Stress test demo

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

@@ -1,10 +1,12 @@
 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
 
 /**
@@ -14,19 +16,23 @@ import kotlin.time.Duration
  *
  * The flow is canceled when the device scope is canceled
  */
-public fun <D : DeviceBase<D>, R> D.readRecurring(interval: Duration, reader: suspend D.() -> R): Flow<R> = flow {
+public fun <D : Device, R> D.readRecurring(interval: Duration, reader: suspend D.() -> R): Flow<R> = flow {
     while (isActive) {
-        kotlinx.coroutines.delay(interval)
+        delay(interval)
+        launch {
             emit(reader())
         }
     }
+}
 
 /**
  * Do a recurring (with a fixed delay) task on a device.
  */
-public fun <D : DeviceBase<D>> D.doRecurring(interval: Duration, task: suspend D.() -> Unit): Job = launch {
+public fun <D : Device> D.doRecurring(interval: Duration, task: suspend D.() -> Unit): Job = launch {
     while (isActive) {
-        kotlinx.coroutines.delay(interval)
+        delay(interval)
+        launch {
             task()
         }
     }
+}

controls-magix-client/build.gradle.kts

@@ -14,9 +14,9 @@ kscience {
         json()
     }
     dependencies {
-        implementation(projects.magix.magixApi)
+        api(projects.magix.magixApi)
-        implementation(projects.controlsCore)
+        api(projects.controlsCore)
-        implementation("com.benasher44:uuid:0.7.0")
+        api("com.benasher44:uuid:0.7.0")
     }
 }
 

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

@@ -26,6 +26,7 @@ public class DeviceClient(
     private val send: suspend (DeviceMessage) -> Unit,
 ) : Device {
 
+    @OptIn(kotlinx.coroutines.ExperimentalCoroutinesApi::class)
     override val coroutineContext: CoroutineContext = newCoroutineContext(context.coroutineContext)
 
     private val mutex = Mutex()

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

@@ -32,7 +32,7 @@ public fun DeviceManager.connectToMagix(
     endpoint: MagixEndpoint,
     endpointID: String = controlsMagixFormat.defaultFormat,
 ): Job = context.launch {
-    endpoint.subscribe(controlsMagixFormat).onEach { (request, payload) ->
+    endpoint.subscribe(controlsMagixFormat, targetFilter = listOf(endpointID)).onEach { (request, payload) ->
         val responsePayload = respondHubMessage(payload)
         if (responsePayload != null) {
             endpoint.broadcast(
@@ -44,7 +44,7 @@ public fun DeviceManager.connectToMagix(
             )
         }
     }.catch { error ->
-        logger.error(error) { "Error while responding to message" }
+        logger.error(error) { "Error while responding to message: ${error.message}" }
     }.launchIn(this)
 
     hubMessageFlow(this).onEach { payload ->
@@ -55,7 +55,7 @@ public fun DeviceManager.connectToMagix(
             id = "df[${payload.hashCode()}]"
         )
     }.catch { error ->
-        logger.error(error) { "Error while sending a message" }
+        logger.error(error) { "Error while sending a message: ${error.message}" }
     }.launchIn(this)
 }
 

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

@@ -66,7 +66,9 @@ internal val tangoMagixFormat = MagixFormat(
     setOf("tango")
 )
 
-
+/**
+ * Controls-kt device binding for Tango-flavored magix loop
+ */
 public fun DeviceManager.launchTangoMagix(
     endpoint: MagixEndpoint,
     endpointID: String = TANGO_MAGIX_FORMAT,

demo/many-devices/README.md

@@ -0,0 +1,4 @@
+# Module all-things
+
+
+

demo/many-devices/build.gradle.kts

@@ -0,0 +1,39 @@
+plugins {
+    kotlin("jvm")
+    application
+}
+
+
+repositories {
+    mavenCentral()
+    maven("https://repo.kotlin.link")
+}
+
+val ktorVersion: String by rootProject.extra
+val rsocketVersion: String by rootProject.extra
+
+dependencies {
+    implementation(projects.magix.magixServer)
+    implementation(projects.controlsMagixClient)
+    implementation(projects.magix.magixRsocket)
+
+    implementation("io.ktor:ktor-client-cio:$ktorVersion")
+    implementation("space.kscience:plotlykt-server:0.5.3")
+    implementation(spclibs.logback.classic)
+}
+
+kotlin{
+    jvmToolchain(11)
+}
+
+
+tasks.withType<org.jetbrains.kotlin.gradle.tasks.KotlinCompile>().configureEach {
+    kotlinOptions {
+        freeCompilerArgs = freeCompilerArgs + listOf("-Xjvm-default=all", "-Xopt-in=kotlin.RequiresOptIn")
+    }
+}
+
+
+application {
+    mainClass.set("space.kscience.controls.demo.DemoControllerViewKt")
+}

