - [DeviceClient](src/commonMain/kotlin/space/kscience/controls/client/DeviceClient.kt) : A remote connector to Controls-kt device via Magix
+
+
+## Usage
+
+## Artifact:
+
+The Maven coordinates of this project are `space.kscience:controls-magix:0.2.0`.
+
+**Gradle Kotlin DSL:**
+```kotlin
+repositories {
+    maven("https://repo.kotlin.link")
+    //uncomment to access development builds
+    //maven("https://maven.pkg.jetbrains.space/spc/p/sci/dev")
+    mavenCentral()
+}
+
+dependencies {
+    implementation("space.kscience:controls-magix:0.2.0")
+}
+```

controls-magix/api/controls-magix.api

@@ -0,0 +1,199 @@
+public final class space/kscience/controls/client/ControlsMagixKt {
+	public static final fun getMagixFormat (Lspace/kscience/controls/manager/DeviceManager$Companion;)Lspace/kscience/magix/api/MagixFormat;
+	public static final fun launchMagixService (Lspace/kscience/controls/manager/DeviceManager;Lspace/kscience/magix/api/MagixEndpoint;Ljava/lang/String;)Lkotlinx/coroutines/Job;
+	public static synthetic fun launchMagixService$default (Lspace/kscience/controls/manager/DeviceManager;Lspace/kscience/magix/api/MagixEndpoint;Ljava/lang/String;ILjava/lang/Object;)Lkotlinx/coroutines/Job;
+}
+
+public final class space/kscience/controls/client/DeviceClient : space/kscience/controls/api/Device {
+	public fun <init> (Lspace/kscience/dataforge/context/Context;Lspace/kscience/dataforge/names/Name;Lkotlinx/coroutines/flow/Flow;Lkotlin/jvm/functions/Function2;)V
+	public fun execute (Ljava/lang/String;Lspace/kscience/dataforge/meta/Meta;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
+	public fun getActionDescriptors ()Ljava/util/Collection;
+	public fun getContext ()Lspace/kscience/dataforge/context/Context;
+	public fun getCoroutineContext ()Lkotlin/coroutines/CoroutineContext;
+	public fun getLifecycleState ()Lspace/kscience/controls/api/DeviceLifecycleState;
+	public fun getMessageFlow ()Lkotlinx/coroutines/flow/Flow;
+	public fun getProperty (Ljava/lang/String;)Lspace/kscience/dataforge/meta/Meta;
+	public fun getPropertyDescriptors ()Ljava/util/Collection;
+	public fun invalidate (Ljava/lang/String;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
+	public fun readProperty (Ljava/lang/String;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
+	public fun writeProperty (Ljava/lang/String;Lspace/kscience/dataforge/meta/Meta;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
+}
+
+public final class space/kscience/controls/client/DeviceClientKt {
+	public static final fun remoteDevice (Lspace/kscience/magix/api/MagixEndpoint;Lspace/kscience/dataforge/context/Context;Ljava/lang/String;Lspace/kscience/dataforge/names/Name;)Lspace/kscience/controls/client/DeviceClient;
+}
+
+public final class space/kscience/controls/client/DoocsAction : java/lang/Enum {
+	public static final field Companion Lspace/kscience/controls/client/DoocsAction$Companion;
+	public static final field get Lspace/kscience/controls/client/DoocsAction;
+	public static final field names Lspace/kscience/controls/client/DoocsAction;
+	public static final field set Lspace/kscience/controls/client/DoocsAction;
+	public static fun getEntries ()Lkotlin/enums/EnumEntries;
+	public static fun valueOf (Ljava/lang/String;)Lspace/kscience/controls/client/DoocsAction;
+	public static fun values ()[Lspace/kscience/controls/client/DoocsAction;
+}
+
+public final class space/kscience/controls/client/DoocsAction$Companion {
+	public final fun serializer ()Lkotlinx/serialization/KSerializer;
+}
+
+public final class space/kscience/controls/client/DoocsPayload {
+	public static final field Companion Lspace/kscience/controls/client/DoocsPayload$Companion;
+	public synthetic fun <init> (ILspace/kscience/controls/client/DoocsAction;Ljava/lang/String;Lspace/kscience/controls/client/EqData;Lkotlinx/serialization/internal/SerializationConstructorMarker;)V
+	public fun <init> (Lspace/kscience/controls/client/DoocsAction;Ljava/lang/String;Lspace/kscience/controls/client/EqData;)V
+	public final fun component1 ()Lspace/kscience/controls/client/DoocsAction;
+	public final fun component2 ()Ljava/lang/String;
+	public final fun component3 ()Lspace/kscience/controls/client/EqData;
+	public final fun copy (Lspace/kscience/controls/client/DoocsAction;Ljava/lang/String;Lspace/kscience/controls/client/EqData;)Lspace/kscience/controls/client/DoocsPayload;
+	public static synthetic fun copy$default (Lspace/kscience/controls/client/DoocsPayload;Lspace/kscience/controls/client/DoocsAction;Ljava/lang/String;Lspace/kscience/controls/client/EqData;ILjava/lang/Object;)Lspace/kscience/controls/client/DoocsPayload;
+	public fun equals (Ljava/lang/Object;)Z
+	public final fun getAction ()Lspace/kscience/controls/client/DoocsAction;
+	public final fun getAddress ()Ljava/lang/String;
+	public final fun getData ()Lspace/kscience/controls/client/EqData;
+	public fun hashCode ()I
+	public fun toString ()Ljava/lang/String;
+	public static final synthetic fun write$Self (Lspace/kscience/controls/client/DoocsPayload;Lkotlinx/serialization/encoding/CompositeEncoder;Lkotlinx/serialization/descriptors/SerialDescriptor;)V
+}
+
+public final class space/kscience/controls/client/DoocsPayload$$serializer : kotlinx/serialization/internal/GeneratedSerializer {
+	public static final field INSTANCE Lspace/kscience/controls/client/DoocsPayload$$serializer;
+	public fun childSerializers ()[Lkotlinx/serialization/KSerializer;
+	public synthetic fun deserialize (Lkotlinx/serialization/encoding/Decoder;)Ljava/lang/Object;
+	public fun deserialize (Lkotlinx/serialization/encoding/Decoder;)Lspace/kscience/controls/client/DoocsPayload;
+	public fun getDescriptor ()Lkotlinx/serialization/descriptors/SerialDescriptor;
+	public synthetic fun serialize (Lkotlinx/serialization/encoding/Encoder;Ljava/lang/Object;)V
+	public fun serialize (Lkotlinx/serialization/encoding/Encoder;Lspace/kscience/controls/client/DoocsPayload;)V
+	public fun typeParametersSerializers ()[Lkotlinx/serialization/KSerializer;
+}
+
+public final class space/kscience/controls/client/DoocsPayload$Companion {
+	public final fun serializer ()Lkotlinx/serialization/KSerializer;
+}
+
+public final class space/kscience/controls/client/EqData {
+	public static final field Companion Lspace/kscience/controls/client/EqData$Companion;
+	public synthetic fun <init> (IILjava/lang/String;Lspace/kscience/dataforge/meta/Meta;Ljava/lang/Integer;Ljava/lang/Integer;Ljava/lang/Long;Ljava/lang/String;Lkotlinx/serialization/internal/SerializationConstructorMarker;)V
+	public fun <init> (ILjava/lang/String;Lspace/kscience/dataforge/meta/Meta;Ljava/lang/Integer;Ljava/lang/Integer;Ljava/lang/Long;Ljava/lang/String;)V
+	public synthetic fun <init> (ILjava/lang/String;Lspace/kscience/dataforge/meta/Meta;Ljava/lang/Integer;Ljava/lang/Integer;Ljava/lang/Long;Ljava/lang/String;ILkotlin/jvm/internal/DefaultConstructorMarker;)V
+	public final fun component1 ()I
+	public final fun component2 ()Ljava/lang/String;
+	public final fun component3 ()Lspace/kscience/dataforge/meta/Meta;
+	public final fun component4 ()Ljava/lang/Integer;
+	public final fun component5 ()Ljava/lang/Integer;
+	public final fun component6 ()Ljava/lang/Long;
+	public final fun component7 ()Ljava/lang/String;
+	public final fun copy (ILjava/lang/String;Lspace/kscience/dataforge/meta/Meta;Ljava/lang/Integer;Ljava/lang/Integer;Ljava/lang/Long;Ljava/lang/String;)Lspace/kscience/controls/client/EqData;
+	public static synthetic fun copy$default (Lspace/kscience/controls/client/EqData;ILjava/lang/String;Lspace/kscience/dataforge/meta/Meta;Ljava/lang/Integer;Ljava/lang/Integer;Ljava/lang/Long;Ljava/lang/String;ILjava/lang/Object;)Lspace/kscience/controls/client/EqData;
+	public fun equals (Ljava/lang/Object;)Z
+	public final fun getError ()Ljava/lang/Integer;
+	public final fun getEventId ()Ljava/lang/Integer;
+	public final fun getMessage ()Ljava/lang/String;
+	public final fun getTime ()Ljava/lang/Long;
+	public final fun getType ()Ljava/lang/String;
+	public final fun getTypeId ()I
+	public final fun getValue ()Lspace/kscience/dataforge/meta/Meta;
+	public fun hashCode ()I
+	public fun toString ()Ljava/lang/String;
+	public static final synthetic fun write$Self (Lspace/kscience/controls/client/EqData;Lkotlinx/serialization/encoding/CompositeEncoder;Lkotlinx/serialization/descriptors/SerialDescriptor;)V
+}
+
+public final class space/kscience/controls/client/EqData$$serializer : kotlinx/serialization/internal/GeneratedSerializer {
+	public static final field INSTANCE Lspace/kscience/controls/client/EqData$$serializer;
+	public fun childSerializers ()[Lkotlinx/serialization/KSerializer;
+	public synthetic fun deserialize (Lkotlinx/serialization/encoding/Decoder;)Ljava/lang/Object;
+	public fun deserialize (Lkotlinx/serialization/encoding/Decoder;)Lspace/kscience/controls/client/EqData;
+	public fun getDescriptor ()Lkotlinx/serialization/descriptors/SerialDescriptor;
+	public synthetic fun serialize (Lkotlinx/serialization/encoding/Encoder;Ljava/lang/Object;)V
+	public fun serialize (Lkotlinx/serialization/encoding/Encoder;Lspace/kscience/controls/client/EqData;)V
+	public fun typeParametersSerializers ()[Lkotlinx/serialization/KSerializer;
+}
+
+public final class space/kscience/controls/client/EqData$Companion {
+	public final fun serializer ()Lkotlinx/serialization/KSerializer;
+}
+
+public final class space/kscience/controls/client/TangoAction : java/lang/Enum {
+	public static final field Companion Lspace/kscience/controls/client/TangoAction$Companion;
+	public static final field exec Lspace/kscience/controls/client/TangoAction;
+	public static final field pipe Lspace/kscience/controls/client/TangoAction;
+	public static final field read Lspace/kscience/controls/client/TangoAction;
+	public static final field write Lspace/kscience/controls/client/TangoAction;
+	public static fun getEntries ()Lkotlin/enums/EnumEntries;
+	public static fun valueOf (Ljava/lang/String;)Lspace/kscience/controls/client/TangoAction;
+	public static fun values ()[Lspace/kscience/controls/client/TangoAction;
+}
+
+public final class space/kscience/controls/client/TangoAction$Companion {
+	public final fun serializer ()Lkotlinx/serialization/KSerializer;
+}
+
+public final class space/kscience/controls/client/TangoMagixKt {
+	public static final field TANGO_MAGIX_FORMAT Ljava/lang/String;
+	public static final fun launchTangoMagix (Lspace/kscience/controls/manager/DeviceManager;Lspace/kscience/magix/api/MagixEndpoint;Ljava/lang/String;)Lkotlinx/coroutines/Job;
+	public static synthetic fun launchTangoMagix$default (Lspace/kscience/controls/manager/DeviceManager;Lspace/kscience/magix/api/MagixEndpoint;Ljava/lang/String;ILjava/lang/Object;)Lkotlinx/coroutines/Job;
+}
+
+public final class space/kscience/controls/client/TangoPayload {
+	public static final field Companion Lspace/kscience/controls/client/TangoPayload$Companion;
+	public synthetic fun <init> (ILspace/kscience/controls/client/TangoAction;ILjava/lang/String;Ljava/lang/String;Ljava/lang/String;Lspace/kscience/dataforge/meta/Meta;Lspace/kscience/controls/client/TangoQuality;Lspace/kscience/dataforge/meta/Meta;Lspace/kscience/dataforge/meta/Meta;Lspace/kscience/dataforge/meta/Meta;Ljava/util/List;Lkotlinx/serialization/internal/SerializationConstructorMarker;)V
+	public fun <init> (Lspace/kscience/controls/client/TangoAction;ILjava/lang/String;Ljava/lang/String;Ljava/lang/String;Lspace/kscience/dataforge/meta/Meta;Lspace/kscience/controls/client/TangoQuality;Lspace/kscience/dataforge/meta/Meta;Lspace/kscience/dataforge/meta/Meta;Lspace/kscience/dataforge/meta/Meta;Ljava/util/List;)V
+	public synthetic fun <init> (Lspace/kscience/controls/client/TangoAction;ILjava/lang/String;Ljava/lang/String;Ljava/lang/String;Lspace/kscience/dataforge/meta/Meta;Lspace/kscience/controls/client/TangoQuality;Lspace/kscience/dataforge/meta/Meta;Lspace/kscience/dataforge/meta/Meta;Lspace/kscience/dataforge/meta/Meta;Ljava/util/List;ILkotlin/jvm/internal/DefaultConstructorMarker;)V
+	public final fun component1 ()Lspace/kscience/controls/client/TangoAction;
+	public final fun component10 ()Lspace/kscience/dataforge/meta/Meta;
+	public final fun component11 ()Ljava/util/List;
+	public final fun component2 ()I
+	public final fun component3 ()Ljava/lang/String;
+	public final fun component4 ()Ljava/lang/String;
+	public final fun component5 ()Ljava/lang/String;
+	public final fun component6 ()Lspace/kscience/dataforge/meta/Meta;
+	public final fun component7 ()Lspace/kscience/controls/client/TangoQuality;
+	public final fun component8 ()Lspace/kscience/dataforge/meta/Meta;
+	public final fun component9 ()Lspace/kscience/dataforge/meta/Meta;
+	public final fun copy (Lspace/kscience/controls/client/TangoAction;ILjava/lang/String;Ljava/lang/String;Ljava/lang/String;Lspace/kscience/dataforge/meta/Meta;Lspace/kscience/controls/client/TangoQuality;Lspace/kscience/dataforge/meta/Meta;Lspace/kscience/dataforge/meta/Meta;Lspace/kscience/dataforge/meta/Meta;Ljava/util/List;)Lspace/kscience/controls/client/TangoPayload;
+	public static synthetic fun copy$default (Lspace/kscience/controls/client/TangoPayload;Lspace/kscience/controls/client/TangoAction;ILjava/lang/String;Ljava/lang/String;Ljava/lang/String;Lspace/kscience/dataforge/meta/Meta;Lspace/kscience/controls/client/TangoQuality;Lspace/kscience/dataforge/meta/Meta;Lspace/kscience/dataforge/meta/Meta;Lspace/kscience/dataforge/meta/Meta;Ljava/util/List;ILjava/lang/Object;)Lspace/kscience/controls/client/TangoPayload;
+	public fun equals (Ljava/lang/Object;)Z
+	public final fun getAction ()Lspace/kscience/controls/client/TangoAction;
+	public final fun getArgin ()Lspace/kscience/dataforge/meta/Meta;
+	public final fun getArgout ()Lspace/kscience/dataforge/meta/Meta;
+	public final fun getData ()Lspace/kscience/dataforge/meta/Meta;
+	public final fun getDevice ()Ljava/lang/String;
+	public final fun getErrors ()Ljava/util/List;
+	public final fun getHost ()Ljava/lang/String;
+	public final fun getName ()Ljava/lang/String;
+	public final fun getQuality ()Lspace/kscience/controls/client/TangoQuality;
+	public final fun getTimestamp ()I
+	public final fun getValue ()Lspace/kscience/dataforge/meta/Meta;
+	public fun hashCode ()I
+	public fun toString ()Ljava/lang/String;
+	public static final synthetic fun write$Self (Lspace/kscience/controls/client/TangoPayload;Lkotlinx/serialization/encoding/CompositeEncoder;Lkotlinx/serialization/descriptors/SerialDescriptor;)V
+}
+
+public final class space/kscience/controls/client/TangoPayload$$serializer : kotlinx/serialization/internal/GeneratedSerializer {
+	public static final field INSTANCE Lspace/kscience/controls/client/TangoPayload$$serializer;
+	public fun childSerializers ()[Lkotlinx/serialization/KSerializer;
+	public synthetic fun deserialize (Lkotlinx/serialization/encoding/Decoder;)Ljava/lang/Object;
+	public fun deserialize (Lkotlinx/serialization/encoding/Decoder;)Lspace/kscience/controls/client/TangoPayload;
+	public fun getDescriptor ()Lkotlinx/serialization/descriptors/SerialDescriptor;
+	public synthetic fun serialize (Lkotlinx/serialization/encoding/Encoder;Ljava/lang/Object;)V
+	public fun serialize (Lkotlinx/serialization/encoding/Encoder;Lspace/kscience/controls/client/TangoPayload;)V
+	public fun typeParametersSerializers ()[Lkotlinx/serialization/KSerializer;
+}
+
+public final class space/kscience/controls/client/TangoPayload$Companion {
+	public final fun serializer ()Lkotlinx/serialization/KSerializer;
+}
+
+public final class space/kscience/controls/client/TangoQuality : java/lang/Enum {
+	public static final field ALARM Lspace/kscience/controls/client/TangoQuality;
+	public static final field Companion Lspace/kscience/controls/client/TangoQuality$Companion;
+	public static final field VALID Lspace/kscience/controls/client/TangoQuality;
+	public static final field WARNING Lspace/kscience/controls/client/TangoQuality;
+	public static fun getEntries ()Lkotlin/enums/EnumEntries;
+	public static fun valueOf (Ljava/lang/String;)Lspace/kscience/controls/client/TangoQuality;
+	public static fun values ()[Lspace/kscience/controls/client/TangoQuality;
+}
+
+public final class space/kscience/controls/client/TangoQuality$Companion {
+	public final fun serializer ()Lkotlinx/serialization/KSerializer;
+}
+

controls-magix/build.gradle.kts

@@ -0,0 +1,39 @@
+import space.kscience.gradle.Maturity
+
+plugins {
+    id("space.kscience.gradle.mpp")
+    `maven-publish`
+}
+
+description = """
+    Magix service for binding controls devices (both as RPC client and server)
+""".trimIndent()
+
+kscience {
+    jvm()
+    js()
+    useSerialization {
+        json()
+    }
+    dependencies {
+        api(projects.magix.magixApi)
+        api(projects.controlsCore)
+        api("com.benasher44:uuid:0.8.0")
+    }
+}
+
+readme {
+    maturity = Maturity.EXPERIMENTAL
+
+    feature("controlsMagix", ref = "src/commonMain/kotlin/space/kscience/controls/client/controlsMagix.kt"){
+        """
+            Connect a `DeviceManage` with one or many devices to the Magix endpoint
+        """.trimIndent()
+    }
+
+    feature("DeviceClient", ref = "src/commonMain/kotlin/space/kscience/controls/client/DeviceClient.kt"){
+        """
+            A remote connector to Controls-kt device via Magix
+        """.trimIndent()
+    }
+}

controls-magix/src/commonMain/kotlin/space/kscience/controls/client/DeviceClient.kt

@@ -0,0 +1,117 @@
+package space.kscience.controls.client
+
+import com.benasher44.uuid.uuid4
+import kotlinx.coroutines.flow.*
+import kotlinx.coroutines.newCoroutineContext
+import kotlinx.coroutines.sync.Mutex
+import kotlinx.coroutines.sync.withLock
+import space.kscience.controls.api.*
+import space.kscience.controls.manager.DeviceManager
+import space.kscience.dataforge.context.Context
+import space.kscience.dataforge.meta.Meta
+import space.kscience.dataforge.misc.DFExperimental
+import space.kscience.dataforge.names.Name
+import space.kscience.magix.api.MagixEndpoint
+import space.kscience.magix.api.send
+import space.kscience.magix.api.subscribe
+import kotlin.coroutines.CoroutineContext
+
+private fun stringUID() = uuid4().leastSignificantBits.toString(16)
+
+/**
+ * A remote accessible device that relies on connection via Magix
+ */
+public class DeviceClient(
+    override val context: Context,
+    private val deviceName: Name,
+    incomingFlow: Flow<DeviceMessage>,
+    private val send: suspend (DeviceMessage) -> Unit,
+) : Device {
+
+    @OptIn(kotlinx.coroutines.ExperimentalCoroutinesApi::class)
+    override val coroutineContext: CoroutineContext = newCoroutineContext(context.coroutineContext)
+
+    private val mutex = Mutex()
+
+    private val propertyCache = HashMap<String, Meta>()
+
+    override var propertyDescriptors: Collection<PropertyDescriptor> = emptyList()
+        private set
+
+    override var actionDescriptors: Collection<ActionDescriptor> = emptyList()
+        private set
+
+    private val flowInternal = incomingFlow.filter {
+        it.sourceDevice == deviceName
+    }.shareIn(this, started = SharingStarted.Eagerly).also {
+        it.onEach { message ->
+            when (message) {
+                is PropertyChangedMessage -> mutex.withLock {
+                    propertyCache[message.property] = message.value
+                }
+
+                is DescriptionMessage -> mutex.withLock {
+                    propertyDescriptors = message.properties
+                    actionDescriptors = message.actions
+                }
+
+                else -> {
+                    //ignore
+                }
+            }
+        }.launchIn(this)
+    }
+
+    override val messageFlow: Flow<DeviceMessage> get() = flowInternal
+
+
+    override suspend fun readProperty(propertyName: String): Meta {
+        send(
+            PropertyGetMessage(propertyName, targetDevice = deviceName)
+        )
+        return flowInternal.filterIsInstance<PropertyChangedMessage>().first {
+            it.property == propertyName
+        }.value
+    }
+
+    override fun getProperty(propertyName: String): Meta? = propertyCache[propertyName]
+
+    override suspend fun invalidate(propertyName: String) {
+        mutex.withLock {
+            propertyCache.remove(propertyName)
+        }
+    }
+
+    override suspend fun writeProperty(propertyName: String, value: Meta) {
+        send(
+            PropertySetMessage(propertyName, value, targetDevice = deviceName)
+        )
+    }
+
+    override suspend fun execute(actionName: String, argument: Meta?): Meta? {
+        val id = stringUID()
+        send(
+            ActionExecuteMessage(actionName, argument, id, targetDevice = deviceName)
+        )
+        return flowInternal.filterIsInstance<ActionResultMessage>().first {
+            it.action == actionName && it.requestId == id
+        }.result
+    }
+
+    @DFExperimental
+    override val lifecycleState: DeviceLifecycleState = DeviceLifecycleState.OPEN
+}
+
+/**
+ * Connect to a remote device via this endpoint.
+ *
+ * @param context a [Context] to run device in
+ * @param endpointName the name of endpoint in Magix to connect to
+ * @param deviceName the name of device within endpoint
+ */
+public fun MagixEndpoint.remoteDevice(context: Context, endpointName: String, deviceName: Name): DeviceClient {
+    val subscription = subscribe(DeviceManager.magixFormat, originFilter = listOf(endpointName)).map { it.second }
+    return DeviceClient(context, deviceName, subscription) {
+        send(DeviceManager.magixFormat, it, endpointName, id = stringUID())
+    }
+}

controls-magix/src/commonMain/kotlin/space/kscience/controls/client/controlsMagix.kt

@@ -0,0 +1,68 @@
+package space.kscience.controls.client
+
+import kotlinx.coroutines.Job
+import kotlinx.coroutines.flow.catch
+import kotlinx.coroutines.flow.launchIn
+import kotlinx.coroutines.flow.onEach
+import kotlinx.coroutines.launch
+import space.kscience.controls.api.DeviceMessage
+import space.kscience.controls.manager.DeviceManager
+import space.kscience.controls.manager.hubMessageFlow
+import space.kscience.controls.manager.respondHubMessage
+import space.kscience.dataforge.context.error
+import space.kscience.dataforge.context.logger
+import space.kscience.magix.api.*
+
+
+internal val controlsMagixFormat: MagixFormat<DeviceMessage> = MagixFormat(
+    DeviceMessage.serializer(),
+    setOf("controls-kt")
+)
+
+/**
+ * A magix message format to work with Controls-kt data
+ */
+public val DeviceManager.Companion.magixFormat: MagixFormat<DeviceMessage> get() = controlsMagixFormat
+
+internal fun generateId(request: MagixMessage): String = if (request.id != null) {
+    "${request.id}.response"
+} else {
+    "controls[${request.payload.hashCode().toString(16)}"
+}
+
+/**
+ * Communicate with server in [Magix format](https://github.com/waltz-controls/rfc/tree/master/1)
+ */
+public fun DeviceManager.launchMagixService(
+    endpoint: MagixEndpoint,
+    endpointID: String = controlsMagixFormat.defaultFormat,
+): Job = context.launch {
+    endpoint.subscribe(controlsMagixFormat, targetFilter = listOf(endpointID)).onEach { (request, payload) ->
+        val responsePayload = respondHubMessage(payload)
+        if (responsePayload != null) {
+            endpoint.send(
+                format = controlsMagixFormat,
+                payload = responsePayload,
+                source = endpointID,
+                target = request.sourceEndpoint,
+                id = generateId(request),
+                parentId = request.id
+            )
+        }
+    }.catch { error ->
+        logger.error(error) { "Error while responding to message: ${error.message}" }
+    }.launchIn(this)
+
+    hubMessageFlow(this).onEach { payload ->
+        endpoint.send(
+            format = controlsMagixFormat,
+            payload = payload,
+            source = endpointID,
+            id = "df[${payload.hashCode()}]"
+        )
+    }.catch { error ->
+        logger.error(error) { "Error while sending a message: ${error.message}" }
+    }.launchIn(this)
+}
+
+

controls-magix/src/commonMain/kotlin/space/kscience/controls/client/doocsMagix.kt

@@ -0,0 +1,119 @@
+package space.kscience.controls.client
+
+import kotlinx.serialization.SerialName
+import kotlinx.serialization.Serializable
+import space.kscience.dataforge.meta.Meta
+
+
+/*
+  "action":"get|set",
+  "eq_address": "string",
+  "eq_data": {
+    "type_id": "int[required]",
+    "type": "string[optional]",
+    "value": "object|value",
+    "event_id": "int[optional]",
+    "error": "int[optional]",
+    "time": "long[optional]",
+    "message": "string[optional]"
+  }
+ */
+
+@Serializable
+public enum class DoocsAction {
+    get,
+    set,
+    names
+}
+
+@Serializable
+public data class EqData(
+    @SerialName("type_id")
+    val typeId: Int,
+    val type: String? = null,
+    val value: Meta? = null,
+    @SerialName("event_id")
+    val eventId: Int? = null,
+    val error: Int? = null,
+    val time: Long? = null,
+    val message: String? = null
+) {
+    public companion object {
+        internal const val DATA_NULL: Int = 0
+        internal const val DATA_INT: Int = 1
+        internal const val DATA_FLOAT: Int = 2
+        internal const val DATA_STRING: Int = 3
+        internal const val DATA_BOOL: Int = 4
+        internal const val DATA_STRING16: Int = 5
+        internal const val DATA_DOUBLE: Int = 6
+        internal const val DATA_TEXT: Int = 7
+        internal const val DATA_TDS: Int = 12
+        internal const val DATA_XY: Int = 13
+        internal const val DATA_IIII: Int = 14
+        internal const val DATA_IFFF: Int = 15
+        internal const val DATA_USTR: Int = 16
+        internal const val DATA_TTII: Int = 18
+        internal const val DATA_SPECTRUM: Int = 19
+        internal const val DATA_XML: Int = 20
+        internal const val DATA_XYZS: Int = 21
+        internal const val DATA_IMAGE: Int = 22
+        internal const val DATA_GSPECTRUM: Int = 24
+        internal const val DATA_SHORT: Int = 25
+        internal const val DATA_LONG: Int = 26
+        internal const val DATA_USHORT: Int = 27
+        internal const val DATA_UINT: Int = 28
+        internal const val DATA_ULONG: Int = 29
+
+
+        internal const val DATA_A_FLOAT: Int = 100
+        internal const val DATA_A_TDS: Int = 101
+        internal const val DATA_A_XY: Int = 102
+        internal const val DATA_A_USTR: Int = 103
+        internal const val DATA_A_INT: Int = 105
+        internal const val DATA_A_BYTE: Int = 106
+        internal const val DATA_A_XYZS: Int = 108
+        internal const val DATA_MDA_FLOAT: Int = 109
+        internal const val DATA_A_DOUBLE: Int = 110
+        internal const val DATA_A_BOOL: Int = 111
+        internal const val DATA_A_STRING: Int = 112
+        internal const val DATA_A_SHORT: Int = 113
+        internal const val DATA_A_LONG: Int = 114
+        internal const val DATA_MDA_DOUBLE: Int = 115
+        internal const val DATA_A_USHORT: Int = 116
+        internal const val DATA_A_UINT: Int = 117
+        internal const val DATA_A_ULONG: Int = 118
+
+        internal const val DATA_A_THUMBNAIL: Int = 120
+
+        internal const val DATA_A_TS_BOOL: Int = 1000
+        internal const val DATA_A_TS_INT: Int = 1001
+        internal const val DATA_A_TS_FLOAT: Int = 1002
+        internal const val DATA_A_TS_DOUBLE: Int = 1003
+        internal const val DATA_A_TS_LONG: Int = 1004
+        internal const val DATA_A_TS_STRING: Int = 1005
+        internal const val DATA_A_TS_USTR: Int = 1006
+        internal const val DATA_A_TS_XML: Int = 1007
+        internal const val DATA_A_TS_XY: Int = 1008
+        internal const val DATA_A_TS_IIII: Int = 1009
+        internal const val DATA_A_TS_IFFF: Int = 1010
+        internal const val DATA_A_TS_SPECTRUM: Int = 1013
+        internal const val DATA_A_TS_XYZS: Int = 1014
+        internal const val DATA_A_TS_GSPECTRUM: Int = 1015
+
+        internal const val DATA_KEYVAL: Int = 1016
+
+        internal const val DATA_A_TS_SHORT: Int = 1017
+        internal const val DATA_A_TS_USHORT: Int = 1018
+        internal const val DATA_A_TS_UINT: Int = 1019
+        internal const val DATA_A_TS_ULONG: Int = 1020
+    }
+}
+
+@Serializable
+public data class DoocsPayload(
+    val action: DoocsAction,
+    @SerialName("eq_address")
+    val address: String,
+    @SerialName("eq_data")
+    val data: EqData?
+)

controls-magix/src/commonMain/kotlin/space/kscience/controls/client/tangoMagix.kt

@@ -0,0 +1,152 @@
+package space.kscience.controls.client
+
+import kotlinx.coroutines.Job
+import kotlinx.coroutines.flow.launchIn
+import kotlinx.coroutines.flow.onEach
+import kotlinx.coroutines.launch
+import kotlinx.serialization.Serializable
+import space.kscience.controls.api.get
+import space.kscience.controls.api.getOrReadProperty
+import space.kscience.controls.manager.DeviceManager
+import space.kscience.dataforge.context.error
+import space.kscience.dataforge.context.logger
+import space.kscience.dataforge.meta.Meta
+import space.kscience.magix.api.*
+
+public const val TANGO_MAGIX_FORMAT: String = "tango"
+
+/*
+  See https://github.com/waltz-controls/rfc/tree/master/4 for details
+
+  "action":"read|write|exec|pipe",
+  "timestamp": "int",
+  "host":"tango_host",
+  "device":"device name",
+  "name":"attribute, command or pipe's name",
+  "[value]":"attribute's value",
+  "[quality]":"VALID|WARNING|ALARM",
+  "[argin]":"command argin",
+  "[argout]":"command argout",
+  "[data]":"pipe's data",
+  "[errors]":[]
+ */
+
+@Serializable
+public enum class TangoAction {
+    read,
+    write,
+    exec,
+    pipe
+}
+
+@Serializable
+public enum class TangoQuality {
+    VALID,
+    WARNING,
+    ALARM
+}
+
+@Serializable
+public data class TangoPayload(
+    val action: TangoAction,
+    val timestamp: Int,
+    val host: String,
+    val device: String,
+    val name: String,
+    val value: Meta? = null,
+    val quality: TangoQuality = TangoQuality.VALID,
+    val argin: Meta? = null,
+    val argout: Meta? = null,
+    val data: Meta? = null,
+    val errors: List<String>? = null,
+)
+
+internal val tangoMagixFormat = MagixFormat(
+    TangoPayload.serializer(),
+    setOf("tango")
+)
+
+/**
+ * Controls-kt device binding for Tango-flavored magix loop
+ */
+public fun DeviceManager.launchTangoMagix(
+    endpoint: MagixEndpoint,
+    endpointID: String = TANGO_MAGIX_FORMAT,
+): Job {
+
+    suspend fun respond(request: MagixMessage, payload: TangoPayload, payloadBuilder: (TangoPayload) -> TangoPayload) {
+        endpoint.send(
+            tangoMagixFormat,
+            payload = payloadBuilder(payload),
+            source = endpointID,
+            id = generateId(request),
+            parentId = request.id
+        )
+    }
+
+
+    return context.launch {
+        endpoint.subscribe(tangoMagixFormat).onEach { (request, payload) ->
+            try {
+                val device = get(payload.device)
+                when (payload.action) {
+                    TangoAction.read -> {
+                        val value = device.getOrReadProperty(payload.name)
+                        respond(request, payload) { requestPayload ->
+                            requestPayload.copy(
+                                value = value,
+                                quality = TangoQuality.VALID
+                            )
+                        }
+                    }
+                    TangoAction.write -> {
+                        payload.value?.let { value ->
+                            device.writeProperty(payload.name, value)
+                        }
+                        //wait for value to be written and return final state
+                        val value = device.getOrReadProperty(payload.name)
+                        respond(request, payload) { requestPayload ->
+                            requestPayload.copy(
+                                value = value,
+                                quality = TangoQuality.VALID
+                            )
+                        }
+                    }
+                    TangoAction.exec -> {
+                        val result = device.execute(payload.name, payload.argin)
+                        respond(request, payload) { requestPayload ->
+                            requestPayload.copy(
+                                argout = result,
+                                quality = TangoQuality.VALID
+                            )
+                        }
+                    }
+                    TangoAction.pipe -> TODO("Pipe not implemented")
+                }
+            } catch (ex: Exception) {
+                logger.error(ex) { "Error while responding to message" }
+                endpoint.send(
+                    tangoMagixFormat,
+                    payload = payload.copy(quality = TangoQuality.WARNING),
+                    source = endpointID,
+                    id = generateId(request),
+                    parentId = request.id
+                )
+            }
+        }.launchIn(this)
+
+//TODO implement subscriptions?
+//    controller.messageOutput().onEach { payload ->
+//        endpoint.broadcast(
+//            MagixMessage(
+//                format = TANGO_MAGIX_FORMAT,
+//                id = "df[${payload.hashCode()}]",
+//                origin = endpointID,
+//                payload = payload
+//            )
+//        )
+//    }.catch { error ->
+//        logger.error(error) { "Error while sending a message" }
+//    }.launchIn(this)
+    }
+}

controls-modbus/README.md

@@ -0,0 +1,31 @@
+# Module controls-modbus
+
+A plugin for Controls-kt device server on top of modbus-rtu/modbus-tcp protocols
+
+## Features
+
+ - [modbusRegistryMap](src/main/kotlin/space/kscience/controls/modbus/ModbusRegistryMap.kt) : Type-safe modbus registry map. Allows to define both single-register and multi-register entries (using DataForge IO). 
+Automatically checks consistency.
+ - [modbusProcessImage](src/main/kotlin/space/kscience/controls/modbus/DeviceProcessImage.kt) : Binding of slave (server) modbus device to Controls-kt device
+ - [modbusDevice](src/main/kotlin/space/kscience/controls/modbus/ModbusDevice.kt) : A device with additional methods to work with modbus registers.
+
+
+## Usage
+
+## Artifact:
+
+The Maven coordinates of this project are `space.kscience:controls-modbus:0.2.0`.
+
+**Gradle Kotlin DSL:**
+```kotlin
+repositories {
+    maven("https://repo.kotlin.link")
+    //uncomment to access development builds
+    //maven("https://maven.pkg.jetbrains.space/spc/p/sci/dev")
+    mavenCentral()
+}
+
+dependencies {
+    implementation("space.kscience:controls-modbus:0.2.0")
+}
+```

controls-modbus/api/controls-modbus.api

@@ -0,0 +1,166 @@
+public final class space/kscience/controls/modbus/DeviceProcessImageBuilder {
+	public final fun bind (Lspace/kscience/controls/modbus/ModbusRegistryKey$Coil;Lkotlin/jvm/functions/Function2;)Lcom/ghgande/j2mod/modbus/procimg/ObservableDigitalOut;
+	public final fun bind (Lspace/kscience/controls/modbus/ModbusRegistryKey$Coil;Lspace/kscience/controls/spec/WritableDevicePropertySpec;)Lcom/ghgande/j2mod/modbus/procimg/ObservableDigitalOut;
+	public final fun bind (Lspace/kscience/controls/modbus/ModbusRegistryKey$DiscreteInput;Lkotlin/jvm/functions/Function2;)Lcom/ghgande/j2mod/modbus/procimg/DigitalIn;
+	public final fun bind (Lspace/kscience/controls/modbus/ModbusRegistryKey$DiscreteInput;Lspace/kscience/controls/spec/DevicePropertySpec;)Lcom/ghgande/j2mod/modbus/procimg/DigitalIn;
+	public final fun bind (Lspace/kscience/controls/modbus/ModbusRegistryKey$HoldingRange;Lspace/kscience/controls/spec/WritableDevicePropertySpec;)V
+	public final fun bind (Lspace/kscience/controls/modbus/ModbusRegistryKey$HoldingRegister;Lkotlin/jvm/functions/Function2;)Lcom/ghgande/j2mod/modbus/procimg/ObservableRegister;
+	public final fun bind (Lspace/kscience/controls/modbus/ModbusRegistryKey$HoldingRegister;Lspace/kscience/controls/spec/WritableDevicePropertySpec;)Lcom/ghgande/j2mod/modbus/procimg/ObservableRegister;
+	public final fun bind (Lspace/kscience/controls/modbus/ModbusRegistryKey$InputRange;Lspace/kscience/controls/spec/DevicePropertySpec;)V
+	public final fun bind (Lspace/kscience/controls/modbus/ModbusRegistryKey$InputRegister;Lkotlin/jvm/functions/Function2;)Lcom/ghgande/j2mod/modbus/procimg/SimpleInputRegister;
+	public final fun bind (Lspace/kscience/controls/modbus/ModbusRegistryKey$InputRegister;Lspace/kscience/controls/spec/DevicePropertySpec;)Lcom/ghgande/j2mod/modbus/procimg/SimpleInputRegister;
+	public static synthetic fun bind$default (Lspace/kscience/controls/modbus/DeviceProcessImageBuilder;Lspace/kscience/controls/modbus/ModbusRegistryKey$Coil;Lkotlin/jvm/functions/Function2;ILjava/lang/Object;)Lcom/ghgande/j2mod/modbus/procimg/ObservableDigitalOut;
+	public static synthetic fun bind$default (Lspace/kscience/controls/modbus/DeviceProcessImageBuilder;Lspace/kscience/controls/modbus/ModbusRegistryKey$DiscreteInput;Lkotlin/jvm/functions/Function2;ILjava/lang/Object;)Lcom/ghgande/j2mod/modbus/procimg/DigitalIn;
+	public static synthetic fun bind$default (Lspace/kscience/controls/modbus/DeviceProcessImageBuilder;Lspace/kscience/controls/modbus/ModbusRegistryKey$HoldingRegister;Lkotlin/jvm/functions/Function2;ILjava/lang/Object;)Lcom/ghgande/j2mod/modbus/procimg/ObservableRegister;
+	public static synthetic fun bind$default (Lspace/kscience/controls/modbus/DeviceProcessImageBuilder;Lspace/kscience/controls/modbus/ModbusRegistryKey$InputRegister;Lkotlin/jvm/functions/Function2;ILjava/lang/Object;)Lcom/ghgande/j2mod/modbus/procimg/SimpleInputRegister;
+	public final fun bindAction (Lspace/kscience/controls/modbus/ModbusRegistryKey$Coil;Lkotlin/jvm/functions/Function3;)Lcom/ghgande/j2mod/modbus/procimg/ObservableDigitalOut;
+	public final fun bindAction (Lspace/kscience/controls/modbus/ModbusRegistryKey$HoldingRange;Lkotlin/jvm/functions/Function3;)Ljava/util/List;
+	public final fun bindAction (Lspace/kscience/controls/modbus/ModbusRegistryKey$HoldingRegister;Lkotlin/jvm/functions/Function3;)Lcom/ghgande/j2mod/modbus/procimg/ObservableRegister;
+	public final fun getImage ()Lcom/ghgande/j2mod/modbus/procimg/ProcessImageImplementation;
+}
+
+public final class space/kscience/controls/modbus/DeviceProcessImageKt {
+	public static final fun bindProcessImage (Lspace/kscience/controls/api/Device;ZLkotlin/jvm/functions/Function1;)Lcom/ghgande/j2mod/modbus/procimg/ProcessImage;
+	public static synthetic fun bindProcessImage$default (Lspace/kscience/controls/api/Device;ZLkotlin/jvm/functions/Function1;ILjava/lang/Object;)Lcom/ghgande/j2mod/modbus/procimg/ProcessImage;
+}
+
+public abstract interface class space/kscience/controls/modbus/ModbusDevice : space/kscience/controls/api/Device {
+	public abstract fun getClientId ()I
+	public abstract fun getMaster ()Lcom/ghgande/j2mod/modbus/facade/AbstractModbusMaster;
+	public fun getValue (Lspace/kscience/controls/modbus/ModbusRegistryKey$Coil;Ljava/lang/Object;Lkotlin/reflect/KProperty;)Z
+	public fun getValue (Lspace/kscience/controls/modbus/ModbusRegistryKey$DiscreteInput;Ljava/lang/Object;Lkotlin/reflect/KProperty;)Z
+	public fun getValue (Lspace/kscience/controls/modbus/ModbusRegistryKey$HoldingRange;Ljava/lang/Object;Lkotlin/reflect/KProperty;)Ljava/lang/Object;
+	public fun getValue (Lspace/kscience/controls/modbus/ModbusRegistryKey$HoldingRegister;Ljava/lang/Object;Lkotlin/reflect/KProperty;)S
+	public fun getValue (Lspace/kscience/controls/modbus/ModbusRegistryKey$InputRange;Ljava/lang/Object;Lkotlin/reflect/KProperty;)Ljava/lang/Object;
+	public fun getValue (Lspace/kscience/controls/modbus/ModbusRegistryKey$InputRegister;Ljava/lang/Object;Lkotlin/reflect/KProperty;)S
+	public fun setValue (Lspace/kscience/controls/modbus/ModbusRegistryKey$Coil;Ljava/lang/Object;Lkotlin/reflect/KProperty;Z)V
+	public fun setValue (Lspace/kscience/controls/modbus/ModbusRegistryKey$HoldingRange;Ljava/lang/Object;Lkotlin/reflect/KProperty;Ljava/lang/Object;)V
+	public fun setValue (Lspace/kscience/controls/modbus/ModbusRegistryKey$HoldingRegister;Ljava/lang/Object;Lkotlin/reflect/KProperty;S)V
+}
+
+public class space/kscience/controls/modbus/ModbusDeviceBySpec : space/kscience/controls/spec/DeviceBySpec, space/kscience/controls/modbus/ModbusDevice {
+	public fun <init> (Lspace/kscience/dataforge/context/Context;Lspace/kscience/controls/spec/DeviceSpec;ILcom/ghgande/j2mod/modbus/facade/AbstractModbusMaster;ZLspace/kscience/dataforge/meta/Meta;)V
+	public synthetic fun <init> (Lspace/kscience/dataforge/context/Context;Lspace/kscience/controls/spec/DeviceSpec;ILcom/ghgande/j2mod/modbus/facade/AbstractModbusMaster;ZLspace/kscience/dataforge/meta/Meta;ILkotlin/jvm/internal/DefaultConstructorMarker;)V
+	public fun close ()V
+	public fun getClientId ()I
+	public fun getMaster ()Lcom/ghgande/j2mod/modbus/facade/AbstractModbusMaster;
+	public fun open (Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
+}
+
+public final class space/kscience/controls/modbus/ModbusDeviceKt {
+	public static final fun modbusDoubleRegister (Lspace/kscience/controls/modbus/ModbusDevice;I)Lkotlin/properties/ReadWriteProperty;
+	public static final fun modbusRegister (Lspace/kscience/controls/modbus/ModbusDevice;I)Lkotlin/properties/ReadWriteProperty;
+	public static final fun readCoil (Lspace/kscience/controls/modbus/ModbusDevice;I)Z
+	public static final fun readCoils (Lspace/kscience/controls/modbus/ModbusDevice;II)Lcom/ghgande/j2mod/modbus/util/BitVector;
+	public static final fun readDoubleInput (Lspace/kscience/controls/modbus/ModbusDevice;I)D
+	public static final fun readDoubleRegister (Lspace/kscience/controls/modbus/ModbusDevice;I)D
+	public static final fun readHoldingRegister (Lspace/kscience/controls/modbus/ModbusDevice;I)S
+	public static final fun readHoldingRegisters (Lspace/kscience/controls/modbus/ModbusDevice;II)Ljava/util/List;
+	public static final fun readHoldingRegistersToBuffer (Lspace/kscience/controls/modbus/ModbusDevice;II)Ljava/nio/ByteBuffer;
+	public static final fun readHoldingRegistersToPacket (Lspace/kscience/controls/modbus/ModbusDevice;II)Lio/ktor/utils/io/core/ByteReadPacket;
+	public static final fun readInputDiscrete (Lspace/kscience/controls/modbus/ModbusDevice;I)Z
+	public static final fun readInputDiscretes (Lspace/kscience/controls/modbus/ModbusDevice;II)Lcom/ghgande/j2mod/modbus/util/BitVector;
+	public static final fun readInputRegister (Lspace/kscience/controls/modbus/ModbusDevice;I)S
+	public static final fun readInputRegisters (Lspace/kscience/controls/modbus/ModbusDevice;II)Ljava/util/List;
+	public static final fun readInputRegistersToBuffer (Lspace/kscience/controls/modbus/ModbusDevice;II)Ljava/nio/ByteBuffer;
+	public static final fun readInputRegistersToPacket (Lspace/kscience/controls/modbus/ModbusDevice;II)Lio/ktor/utils/io/core/ByteReadPacket;
+	public static final fun writeCoil (Lspace/kscience/controls/modbus/ModbusDevice;IZ)V
+	public static final fun writeCoil (Lspace/kscience/controls/modbus/ModbusDevice;Lspace/kscience/controls/modbus/ModbusRegistryKey$Coil;Z)V
+	public static final fun writeCoils (Lspace/kscience/controls/modbus/ModbusDevice;I[Z)V
+	public static final fun writeHoldingRegister (Lspace/kscience/controls/modbus/ModbusDevice;IS)I
+	public static final fun writeHoldingRegister (Lspace/kscience/controls/modbus/ModbusDevice;Lspace/kscience/controls/modbus/ModbusRegistryKey$HoldingRegister;S)I
+	public static final fun writeHoldingRegisters (Lspace/kscience/controls/modbus/ModbusDevice;ILjava/nio/ByteBuffer;)I
+	public static final fun writeHoldingRegisters (Lspace/kscience/controls/modbus/ModbusDevice;I[S)I
+	public static final fun writeShortRegister (Lspace/kscience/controls/modbus/ModbusDevice;IS)V
+}
+
+public final class space/kscience/controls/modbus/ModbusHub : java/lang/AutoCloseable, space/kscience/controls/api/DeviceHub {
+	public fun <init> (Lspace/kscience/dataforge/context/Context;Lkotlin/jvm/functions/Function0;Ljava/util/Map;)V
+	public fun close ()V
+	public final fun getContext ()Lspace/kscience/dataforge/context/Context;
+	public fun getDevices ()Ljava/util/Map;
+	public final fun getMaster ()Lcom/ghgande/j2mod/modbus/facade/AbstractModbusMaster;
+	public final fun getMasterBuilder ()Lkotlin/jvm/functions/Function0;
+	public final fun getSpecs ()Ljava/util/Map;
+}
+
+public abstract class space/kscience/controls/modbus/ModbusRegistryKey {
+	public abstract fun getAddress ()I
+	public fun getCount ()I
+}
+
+public final class space/kscience/controls/modbus/ModbusRegistryKey$Coil : space/kscience/controls/modbus/ModbusRegistryKey {
+	public fun <init> (I)V
+	public final fun component1 ()I
+	public final fun copy (I)Lspace/kscience/controls/modbus/ModbusRegistryKey$Coil;
+	public static synthetic fun copy$default (Lspace/kscience/controls/modbus/ModbusRegistryKey$Coil;IILjava/lang/Object;)Lspace/kscience/controls/modbus/ModbusRegistryKey$Coil;
+	public fun equals (Ljava/lang/Object;)Z
+	public fun getAddress ()I
+	public fun hashCode ()I
+	public fun toString ()Ljava/lang/String;
+}
+
+public final class space/kscience/controls/modbus/ModbusRegistryKey$DiscreteInput : space/kscience/controls/modbus/ModbusRegistryKey {
+	public fun <init> (I)V
+	public final fun component1 ()I
+	public final fun copy (I)Lspace/kscience/controls/modbus/ModbusRegistryKey$DiscreteInput;
+	public static synthetic fun copy$default (Lspace/kscience/controls/modbus/ModbusRegistryKey$DiscreteInput;IILjava/lang/Object;)Lspace/kscience/controls/modbus/ModbusRegistryKey$DiscreteInput;
+	public fun equals (Ljava/lang/Object;)Z
+	public fun getAddress ()I
+	public fun hashCode ()I
+	public fun toString ()Ljava/lang/String;
+}
+
+public final class space/kscience/controls/modbus/ModbusRegistryKey$HoldingRange : space/kscience/controls/modbus/ModbusRegistryKey$HoldingRegister {
+	public fun <init> (IILspace/kscience/dataforge/io/IOFormat;)V
+	public fun getCount ()I
+	public final fun getEndAddress ()I
+	public final fun getFormat ()Lspace/kscience/dataforge/io/IOFormat;
+	public fun toString ()Ljava/lang/String;
+}
+
+public class space/kscience/controls/modbus/ModbusRegistryKey$HoldingRegister : space/kscience/controls/modbus/ModbusRegistryKey {
+	public fun <init> (I)V
+	public fun getAddress ()I
+	public fun toString ()Ljava/lang/String;
+}
+
+public final class space/kscience/controls/modbus/ModbusRegistryKey$InputRange : space/kscience/controls/modbus/ModbusRegistryKey$InputRegister {
+	public fun <init> (IILspace/kscience/dataforge/io/IOFormat;)V
+	public fun getCount ()I
+	public final fun getEndAddress ()I
+	public final fun getFormat ()Lspace/kscience/dataforge/io/IOFormat;
+	public fun toString ()Ljava/lang/String;
+}
+
+public class space/kscience/controls/modbus/ModbusRegistryKey$InputRegister : space/kscience/controls/modbus/ModbusRegistryKey {
+	public fun <init> (I)V
+	public fun getAddress ()I
+	public fun toString ()Ljava/lang/String;
+}
+
+public abstract class space/kscience/controls/modbus/ModbusRegistryMap {
+	public static final field Companion Lspace/kscience/controls/modbus/ModbusRegistryMap$Companion;
+	public fun <init> ()V
+	protected final fun coil (ILjava/lang/String;)Lspace/kscience/controls/modbus/ModbusRegistryKey$Coil;
+	public static synthetic fun coil$default (Lspace/kscience/controls/modbus/ModbusRegistryMap;ILjava/lang/String;ILjava/lang/Object;)Lspace/kscience/controls/modbus/ModbusRegistryKey$Coil;
+	protected final fun discrete (ILjava/lang/String;)Lspace/kscience/controls/modbus/ModbusRegistryKey$DiscreteInput;
+	public static synthetic fun discrete$default (Lspace/kscience/controls/modbus/ModbusRegistryMap;ILjava/lang/String;ILjava/lang/Object;)Lspace/kscience/controls/modbus/ModbusRegistryKey$DiscreteInput;
+	public final fun getEntries ()Ljava/util/Map;
+	protected final fun input (IILspace/kscience/dataforge/io/IOFormat;Ljava/lang/String;)Lspace/kscience/controls/modbus/ModbusRegistryKey$InputRange;
+	protected final fun input (ILjava/lang/String;)Lspace/kscience/controls/modbus/ModbusRegistryKey$InputRegister;
+	public static synthetic fun input$default (Lspace/kscience/controls/modbus/ModbusRegistryMap;IILspace/kscience/dataforge/io/IOFormat;Ljava/lang/String;ILjava/lang/Object;)Lspace/kscience/controls/modbus/ModbusRegistryKey$InputRange;
+	public static synthetic fun input$default (Lspace/kscience/controls/modbus/ModbusRegistryMap;ILjava/lang/String;ILjava/lang/Object;)Lspace/kscience/controls/modbus/ModbusRegistryKey$InputRegister;
+	protected final fun register (IILspace/kscience/dataforge/io/IOFormat;Ljava/lang/String;)Lspace/kscience/controls/modbus/ModbusRegistryKey$HoldingRange;
+	protected final fun register (ILjava/lang/String;)Lspace/kscience/controls/modbus/ModbusRegistryKey$HoldingRegister;
+	protected final fun register (Lspace/kscience/controls/modbus/ModbusRegistryKey;Ljava/lang/String;)Lspace/kscience/controls/modbus/ModbusRegistryKey;
+	public static synthetic fun register$default (Lspace/kscience/controls/modbus/ModbusRegistryMap;IILspace/kscience/dataforge/io/IOFormat;Ljava/lang/String;ILjava/lang/Object;)Lspace/kscience/controls/modbus/ModbusRegistryKey$HoldingRange;
+	public static synthetic fun register$default (Lspace/kscience/controls/modbus/ModbusRegistryMap;ILjava/lang/String;ILjava/lang/Object;)Lspace/kscience/controls/modbus/ModbusRegistryKey$HoldingRegister;
+}
+
+public final class space/kscience/controls/modbus/ModbusRegistryMap$Companion {
+	public final fun print (Lspace/kscience/controls/modbus/ModbusRegistryMap;Ljava/lang/Appendable;)V
+	public static synthetic fun print$default (Lspace/kscience/controls/modbus/ModbusRegistryMap$Companion;Lspace/kscience/controls/modbus/ModbusRegistryMap;Ljava/lang/Appendable;ILjava/lang/Object;)V
+	public final fun validate (Lspace/kscience/controls/modbus/ModbusRegistryMap;)V
+}
+

controls-modbus/build.gradle.kts

@@ -0,0 +1,39 @@
+import space.kscience.gradle.Maturity
+
+plugins {
+    id("space.kscience.gradle.jvm")
+    `maven-publish`
+}
+
+description = """
+    A plugin for Controls-kt device server on top of modbus-rtu/modbus-tcp protocols
+""".trimIndent()
+
+
+dependencies {
+    api(projects.controlsCore)
+    api("com.ghgande:j2mod:3.1.1")
+}
+
+readme{
+    maturity = Maturity.EXPERIMENTAL
+
+    feature("modbusRegistryMap", ref = "src/main/kotlin/space/kscience/controls/modbus/ModbusRegistryMap.kt"){
+        """
+            Type-safe modbus registry map. Allows to define both single-register and multi-register entries (using DataForge IO). 
+            Automatically checks consistency.
+        """.trimIndent()
+    }
+
+    feature("modbusProcessImage", ref = "src/main/kotlin/space/kscience/controls/modbus/DeviceProcessImage.kt"){
+        """
+            Binding of slave (server) modbus device to Controls-kt device
+        """.trimIndent()
+    }
+
+    feature("modbusDevice", ref = "src/main/kotlin/space/kscience/controls/modbus/ModbusDevice.kt"){
+        """
+            A device with additional methods to work with modbus registers.
+        """.trimIndent()
+    }
+}

controls-modbus/src/main/kotlin/space/kscience/controls/modbus/DeviceProcessImage.kt

@@ -0,0 +1,219 @@
+package space.kscience.controls.modbus
+
+import com.ghgande.j2mod.modbus.procimg.*
+import io.ktor.utils.io.core.buildPacket
+import io.ktor.utils.io.core.readByteBuffer
+import io.ktor.utils.io.core.writeShort
+import kotlinx.coroutines.launch
+import space.kscience.controls.api.Device
+import space.kscience.controls.spec.DevicePropertySpec
+import space.kscience.controls.spec.WritableDevicePropertySpec
+import space.kscience.controls.spec.set
+import space.kscience.controls.spec.useProperty
+
+
+public class DeviceProcessImageBuilder<D : Device> internal constructor(
+    private val device: D,
+    public val image: ProcessImageImplementation,
+) {
+
+    public fun bind(
+        key: ModbusRegistryKey.Coil,
+        block: D.(ObservableDigitalOut) -> Unit = {},
+    ): ObservableDigitalOut {
+        val coil = ObservableDigitalOut()
+        device.block(coil)
+        image.addDigitalOut(key.address, coil)
+        return coil
+    }
+
+    public fun bind(
+        key: ModbusRegistryKey.Coil,
+        propertySpec: WritableDevicePropertySpec<D, Boolean>,
+    ): ObservableDigitalOut = bind(key) { coil ->
+        coil.addObserver { _, _ ->
+            device[propertySpec] = coil.isSet
+        }
+        device.useProperty(propertySpec) { value ->
+            coil.set(value)
+        }
+    }
+
+    public fun bind(
+        key: ModbusRegistryKey.DiscreteInput,
+        block: D.(SimpleDigitalIn) -> Unit = {},
+    ): DigitalIn {
+        val input = SimpleDigitalIn()
+        device.block(input)
+        image.addDigitalIn(key.address, input)
+        return input
+    }
+
+    public fun bind(
+        key: ModbusRegistryKey.DiscreteInput,
+        propertySpec: DevicePropertySpec<D, Boolean>,
+    ): DigitalIn = bind(key) { input ->
+        device.useProperty(propertySpec) { value ->
+            input.set(value)
+        }
+    }
+
+    public fun bind(
+        key: ModbusRegistryKey.InputRegister,
+        block: D.(SimpleInputRegister) -> Unit = {},
+    ): SimpleInputRegister {
+        val input = SimpleInputRegister()
+        device.block(input)
+        image.addInputRegister(key.address, input)
+        return input
+    }
+
+    public fun bind(
+        key: ModbusRegistryKey.InputRegister,
+        propertySpec: DevicePropertySpec<D, Short>,
+    ): SimpleInputRegister = bind(key) { input ->
+        device.useProperty(propertySpec) { value ->
+            input.setValue(value)
+        }
+    }
+
+    public fun bind(
+        key: ModbusRegistryKey.HoldingRegister,
+        block: D.(ObservableRegister) -> Unit = {},
+    ): ObservableRegister {
+        val register = ObservableRegister()
+        device.block(register)
+        image.addRegister(key.address, register)
+        return register
+    }
+
+    public fun bind(
+        key: ModbusRegistryKey.HoldingRegister,
+        propertySpec: WritableDevicePropertySpec<D, Short>,
+    ): ObservableRegister = bind(key) { register ->
+        register.addObserver { _, _ ->
+            device[propertySpec] = register.toShort()
+        }
+        device.useProperty(propertySpec) { value ->
+            register.setValue(value)
+        }
+    }
+
+    public fun <T> bind(key: ModbusRegistryKey.InputRange<T>, propertySpec: DevicePropertySpec<D, T>) {
+        val registers = List(key.count) {
+            SimpleInputRegister()
+        }
+
+        registers.forEachIndexed { index, register ->
+            image.addInputRegister(key.address + index, register)
+        }
+
+        device.useProperty(propertySpec) { value ->
+            val packet = buildPacket {
+                key.format.writeObject(this, value)
+            }.readByteBuffer()
+            registers.forEachIndexed { index, register ->
+                register.setValue(packet.getShort(index * 2))
+            }
+        }
+    }
+
+    public fun <T> bind(key: ModbusRegistryKey.HoldingRange<T>, propertySpec: WritableDevicePropertySpec<D, T>) {
+        val registers = List(key.count) {
+            ObservableRegister()
+        }
+        registers.forEachIndexed { index, register ->
+            register.addObserver { _, _ ->
+                val packet = buildPacket {
+                    registers.forEach { value ->
+                        writeShort(value.toShort())
+                    }
+                }
+                device[propertySpec] = key.format.readObject(packet)
+            }
+            image.addRegister(key.address + index, register)
+        }
+
+        device.useProperty(propertySpec) { value ->
+            val packet = buildPacket {
+                key.format.writeObject(this, value)
+            }.readByteBuffer()
+            registers.forEachIndexed { index, observableRegister ->
+                observableRegister.setValue(packet.getShort(index * 2))
+            }
+        }
+    }
+
+    public fun bindAction(
+        key: ModbusRegistryKey.Coil,
+        action: suspend D.(Boolean) -> Unit,
+    ): ObservableDigitalOut {
+        val coil = ObservableDigitalOut()
+        coil.addObserver { _, _ ->
+            device.launch {
+                device.action(coil.isSet)
+            }
+        }
+        image.addDigitalOut(key.address, coil)
+        return coil
+    }
+
+    public fun bindAction(
+        key: ModbusRegistryKey.HoldingRegister,
+        action: suspend D.(Short) -> Unit,
+    ): ObservableRegister {
+        val register = ObservableRegister()
+        register.addObserver { _, _ ->
+
+            with(device) {
+                launch {
+                    action(register.toShort())
+                }
+            }
+        }
+        image.addRegister(key.address, register)
+        return register
+    }
+
+    public fun <T> bindAction(
+        key: ModbusRegistryKey.HoldingRange<T>,
+        action: suspend D.(T) -> Unit,
+    ): List<ObservableRegister> {
+        val registers = List(key.count) {
+            ObservableRegister()
+        }
+        registers.forEachIndexed { index, register ->
+            register.addObserver { _, _ ->
+                val packet = buildPacket {
+                    registers.forEach { value ->
+                        writeShort(value.toShort())
+                    }
+                }
+                device.launch {
+                    device.action(key.format.readObject(packet))
+                }
+            }
+            image.addRegister(key.address + index, register)
+        }
+
+        return registers
+    }
+
+}
+
+/**
+ * Bind the device to Modbus slave (server) image.
+ */
+public fun <D : Device> D.bindProcessImage(
+    openOnBind: Boolean = true,
+    binding: DeviceProcessImageBuilder<D>.() -> Unit,
+): ProcessImage {
+    val image = SimpleProcessImage()
+    DeviceProcessImageBuilder(this, image).apply(binding)
+    if (openOnBind) {
+        launch {
+            open()
+        }
+    }
+    return image
+}

controls-modbus/src/main/kotlin/space/kscience/controls/modbus/ModbusDevice.kt

@@ -0,0 +1,209 @@
+package space.kscience.controls.modbus
+
+import com.ghgande.j2mod.modbus.facade.AbstractModbusMaster
+import com.ghgande.j2mod.modbus.procimg.InputRegister
+import com.ghgande.j2mod.modbus.procimg.Register
+import com.ghgande.j2mod.modbus.procimg.SimpleInputRegister
+import com.ghgande.j2mod.modbus.util.BitVector
+import io.ktor.utils.io.core.ByteReadPacket
+import io.ktor.utils.io.core.buildPacket
+import io.ktor.utils.io.core.readByteBuffer
+import io.ktor.utils.io.core.writeShort
+import space.kscience.controls.api.Device
+import java.nio.ByteBuffer
+import kotlin.properties.ReadWriteProperty
+import kotlin.reflect.KProperty
+
+
+/**
+ * A Modbus device backed by j2mod client
+ */
+public interface ModbusDevice : Device {
+
+    /**
+     * Client id for this specific device
+     */
+    public val clientId: Int
+
+    /**
+     * The modubus master connector
+     */
+    public val master: AbstractModbusMaster
+
+    public operator fun ModbusRegistryKey.Coil.getValue(thisRef: Any?, property: KProperty<*>): Boolean =
+        readCoil(address)
+
+    public operator fun ModbusRegistryKey.Coil.setValue(thisRef: Any?, property: KProperty<*>, value: Boolean) {
+        writeCoil(address, value)
+    }
+
+    public operator fun ModbusRegistryKey.DiscreteInput.getValue(thisRef: Any?, property: KProperty<*>): Boolean =
+        readInputDiscrete(address)
+
+    public operator fun ModbusRegistryKey.InputRegister.getValue(thisRef: Any?, property: KProperty<*>): Short =
+        readInputRegister(address)
+
+    public operator fun <T> ModbusRegistryKey.InputRange<T>.getValue(thisRef: Any?, property: KProperty<*>): T {
+        val packet = readInputRegistersToPacket(address, count)
+        return format.readObject(packet)
+    }
+
+
+    public operator fun ModbusRegistryKey.HoldingRegister.getValue(thisRef: Any?, property: KProperty<*>): Short =
+        readHoldingRegister(address)
+
+    public operator fun ModbusRegistryKey.HoldingRegister.setValue(
+        thisRef: Any?,
+        property: KProperty<*>,
+        value: Short,
+    ) {
+        writeHoldingRegister(address, value)
+    }
+
+    public operator fun <T> ModbusRegistryKey.HoldingRange<T>.getValue(thisRef: Any?, property: KProperty<*>): T {
+        val packet = readInputRegistersToPacket(address, count)
+        return format.readObject(packet)
+    }
+
+    public operator fun <T> ModbusRegistryKey.HoldingRange<T>.setValue(
+        thisRef: Any?,
+        property: KProperty<*>,
+        value: T,
+    ) {
+        val buffer = buildPacket {
+            format.writeObject(this, value)
+        }.readByteBuffer()
+        writeHoldingRegisters(address, buffer)
+    }
+
+}
+
+/**
+ * Read multiple sequential modbus coils (bit-values)
+ */
+public fun ModbusDevice.readCoils(address: Int, count: Int): BitVector =
+    master.readCoils(clientId, address, count)
+
+public fun ModbusDevice.readCoil(address: Int): Boolean =
+    master.readCoils(clientId, address, 1).getBit(0)
+
+public fun ModbusDevice.writeCoils(address: Int, values: BooleanArray) {
+    val bitVector = BitVector(values.size)
+    values.forEachIndexed { index, value ->
+        bitVector.setBit(index, value)
+    }
+    master.writeMultipleCoils(clientId, address, bitVector)
+}
+
+public fun ModbusDevice.writeCoil(address: Int, value: Boolean) {
+    master.writeCoil(clientId, address, value)
+}
+
+public fun ModbusDevice.writeCoil(key: ModbusRegistryKey.Coil, value: Boolean) {
+    master.writeCoil(clientId, key.address, value)
+}
+
+public fun ModbusDevice.readInputDiscretes(address: Int, count: Int): BitVector =
+    master.readInputDiscretes(clientId, address, count)
+
+public fun ModbusDevice.readInputDiscrete(address: Int): Boolean =
+    master.readInputDiscretes(clientId, address, 1).getBit(0)
+
+public fun ModbusDevice.readInputRegisters(address: Int, count: Int): List<InputRegister> =
+    master.readInputRegisters(clientId, address, count).toList()
+
+private fun Array<out InputRegister>.toBuffer(): ByteBuffer {
+    val buffer: ByteBuffer = ByteBuffer.allocate(size * 2)
+    forEachIndexed { index, value ->
+        buffer.position(index * 2)
+        buffer.put(value.toBytes())
+    }
+    buffer.flip()
+    return buffer
+}
+
+private fun Array<out InputRegister>.toPacket(): ByteReadPacket = buildPacket {
+    forEach { value ->
+        writeShort(value.toShort())
+    }
+}
+
+public fun ModbusDevice.readInputRegistersToBuffer(address: Int, count: Int): ByteBuffer =
+    master.readInputRegisters(clientId, address, count).toBuffer()
+
+public fun ModbusDevice.readInputRegistersToPacket(address: Int, count: Int): ByteReadPacket =
+    master.readInputRegisters(clientId, address, count).toPacket()
+
+public fun ModbusDevice.readDoubleInput(address: Int): Double =
+    readInputRegistersToBuffer(address, Double.SIZE_BYTES).getDouble()
+
+public fun ModbusDevice.readInputRegister(address: Int): Short =
+    readInputRegisters(address, 1).first().toShort()
+
+public fun ModbusDevice.readHoldingRegisters(address: Int, count: Int): List<Register> =
+    master.readMultipleRegisters(clientId, address, count).toList()
+
+/**
+ * Read a number of registers to a [ByteBuffer]
+ * @param address of a register
+ * @param count number of 2-bytes registers to read. Buffer size is 2*[count]
+ */
+public fun ModbusDevice.readHoldingRegistersToBuffer(address: Int, count: Int): ByteBuffer =
+    master.readMultipleRegisters(clientId, address, count).toBuffer()
+
+public fun ModbusDevice.readHoldingRegistersToPacket(address: Int, count: Int): ByteReadPacket =
+    master.readMultipleRegisters(clientId, address, count).toPacket()
+
+public fun ModbusDevice.readDoubleRegister(address: Int): Double =
+    readHoldingRegistersToBuffer(address, Double.SIZE_BYTES).getDouble()
+
+public fun ModbusDevice.readHoldingRegister(address: Int): Short =
+    readHoldingRegisters(address, 1).first().toShort()
+
+public fun ModbusDevice.writeHoldingRegisters(address: Int, values: ShortArray): Int =
+    master.writeMultipleRegisters(
+        clientId,
+        address,
+        Array<Register>(values.size) { SimpleInputRegister(values[it].toInt()) }
+    )
+
+public fun ModbusDevice.writeHoldingRegister(address: Int, value: Short): Int =
+    master.writeSingleRegister(
+        clientId,
+        address,
+        SimpleInputRegister(value.toInt())
+    )
+
+public fun ModbusDevice.writeHoldingRegister(key: ModbusRegistryKey.HoldingRegister, value: Short): Int =
+    writeHoldingRegister(key.address, value)
+
+public fun ModbusDevice.writeHoldingRegisters(address: Int, buffer: ByteBuffer): Int {
+    val array: ShortArray = ShortArray(buffer.limit().floorDiv(2)) { buffer.getShort(it * 2) }
+
+    return writeHoldingRegisters(address, array)
+}
+
+public fun ModbusDevice.writeShortRegister(address: Int, value: Short) {
+    master.writeSingleRegister(address, SimpleInputRegister(value.toInt()))
+}
+
+public fun ModbusDevice.modbusRegister(
+    address: Int,
+): ReadWriteProperty<ModbusDevice, Short> = object : ReadWriteProperty<ModbusDevice, Short> {
+    override fun getValue(thisRef: ModbusDevice, property: KProperty<*>): Short = readHoldingRegister(address)
+
+    override fun setValue(thisRef: ModbusDevice, property: KProperty<*>, value: Short) {
+        writeHoldingRegister(address, value)
+    }
+}
+
+public fun ModbusDevice.modbusDoubleRegister(
+    address: Int,
+): ReadWriteProperty<ModbusDevice, Double> = object : ReadWriteProperty<ModbusDevice, Double> {
+    override fun getValue(thisRef: ModbusDevice, property: KProperty<*>): Double = readDoubleRegister(address)
+
+    override fun setValue(thisRef: ModbusDevice, property: KProperty<*>, value: Double) {
+        val buffer = ByteBuffer.allocate(Double.SIZE_BYTES).apply { putDouble(value) }
+        writeHoldingRegisters(address, buffer)
+    }
+}

controls-modbus/src/main/kotlin/space/kscience/controls/modbus/ModbusDeviceBySpec.kt

@@ -0,0 +1,59 @@
+package space.kscience.controls.modbus
+
+import com.ghgande.j2mod.modbus.facade.AbstractModbusMaster
+import space.kscience.controls.api.Device
+import space.kscience.controls.api.DeviceHub
+import space.kscience.controls.spec.DeviceBySpec
+import space.kscience.controls.spec.DeviceSpec
+import space.kscience.dataforge.context.Context
+import space.kscience.dataforge.meta.Meta
+import space.kscience.dataforge.names.NameToken
+
+/**
+ * A variant of [DeviceBySpec] that includes Modbus RTU/TCP/UDP client
+ */
+public open class ModbusDeviceBySpec<D: Device>(
+    context: Context,
+    spec: DeviceSpec<D>,
+    override val clientId: Int,
+    override val master: AbstractModbusMaster,
+    private val disposeMasterOnClose: Boolean = true,
+    meta: Meta = Meta.EMPTY,
+) : ModbusDevice, DeviceBySpec<D>(spec, context, meta){
+    override suspend fun open() {
+        master.connect()
+        super<DeviceBySpec>.open()
+    }
+
+    override fun close() {
+        if(disposeMasterOnClose){
+            master.disconnect()
+        }
+        super<ModbusDevice>.close()
+    }
+}
+
+
+public class ModbusHub(
+    public val context: Context,
+    public val masterBuilder: () -> AbstractModbusMaster,
+    public val specs: Map<NameToken, Pair<Int, DeviceSpec<*>>>,
+) : DeviceHub, AutoCloseable {
+
+    public val master: AbstractModbusMaster by lazy(masterBuilder)
+
+    override val devices: Map<NameToken, ModbusDevice> by lazy {
+        specs.mapValues { (_, pair) ->
+            ModbusDeviceBySpec(
+                context,
+                pair.second,
+                pair.first,
+                master
+            )
+        }
+    }
+
+    override fun close() {
+        master.disconnect()
+    }
+}

controls-modbus/src/main/kotlin/space/kscience/controls/modbus/ModbusRegistryMap.kt

@@ -0,0 +1,163 @@
+package space.kscience.controls.modbus
+
+import space.kscience.dataforge.io.IOFormat
+
+
+public sealed class ModbusRegistryKey {
+    public abstract val address: Int
+    public open val count: Int = 1
+
+
+    /**
+     * Read-only boolean value
+     */
+    public data class Coil(override val address: Int) : ModbusRegistryKey()
+
+    /**
+     * Read-write boolean value
+     */
+    public data class DiscreteInput(override val address: Int) : ModbusRegistryKey()
+
+    /**
+     * Read-only binary value
+     */
+    public open class InputRegister(override val address: Int) : ModbusRegistryKey() {
+        override fun toString(): String = "InputRegister(address=$address)"
+    }
+
+    public class InputRange<T>(
+        address: Int,
+        override val count: Int,
+        public val format: IOFormat<T>,
+    ) : InputRegister(address) {
+        public val endAddress: Int get() = address + count
+        override fun toString(): String = "InputRange(count=$count, format=$format)"
+
+
+    }
+
+    public open class HoldingRegister(override val address: Int) : ModbusRegistryKey() {
+        override fun toString(): String = "HoldingRegister(address=$address)"
+    }
+
+    public class HoldingRange<T>(
+        address: Int,
+        override val count: Int,
+        public val format: IOFormat<T>,
+    ) : HoldingRegister(address) {
+        public val endAddress: Int get() = address + count
+        override fun toString(): String = "HoldingRange(count=$count, format=$format)"
+
+
+    }
+}
+
+public abstract class ModbusRegistryMap {
+
+    private val _entries: MutableMap<ModbusRegistryKey, String> = mutableMapOf<ModbusRegistryKey, String>()
+
+    public val entries: Map<ModbusRegistryKey, String> get() = _entries
+
+    protected fun <T : ModbusRegistryKey> register(key: T, description: String): T {
+        _entries[key] = description
+        return key
+    }
+
+    protected fun coil(address: Int, description: String = ""): ModbusRegistryKey.Coil =
+        register(ModbusRegistryKey.Coil(address), description)
+
+
+    protected fun discrete(address: Int, description: String = ""): ModbusRegistryKey.DiscreteInput =
+        register(ModbusRegistryKey.DiscreteInput(address), description)
+
+    protected fun input(address: Int, description: String = ""): ModbusRegistryKey.InputRegister =
+        register(ModbusRegistryKey.InputRegister(address), description)
+
+    protected fun <T> input(
+        address: Int,
+        count: Int,
+        reader: IOFormat<T>,
+        description: String = "",
+    ): ModbusRegistryKey.InputRange<T> =
+        register(ModbusRegistryKey.InputRange(address, count, reader), description)
+
+    protected fun register(address: Int, description: String = ""): ModbusRegistryKey.HoldingRegister =
+        register(ModbusRegistryKey.HoldingRegister(address), description)
+
+    protected fun <T> register(
+        address: Int,
+        count: Int,
+        format: IOFormat<T>,
+        description: String = "",
+    ): ModbusRegistryKey.HoldingRange<T> =
+        register(ModbusRegistryKey.HoldingRange(address, count, format), description)
+
+    public companion object {
+        public fun validate(map: ModbusRegistryMap) {
+            var lastCoil: ModbusRegistryKey.Coil? = null
+            var lastDiscreteInput: ModbusRegistryKey.DiscreteInput? = null
+            var lastInput: ModbusRegistryKey.InputRegister? = null
+            var lastRegister: ModbusRegistryKey.HoldingRegister? = null
+            map.entries.keys.sortedBy { it.address }.forEach { key ->
+                when (key) {
+                    is ModbusRegistryKey.Coil -> if (lastCoil?.let { key.address >= it.address + it.count } != false) {
+                        lastCoil = key
+                    } else {
+                        error("Key $lastCoil overlaps with key $key")
+                    }
+
+                    is ModbusRegistryKey.DiscreteInput -> if (lastDiscreteInput?.let { key.address >= it.address + it.count } != false) {
+                        lastDiscreteInput = key
+                    } else {
+                        error("Key $lastDiscreteInput overlaps with key $key")
+                    }
+
+                    is ModbusRegistryKey.InputRegister -> if (lastInput?.let { key.address >= it.address + it.count } != false) {
+                        lastInput = key
+                    } else {
+                        error("Key $lastInput overlaps with key $key")
+                    }
+
+                    is ModbusRegistryKey.HoldingRegister -> if (lastRegister?.let { key.address >= it.address + it.count } != false) {
+                        lastRegister = key
+                    } else {
+                        error("Key $lastRegister overlaps with key $key")
+                    }
+                }
+            }
+        }
+
+        private val ModbusRegistryKey.sectionNumber
+            get() = when (this) {
+                is ModbusRegistryKey.Coil -> 1
+                is ModbusRegistryKey.DiscreteInput -> 2
+                is ModbusRegistryKey.HoldingRegister -> 4
+                is ModbusRegistryKey.InputRegister -> 3
+            }
+
+        public fun print(map: ModbusRegistryMap, to: Appendable = System.out) {
+            validate(map)
+            map.entries.entries
+                .sortedWith(
+                    Comparator.comparingInt<Map.Entry<ModbusRegistryKey, String>?> { it.key.sectionNumber }
+                        .thenComparingInt { it.key.address }
+                )
+                .forEach { (key, description) ->
+                    val typeString = when (key) {
+                        is ModbusRegistryKey.Coil -> "Coil"
+                        is ModbusRegistryKey.DiscreteInput -> "Discrete"
+                        is ModbusRegistryKey.HoldingRegister -> "Register"
+                        is ModbusRegistryKey.InputRegister -> "Input"
+                    }
+                    val rangeString = if (key.count == 1) {
+                        key.address.toString()
+                    } else {
+                        "${key.address} - ${key.address + key.count}"
+                    }
+                    to.appendLine("${typeString}\t$rangeString\t$description")
+                }
+        }
+    }
+}
+
+

controls-opcua/README.md

@@ -0,0 +1,29 @@
+# Module controls-opcua
+
+A client and server connectors for OPC-UA via Eclipse Milo
+
+## Features
+
+ - [opcuaClient](src/main/kotlin/space/kscience/controls/opcua/client) : Connect a Controls-kt as a client to OPC UA server
+ - [opcuaServer](src/main/kotlin/space/kscience/controls/opcua/server) : Create an OPC UA server on top of Controls-kt device (or device hub)
+
+
+## Usage
+
+## Artifact:
+
+The Maven coordinates of this project are `space.kscience:controls-opcua:0.2.0`.
+
+**Gradle Kotlin DSL:**
+```kotlin
+repositories {
+    maven("https://repo.kotlin.link")
+    //uncomment to access development builds
+    //maven("https://maven.pkg.jetbrains.space/spc/p/sci/dev")
+    mavenCentral()
+}
+
+dependencies {
+    implementation("space.kscience:controls-opcua:0.2.0")
+}
+```

controls-opcua/api/controls-opcua.api

@@ -0,0 +1,82 @@
+public final class space/kscience/controls/opcua/client/MetaBsdParser : org/eclipse/milo/opcua/binaryschema/parser/BsdParser {
+	public fun <init> ()V
+}
+
+public final class space/kscience/controls/opcua/client/MetaBsdParserKt {
+	public static final fun toMeta (Lorg/eclipse/milo/opcua/stack/core/types/builtin/Variant;Lorg/eclipse/milo/opcua/stack/core/serialization/SerializationContext;)Lspace/kscience/dataforge/meta/Meta;
+}
+
+public final class space/kscience/controls/opcua/client/MiloConfiguration : space/kscience/dataforge/meta/Scheme {
+	public static final field Companion Lspace/kscience/controls/opcua/client/MiloConfiguration$Companion;
+	public fun <init> ()V
+	public final fun getEndpointUrl ()Ljava/lang/String;
+	public final fun getSecurityPolicy ()Lorg/eclipse/milo/opcua/stack/core/security/SecurityPolicy;
+	public final fun getUsername ()Lspace/kscience/controls/opcua/client/MiloUsername;
+	public final fun setEndpointUrl (Ljava/lang/String;)V
+	public final fun setSecurityPolicy (Lorg/eclipse/milo/opcua/stack/core/security/SecurityPolicy;)V
+	public final fun setUsername (Lspace/kscience/controls/opcua/client/MiloUsername;)V
+}
+
+public final class space/kscience/controls/opcua/client/MiloConfiguration$Companion : space/kscience/dataforge/meta/SchemeSpec {
+}
+
+public abstract class space/kscience/controls/opcua/client/MiloIdentity : space/kscience/dataforge/meta/Scheme {
+}
+
+public final class space/kscience/controls/opcua/client/MiloUsername : space/kscience/controls/opcua/client/MiloIdentity {
+	public static final field Companion Lspace/kscience/controls/opcua/client/MiloUsername$Companion;
+	public fun <init> ()V
+	public final fun getPassword ()Ljava/lang/String;
+	public final fun getUsername ()Ljava/lang/String;
+	public final fun setPassword (Ljava/lang/String;)V
+	public final fun setUsername (Ljava/lang/String;)V
+}
+
+public final class space/kscience/controls/opcua/client/MiloUsername$Companion : space/kscience/dataforge/meta/SchemeSpec {
+}
+
+public abstract interface class space/kscience/controls/opcua/client/OpcUaDevice : space/kscience/controls/api/Device {
+	public abstract fun getClient ()Lorg/eclipse/milo/opcua/sdk/client/OpcUaClient;
+}
+
+public class space/kscience/controls/opcua/client/OpcUaDeviceBySpec : space/kscience/controls/spec/DeviceBySpec, space/kscience/controls/opcua/client/OpcUaDevice {
+	public fun <init> (Lspace/kscience/controls/spec/DeviceSpec;Lspace/kscience/controls/opcua/client/MiloConfiguration;Lspace/kscience/dataforge/context/Context;)V
+	public synthetic fun <init> (Lspace/kscience/controls/spec/DeviceSpec;Lspace/kscience/controls/opcua/client/MiloConfiguration;Lspace/kscience/dataforge/context/Context;ILkotlin/jvm/internal/DefaultConstructorMarker;)V
+	public fun close ()V
+	public fun getClient ()Lorg/eclipse/milo/opcua/sdk/client/OpcUaClient;
+}
+
+public final class space/kscience/controls/opcua/client/OpcUaDeviceKt {
+	public static final fun opcDouble (Lspace/kscience/controls/opcua/client/OpcUaDevice;Lorg/eclipse/milo/opcua/stack/core/types/builtin/NodeId;D)Lkotlin/properties/ReadWriteProperty;
+	public static synthetic fun opcDouble$default (Lspace/kscience/controls/opcua/client/OpcUaDevice;Lorg/eclipse/milo/opcua/stack/core/types/builtin/NodeId;DILjava/lang/Object;)Lkotlin/properties/ReadWriteProperty;
+	public static final fun opcInt (Lspace/kscience/controls/opcua/client/OpcUaDevice;Lorg/eclipse/milo/opcua/stack/core/types/builtin/NodeId;D)Lkotlin/properties/ReadWriteProperty;
+	public static synthetic fun opcInt$default (Lspace/kscience/controls/opcua/client/OpcUaDevice;Lorg/eclipse/milo/opcua/stack/core/types/builtin/NodeId;DILjava/lang/Object;)Lkotlin/properties/ReadWriteProperty;
+	public static final fun opcString (Lspace/kscience/controls/opcua/client/OpcUaDevice;Lorg/eclipse/milo/opcua/stack/core/types/builtin/NodeId;D)Lkotlin/properties/ReadWriteProperty;
+	public static synthetic fun opcString$default (Lspace/kscience/controls/opcua/client/OpcUaDevice;Lorg/eclipse/milo/opcua/stack/core/types/builtin/NodeId;DILjava/lang/Object;)Lkotlin/properties/ReadWriteProperty;
+}
+
+public final class space/kscience/controls/opcua/server/DeviceNameSpace : org/eclipse/milo/opcua/sdk/server/api/ManagedNamespaceWithLifecycle {
+	public static final field Companion Lspace/kscience/controls/opcua/server/DeviceNameSpace$Companion;
+	public static final field NAMESPACE_URI Ljava/lang/String;
+	public fun <init> (Lorg/eclipse/milo/opcua/sdk/server/OpcUaServer;Lspace/kscience/controls/manager/DeviceManager;)V
+	public final fun getDeviceManager ()Lspace/kscience/controls/manager/DeviceManager;
+	public fun onDataItemsCreated (Ljava/util/List;)V
+	public fun onDataItemsDeleted (Ljava/util/List;)V
+	public fun onDataItemsModified (Ljava/util/List;)V
+	public fun onMonitoringModeChanged (Ljava/util/List;)V
+}
+
+public final class space/kscience/controls/opcua/server/DeviceNameSpace$Companion {
+}
+
+public final class space/kscience/controls/opcua/server/DeviceNameSpaceKt {
+	public static final fun get (Lspace/kscience/controls/api/Device;Lspace/kscience/controls/api/PropertyDescriptor;)Lspace/kscience/dataforge/meta/Meta;
+	public static final fun read (Lspace/kscience/controls/api/Device;Lspace/kscience/controls/api/PropertyDescriptor;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
+	public static final fun serveDevices (Lorg/eclipse/milo/opcua/sdk/server/OpcUaServer;Lspace/kscience/controls/manager/DeviceManager;)Lspace/kscience/controls/opcua/server/DeviceNameSpace;
+}
+
+public final class space/kscience/controls/opcua/server/ServerUtilsKt {
+	public static final fun OpcUaServer (Lkotlin/jvm/functions/Function1;)Lorg/eclipse/milo/opcua/sdk/server/OpcUaServer;
+	public static final fun endpoint (Lorg/eclipse/milo/opcua/sdk/server/api/config/OpcUaServerConfigBuilder;Lkotlin/jvm/functions/Function1;)V
+}
+

controls-opcua/build.gradle.kts

@@ -0,0 +1,41 @@
+import space.kscience.gradle.Maturity
+
+plugins {
+    id("space.kscience.gradle.jvm")
+    `maven-publish`
+}
+
+description = """
+    A client and server connectors for OPC-UA via Eclipse Milo
+""".trimIndent()
+
+val ktorVersion: String by rootProject.extra
+
+val miloVersion: String = "0.6.10"
+
+dependencies {
+    api(projects.controlsCore)
+    api(spclibs.kotlinx.coroutines.jdk8)
+
+    api("org.eclipse.milo:sdk-client:$miloVersion")
+    api("org.eclipse.milo:bsd-parser:$miloVersion")
+    api("org.eclipse.milo:sdk-server:$miloVersion")
+
+    testImplementation(spclibs.kotlinx.coroutines.test)
+}
+
+readme{
+    maturity = Maturity.EXPERIMENTAL
+
+    feature("opcuaClient", ref = "src/main/kotlin/space/kscience/controls/opcua/client"){
+        """
+            Connect a Controls-kt as a client to OPC UA server
+        """.trimIndent()
+    }
+
+    feature("opcuaServer", ref = "src/main/kotlin/space/kscience/controls/opcua/server"){
+        """
+            Create an OPC UA server on top of Controls-kt device (or device hub)
+        """.trimIndent()
+    }
+}

controls-opcua/src/main/kotlin/space/kscience/controls/opcua/client/MetaBsdParser.kt

@@ -0,0 +1,209 @@
+package space.kscience.controls.opcua.client
+
+import kotlinx.datetime.toJavaInstant
+import kotlinx.datetime.toKotlinInstant
+import org.eclipse.milo.opcua.binaryschema.AbstractCodec
+import org.eclipse.milo.opcua.binaryschema.parser.BsdParser
+import org.eclipse.milo.opcua.stack.core.UaSerializationException
+import org.eclipse.milo.opcua.stack.core.serialization.OpcUaBinaryStreamDecoder
+import org.eclipse.milo.opcua.stack.core.serialization.OpcUaBinaryStreamEncoder
+import org.eclipse.milo.opcua.stack.core.serialization.SerializationContext
+import org.eclipse.milo.opcua.stack.core.serialization.codecs.OpcUaBinaryDataTypeCodec
+import org.eclipse.milo.opcua.stack.core.types.builtin.*
+import org.eclipse.milo.opcua.stack.core.types.builtin.unsigned.*
+import org.opcfoundation.opcua.binaryschema.EnumeratedType
+import org.opcfoundation.opcua.binaryschema.StructuredType
+import space.kscience.controls.misc.instant
+import space.kscience.controls.misc.toMeta
+import space.kscience.dataforge.meta.*
+import space.kscience.dataforge.names.Name
+import space.kscience.dataforge.names.asName
+import java.util.*
+
+
+public class MetaBsdParser : BsdParser() {
+    override fun getEnumCodec(enumeratedType: EnumeratedType): OpcUaBinaryDataTypeCodec<*> {
+        return MetaEnumCodec()
+    }
+
+    override fun getStructCodec(structuredType: StructuredType): OpcUaBinaryDataTypeCodec<*> {
+        return MetaStructureCodec(structuredType)
+    }
+}
+
+internal class MetaEnumCodec : OpcUaBinaryDataTypeCodec<Number> {
+    override fun getType(): Class<Number> {
+        return Number::class.java
+    }
+
+    @Throws(UaSerializationException::class)
+    override fun encode(
+        context: SerializationContext,
+        encoder: OpcUaBinaryStreamEncoder,
+        value: Number
+    ) {
+        encoder.writeInt32(value.toInt())
+    }
+
+    @Throws(UaSerializationException::class)
+    override fun decode(
+        context: SerializationContext,
+        decoder: OpcUaBinaryStreamDecoder
+    ): Number {
+        return decoder.readInt32()
+    }
+}
+
+internal fun opcToMeta(value: Any?): Meta = when (value) {
+    null -> Meta(Null)
+    is Meta -> value
+    is Value -> Meta(value)
+    is Number -> when (value) {
+        is UByte -> Meta(value.toShort().asValue())
+        is UShort -> Meta(value.toInt().asValue())
+        is UInteger -> Meta(value.toLong().asValue())
+        is ULong -> Meta(value.toBigInteger().asValue())
+        else -> Meta(value.asValue())
+    }
+    is Boolean -> Meta(value.asValue())
+    is String -> Meta(value.asValue())
+    is Char -> Meta(value.toString().asValue())
+    is DateTime -> value.javaInstant.toKotlinInstant().toMeta()
+    is UUID -> Meta(value.toString().asValue())
+    is QualifiedName -> Meta {
+        "namespaceIndex" put value.namespaceIndex
+        "name" put value.name?.asValue()
+    }
+    is LocalizedText -> Meta {
+        "locale" put value.locale?.asValue()
+        "text" put value.text?.asValue()
+    }
+    is DataValue -> Meta {
+        "value" put opcToMeta(value.value) // need SerializationContext to do that properly
+        value.statusCode?.value?.let { "status" put Meta(it.asValue()) }
+        value.sourceTime?.javaInstant?.let { "sourceTime" put it.toKotlinInstant().toMeta() }
+        value.sourcePicoseconds?.let { "sourcePicoseconds" put Meta(it.asValue()) }
+        value.serverTime?.javaInstant?.let { "serverTime" put it.toKotlinInstant().toMeta() }
+        value.serverPicoseconds?.let { "serverPicoseconds" put Meta(it.asValue()) }
+    }
+    is ByteString -> Meta(value.bytesOrEmpty().asValue())
+    is XmlElement -> Meta(value.fragment?.asValue() ?: Null)
+    is NodeId -> Meta(value.toParseableString().asValue())
+    is ExpandedNodeId -> Meta(value.toParseableString().asValue())
+    is StatusCode -> Meta(value.value.asValue())
+    //is ExtensionObject -> value.decode(client.getDynamicSerializationContext())
+    else -> error("Could not create Meta for value: $value")
+}
+
+
+/**
+ * based on https://github.com/eclipse/milo/blob/master/opc-ua-stack/bsd-parser-gson/src/main/java/org/eclipse/milo/opcua/binaryschema/gson/JsonStructureCodec.java
+ */
+internal class MetaStructureCodec(
+    structuredType: StructuredType?
+) : AbstractCodec<Meta, Meta>(structuredType) {
+
+    override fun getType(): Class<Meta> = Meta::class.java
+
+    override fun createStructure(name: String, members: LinkedHashMap<String, Meta>): Meta = Meta {
+        members.forEach { (property: String, value: Meta?) ->
+            setMeta(Name.parse(property), value)
+        }
+    }
+
+    override fun opcUaToMemberTypeScalar(name: String, value: Any?, typeName: String): Meta = opcToMeta(value)
+
+    override fun opcUaToMemberTypeArray(name: String, values: Any?, typeName: String): Meta = if (values == null) {
+        Meta(Null)
+    } else {
+        // This is a bit array...
+        when (values) {
+            is DoubleArray -> Meta(values.asValue())
+            is FloatArray -> Meta(values.asValue())
+            is IntArray -> Meta(values.asValue())
+            is ByteArray -> Meta(values.asValue())
+            is ShortArray -> Meta(values.asValue())
+            is Array<*> -> Meta {
+                setIndexed(Name.parse(name), values.map { opcUaToMemberTypeScalar(name, it, typeName) })
+            }
+            is Number -> Meta(values.asValue())
+            else -> error("Could not create Meta for value: $values")
+        }
+    }
+
+    override fun memberTypeToOpcUaScalar(member: Meta?, typeName: String): Any? =
+        if (member == null || member.isEmpty()) {
+            null
+        } else when (typeName) {
+            "Boolean" -> member.boolean
+            "SByte" -> member.value?.numberOrNull?.toByte()
+            "Int16" -> member.value?.numberOrNull?.toShort()
+            "Int32" -> member.value?.numberOrNull?.toInt()
+            "Int64" -> member.value?.numberOrNull?.toLong()
+            "Byte" -> member.value?.numberOrNull?.toShort()?.let { Unsigned.ubyte(it) }
+            "UInt16" -> member.value?.numberOrNull?.toInt()?.let { Unsigned.ushort(it) }
+            "UInt32" -> member.value?.numberOrNull?.toLong()?.let { Unsigned.uint(it) }
+            "UInt64" -> member.value?.numberOrNull?.toLong()?.let { Unsigned.ulong(it) }
+            "Float" -> member.value?.numberOrNull?.toFloat()
+            "Double" -> member.value?.numberOrNull?.toDouble()
+            "String" -> member.string
+            "DateTime" -> DateTime(member.instant().toJavaInstant())
+            "Guid" -> member.string?.let { UUID.fromString(it) }
+            "ByteString" -> member.value?.list?.let { list ->
+                ByteString(list.map { it.number.toByte() }.toByteArray())
+            }
+            "XmlElement" -> member.string?.let { XmlElement(it) }
+            "NodeId" -> member.string?.let { NodeId.parse(it) }
+            "ExpandedNodeId" -> member.string?.let { ExpandedNodeId.parse(it) }
+            "StatusCode" -> member.long?.let { StatusCode(it) }
+            "QualifiedName" -> QualifiedName(
+                member["namespaceIndex"].int ?: 0,
+                member["name"].string
+            )
+            "LocalizedText" -> LocalizedText(
+                member["locale"].string,
+                member["text"].string
+            )
+            else -> member.toString()
+        }
+
+    override fun memberTypeToOpcUaArray(member: Meta, typeName: String): Any = if ("Bit" == typeName) {
+        member.value?.int ?: error("Meta node does not contain int value")
+    } else {
+        when (typeName) {
+            "SByte" -> member.value?.list?.map { it.number.toByte() }?.toByteArray() ?: emptyArray<Byte>()
+            "Int16" -> member.value?.list?.map { it.number.toShort() }?.toShortArray() ?: emptyArray<Short>()
+            "Int32" -> member.value?.list?.map { it.number.toInt() }?.toIntArray() ?: emptyArray<Int>()
+            "Int64" -> member.value?.list?.map { it.number.toLong() }?.toLongArray() ?: emptyArray<Long>()
+            "Byte" -> member.value?.list?.map {
+                Unsigned.ubyte(it.number.toShort())
+            }?.toTypedArray() ?: emptyArray<UByte>()
+            "UInt16" -> member.value?.list?.map {
+                Unsigned.ushort(it.number.toInt())
+            }?.toTypedArray() ?: emptyArray<UShort>()
+            "UInt32" -> member.value?.list?.map {
+                Unsigned.uint(it.number.toLong())
+            }?.toTypedArray() ?: emptyArray<UInteger>()
+            "UInt64" -> member.value?.list?.map {
+                Unsigned.ulong(it.number.toLong())
+            }?.toTypedArray() ?: emptyArray<kotlin.ULong>()
+            "Float" -> member.value?.list?.map { it.number.toFloat() }?.toFloatArray() ?: emptyArray<Float>()
+            "Double" -> member.value?.list?.map { it.number.toDouble() }?.toDoubleArray() ?: emptyArray<Double>()
+            else -> member.getIndexed(Meta.JSON_ARRAY_KEY.asName()).map {
+                memberTypeToOpcUaScalar(it.value, typeName)
+            }.toTypedArray()
+        }
+    }
+
+    override fun getMembers(value: Meta): Map<String, Meta> = value.items.mapKeys { it.toString() }
+}
+
+public fun Variant.toMeta(serializationContext: SerializationContext): Meta = (value as? ExtensionObject)?.let {
+    it.decode(serializationContext) as Meta
+} ?: opcToMeta(value)
+
+//public fun Meta.toVariant(): Variant = if (items.isEmpty()) {
+//    Variant(value?.value)
+//} else {
+//    TODO()
+//}

controls-opcua/src/main/kotlin/space/kscience/controls/opcua/client/OpcUaDevice.kt

@@ -0,0 +1,126 @@
+package space.kscience.controls.opcua.client
+
+import kotlinx.coroutines.future.await
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.runBlocking
+import kotlinx.serialization.json.Json
+import org.eclipse.milo.opcua.sdk.client.OpcUaClient
+import org.eclipse.milo.opcua.stack.core.types.builtin.*
+import org.eclipse.milo.opcua.stack.core.types.enumerated.TimestampsToReturn
+import space.kscience.controls.api.Device
+import space.kscience.dataforge.meta.Meta
+import space.kscience.dataforge.meta.MetaSerializer
+import space.kscience.dataforge.meta.transformations.MetaConverter
+import kotlin.properties.ReadWriteProperty
+import kotlin.reflect.KProperty
+
+
+/**
+ * An OPC-UA device backed by Eclipse Milo client
+ */
+public interface OpcUaDevice : Device {
+    /**
+     * The OPC-UA client initialized on first use
+     */
+    public val client: OpcUaClient
+}
+
+/**
+ * Read OPC-UA value with timestamp
+ * @param T the type of property to read. The value is coerced to it.
+ */
+public suspend inline fun <reified T: Any> OpcUaDevice.readOpcWithTime(
+    nodeId: NodeId,
+    converter: MetaConverter<T>,
+    magAge: Double = 500.0
+): Pair<T, DateTime> {
+    val data = client.readValue(magAge, TimestampsToReturn.Server, nodeId).await()
+    val time = data.serverTime ?: error("No server time provided")
+    val meta: Meta = when (val content = data.value.value) {
+        is T -> return content to time
+        is Meta -> content
+        is ExtensionObject -> content.decode(client.dynamicSerializationContext) as Meta
+        else -> error("Incompatible OPC property value $content")
+    }
+
+    val res: T = converter.metaToObject(meta) ?: error("Meta $meta could not be converted to ${T::class}")
+    return res to time
+}
+
+/**
+ * Read and coerce value from OPC-UA
+ */
+public suspend inline fun <reified T> OpcUaDevice.readOpc(
+    nodeId: NodeId,
+    converter: MetaConverter<T>,
+    magAge: Double = 500.0
+): T {
+    val data: DataValue = client.readValue(magAge, TimestampsToReturn.Neither, nodeId).await()
+
+    val content = data.value.value
+    if(content is T) return  content
+    val meta: Meta = when (content) {
+        is Meta -> content
+        //Always decode string as Json meta
+        is String -> Json.decodeFromString(MetaSerializer, content)
+        is Number -> Meta(content)
+        is Boolean -> Meta(content)
+        //content is ExtensionObject -> (content as ExtensionObject).decode(client.dynamicSerializationContext) as Meta
+        else -> error("Incompatible OPC property value $content")
+    }
+
+    return converter.metaToObject(meta) ?: error("Meta $meta could not be converted to ${T::class}")
+}
+
+public suspend inline fun <reified T> OpcUaDevice.writeOpc(
+    nodeId: NodeId,
+    converter: MetaConverter<T>,
+    value: T
+): StatusCode {
+    val meta = converter.objectToMeta(value)
+    return client.writeValue(nodeId, DataValue(Variant(meta))).await()
+}
+
+
+/**
+ * A device-bound OPC-UA property. Does not trigger device properties change.
+ */
+public inline fun <reified T> OpcUaDevice.opc(
+    nodeId: NodeId,
+    converter: MetaConverter<T>,
+    magAge: Double = 500.0
+): ReadWriteProperty<Any?, T> = object : ReadWriteProperty<Any?, T> {
+    override fun getValue(thisRef: Any?, property: KProperty<*>): T = runBlocking {
+        readOpc(nodeId, converter, magAge)
+    }
+
+    override fun setValue(thisRef: Any?, property: KProperty<*>, value: T) {
+        launch {
+            writeOpc(nodeId, converter, value)
+        }
+    }
+}
+
+/**
+ * Register a mutable OPC-UA based [Double] property in a device spec
+ */
+public fun OpcUaDevice.opcDouble(
+    nodeId: NodeId,
+    magAge: Double = 1.0
+): ReadWriteProperty<Any?, Double> = opc<Double>(nodeId, MetaConverter.double, magAge)
+
+/**
+ * Register a mutable OPC-UA based [Int] property in a device spec
+ */
+public fun OpcUaDevice.opcInt(
+    nodeId: NodeId,
+    magAge: Double = 1.0
+): ReadWriteProperty<Any?, Int> = opc(nodeId, MetaConverter.int, magAge)
+
+/**
+ * Register a mutable OPC-UA based [String] property in a device spec
+ */
+public fun OpcUaDevice.opcString(
+    nodeId: NodeId,
+    magAge: Double = 1.0
+): ReadWriteProperty<Any?, String> = opc(nodeId, MetaConverter.string, magAge)

controls-opcua/src/main/kotlin/space/kscience/controls/opcua/client/OpcUaDeviceBySpec.kt

@@ -0,0 +1,70 @@
+package space.kscience.controls.opcua.client
+
+import org.eclipse.milo.opcua.sdk.client.OpcUaClient
+import org.eclipse.milo.opcua.sdk.client.api.config.OpcUaClientConfigBuilder
+import org.eclipse.milo.opcua.sdk.client.api.identity.UsernameProvider
+import org.eclipse.milo.opcua.stack.core.security.SecurityPolicy
+import space.kscience.controls.api.Device
+import space.kscience.controls.spec.DeviceBySpec
+import space.kscience.controls.spec.DeviceSpec
+import space.kscience.dataforge.context.Context
+import space.kscience.dataforge.context.Global
+import space.kscience.dataforge.meta.*
+
+
+public sealed class MiloIdentity : Scheme()
+
+public class MiloUsername : MiloIdentity() {
+
+    public var username: String by string { error("Username not defined") }
+    public var password: String by string { error("Password not defined") }
+
+    public companion object : SchemeSpec<MiloUsername>(::MiloUsername)
+}
+
+//public class MiloKeyPair : MiloIdentity() {
+//
+//    public companion object : SchemeSpec<MiloUsername>(::MiloUsername)
+//}
+
+public class MiloConfiguration : Scheme() {
+
+    public var endpointUrl: String by string { error("Endpoint url is not defined") }
+
+    public var username: MiloUsername? by specOrNull(MiloUsername)
+
+    public var securityPolicy: SecurityPolicy by enum(SecurityPolicy.None)
+
+    internal fun configureClient(builder: OpcUaClientConfigBuilder) {
+        username?.let {
+            builder.setIdentityProvider(UsernameProvider(it.username, it.password))
+        }
+    }
+
+    public companion object : SchemeSpec<MiloConfiguration>(::MiloConfiguration)
+}
+
+/**
+ * A variant of [DeviceBySpec] that includes OPC-UA client
+ */
+public open class OpcUaDeviceBySpec<D : Device>(
+    spec: DeviceSpec<D>,
+    config: MiloConfiguration,
+    context: Context = Global,
+) : OpcUaDevice, DeviceBySpec<D>(spec, context, config.meta) {
+
+    override val client: OpcUaClient by lazy {
+        context.createOpcUaClient(
+            config.endpointUrl,
+            securityPolicy = config.securityPolicy,
+            opcClientConfig = { config.configureClient(this) }
+        ).apply {
+            connect().get()
+        }
+    }
+
+    override fun close() {
+        client.disconnect()
+        super<DeviceBySpec>.close()
+    }
+}

controls-opcua/src/main/kotlin/space/kscience/controls/opcua/client/miloClient.kt

@@ -0,0 +1,63 @@
+package space.kscience.controls.opcua.client
+
+import org.eclipse.milo.opcua.sdk.client.OpcUaClient
+import org.eclipse.milo.opcua.sdk.client.api.config.OpcUaClientConfigBuilder
+import org.eclipse.milo.opcua.sdk.client.api.identity.AnonymousProvider
+import org.eclipse.milo.opcua.stack.client.security.DefaultClientCertificateValidator
+import org.eclipse.milo.opcua.stack.core.security.DefaultTrustListManager
+import org.eclipse.milo.opcua.stack.core.security.SecurityPolicy
+import org.eclipse.milo.opcua.stack.core.types.builtin.LocalizedText
+import org.eclipse.milo.opcua.stack.core.types.builtin.unsigned.Unsigned.uint
+import org.eclipse.milo.opcua.stack.core.types.structured.EndpointDescription
+import space.kscience.dataforge.context.Context
+import space.kscience.dataforge.context.info
+import space.kscience.dataforge.context.logger
+import java.nio.file.Files
+import java.nio.file.Path
+import java.nio.file.Paths
+import java.util.*
+
+internal fun <T : Any> T?.toOptional(): Optional<T> = Optional.ofNullable(this)
+
+
+internal fun Context.createOpcUaClient(
+    endpointUrl: String, //"opc.tcp://localhost:12686/milo"
+    securityPolicy: SecurityPolicy = SecurityPolicy.Basic256Sha256,
+    endpointFilter: (EndpointDescription?) -> Boolean = { securityPolicy.uri == it?.securityPolicyUri },
+    opcClientConfig: OpcUaClientConfigBuilder.() -> Unit,
+): OpcUaClient {
+
+    val securityTempDir: Path = Paths.get(System.getProperty("java.io.tmpdir"), "client", "security")
+    Files.createDirectories(securityTempDir)
+    check(Files.exists(securityTempDir)) { "Unable to create security dir: $securityTempDir" }
+
+    val pkiDir: Path = securityTempDir.resolve("pki")
+    logger.info { "Milo client security dir: ${securityTempDir.toAbsolutePath()}" }
+    logger.info { "Security pki dir: ${pkiDir.toAbsolutePath()}" }
+
+    //val loader: KeyStoreLoader = KeyStoreLoader().load(securityTempDir)
+    val trustListManager = DefaultTrustListManager(pkiDir.toFile())
+    val certificateValidator = DefaultClientCertificateValidator(trustListManager)
+
+    return OpcUaClient.create(
+        endpointUrl,
+        { endpoints: List<EndpointDescription?> ->
+            endpoints.firstOrNull(endpointFilter).toOptional()
+        }
+    ) { configBuilder: OpcUaClientConfigBuilder ->
+        configBuilder
+            .setApplicationName(LocalizedText.english("Controls-kt"))
+            .setApplicationUri("urn:space.kscience:controls:opcua")
+//            .setKeyPair(loader.getClientKeyPair())
+//            .setCertificate(loader.getClientCertificate())
+//            .setCertificateChain(loader.getClientCertificateChain())
+            .setCertificateValidator(certificateValidator)
+            .setIdentityProvider(AnonymousProvider())
+            .setRequestTimeout(uint(5000))
+            .apply(opcClientConfig)
+            .build()
+    }
+//        .apply {
+//        addSessionInitializer(DataTypeDictionarySessionInitializer(MetaBsdParser()))
+//    }
+}

controls-opcua/src/main/kotlin/space/kscience/controls/opcua/server/DeviceNameSpace.kt

@@ -0,0 +1,197 @@
+package space.kscience.controls.opcua.server
+
+import kotlinx.coroutines.launch
+import kotlinx.datetime.toJavaInstant
+import kotlinx.serialization.json.Json
+import org.eclipse.milo.opcua.sdk.core.AccessLevel
+import org.eclipse.milo.opcua.sdk.core.Reference
+import org.eclipse.milo.opcua.sdk.server.Lifecycle
+import org.eclipse.milo.opcua.sdk.server.OpcUaServer
+import org.eclipse.milo.opcua.sdk.server.api.DataItem
+import org.eclipse.milo.opcua.sdk.server.api.ManagedNamespaceWithLifecycle
+import org.eclipse.milo.opcua.sdk.server.api.MonitoredItem
+import org.eclipse.milo.opcua.sdk.server.nodes.UaFolderNode
+import org.eclipse.milo.opcua.sdk.server.nodes.UaNode
+import org.eclipse.milo.opcua.sdk.server.nodes.UaNodeContext
+import org.eclipse.milo.opcua.sdk.server.nodes.UaVariableNode
+import org.eclipse.milo.opcua.sdk.server.util.SubscriptionModel
+import org.eclipse.milo.opcua.stack.core.AttributeId
+import org.eclipse.milo.opcua.stack.core.Identifiers
+import org.eclipse.milo.opcua.stack.core.types.builtin.DateTime
+import org.eclipse.milo.opcua.stack.core.types.builtin.LocalizedText
+import space.kscience.controls.api.Device
+import space.kscience.controls.api.DeviceHub
+import space.kscience.controls.api.PropertyDescriptor
+import space.kscience.controls.api.onPropertyChange
+import space.kscience.controls.manager.DeviceManager
+import space.kscience.dataforge.meta.Meta
+import space.kscience.dataforge.meta.MetaSerializer
+import space.kscience.dataforge.meta.ValueType
+import space.kscience.dataforge.names.Name
+import space.kscience.dataforge.names.plus
+
+
+public operator fun Device.get(propertyDescriptor: PropertyDescriptor): Meta? = getProperty(propertyDescriptor.name)
+
+public suspend fun Device.read(propertyDescriptor: PropertyDescriptor): Meta = readProperty(propertyDescriptor.name)
+
+/*
+https://github.com/eclipse/milo/blob/master/milo-examples/server-examples/src/main/java/org/eclipse/milo/examples/server/ExampleNamespace.java
+ */
+
+public class DeviceNameSpace(
+    server: OpcUaServer,
+    public val deviceManager: DeviceManager
+) : ManagedNamespaceWithLifecycle(server, NAMESPACE_URI) {
+
+    private val subscription = SubscriptionModel(server, this)
+
+    init {
+        lifecycleManager.addLifecycle(subscription)
+
+        lifecycleManager.addStartupTask {
+            nodeContext.registerHub(deviceManager, Name.EMPTY)
+        }
+
+        lifecycleManager.addLifecycle(object : Lifecycle {
+            override fun startup() {
+                server.addressSpaceManager.register(this@DeviceNameSpace)
+            }
+
+            override fun shutdown() {
+                server.addressSpaceManager.unregister(this@DeviceNameSpace)
+            }
+        })
+    }
+
+    private fun UaFolderNode.registerDeviceNodes(deviceName: Name, device: Device) {
+        val nodes = device.propertyDescriptors.associate { descriptor ->
+            val propertyName = descriptor.name
+
+
+            val node: UaVariableNode = UaVariableNode.UaVariableNodeBuilder(nodeContext).apply {
+                //for now, use DF paths as ids
+                nodeId = newNodeId("${deviceName.tokens.joinToString("/")}/$propertyName")
+                when {
+                    descriptor.readable && descriptor.writable -> {
+                        setAccessLevel(AccessLevel.READ_WRITE)
+                        setUserAccessLevel(AccessLevel.READ_WRITE)
+                    }
+                    descriptor.writable -> {
+                        setAccessLevel(AccessLevel.WRITE_ONLY)
+                        setUserAccessLevel(AccessLevel.WRITE_ONLY)
+                    }
+                    descriptor.readable -> {
+                        setAccessLevel(AccessLevel.READ_ONLY)
+                        setUserAccessLevel(AccessLevel.READ_ONLY)
+                    }
+                    else -> {
+                        setAccessLevel(AccessLevel.NONE)
+                        setUserAccessLevel(AccessLevel.NONE)
+                    }
+                }
+
+                browseName = newQualifiedName(propertyName)
+                displayName = LocalizedText.english(propertyName)
+                dataType = if (descriptor.metaDescriptor.children.isNotEmpty()) {
+                    Identifiers.String
+                } else when (descriptor.metaDescriptor.valueTypes?.first()) {
+                    null, ValueType.STRING, ValueType.NULL -> Identifiers.String
+                    ValueType.NUMBER -> Identifiers.Number
+                    ValueType.BOOLEAN -> Identifiers.Boolean
+                    ValueType.LIST -> Identifiers.ArrayItemType
+                }
+
+
+                setTypeDefinition(Identifiers.BaseDataVariableType)
+            }.build()
+
+
+            device[descriptor]?.toOpc(sourceTime = null, serverTime = null)?.let {
+                node.value = it
+            }
+
+            /**
+             * Subscribe to node value changes
+             */
+            node.addAttributeObserver { _: UaNode, attributeId: AttributeId, value: Any ->
+                if (attributeId == AttributeId.Value) {
+                    val meta: Meta = when (value) {
+                        is Meta -> value
+                        is Boolean -> Meta(value)
+                        is Number -> Meta(value)
+                        is String -> Json.decodeFromString(MetaSerializer, value)
+                        else -> return@addAttributeObserver //TODO("other types not implemented")
+                    }
+                    deviceManager.context.launch {
+                        device.writeProperty(propertyName, meta)
+                    }
+                }
+            }
+
+            nodeManager.addNode(node)
+            addOrganizes(node)
+            propertyName to node
+        }
+
+        //Subscribe on properties updates
+        device.onPropertyChange {
+            nodes[property]?.let { node ->
+                val sourceTime = time?.let { DateTime(it.toJavaInstant()) }
+                node.value = value.toOpc(sourceTime = sourceTime)
+            }
+        }
+        //recursively add sub-devices
+        if (device is DeviceHub) {
+            nodeContext.registerHub(device, deviceName)
+        }
+    }
+
+    private fun UaNodeContext.registerHub(hub: DeviceHub, namePrefix: Name) {
+        hub.devices.forEach { (deviceName, device) ->
+            val tokenAsString = deviceName.toString()
+            val deviceFolder = UaFolderNode(
+                this,
+                newNodeId(tokenAsString),
+                newQualifiedName(tokenAsString),
+                LocalizedText.english(tokenAsString)
+            )
+            deviceFolder.addReference(
+                Reference(
+                    deviceFolder.nodeId,
+                    Identifiers.Organizes,
+                    Identifiers.ObjectsFolder.expanded(),
+                    false
+                )
+            )
+            deviceFolder.registerDeviceNodes(namePrefix + deviceName, device)
+            this.nodeManager.addNode(deviceFolder)
+        }
+    }
+
+    override fun onDataItemsCreated(dataItems: List<DataItem?>?) {
+        subscription.onDataItemsCreated(dataItems)
+    }
+
+    override fun onDataItemsModified(dataItems: List<DataItem?>?) {
+        subscription.onDataItemsModified(dataItems)
+    }
+
+    override fun onDataItemsDeleted(dataItems: List<DataItem?>?) {
+        subscription.onDataItemsDeleted(dataItems)
+    }
+
+    override fun onMonitoringModeChanged(monitoredItems: List<MonitoredItem?>?) {
+        subscription.onMonitoringModeChanged(monitoredItems)
+    }
+
+    public companion object {
+        public const val NAMESPACE_URI: String = "urn:space:kscience:controls:opcua:server"
+    }
+}
+
+/**
+ *  Serve devices from [deviceManager] as OPC-UA
+ */
+public fun OpcUaServer.serveDevices(deviceManager: DeviceManager): DeviceNameSpace =
+    DeviceNameSpace(this, deviceManager).apply { startup() }

controls-opcua/src/main/kotlin/space/kscience/controls/opcua/server/metaToOpc.kt

@@ -0,0 +1,35 @@
+package space.kscience.controls.opcua.server
+
+import kotlinx.serialization.json.Json
+import org.eclipse.milo.opcua.stack.core.types.builtin.DataValue
+import org.eclipse.milo.opcua.stack.core.types.builtin.DateTime
+import org.eclipse.milo.opcua.stack.core.types.builtin.StatusCode
+import org.eclipse.milo.opcua.stack.core.types.builtin.Variant
+import space.kscience.dataforge.meta.*
+import java.time.Instant
+
+/**
+ * Convert Meta to OPC data value using
+ */
+internal fun Meta.toOpc(
+    statusCode: StatusCode = StatusCode.GOOD,
+    sourceTime: DateTime? = null,
+    serverTime: DateTime? = null
+): DataValue {
+    val variant: Variant = if (isLeaf) {
+        when (value?.type) {
+            null, ValueType.NULL -> Variant.NULL_VALUE
+            ValueType.NUMBER -> Variant(value!!.number)
+            ValueType.STRING -> Variant(value!!.string)
+            ValueType.BOOLEAN -> Variant(value!!.boolean)
+            ValueType.LIST -> if (value!!.list.all { it.type == ValueType.NUMBER }) {
+                Variant(value!!.doubleArray.toTypedArray())
+            } else {
+                Variant(value!!.stringList.toTypedArray())
+            }
+        }
+    } else {
+        Variant(Json.encodeToString(MetaSerializer,this))
+    }
+    return DataValue(variant, statusCode, sourceTime,serverTime ?: DateTime(Instant.now()))
+}

controls-opcua/src/main/kotlin/space/kscience/controls/opcua/server/nodeUtils.kt

@@ -0,0 +1,77 @@
+package space.kscience.controls.opcua.server
+
+import org.eclipse.milo.opcua.sdk.core.AccessLevel
+import org.eclipse.milo.opcua.sdk.core.Reference
+import org.eclipse.milo.opcua.sdk.server.nodes.UaNode
+import org.eclipse.milo.opcua.sdk.server.nodes.UaNodeContext
+import org.eclipse.milo.opcua.sdk.server.nodes.UaVariableNode
+import org.eclipse.milo.opcua.stack.core.Identifiers
+import org.eclipse.milo.opcua.stack.core.types.builtin.*
+
+
+internal fun UaNode.inverseReferenceTo(targetNodeId: NodeId, typeId: NodeId) {
+    addReference(
+        Reference(
+            nodeId,
+            typeId,
+            targetNodeId.expanded(),
+            Reference.Direction.INVERSE
+        )
+    )
+}
+
+internal fun NodeId.resolve(child: String): NodeId {
+    val id = this.identifier.toString()
+    return NodeId(this.namespaceIndex, "$id/$child")
+}
+
+
+internal fun UaNodeContext.addVariableNode(
+    parentNodeId: NodeId,
+    name: String,
+    nodeId: NodeId = parentNodeId.resolve(name),
+    dataTypeId: NodeId,
+    value: Any,
+    referenceTypeId: NodeId = Identifiers.HasComponent
+): UaVariableNode {
+
+    val variableNode: UaVariableNode = UaVariableNode.UaVariableNodeBuilder(this).apply {
+        setNodeId(nodeId)
+        setAccessLevel(AccessLevel.toValue(AccessLevel.READ_WRITE))
+        setUserAccessLevel(AccessLevel.toValue(AccessLevel.READ_WRITE))
+        setBrowseName(QualifiedName(parentNodeId.namespaceIndex, name))
+        setDisplayName(LocalizedText.english(name))
+        setDataType(dataTypeId)
+        setTypeDefinition(Identifiers.BaseDataVariableType)
+        setMinimumSamplingInterval(100.0)
+        setValue(DataValue(Variant(value)))
+    }.build()
+
+//    variableNode.filterChain.addFirst(AttributeLoggingFilter())
+
+    nodeManager.addNode(variableNode)
+
+    variableNode.inverseReferenceTo(
+        parentNodeId,
+        referenceTypeId
+    )
+
+    return variableNode
+}
+//
+//fun UaNodeContext.addVariableNode(
+//    parentNodeId: NodeId,
+//    name: String,
+//    nodeId: NodeId = parentNodeId.resolve(name),
+//    dataType: BuiltinDataType = BuiltinDataType.Int32,
+//    referenceTypeId: NodeId = Identifiers.HasComponent
+//): UaVariableNode = addVariableNode(
+//    parentNodeId,
+//    name,
+//    nodeId,
+//    dataType.nodeId,
+//    dataType.defaultValue(),
+//    referenceTypeId
+//)
+
+

controls-opcua/src/main/kotlin/space/kscience/controls/opcua/server/serverUtils.kt

@@ -0,0 +1,28 @@
+package space.kscience.controls.opcua.server
+
+import org.eclipse.milo.opcua.sdk.server.OpcUaServer
+import org.eclipse.milo.opcua.sdk.server.api.config.OpcUaServerConfig
+import org.eclipse.milo.opcua.sdk.server.api.config.OpcUaServerConfigBuilder
+import org.eclipse.milo.opcua.stack.server.EndpointConfiguration
+
+public fun OpcUaServer(block: OpcUaServerConfigBuilder.() -> Unit): OpcUaServer {
+//        .setProductUri(DemoServer.PRODUCT_URI)
+//        .setApplicationUri("${DemoServer.APPLICATION_URI}:$applicationUuid")
+//        .setApplicationName(LocalizedText.english("Eclipse Milo OPC UA Demo Server"))
+//        .setBuildInfo(buildInfo())
+//        .setTrustListManager(trustListManager)
+//        .setCertificateManager(certificateManager)
+//        .setCertificateValidator(certificateValidator)
+//        .setIdentityValidator(identityValidator)
+//        .setEndpoints(endpoints)
+//        .setLimits(ServerLimits)
+
+    val config = OpcUaServerConfig.builder().apply(block)
+
+    return OpcUaServer(config.build())
+}
+
+public fun OpcUaServerConfigBuilder.endpoint(block: EndpointConfiguration.Builder.() -> Unit) {
+    val endpoint = EndpointConfiguration.Builder().apply(block).build()
+    setEndpoints(setOf(endpoint))
+}

controls-opcua/src/test/kotlin/space/kscience/controls/opcua/client/OpcUaClientTest.kt

@@ -0,0 +1,48 @@
+package space.kscience.controls.opcua.client
+
+import kotlinx.coroutines.ExperimentalCoroutinesApi
+import kotlinx.coroutines.test.runTest
+import org.eclipse.milo.opcua.stack.core.types.builtin.NodeId
+import org.junit.jupiter.api.Test
+import space.kscience.controls.spec.DeviceSpec
+import space.kscience.controls.spec.doubleProperty
+import space.kscience.controls.spec.read
+import space.kscience.dataforge.meta.transformations.MetaConverter
+import kotlin.test.Ignore
+
+class OpcUaClientTest {
+    class DemoOpcUaDevice(config: MiloConfiguration) : OpcUaDeviceBySpec<DemoOpcUaDevice>(DemoOpcUaDevice, config) {
+
+        //val randomDouble by opcDouble(NodeId(2, "Dynamic/RandomDouble"))
+
+        suspend fun readRandomDouble() = readOpc(NodeId(2, "Dynamic/RandomDouble"), MetaConverter.double)
+
+
+        companion object : DeviceSpec<DemoOpcUaDevice>() {
+            /**
+             * Build a device. This is not a part of the specification
+             */
+            fun build(): DemoOpcUaDevice {
+                val config = MiloConfiguration {
+                    endpointUrl = "opc.tcp://milo.digitalpetri.com:62541/milo"
+                }
+                return DemoOpcUaDevice(config)
+            }
+
+            val randomDouble by doubleProperty(read = DemoOpcUaDevice::readRandomDouble)
+
+        }
+
+    }
+
+
+    @OptIn(ExperimentalCoroutinesApi::class)
+    @Test
+    @Ignore
+    fun testReadDouble() = runTest {
+        DemoOpcUaDevice.build().use{
+            println(it.read(DemoOpcUaDevice.randomDouble))
+        }
+    }
+
+}

controls-pi/README.md

@@ -0,0 +1,23 @@
+# Module controls-pi
+
+Utils to work with controls-kt on Raspberry pi
+
+## Usage
+
+## Artifact:
+
+The Maven coordinates of this project are `space.kscience:controls-pi:0.2.0`.
+
+**Gradle Kotlin DSL:**
+```kotlin
+repositories {
+    maven("https://repo.kotlin.link")
+    //uncomment to access development builds
+    //maven("https://maven.pkg.jetbrains.space/spc/p/sci/dev")
+    mavenCentral()
+}
+
+dependencies {
+    implementation("space.kscience:controls-pi:0.2.0")
+}
+```

controls-pi/api/controls-pi.api

@@ -0,0 +1,28 @@
+public final class space/kscience/controls/pi/PiPlugin : space/kscience/dataforge/context/AbstractPlugin {
+	public static final field Companion Lspace/kscience/controls/pi/PiPlugin$Companion;
+	public fun <init> ()V
+	public final fun getPorts ()Lspace/kscience/controls/ports/Ports;
+	public fun getTag ()Lspace/kscience/dataforge/context/PluginTag;
+}
+
+public final class space/kscience/controls/pi/PiPlugin$Companion : space/kscience/dataforge/context/PluginFactory {
+	public synthetic fun build (Lspace/kscience/dataforge/context/Context;Lspace/kscience/dataforge/meta/Meta;)Ljava/lang/Object;
+	public fun build (Lspace/kscience/dataforge/context/Context;Lspace/kscience/dataforge/meta/Meta;)Lspace/kscience/controls/pi/PiPlugin;
+	public fun getTag ()Lspace/kscience/dataforge/context/PluginTag;
+}
+
+public final class space/kscience/controls/pi/PiSerialPort : space/kscience/controls/ports/AbstractPort {
+	public static final field Companion Lspace/kscience/controls/pi/PiSerialPort$Companion;
+	public fun <init> (Lspace/kscience/dataforge/context/Context;Lkotlin/coroutines/CoroutineContext;Lkotlin/jvm/functions/Function0;)V
+	public synthetic fun <init> (Lspace/kscience/dataforge/context/Context;Lkotlin/coroutines/CoroutineContext;Lkotlin/jvm/functions/Function0;ILkotlin/jvm/internal/DefaultConstructorMarker;)V
+	public fun close ()V
+	public final fun getSerialBuilder ()Lkotlin/jvm/functions/Function0;
+}
+
+public final class space/kscience/controls/pi/PiSerialPort$Companion : space/kscience/controls/ports/PortFactory {
+	public synthetic fun build (Lspace/kscience/dataforge/context/Context;Lspace/kscience/dataforge/meta/Meta;)Ljava/lang/Object;
+	public fun build (Lspace/kscience/dataforge/context/Context;Lspace/kscience/dataforge/meta/Meta;)Lspace/kscience/controls/ports/Port;
+	public fun getType ()Ljava/lang/String;
+	public final fun open (Lspace/kscience/dataforge/context/Context;Ljava/lang/String;Lkotlin/jvm/functions/Function1;)Lspace/kscience/controls/pi/PiSerialPort;
+}
+

controls-pi/build.gradle.kts

@@ -0,0 +1,16 @@
+plugins {
+    id("space.kscience.gradle.jvm")
+    `maven-publish`
+}
+
+description = """
+    Utils to work with controls-kt on Raspberry pi
+""".trimIndent()
+
+dependencies{
+    api(project(":controls-core"))
+    api("com.pi4j:pi4j-ktx:2.4.0") // Kotlin DSL
+    api("com.pi4j:pi4j-core:2.3.0")
+    api("com.pi4j:pi4j-plugin-raspberrypi:2.3.0")
+    api("com.pi4j:pi4j-plugin-pigpio:2.3.0")
+}

controls-pi/src/main/kotlin/space/kscience/controls/pi/PiPlugin.kt

@@ -0,0 +1,22 @@
+package space.kscience.controls.pi
+
+import space.kscience.controls.ports.Ports
+import space.kscience.dataforge.context.AbstractPlugin
+import space.kscience.dataforge.context.Context
+import space.kscience.dataforge.context.PluginFactory
+import space.kscience.dataforge.context.PluginTag
+import space.kscience.dataforge.meta.Meta
+
+public class PiPlugin : AbstractPlugin() {
+    public val ports: Ports by require(Ports)
+
+    override val tag: PluginTag get() = Companion.tag
+
+    public companion object : PluginFactory<PiPlugin> {
+
+        override val tag: PluginTag = PluginTag("controls.ports.pi", group = PluginTag.DATAFORGE_GROUP)
+
+        override fun build(context: Context, meta: Meta): PiPlugin = PiPlugin()
+
+    }
+}

controls-pi/src/main/kotlin/space/kscience/controls/pi/PiSerialPort.kt

@@ -0,0 +1,75 @@
+package space.kscience.controls.pi
+
+import com.pi4j.Pi4J
+import com.pi4j.io.serial.Baud
+import com.pi4j.io.serial.Serial
+import com.pi4j.io.serial.SerialConfigBuilder
+import com.pi4j.ktx.io.serial
+import kotlinx.coroutines.*
+import space.kscience.controls.ports.AbstractPort
+import space.kscience.controls.ports.Port
+import space.kscience.controls.ports.PortFactory
+import space.kscience.controls.ports.toArray
+import space.kscience.dataforge.context.Context
+import space.kscience.dataforge.context.error
+import space.kscience.dataforge.context.logger
+import space.kscience.dataforge.meta.Meta
+import space.kscience.dataforge.meta.enum
+import space.kscience.dataforge.meta.get
+import space.kscience.dataforge.meta.string
+import java.nio.ByteBuffer
+import kotlin.coroutines.CoroutineContext
+
+public class PiSerialPort(
+    context: Context,
+    coroutineContext: CoroutineContext = context.coroutineContext,
+    public val serialBuilder: () -> Serial,
+) : AbstractPort(context, coroutineContext) {
+
+    private val serial: Serial by lazy { serialBuilder() }
+
+
+    private val listenerJob = this.scope.launch(Dispatchers.IO) {
+        val buffer = ByteBuffer.allocate(1024)
+        while (isActive) {
+            try {
+                val num = serial.read(buffer)
+                if (num > 0) {
+                    receive(buffer.toArray(num))
+                }
+                if (num < 0) cancel("The input channel is exhausted")
+            } catch (ex: Exception) {
+                logger.error(ex) { "Channel read error" }
+                delay(1000)
+            }
+        }
+    }
+
+    override suspend fun write(data: ByteArray): Unit = withContext(Dispatchers.IO) {
+        serial.write(data)
+    }
+
+    override fun close() {
+        listenerJob.cancel()
+        serial.close()
+    }
+
+    public companion object : PortFactory {
+        override val type: String get() = "pi"
+
+        public fun open(context: Context, device: String, block: SerialConfigBuilder.() -> Unit): PiSerialPort =
+            PiSerialPort(context) {
+                Pi4J.newAutoContext().serial(device, block)
+            }
+
+        override fun build(context: Context, meta: Meta): Port = PiSerialPort(context) {
+            val device: String = meta["device"].string ?: error("Device name not defined")
+            val baudRate: Baud = meta["baudRate"].enum<Baud>() ?: Baud._9600
+            Pi4J.newAutoContext().serial(device) {
+                baud8N1(baudRate)
+            }
+        }
+
+    }
+}
+

controls-ports-ktor/README.md

@@ -0,0 +1,23 @@
+# Module controls-ports-ktor
+
+Implementation of byte ports on top os ktor-io asynchronous API
+
+## Usage
+
+## Artifact:
+
+The Maven coordinates of this project are `space.kscience:controls-ports-ktor:0.2.0`.
+
+**Gradle Kotlin DSL:**
+```kotlin
+repositories {
+    maven("https://repo.kotlin.link")
+    //uncomment to access development builds
+    //maven("https://maven.pkg.jetbrains.space/spc/p/sci/dev")
+    mavenCentral()
+}
+
+dependencies {
+    implementation("space.kscience:controls-ports-ktor:0.2.0")
+}
+```

controls-ports-ktor/api/controls-ports-ktor.api

@@ -0,0 +1,47 @@
+public final class space/kscience/controls/ports/KtorPortsPlugin : space/kscience/dataforge/context/AbstractPlugin {
+	public static final field Companion Lspace/kscience/controls/ports/KtorPortsPlugin$Companion;
+	public fun <init> ()V
+	public fun content (Ljava/lang/String;)Ljava/util/Map;
+	public fun getTag ()Lspace/kscience/dataforge/context/PluginTag;
+}
+
+public final class space/kscience/controls/ports/KtorPortsPlugin$Companion : space/kscience/dataforge/context/PluginFactory {
+	public synthetic fun build (Lspace/kscience/dataforge/context/Context;Lspace/kscience/dataforge/meta/Meta;)Ljava/lang/Object;
+	public fun build (Lspace/kscience/dataforge/context/Context;Lspace/kscience/dataforge/meta/Meta;)Lspace/kscience/controls/ports/KtorPortsPlugin;
+	public fun getTag ()Lspace/kscience/dataforge/context/PluginTag;
+}
+
+public final class space/kscience/controls/ports/KtorTcpPort : space/kscience/controls/ports/AbstractPort, java/io/Closeable {
+	public static final field Companion Lspace/kscience/controls/ports/KtorTcpPort$Companion;
+	public fun close ()V
+	public final fun getHost ()Ljava/lang/String;
+	public final fun getPort ()I
+	public fun toString ()Ljava/lang/String;
+}
+
+public final class space/kscience/controls/ports/KtorTcpPort$Companion : space/kscience/controls/ports/PortFactory {
+	public synthetic fun build (Lspace/kscience/dataforge/context/Context;Lspace/kscience/dataforge/meta/Meta;)Ljava/lang/Object;
+	public fun build (Lspace/kscience/dataforge/context/Context;Lspace/kscience/dataforge/meta/Meta;)Lspace/kscience/controls/ports/Port;
+	public fun getType ()Ljava/lang/String;
+	public final fun open (Lspace/kscience/dataforge/context/Context;Ljava/lang/String;ILkotlin/coroutines/CoroutineContext;)Lspace/kscience/controls/ports/KtorTcpPort;
+	public static synthetic fun open$default (Lspace/kscience/controls/ports/KtorTcpPort$Companion;Lspace/kscience/dataforge/context/Context;Ljava/lang/String;ILkotlin/coroutines/CoroutineContext;ILjava/lang/Object;)Lspace/kscience/controls/ports/KtorTcpPort;
+}
+
+public final class space/kscience/controls/ports/KtorUdpPort : space/kscience/controls/ports/AbstractPort, java/io/Closeable {
+	public static final field Companion Lspace/kscience/controls/ports/KtorUdpPort$Companion;
+	public fun close ()V
+	public final fun getLocalHost ()Ljava/lang/String;
+	public final fun getLocalPort ()Ljava/lang/Integer;
+	public final fun getRemoteHost ()Ljava/lang/String;
+	public final fun getRemotePort ()I
+	public fun toString ()Ljava/lang/String;
+}
+
+public final class space/kscience/controls/ports/KtorUdpPort$Companion : space/kscience/controls/ports/PortFactory {
+	public synthetic fun build (Lspace/kscience/dataforge/context/Context;Lspace/kscience/dataforge/meta/Meta;)Ljava/lang/Object;
+	public fun build (Lspace/kscience/dataforge/context/Context;Lspace/kscience/dataforge/meta/Meta;)Lspace/kscience/controls/ports/Port;
+	public fun getType ()Ljava/lang/String;
+	public final fun open (Lspace/kscience/dataforge/context/Context;Ljava/lang/String;ILjava/lang/Integer;Ljava/lang/String;Lkotlin/coroutines/CoroutineContext;)Lspace/kscience/controls/ports/KtorUdpPort;
+	public static synthetic fun open$default (Lspace/kscience/controls/ports/KtorUdpPort$Companion;Lspace/kscience/dataforge/context/Context;Ljava/lang/String;ILjava/lang/Integer;Ljava/lang/String;Lkotlin/coroutines/CoroutineContext;ILjava/lang/Object;)Lspace/kscience/controls/ports/KtorUdpPort;
+}
+

controls-ports-ktor/build.gradle.kts

@@ -0,0 +1,21 @@
+import space.kscience.gradle.Maturity
+
+plugins {
+    id("space.kscience.gradle.jvm")
+    `maven-publish`
+}
+
+description = """
+    Implementation of byte ports on top os ktor-io asynchronous API
+""".trimIndent()
+
+val ktorVersion: String by rootProject.extra
+
+dependencies {
+    api(projects.controlsCore)
+    api("io.ktor:ktor-network:$ktorVersion")
+}
+
+readme{
+    maturity = Maturity.PROTOTYPE
+}

controls-ports-ktor/src/main/kotlin/space/kscience/controls/ports/KtorPortsPlugin.kt

@@ -0,0 +1,28 @@
+package space.kscience.controls.ports
+
+import space.kscience.dataforge.context.AbstractPlugin
+import space.kscience.dataforge.context.Context
+import space.kscience.dataforge.context.PluginFactory
+import space.kscience.dataforge.context.PluginTag
+import space.kscience.dataforge.meta.Meta
+import space.kscience.dataforge.names.Name
+import space.kscience.dataforge.names.asName
+
+public class KtorPortsPlugin : AbstractPlugin() {
+
+    override val tag: PluginTag get() = Companion.tag
+
+    override fun content(target: String): Map<Name, Any> = when (target) {
+        PortFactory.TYPE -> mapOf("tcp".asName() to KtorTcpPort, "udp".asName() to KtorUdpPort)
+        else -> emptyMap()
+    }
+
+    public companion object : PluginFactory<KtorPortsPlugin> {
+
+        override val tag: PluginTag = PluginTag("controls.ports.ktor", group = PluginTag.DATAFORGE_GROUP)
+
+        override fun build(context: Context, meta: Meta): KtorPortsPlugin = KtorPortsPlugin()
+
+    }
+
+}

controls-ports-ktor/src/main/kotlin/space/kscience/controls/ports/KtorTcpPort.kt

@@ -1,22 +1,21 @@
-package hep.dataforge.control.ports
+package space.kscience.controls.ports
 
-import hep.dataforge.context.Context
-import hep.dataforge.meta.Meta
-import hep.dataforge.meta.get
-import hep.dataforge.meta.int
-import hep.dataforge.meta.string
 import io.ktor.network.selector.ActorSelectorManager
 import io.ktor.network.sockets.aSocket
 import io.ktor.network.sockets.openReadChannel
 import io.ktor.network.sockets.openWriteChannel
-import io.ktor.util.KtorExperimentalAPI
 import io.ktor.utils.io.consumeEachBufferRange
+import io.ktor.utils.io.core.Closeable
 import io.ktor.utils.io.writeAvailable
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.async
 import kotlinx.coroutines.isActive
 import kotlinx.coroutines.launch
-import java.net.InetSocketAddress
+import space.kscience.dataforge.context.Context
+import space.kscience.dataforge.meta.Meta
+import space.kscience.dataforge.meta.get
+import space.kscience.dataforge.meta.int
+import space.kscience.dataforge.meta.string
 import kotlin.coroutines.CoroutineContext
 
 public class KtorTcpPort internal constructor(
@@ -24,13 +23,12 @@ public class KtorTcpPort internal constructor(
     public val host: String,
     public val port: Int,
     coroutineContext: CoroutineContext = context.coroutineContext,
-) : AbstractPort(context, coroutineContext), AutoCloseable {
+) : AbstractPort(context, coroutineContext), Closeable {
 
     override fun toString(): String = "port[tcp:$host:$port]"
 
-    @OptIn(KtorExperimentalAPI::class)
     private val futureSocket = scope.async {
-        aSocket(ActorSelectorManager(Dispatchers.IO)).tcp().connect(InetSocketAddress(host, port))
+        aSocket(ActorSelectorManager(Dispatchers.IO)).tcp().connect(host, port)
     }
 
     private val writeChannel = scope.async {
@@ -39,7 +37,7 @@ public class KtorTcpPort internal constructor(
 
     private val listenerJob = scope.launch {
         val input = futureSocket.await().openReadChannel()
-        input.consumeEachBufferRange { buffer, last ->
+        input.consumeEachBufferRange { buffer, _ ->
             val array = ByteArray(buffer.remaining())
             buffer.get(array)
             receive(array)
@@ -57,7 +55,10 @@ public class KtorTcpPort internal constructor(
         super.close()
     }
 
-    public companion object: PortFactory {
+    public companion object : PortFactory {
+
+        override val type: String = "tcp"
+
         public fun open(
             context: Context,
             host: String,
@@ -67,7 +68,7 @@ public class KtorTcpPort internal constructor(
             return KtorTcpPort(context, host, port, coroutineContext)
         }
 
-        override fun invoke(meta: Meta, context: Context): Port {
+        override fun build(context: Context, meta: Meta): Port {
             val host = meta["host"].string ?: "localhost"
             val port = meta["port"].int ?: error("Port value for TCP port is not defined in $meta")
             return open(context, host, port)

controls-ports-ktor/src/main/kotlin/space/kscience/controls/ports/KtorUdpPort.kt

@@ -0,0 +1,87 @@
+package space.kscience.controls.ports
+
+import io.ktor.network.selector.ActorSelectorManager
+import io.ktor.network.sockets.InetSocketAddress
+import io.ktor.network.sockets.aSocket
+import io.ktor.network.sockets.openReadChannel
+import io.ktor.network.sockets.openWriteChannel
+import io.ktor.utils.io.consumeEachBufferRange
+import io.ktor.utils.io.core.Closeable
+import io.ktor.utils.io.writeAvailable
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.async
+import kotlinx.coroutines.isActive
+import kotlinx.coroutines.launch
+import space.kscience.dataforge.context.Context
+import space.kscience.dataforge.meta.Meta
+import space.kscience.dataforge.meta.int
+import space.kscience.dataforge.meta.number
+import space.kscience.dataforge.meta.string
+import kotlin.coroutines.CoroutineContext
+
+public class KtorUdpPort internal constructor(
+    context: Context,
+    public val remoteHost: String,
+    public val remotePort: Int,
+    public val localPort: Int? = null,
+    public val localHost: String = "localhost",
+    coroutineContext: CoroutineContext = context.coroutineContext,
+) : AbstractPort(context, coroutineContext), Closeable {
+
+    override fun toString(): String = "port[udp:$remoteHost:$remotePort]"
+
+    private val futureSocket = scope.async {
+        aSocket(ActorSelectorManager(Dispatchers.IO)).udp().connect(
+            remoteAddress = InetSocketAddress(remoteHost, remotePort),
+            localAddress = localPort?.let { InetSocketAddress(localHost, localPort) }
+        )
+    }
+
+    private val writeChannel = scope.async {
+        futureSocket.await().openWriteChannel(true)
+    }
+
+    private val listenerJob = scope.launch {
+        val input = futureSocket.await().openReadChannel()
+        input.consumeEachBufferRange { buffer, _ ->
+            val array = ByteArray(buffer.remaining())
+            buffer.get(array)
+            receive(array)
+            isActive
+        }
+    }
+
+    override suspend fun write(data: ByteArray) {
+        writeChannel.await().writeAvailable(data)
+    }
+
+    override fun close() {
+        listenerJob.cancel()
+        futureSocket.cancel()
+        super.close()
+    }
+
+    public companion object : PortFactory {
+
+        override val type: String = "udp"
+
+        public fun open(
+            context: Context,
+            remoteHost: String,
+            remotePort: Int,
+            localPort: Int? = null,
+            localHost: String = "localhost",
+            coroutineContext: CoroutineContext = context.coroutineContext,
+        ): KtorUdpPort {
+            return KtorUdpPort(context, remoteHost, remotePort, localPort, localHost, coroutineContext)
+        }
+
+        override fun build(context: Context, meta: Meta): Port {
+            val remoteHost by meta.string { error("Remote host is not specified") }
+            val remotePort by meta.number { error("Remote port is not specified") }
+            val localHost: String? by meta.string()
+            val localPort: Int? by meta.int()
+            return open(context, remoteHost, remotePort.toInt(), localPort, localHost ?: "localhost")
+        }
+    }
+}

controls-serial/README.md

@@ -0,0 +1,23 @@
+# Module controls-serial
+
+Implementation of direct serial port communication with JSerialComm
+
+## Usage
+
+## Artifact:
+
+The Maven coordinates of this project are `space.kscience:controls-serial:0.2.0`.
+
+**Gradle Kotlin DSL:**
+```kotlin
+repositories {
+    maven("https://repo.kotlin.link")
+    //uncomment to access development builds
+    //maven("https://maven.pkg.jetbrains.space/spc/p/sci/dev")
+    mavenCentral()
+}
+
+dependencies {
+    implementation("space.kscience:controls-serial:0.2.0")
+}
+```

controls-serial/api/controls-serial.api

@@ -0,0 +1,29 @@
+public final class space/kscience/controls/serial/JSerialCommPort : space/kscience/controls/ports/AbstractPort {
+	public static final field Companion Lspace/kscience/controls/serial/JSerialCommPort$Companion;
+	public fun <init> (Lspace/kscience/dataforge/context/Context;Lcom/fazecast/jSerialComm/SerialPort;Lkotlin/coroutines/CoroutineContext;)V
+	public synthetic fun <init> (Lspace/kscience/dataforge/context/Context;Lcom/fazecast/jSerialComm/SerialPort;Lkotlin/coroutines/CoroutineContext;ILkotlin/jvm/internal/DefaultConstructorMarker;)V
+	public fun close ()V
+	public fun toString ()Ljava/lang/String;
+}
+
+public final class space/kscience/controls/serial/JSerialCommPort$Companion : space/kscience/controls/ports/PortFactory {
+	public synthetic fun build (Lspace/kscience/dataforge/context/Context;Lspace/kscience/dataforge/meta/Meta;)Ljava/lang/Object;
+	public fun build (Lspace/kscience/dataforge/context/Context;Lspace/kscience/dataforge/meta/Meta;)Lspace/kscience/controls/ports/Port;
+	public fun getType ()Ljava/lang/String;
+	public final fun open (Lspace/kscience/dataforge/context/Context;Ljava/lang/String;IIIILkotlin/coroutines/CoroutineContext;)Lspace/kscience/controls/serial/JSerialCommPort;
+	public static synthetic fun open$default (Lspace/kscience/controls/serial/JSerialCommPort$Companion;Lspace/kscience/dataforge/context/Context;Ljava/lang/String;IIIILkotlin/coroutines/CoroutineContext;ILjava/lang/Object;)Lspace/kscience/controls/serial/JSerialCommPort;
+}
+
+public final class space/kscience/controls/serial/SerialPortPlugin : space/kscience/dataforge/context/AbstractPlugin {
+	public static final field Companion Lspace/kscience/controls/serial/SerialPortPlugin$Companion;
+	public fun <init> ()V
+	public fun content (Ljava/lang/String;)Ljava/util/Map;
+	public fun getTag ()Lspace/kscience/dataforge/context/PluginTag;
+}
+
+public final class space/kscience/controls/serial/SerialPortPlugin$Companion : space/kscience/dataforge/context/PluginFactory {
+	public synthetic fun build (Lspace/kscience/dataforge/context/Context;Lspace/kscience/dataforge/meta/Meta;)Ljava/lang/Object;
+	public fun build (Lspace/kscience/dataforge/context/Context;Lspace/kscience/dataforge/meta/Meta;)Lspace/kscience/controls/serial/SerialPortPlugin;
+	public fun getTag ()Lspace/kscience/dataforge/context/PluginTag;
+}
+

controls-serial/build.gradle.kts

@@ -0,0 +1,17 @@
+import space.kscience.gradle.Maturity
+
+plugins {
+    id("space.kscience.gradle.jvm")
+    `maven-publish`
+}
+
+description = "Implementation of direct serial port communication with JSerialComm"
+
+dependencies{
+    api(project(":controls-core"))
+    implementation("com.fazecast:jSerialComm:2.10.3")
+}
+
+readme{
+    maturity = Maturity.EXPERIMENTAL
+}

controls-serial/src/main/kotlin/space/kscience/controls/serial/JSerialCommPort.kt

@@ -0,0 +1,87 @@
+package space.kscience.controls.serial
+
+import com.fazecast.jSerialComm.SerialPort
+import com.fazecast.jSerialComm.SerialPortDataListener
+import com.fazecast.jSerialComm.SerialPortEvent
+import kotlinx.coroutines.launch
+import space.kscience.controls.ports.AbstractPort
+import space.kscience.controls.ports.Port
+import space.kscience.controls.ports.PortFactory
+import space.kscience.dataforge.context.Context
+import space.kscience.dataforge.meta.Meta
+import space.kscience.dataforge.meta.int
+import space.kscience.dataforge.meta.string
+import kotlin.coroutines.CoroutineContext
+
+/**
+ * A port based on JSerialComm
+ */
+public class JSerialCommPort(
+    context: Context,
+    private val comPort: SerialPort,
+    coroutineContext: CoroutineContext = context.coroutineContext,
+) : AbstractPort(context, coroutineContext) {
+
+    override fun toString(): String = "port[${comPort.descriptivePortName}]"
+
+    private val serialPortListener = object : SerialPortDataListener {
+        override fun getListeningEvents(): Int = SerialPort.LISTENING_EVENT_DATA_AVAILABLE
+
+        override fun serialEvent(event: SerialPortEvent) {
+            if (event.eventType == SerialPort.LISTENING_EVENT_DATA_AVAILABLE) {
+                scope.launch { receive(event.receivedData) }
+            }
+        }
+    }
+
+    init {
+        comPort.addDataListener(serialPortListener)
+    }
+
+    override suspend fun write(data: ByteArray) {
+        comPort.writeBytes(data, data.size)
+    }
+
+    override fun close() {
+        comPort.removeDataListener()
+        if (comPort.isOpen) {
+            comPort.closePort()
+        }
+        super.close()
+    }
+
+    public companion object : PortFactory {
+
+        override val type: String = "com"
+
+
+        /**
+         * Construct ComPort with given parameters
+         */
+        public fun open(
+            context: Context,
+            portName: String,
+            baudRate: Int = 9600,
+            dataBits: Int = 8,
+            stopBits: Int = SerialPort.ONE_STOP_BIT,
+            parity: Int = SerialPort.NO_PARITY,
+            coroutineContext: CoroutineContext = context.coroutineContext,
+        ): JSerialCommPort {
+            val serialPort = SerialPort.getCommPort(portName).apply {
+                setComPortParameters(baudRate, dataBits, stopBits, parity)
+                openPort()
+            }
+            return JSerialCommPort(context, serialPort, coroutineContext)
+        }
+
+        override fun build(context: Context, meta: Meta): Port {
+            val name by meta.string { error("Serial port name not defined") }
+            val baudRate by meta.int(9600)
+            val dataBits by meta.int(8)
+            val stopBits by meta.int(SerialPort.ONE_STOP_BIT)
+            val parity by meta.int(SerialPort.NO_PARITY)
+            return open(context, name, baudRate, dataBits, stopBits, parity)
+        }
+    }
+
+}

controls-serial/src/main/kotlin/space/kscience/controls/serial/SerialPortPlugin.kt

@@ -0,0 +1,28 @@
+package space.kscience.controls.serial
+
+import space.kscience.controls.ports.PortFactory
+import space.kscience.dataforge.context.AbstractPlugin
+import space.kscience.dataforge.context.Context
+import space.kscience.dataforge.context.PluginFactory
+import space.kscience.dataforge.context.PluginTag
+import space.kscience.dataforge.meta.Meta
+import space.kscience.dataforge.names.Name
+
+public class SerialPortPlugin : AbstractPlugin() {
+
+    override val tag: PluginTag get() = Companion.tag
+
+    override fun content(target: String): Map<Name, Any> = when(target){
+        PortFactory.TYPE -> mapOf(Name.EMPTY to JSerialCommPort)
+        else -> emptyMap()
+    }
+
+    public companion object : PluginFactory<SerialPortPlugin> {
+
+        override val tag: PluginTag = PluginTag("controls.ports.serial", group = PluginTag.DATAFORGE_GROUP)
+
+        override fun build(context: Context, meta: Meta): SerialPortPlugin = SerialPortPlugin()
+
+    }
+
+}

controls-server/README.md

@@ -0,0 +1,23 @@
+# Module controls-server
+
+A combined Magix event loop server with web server for visualization.
+
+## Usage
+
+## Artifact:
+
+The Maven coordinates of this project are `space.kscience:controls-server:0.2.0`.
+
+**Gradle Kotlin DSL:**
+```kotlin
+repositories {
+    maven("https://repo.kotlin.link")
+    //uncomment to access development builds
+    //maven("https://maven.pkg.jetbrains.space/spc/p/sci/dev")
+    mavenCentral()
+}
+
+dependencies {
+    implementation("space.kscience:controls-server:0.2.0")
+}
+```

controls-server/api/controls-server.api

@@ -0,0 +1,9 @@
+public final class space/kscience/controls/server/DeviceWebServerKt {
+	public static final fun deviceManagerModule (Lio/ktor/server/application/Application;Lspace/kscience/controls/manager/DeviceManager;[Lspace/kscience/magix/api/MagixFlowPlugin;Ljava/util/Collection;Ljava/lang/String;I)V
+	public static synthetic fun deviceManagerModule$default (Lio/ktor/server/application/Application;Lspace/kscience/controls/manager/DeviceManager;[Lspace/kscience/magix/api/MagixFlowPlugin;Ljava/util/Collection;Ljava/lang/String;IILjava/lang/Object;)V
+	public static final fun getWEB_SERVER_TARGET ()Lspace/kscience/dataforge/names/Name;
+	public static final fun startDeviceServer (Lkotlinx/coroutines/CoroutineScope;Lspace/kscience/controls/manager/DeviceManager;ILjava/lang/String;)Lio/ktor/server/engine/ApplicationEngine;
+	public static synthetic fun startDeviceServer$default (Lkotlinx/coroutines/CoroutineScope;Lspace/kscience/controls/manager/DeviceManager;ILjava/lang/String;ILjava/lang/Object;)Lio/ktor/server/engine/ApplicationEngine;
+	public static final fun whenStarted (Lio/ktor/server/engine/ApplicationEngine;Lkotlin/jvm/functions/Function1;)V
+}
+

controls-server/build.gradle.kts

@@ -0,0 +1,29 @@
+import space.kscience.gradle.Maturity
+
+plugins {
+    id("space.kscience.gradle.jvm")
+    `maven-publish`
+}
+
+description = """
+   A combined Magix event loop server with web server for visualization.
+""".trimIndent()
+
+val dataforgeVersion: String by rootProject.extra
+val ktorVersion: String by rootProject.extra
+
+dependencies {
+    implementation(projects.controlsCore)
+    implementation(projects.controlsPortsKtor)
+    implementation(projects.magix.magixServer)
+    implementation("io.ktor:ktor-server-cio:$ktorVersion")
+    implementation("io.ktor:ktor-server-websockets:$ktorVersion")
+    implementation("io.ktor:ktor-server-content-negotiation:$ktorVersion")
+    implementation("io.ktor:ktor-serialization-kotlinx-json:$ktorVersion")
+    implementation("io.ktor:ktor-server-html-builder:$ktorVersion")
+    implementation("io.ktor:ktor-server-status-pages:$ktorVersion")
+}
+
+readme{
+    maturity = Maturity.PROTOTYPE
+}

controls-server/src/main/kotlin/space/kscience/controls/server/deviceWebServer.kt

@@ -0,0 +1,221 @@
+package space.kscience.controls.server
+
+
+import io.ktor.http.HttpStatusCode
+import io.ktor.server.application.*
+import io.ktor.server.cio.CIO
+import io.ktor.server.engine.ApplicationEngine
+import io.ktor.server.engine.embeddedServer
+import io.ktor.server.html.respondHtml
+import io.ktor.server.plugins.statuspages.StatusPages
+import io.ktor.server.request.receiveText
+import io.ktor.server.response.respond
+import io.ktor.server.response.respondRedirect
+import io.ktor.server.response.respondText
+import io.ktor.server.routing.get
+import io.ktor.server.routing.post
+import io.ktor.server.routing.route
+import io.ktor.server.routing.routing
+import io.ktor.server.util.getValue
+import io.ktor.server.websocket.WebSockets
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.flow.MutableSharedFlow
+import kotlinx.html.*
+import kotlinx.serialization.encodeToString
+import kotlinx.serialization.json.Json
+import kotlinx.serialization.json.buildJsonArray
+import kotlinx.serialization.json.encodeToJsonElement
+import kotlinx.serialization.json.put
+import space.kscience.controls.api.DeviceMessage
+import space.kscience.controls.api.PropertyGetMessage
+import space.kscience.controls.api.PropertySetMessage
+import space.kscience.controls.api.getOrNull
+import space.kscience.controls.manager.DeviceManager
+import space.kscience.controls.manager.respondHubMessage
+import space.kscience.dataforge.meta.toMeta
+import space.kscience.dataforge.names.Name
+import space.kscience.dataforge.names.asName
+import space.kscience.magix.api.MagixEndpoint
+import space.kscience.magix.api.MagixFlowPlugin
+import space.kscience.magix.api.MagixMessage
+import space.kscience.magix.server.magixModule
+
+
+
+private fun Application.deviceServerModule(manager: DeviceManager) {
+    install(StatusPages) {
+        exception<IllegalArgumentException> { call, cause ->
+            call.respond(HttpStatusCode.BadRequest, cause.message ?: "")
+        }
+    }
+    deviceManagerModule(manager)
+    routing {
+        get("/") {
+            call.respondRedirect("/dashboard")
+        }
+    }
+}
+
+/**
+ * Create and start a web server for several devices
+ */
+public fun CoroutineScope.startDeviceServer(
+    manager: DeviceManager,
+    port: Int = MagixEndpoint.DEFAULT_MAGIX_HTTP_PORT,
+    host: String = "localhost",
+): ApplicationEngine = embeddedServer(CIO, port, host, module = { deviceServerModule(manager) }).start()
+
+public fun ApplicationEngine.whenStarted(callback: Application.() -> Unit) {
+    environment.monitor.subscribe(ApplicationStarted, callback)
+}
+
+
+public val WEB_SERVER_TARGET: Name = "@webServer".asName()
+
+public fun Application.deviceManagerModule(
+    manager: DeviceManager,
+    vararg plugins: MagixFlowPlugin,
+    deviceNames: Collection<String> = manager.devices.keys.map { it.toString() },
+    route: String = "/",
+    buffer: Int = 100,
+) {
+    if (pluginOrNull(WebSockets) == null) {
+        install(WebSockets)
+    }
+
+//    if (pluginOrNull(CORS) == null) {
+//        install(CORS) {
+//            anyHost()
+//        }
+//    }
+
+    routing {
+        route(route) {
+            get("dashboard") {
+                call.respondHtml {
+                    head {
+                        title("Device server dashboard")
+                    }
+                    body {
+                        h1 {
+                            +"Device server dashboard"
+                        }
+                        deviceNames.forEach { deviceName ->
+                            val device =
+                                manager.getOrNull(deviceName)
+                                    ?: error("The device with name $deviceName not found in $manager")
+                            div {
+                                id = deviceName
+                                h2 { +deviceName }
+                                h3 { +"Properties" }
+                                ul {
+                                    device.propertyDescriptors.forEach { property ->
+                                        li {
+                                            a(href = "../$deviceName/${property.name}/get") { +"${property.name}: " }
+                                            code {
+                                                +Json.encodeToString(property)
+                                            }
+                                        }
+                                    }
+                                }
+                                h3 { +"Actions" }
+                                ul {
+                                    device.actionDescriptors.forEach { action ->
+                                        li {
+                                            +("${action.name}: ")
+                                            code {
+                                                +Json.encodeToString(action)
+                                            }
+                                        }
+                                    }
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+
+            get("list") {
+                call.respondJson {
+                    manager.devices.forEach { (name, device) ->
+                        put("target", name.toString())
+                        put("properties", buildJsonArray {
+                            device.propertyDescriptors.forEach { descriptor ->
+                                add(Json.encodeToJsonElement(descriptor))
+                            }
+                        })
+                        put("actions", buildJsonArray {
+                            device.actionDescriptors.forEach { actionDescriptor ->
+                                add(Json.encodeToJsonElement(actionDescriptor))
+                            }
+                        })
+                    }
+                }
+            }
+
+            post("message") {
+                val body = call.receiveText()
+                val request: DeviceMessage = MagixEndpoint.magixJson.decodeFromString(DeviceMessage.serializer(), body)
+                val response = manager.respondHubMessage(request)
+                if (response != null) {
+                    call.respondMessage(response)
+                } else {
+                    call.respondText("No response")
+                }
+            }
+
+            route("{target}") {
+                //global route for the device
+
+                route("{property}") {
+                    get("get") {
+                        val target: String by call.parameters
+                        val property: String by call.parameters
+                        val request = PropertyGetMessage(
+                            sourceDevice = WEB_SERVER_TARGET,
+                            targetDevice = Name.parse(target),
+                            property = property,
+                        )
+
+                        val response = manager.respondHubMessage(request)
+                        if (response != null) {
+                            call.respondMessage(response)
+                        } else {
+                            call.respond(HttpStatusCode.InternalServerError)
+                        }
+                    }
+                    post("set") {
+                        val target: String by call.parameters
+                        val property: String by call.parameters
+                        val body = call.receiveText()
+                        val json = Json.parseToJsonElement(body)
+
+                        val request = PropertySetMessage(
+                            sourceDevice = WEB_SERVER_TARGET,
+                            targetDevice = Name.parse(target),
+                            property = property,
+                            value = json.toMeta()
+                        )
+
+                        val response = manager.respondHubMessage(request)
+                        if (response != null) {
+                            call.respondMessage(response)
+                        } else {
+                            call.respond(HttpStatusCode.InternalServerError)
+                        }
+                    }
+                }
+            }
+        }
+    }
+
+    val magixFlow = MutableSharedFlow<MagixMessage>(
+        buffer,
+        extraBufferCapacity = buffer
+    )
+
+    plugins.forEach {
+        it.start(this, magixFlow)
+    }
+    magixModule(magixFlow)
+}

controls-server/src/main/kotlin/space/kscience/controls/server/responses.kt

@@ -0,0 +1,31 @@
+package space.kscience.controls.server
+
+import io.ktor.http.ContentType
+import io.ktor.server.application.ApplicationCall
+import io.ktor.server.response.respondText
+import kotlinx.serialization.json.JsonObjectBuilder
+import kotlinx.serialization.json.buildJsonObject
+import space.kscience.controls.api.DeviceMessage
+import space.kscience.magix.api.MagixEndpoint
+
+
+//internal fun Frame.toEnvelope(): Envelope {
+//    return data.asBinary().readWith(TaggedEnvelopeFormat)
+//}
+//
+//internal fun Envelope.toFrame(): Frame {
+//    val data = buildByteArray {
+//        writeWith(TaggedEnvelopeFormat, this@toFrame)
+//    }
+//    return Frame.Binary(false, data)
+//}
+
+internal suspend fun ApplicationCall.respondJson(builder: JsonObjectBuilder.() -> Unit) {
+    val json = buildJsonObject(builder)
+    respondText(json.toString(), contentType = ContentType.Application.Json)
+}
+
+internal suspend fun ApplicationCall.respondMessage(message: DeviceMessage): Unit = respondText(
+    MagixEndpoint.magixJson.encodeToString(DeviceMessage.serializer(), message),
+    contentType = ContentType.Application.Json
+)

controls-storage/README.md

@@ -0,0 +1,23 @@
+# Module controls-storage
+
+An API for stand-alone Controls-kt device or a hub.
+
+## Usage
+
+## Artifact:
+
+The Maven coordinates of this project are `space.kscience:controls-storage:0.2.0`.
+
+**Gradle Kotlin DSL:**
+```kotlin
+repositories {
+    maven("https://repo.kotlin.link")
+    //uncomment to access development builds
+    //maven("https://maven.pkg.jetbrains.space/spc/p/sci/dev")
+    mavenCentral()
+}
+
+dependencies {
+    implementation("space.kscience:controls-storage:0.2.0")
+}
+```

controls-storage/build.gradle.kts

@@ -0,0 +1,27 @@
+plugins {
+    id("space.kscience.gradle.mpp")
+    `maven-publish`
+}
+
+val dataforgeVersion: String by rootProject.extra
+
+description = """
+    An API for stand-alone Controls-kt device or a hub.
+""".trimIndent()
+
+kscience{
+    jvm()
+    js()
+    dependencies {
+        api(projects.controlsCore)
+    }
+    dependencies(jvmMain){
+        api(projects.magix.magixApi)
+        api(projects.controlsMagix)
+        api(projects.magix.magixServer)
+    }
+}
+
+readme{
+    maturity = space.kscience.gradle.Maturity.PROTOTYPE
+}

controls-storage/controls-xodus/README.md

@@ -0,0 +1,23 @@
+# Module controls-xodus
+
+An implementation of controls-storage on top of JetBrains Xodus.
+
+## Usage
+
+## Artifact:
+
+The Maven coordinates of this project are `space.kscience:controls-xodus:0.2.0`.
+
+**Gradle Kotlin DSL:**
+```kotlin
+repositories {
+    maven("https://repo.kotlin.link")
+    //uncomment to access development builds
+    //maven("https://maven.pkg.jetbrains.space/spc/p/sci/dev")
+    mavenCentral()
+}
+
+dependencies {
+    implementation("space.kscience:controls-xodus:0.2.0")
+}
+```

controls-storage/controls-xodus/build.gradle.kts

@@ -0,0 +1,23 @@
+plugins {
+    id("space.kscience.gradle.jvm")
+    `maven-publish`
+}
+
+val xodusVersion: String by rootProject.extra
+
+description = """
+    An implementation of controls-storage on top of JetBrains Xodus.
+""".trimIndent()
+
+dependencies {
+    api(projects.controlsStorage)
+    implementation("org.jetbrains.xodus:xodus-entity-store:$xodusVersion")
+//    implementation("org.jetbrains.xodus:xodus-environment:$xodusVersion")
+//    implementation("org.jetbrains.xodus:xodus-vfs:$xodusVersion")
+
+    testImplementation(spclibs.kotlinx.coroutines.test)
+}
+
+readme{
+    maturity = space.kscience.gradle.Maturity.PROTOTYPE
+}

controls-storage/controls-xodus/src/main/kotlin/space/kscience/controls/xodus/XodusDeviceMessageStorage.kt

@@ -0,0 +1,139 @@
+package space.kscience.controls.xodus
+
+import jetbrains.exodus.entitystore.Entity
+import jetbrains.exodus.entitystore.PersistentEntityStore
+import jetbrains.exodus.entitystore.PersistentEntityStores
+import jetbrains.exodus.entitystore.StoreTransaction
+import kotlinx.datetime.Instant
+import kotlinx.serialization.ExperimentalSerializationApi
+import kotlinx.serialization.descriptors.serialDescriptor
+import kotlinx.serialization.encodeToString
+import kotlinx.serialization.json.Json
+import kotlinx.serialization.json.jsonObject
+import kotlinx.serialization.json.jsonPrimitive
+import space.kscience.controls.api.DeviceMessage
+import space.kscience.controls.storage.DeviceMessageStorage
+import space.kscience.dataforge.context.Context
+import space.kscience.dataforge.context.Factory
+import space.kscience.dataforge.context.request
+import space.kscience.dataforge.io.IOPlugin
+import space.kscience.dataforge.io.workDirectory
+import space.kscience.dataforge.meta.Meta
+import space.kscience.dataforge.meta.get
+import space.kscience.dataforge.meta.string
+import space.kscience.dataforge.misc.DFExperimental
+import space.kscience.dataforge.names.Name
+import space.kscience.dataforge.names.matches
+import space.kscience.dataforge.names.parseAsName
+
+
+internal fun StoreTransaction.writeMessage(message: DeviceMessage): Unit {
+    val entity: Entity = newEntity(XodusDeviceMessageStorage.DEVICE_MESSAGE_ENTITY_TYPE)
+    val json = Json.encodeToJsonElement(DeviceMessage.serializer(), message).jsonObject
+    val type = json["type"]?.jsonPrimitive?.content ?: error("Message json representation must have type.")
+    entity.setProperty("type", type)
+
+    message.sourceDevice?.let {
+        entity.setProperty(DeviceMessage::sourceDevice.name, it.toString())
+    }
+    message.targetDevice?.let {
+        entity.setProperty(DeviceMessage::targetDevice.name, it.toString())
+    }
+    message.time?.let {
+        entity.setProperty(DeviceMessage::targetDevice.name, it.toString())
+    }
+    entity.setBlobString("json", Json.encodeToString(json))
+}
+
+
+@OptIn(DFExperimental::class)
+private fun Entity.propertyMatchesName(propertyName: String, pattern: Name? = null) =
+    pattern == null || getProperty(propertyName).toString().parseAsName().matches(pattern)
+
+private fun Entity.timeInRange(range: ClosedRange<Instant>?): Boolean {
+    if (range == null) return true
+    val time: Instant? = getProperty(DeviceMessage::time.name)?.let { entityString ->
+        Instant.parse(entityString.toString())
+    }
+    return time != null && time in range
+}
+
+public class XodusDeviceMessageStorage(
+    private val entityStore: PersistentEntityStore,
+) : DeviceMessageStorage, AutoCloseable {
+
+    override suspend fun write(event: DeviceMessage) {
+        entityStore.executeInTransaction { txn ->
+            txn.writeMessage(event)
+        }
+    }
+
+    override suspend fun readAll(): List<DeviceMessage> = entityStore.computeInReadonlyTransaction { transaction ->
+        transaction.sort(
+            DEVICE_MESSAGE_ENTITY_TYPE,
+            DeviceMessage::time.name,
+            true
+        ).map {
+            Json.decodeFromString(
+                DeviceMessage.serializer(),
+                it.getBlobString("json") ?: error("No json content found")
+            )
+        }
+    }
+
+    override suspend fun read(
+        eventType: String,
+        range: ClosedRange<Instant>?,
+        sourceDevice: Name?,
+        targetDevice: Name?,
+    ): List<DeviceMessage> = entityStore.computeInReadonlyTransaction { transaction ->
+        transaction.find(
+            DEVICE_MESSAGE_ENTITY_TYPE,
+            "type",
+            eventType
+        ).asSequence().filter {
+            it.timeInRange(range) &&
+                    it.propertyMatchesName(DeviceMessage::sourceDevice.name, sourceDevice) &&
+                    it.propertyMatchesName(DeviceMessage::targetDevice.name, targetDevice)
+        }.map {
+            Json.decodeFromString(
+                DeviceMessage.serializer(),
+                it.getBlobString("json") ?: error("No json content found")
+            )
+        }.sortedBy { it.time }.toList()
+    }
+
+    override fun close() {
+        entityStore.close()
+    }
+
+    public companion object : Factory<XodusDeviceMessageStorage> {
+        internal const val DEVICE_MESSAGE_ENTITY_TYPE = "controls-kt.message"
+        public val XODUS_STORE_PROPERTY: Name = Name.of("xodus", "storagePath")
+
+        override fun build(context: Context, meta: Meta): XodusDeviceMessageStorage {
+            val io = context.request(IOPlugin)
+            val storePath = io.workDirectory.resolve(
+                meta[XODUS_STORE_PROPERTY]?.string
+                    ?: context.properties[XODUS_STORE_PROPERTY]?.string ?: "storage"
+            )
+
+            val entityStore = PersistentEntityStores.newInstance(storePath.toFile())
+
+            return XodusDeviceMessageStorage(entityStore)
+        }
+    }
+}
+
+/**
+ * Query all messages of given type
+ */
+@OptIn(ExperimentalSerializationApi::class)
+public suspend inline fun <reified T : DeviceMessage> XodusDeviceMessageStorage.query(
+    range: ClosedRange<Instant>? = null,
+    sourceDevice: Name? = null,
+    targetDevice: Name? = null,
+): List<T> = read(serialDescriptor<T>().serialName, range, sourceDevice, targetDevice).map {
+    //Check that all types are correct
+    it as T
+}

controls-storage/controls-xodus/src/test/kotlin/PropertyHistoryTest.kt

@@ -0,0 +1,77 @@
+import jetbrains.exodus.entitystore.PersistentEntityStores
+import kotlinx.coroutines.ExperimentalCoroutinesApi
+import kotlinx.coroutines.test.runTest
+import kotlinx.datetime.Instant
+import org.junit.jupiter.api.AfterAll
+import org.junit.jupiter.api.Assertions.assertEquals
+import org.junit.jupiter.api.BeforeAll
+import org.junit.jupiter.api.Test
+import space.kscience.controls.api.PropertyChangedMessage
+import space.kscience.controls.xodus.XodusDeviceMessageStorage
+import space.kscience.controls.xodus.query
+import space.kscience.controls.xodus.writeMessage
+import space.kscience.dataforge.meta.Meta
+import space.kscience.dataforge.names.Name
+import space.kscience.dataforge.names.asName
+import java.nio.file.Files
+
+internal class PropertyHistoryTest {
+    companion object {
+        val storeFile = Files.createTempDirectory("controls-xodus").toFile()
+
+
+        private val propertyChangedMessages = listOf(
+            PropertyChangedMessage(
+                "speed",
+                Meta.EMPTY,
+                time = Instant.fromEpochMilliseconds(1000),
+                sourceDevice = Name.of("virtual-car")
+            ),
+            PropertyChangedMessage(
+                "acceleration",
+                Meta.EMPTY,
+                time = Instant.fromEpochMilliseconds(1500),
+                sourceDevice = Name.of("virtual-car")
+            ),
+            PropertyChangedMessage(
+                "speed",
+                Meta.EMPTY,
+                time = Instant.fromEpochMilliseconds(2000),
+                sourceDevice = Name.of("magix-virtual-car")
+            )
+        )
+
+        @BeforeAll
+        @JvmStatic
+        fun createEntities() {
+            PersistentEntityStores.newInstance(storeFile).use {
+                it.executeInTransaction { transaction ->
+                    propertyChangedMessages.forEach { message ->
+                        transaction.writeMessage(message)
+                    }
+                }
+            }
+        }
+
+        @AfterAll
+        @JvmStatic
+        fun deleteDatabase() {
+            storeFile.deleteRecursively()
+        }
+    }
+
+    @OptIn(ExperimentalCoroutinesApi::class)
+    @Test
+    fun getPropertyHistoryTest() = runTest {
+        PersistentEntityStores.newInstance(storeFile).use { entityStore ->
+            XodusDeviceMessageStorage(entityStore).use { storage ->
+                assertEquals(
+                    propertyChangedMessages[0],
+                    storage.query<PropertyChangedMessage>(
+                        sourceDevice = "virtual-car".asName()
+                    ).first { it.property == "speed" }
+                )
+            }
+        }
+    }
+}

controls-storage/src/commonMain/kotlin/space/kscience/controls/storage/DeviceMessageStorage.kt

@@ -0,0 +1,23 @@
+package space.kscience.controls.storage
+
+import kotlinx.datetime.Instant
+import space.kscience.controls.api.DeviceMessage
+import space.kscience.dataforge.names.Name
+
+/**
+ * A storage for Controls-kt [DeviceMessage]
+ */
+public interface DeviceMessageStorage {
+    public suspend fun write(event: DeviceMessage)
+
+    public suspend fun readAll(): List<DeviceMessage>
+
+    public suspend fun read(
+        eventType: String,
+        range: ClosedRange<Instant>? = null,
+        sourceDevice: Name? = null,
+        targetDevice: Name? = null,
+    ): List<DeviceMessage>
+
+    public fun close()
+}

controls-storage/src/commonMain/kotlin/space/kscience/controls/storage/storageCommon.kt

@@ -0,0 +1,64 @@
+package space.kscience.controls.storage
+
+import kotlinx.coroutines.Job
+import kotlinx.coroutines.flow.filter
+import kotlinx.coroutines.flow.launchIn
+import kotlinx.coroutines.flow.onCompletion
+import kotlinx.coroutines.flow.onEach
+import space.kscience.controls.api.DeviceMessage
+import space.kscience.controls.manager.DeviceManager
+import space.kscience.controls.manager.hubMessageFlow
+import space.kscience.dataforge.context.Factory
+import space.kscience.dataforge.context.debug
+import space.kscience.dataforge.context.logger
+
+//TODO replace by plugin?
+public fun DeviceManager.storage(
+    factory: Factory<DeviceMessageStorage>,
+): DeviceMessageStorage = factory.build(context, meta)
+
+/**
+ * Begin to store DeviceMessages from this DeviceManager
+ * @param factory factory that will be used for creating persistent entity store instance. DefaultPersistentStoreFactory by default.
+ * DeviceManager's meta and context will be used for in invoke method.
+ * @param filterCondition allow you to specify messages which we want to store. Always true by default.
+ * @return Job which responsible for our storage
+ */
+public fun DeviceManager.storeMessages(
+    factory: Factory<DeviceMessageStorage>,
+    filterCondition: suspend (DeviceMessage) -> Boolean = { true },
+): Job {
+    val storage = factory.build(context, meta)
+    logger.debug { "Message storage with meta = $meta created" }
+
+    return hubMessageFlow(context).filter(filterCondition).onEach { message ->
+        storage.write(message)
+    }.onCompletion {
+        storage.close()
+        logger.debug { "Message storage closed" }
+    }.launchIn(context)
+}
+
+///**
+// * @return the list of deviceMessages that describes changes of specified property of specified device sorted by time
+// * @param sourceDeviceName a name of device, history of which property we want to get
+// * @param propertyName a name of property, history of which we want to get
+// * @param factory a factory that produce mongo clients
+// */
+//public suspend fun getPropertyHistory(
+//    sourceDeviceName: String,
+//    propertyName: String,
+//    factory: Factory<EventStorage>,
+//    meta: Meta = Meta.EMPTY,
+//): List<PropertyChangedMessage> {
+//    return factory(meta).use {
+//        it.getPropertyHistory(sourceDeviceName, propertyName)
+//    }
+//}
+//
+//
+//public enum class StorageKind {
+//    DEVICE_HUB,
+//    MAGIX_SERVER
+//}
+

controls-storage/src/jvmMain/kotlin/space/kscience/controls/storage/storageJvm.kt

@@ -0,0 +1,46 @@
+//package space.kscience.controls.storage
+//
+//import io.ktor.server.application.Application
+//import kotlinx.coroutines.InternalCoroutinesApi
+//import kotlinx.coroutines.flow.Flow
+//import kotlinx.coroutines.flow.MutableSharedFlow
+//import kotlinx.coroutines.flow.filter
+//import kotlinx.coroutines.flow.onEach
+//import kotlinx.coroutines.job
+//import ru.mipt.npm.magix.server.GenericMagixMessage
+//import space.kscience.dataforge.context.Factory
+//import space.kscience.dataforge.meta.Meta
+//
+///**
+// * Asynchronous version of synchronous API, so for more details check relative docs
+// */
+//
+//internal fun Flow<GenericMagixMessage>.store(
+//    client: EventStorage,
+//    flowFilter: suspend (GenericMagixMessage) -> Boolean = { true },
+//) {
+//    filter(flowFilter).onEach { message ->
+//        client.storeMagixMessage(message)
+//    }
+//}
+//
+///** Begin to store MagixMessages from certain flow
+// * @param flow flow of messages which we will store
+// * @param meta Meta which may have some configuration parameters for our storage and will be used in invoke method of factory
+// * @param factory factory that will be used for creating persistent entity store instance. DefaultPersistentStoreFactory by default.
+// * @param flowFilter allow you to specify messages which we want to store. Always true by default.
+// */
+//@OptIn(InternalCoroutinesApi::class)
+//public fun Application.store(
+//    flow: MutableSharedFlow<GenericMagixMessage>,
+//    factory: Factory<EventStorage>,
+//    meta: Meta = Meta.EMPTY,
+//    flowFilter: suspend (GenericMagixMessage) -> Boolean = { true },
+//) {
+//    val client = factory(meta)
+//
+//    flow.store(client, flowFilter)
+//    coroutineContext.job.invokeOnCompletion(onCancelling = true) {
+//        client.close()
+//    }
+//}

dataforge-device-client/build.gradle.kts

@@ -1,27 +0,0 @@
-plugins {
-    id("ru.mipt.npm.mpp")
-    id("ru.mipt.npm.publish")
-}
-
-val ktorVersion: String by rootProject.extra
-
-kotlin {
-    sourceSets {
-        commonMain {
-            dependencies {
-                implementation(project(":dataforge-device-core"))
-                implementation("io.ktor:ktor-client-core:$ktorVersion")
-            }
-        }
-        jvmMain {
-            dependencies {
-
-            }
-        }
-        jsMain {
-            dependencies {
-
-            }
-        }
-    }
-}

dataforge-device-client/src/commonMain/kotlin/hep/dataforge/control/client/MagixClient.kt

@@ -1,100 +0,0 @@
-package hep.dataforge.control.client
-
-import hep.dataforge.control.controllers.DeviceManager
-import hep.dataforge.control.controllers.DeviceMessage
-import hep.dataforge.control.controllers.respondMessage
-import hep.dataforge.meta.toJson
-import hep.dataforge.meta.toMeta
-import hep.dataforge.meta.wrap
-import io.ktor.client.HttpClient
-import io.ktor.client.request.post
-import io.ktor.http.ContentType
-import io.ktor.http.Url
-import io.ktor.http.contentType
-import kotlinx.coroutines.CoroutineScope
-import kotlinx.coroutines.Job
-import kotlinx.coroutines.flow.Flow
-import kotlinx.coroutines.flow.collect
-import kotlinx.coroutines.launch
-import kotlinx.serialization.json.*
-import kotlin.coroutines.CoroutineContext
-
-/*
-{
-  "id":"string|number[optional, but desired]",
-  "parentId": "string|number[optional]",
-  "target":"string[optional]",
-  "origin":"string[required]",
-  "user":"string[optional]",
-  "action":"string[optional, default='heartbeat']",
-  "payload":"object[optional]"
-}
- */
-
-
-/**
- * Communicate with server in [Magix format](https://github.com/waltz-controls/rfc/tree/master/1)
- */
-public class MagixClient(
-    private val manager: DeviceManager,
-    private val postUrl: Url,
-    private val inbox: Flow<JsonObject>
-): CoroutineScope {
-
-    override val coroutineContext: CoroutineContext = manager.context.coroutineContext + Job(manager.context.coroutineContext[Job])
-
-    private val client = HttpClient()
-
-    protected fun generateId(message: DeviceMessage, requestId: String?): String = if(requestId != null){
-        "$requestId.response"
-    } else{
-        "df[${message.hashCode()}"
-    }
-
-    private fun send(json: JsonObject) {
-        launch {
-            client.post<Unit>(postUrl) {
-                this.contentType(ContentType.Application.Json)
-                body = json.toString()
-            }
-        }
-    }
-
-    private fun wrapMessage(message: DeviceMessage, requestId: String? = null): JsonObject = buildJsonObject {
-        put("id", generateId(message, requestId))
-        if (requestId != null) {
-            put("parentId", requestId)
-        }
-        put("target", "magix")
-        put("origin", "df")
-        put("payload", message.config.toJson())
-    }
-
-
-    private val listenJob = launch {
-        manager.controller.messageOutput().collect { message ->
-            val json = wrapMessage(message)
-            send(json)
-        }
-    }
-
-    private val respondJob = launch {
-        inbox.collect { json ->
-            val requestId = json["id"]?.jsonPrimitive?.content
-            val payload = json["payload"]?.jsonObject
-            //TODO analyze action
-
-            if(payload != null){
-                val meta = payload.toMeta()
-                val request = DeviceMessage.wrap(meta)
-                val response = manager.respondMessage(request)
-                send(wrapMessage(response,requestId))
-            } else {
-                TODO("process heartbeat and other system messages")
-            }
-        }
-    }
-}
-
-
-

dataforge-device-client/src/commonMain/kotlin/hep/dataforge/control/client/sseClient.kt

@@ -1,13 +0,0 @@
-package hep.dataforge.control.client
-
-import io.ktor.client.HttpClient
-import io.ktor.client.call.receive
-import io.ktor.client.request.get
-import io.ktor.client.statement.HttpResponse
-import io.ktor.client.statement.HttpStatement
-import io.ktor.utils.io.ByteReadChannel
-
-suspend fun HttpClient.sse(address: String) = get<HttpStatement>(address).execute { response: HttpResponse ->
-    // Response is not downloaded here.
-    val channel = response.receive<ByteReadChannel>()
-}

dataforge-device-core/build.gradle.kts

@@ -1,30 +0,0 @@
-plugins {
-    id("ru.mipt.npm.mpp")
-    id("ru.mipt.npm.publish")
-}
-
-val dataforgeVersion: String by rootProject.extra
-
-kscience {
-    useCoroutines()
-    useSerialization()
-}
-
-kotlin {
-    sourceSets {
-        commonMain{
-            dependencies {
-                api("hep.dataforge:dataforge-io:$dataforgeVersion")
-            }
-        }
-        jvmMain{
-            dependencies{
-                api("io.ktor:ktor-network:1.3.2")
-            }
-        }
-        jsMain{
-            dependencies{
-            }
-        }
-    }
-}

dataforge-device-core/src/commonMain/kotlin/hep/dataforge/control/api/Device.kt

@@ -1,87 +0,0 @@
-package hep.dataforge.control.api
-
-import hep.dataforge.context.ContextAware
-import hep.dataforge.control.api.Device.Companion.DEVICE_TARGET
-import hep.dataforge.io.Envelope
-import hep.dataforge.io.EnvelopeBuilder
-import hep.dataforge.meta.Meta
-import hep.dataforge.meta.MetaItem
-import hep.dataforge.provider.Type
-import kotlinx.coroutines.CoroutineScope
-import kotlinx.coroutines.cancel
-import kotlinx.io.Closeable
-
-/**
- *  General interface describing a managed Device
- */
-@Type(DEVICE_TARGET)
-public interface Device : Closeable, ContextAware {
-    /**
-     * List of supported property descriptors
-     */
-    public val propertyDescriptors: Collection<PropertyDescriptor>
-
-    /**
-     * List of supported action descriptors. Action is a request to the device that
-     * may or may not change the properties
-     */
-    public val actionDescriptors: Collection<ActionDescriptor>
-
-    /**
-     * The supervisor scope encompassing all operations on a device. When canceled, cancels all running processes
-     */
-    public val scope: CoroutineScope
-
-    /**
-     * Register a new property change listener for this device.
-     * [owner] is provided optionally in order for listener to be
-     * easily removable
-     */
-    public fun registerListener(listener: DeviceListener, owner: Any? = listener)
-
-    /**
-     * Remove all listeners belonging to the specified owner
-     */
-    public fun removeListeners(owner: Any?)
-
-    /**
-     * Get the value of the property or throw error if property in not defined.
-     * Suspend if property value is not available
-     */
-    public suspend fun getProperty(propertyName: String): MetaItem<*>
-
-    /**
-     * Invalidate property and force recalculate
-     */
-    public suspend fun invalidateProperty(propertyName: String)
-
-    /**
-     * Set property [value] for a property with name [propertyName].
-     * In rare cases could suspend if the [Device] supports command queue and it is full at the moment.
-     */
-    public suspend fun setProperty(propertyName: String, value: MetaItem<*>)
-
-    /**
-     * Send an action request and suspend caller while request is being processed.
-     * Could return null if request does not return a meaningful answer.
-     */
-    public suspend fun execute(command: String, argument: MetaItem<*>? = null): MetaItem<*>?
-
-    /**
-     *
-     * A request with binary data or for binary response (or both). This request does not cover basic functionality like
-     * [setProperty], [getProperty] or [execute] and not defined for a generic device.
-     *
-     */
-    public suspend fun respondWithData(request: Envelope): EnvelopeBuilder = error("No binary response defined")
-
-    override fun close() {
-        scope.cancel("The device is closed")
-    }
-
-    public companion object {
-        public const val DEVICE_TARGET: String = "device"
-    }
-}
-
-public suspend fun Device.execute(name: String, meta: Meta?): MetaItem<*>? = execute(name, meta?.let { MetaItem.NodeItem(it) })