demo/many-devices/src/main/kotlin/space/kscience/controls/demo/MassDevice.kt

@@ -0,0 +1,118 @@
+package space.kscience.controls.demo
+
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.delay
+import kotlinx.coroutines.flow.launchIn
+import kotlinx.coroutines.flow.onEach
+import kotlinx.coroutines.isActive
+import kotlinx.coroutines.launch
+import kotlinx.datetime.Clock
+import kotlinx.datetime.Instant
+import space.kscience.controls.client.connectToMagix
+import space.kscience.controls.client.controlsMagixFormat
+import space.kscience.controls.manager.DeviceManager
+import space.kscience.controls.manager.install
+import space.kscience.controls.spec.*
+import space.kscience.dataforge.context.Context
+import space.kscience.dataforge.context.Factory
+import space.kscience.dataforge.context.request
+import space.kscience.dataforge.meta.Meta
+import space.kscience.dataforge.meta.get
+import space.kscience.dataforge.meta.int
+import space.kscience.magix.api.MagixEndpoint
+import space.kscience.magix.api.subscribe
+import space.kscience.magix.rsocket.rSocketWithTcp
+import space.kscience.magix.rsocket.rSocketWithWebSockets
+import space.kscience.magix.server.RSocketMagixFlowPlugin
+import space.kscience.magix.server.startMagixServer
+import space.kscience.plotly.Plotly
+import space.kscience.plotly.layout
+import space.kscience.plotly.plot
+import space.kscience.plotly.scatter
+import space.kscience.plotly.server.PlotlyUpdateMode
+import space.kscience.plotly.server.serve
+import space.kscience.plotly.server.show
+import java.util.concurrent.ConcurrentHashMap
+import kotlin.random.Random
+import kotlin.time.Duration.Companion.milliseconds
+
+
+class MassDevice(context: Context, meta: Meta) : DeviceBySpec<MassDevice>(MassDevice, context, meta) {
+    private val rng = Random(meta["seed"].int ?: 0)
+
+    private val randomValue get() = rng.nextDouble()
+
+    companion object : DeviceSpec<MassDevice>(), Factory<MassDevice> {
+
+        override fun build(context: Context, meta: Meta): MassDevice = MassDevice(context, meta)
+
+        val value by doubleProperty { randomValue }
+
+        override suspend fun MassDevice.onOpen() {
+            doRecurring(200.milliseconds) {
+                read(value)
+            }
+        }
+    }
+}
+
+fun main() {
+    val context = Context("Mass")
+
+    context.startMagixServer(
+        RSocketMagixFlowPlugin()
+    )
+
+    val numDevices = 1000
+
+    repeat(numDevices) {
+        val deviceContext = Context("Device${it}") {
+            plugin(DeviceManager)
+        }
+
+        val deviceManager = deviceContext.request(DeviceManager)
+
+        deviceManager.install("device$it", MassDevice)
+
+        deviceContext.launch(Dispatchers.Default) {
+            val deviceEndpoint = MagixEndpoint.rSocketWithWebSockets("localhost")
+            deviceManager.connectToMagix(deviceEndpoint, "device$it")
+        }
+    }
+
+    val application = Plotly.serve(port = 9091, scope = context) {
+        updateMode = PlotlyUpdateMode.PUSH
+        updateInterval = 1000
+        page { container ->
+            plot(renderer = container) {
+                layout {
+                    title = "Latest event"
+                }
+                scatter {
+                    launch(Dispatchers.Default) {
+                        val monitorEndpoint = MagixEndpoint.rSocketWithTcp("localhost")
+
+                        val latest = ConcurrentHashMap<String, Instant>()
+
+                        monitorEndpoint.subscribe(controlsMagixFormat).onEach { (magixMessage, payload) ->
+                            latest[magixMessage.origin] = payload.time ?: Clock.System.now()
+                        }.launchIn(this)
+
+                        while (isActive) {
+                            delay(1000)
+                            val now = Clock.System.now()
+                            x.strings = latest.keys
+                            y.numbers = latest.values.map { now.minus(it).inWholeMilliseconds / 1000.0 }
+                        }
+                    }
+                }
+            }
+        }
+    }
+
+    application.show()
+
+    while (readlnOrNull().isNullOrBlank()) {
+
+    }
+}

magix/magix-api/src/commonMain/kotlin/space/kscience/magix/api/MagixEndpoint.kt

@@ -19,9 +19,7 @@ public interface MagixEndpoint {
     /**
      * Send an event
      */
-    public suspend fun broadcast(
+    public suspend fun broadcast(message: MagixMessage)
-        message: MagixMessage,
-    )
 
     /**
      * Close the endpoint and the associated connection if it exists

magix/magix-api/src/commonMain/kotlin/space/kscience/magix/api/MagixMessageFilter.kt

@@ -10,6 +10,12 @@ public data class MagixMessageFilter(
     val origin: Collection<String?>? = null,
     val target: Collection<String?>? = null,
 ) {
+
+    public fun accepts(message: MagixMessage): Boolean =
+        format?.contains(message.format) ?: true
+                && origin?.contains(message.origin) ?: true
+                && target?.contains(message.target) ?: true
+
     public companion object {
         public val ALL: MagixMessageFilter = MagixMessageFilter()
     }
@@ -22,9 +28,5 @@ public fun Flow<MagixMessage>.filter(filter: MagixMessageFilter): Flow<MagixMess
     if (filter == MagixMessageFilter.ALL) {
         return this
     }
-    return filter { message ->
+    return filter(filter::accepts)
-        filter.format?.contains(message.format) ?: true
-                && filter.origin?.contains(message.origin) ?: true
-                && filter.target?.contains(message.target) ?: true
-    }
 }

magix/magix-rsocket/src/commonMain/kotlin/space/kscience/magix/rsocket/RSocketMagixEndpoint.kt

@@ -18,22 +18,20 @@ import space.kscience.magix.api.MagixEndpoint
 import space.kscience.magix.api.MagixMessage
 import space.kscience.magix.api.MagixMessageFilter
 import space.kscience.magix.api.filter
-import kotlin.coroutines.CoroutineContext
 import kotlin.coroutines.coroutineContext
 
-public class RSocketMagixEndpoint(
+public class RSocketMagixEndpoint(private val rSocket: RSocket) : MagixEndpoint, Closeable {
-    private val rSocket: RSocket,
-    private val coroutineContext: CoroutineContext,
-) : MagixEndpoint, Closeable {
 
     override fun subscribe(
         filter: MagixMessageFilter,
     ): Flow<MagixMessage> {
-        val payload = buildPayload { data(MagixEndpoint.magixJson.encodeToString(MagixMessageFilter.serializer(), filter)) }
+        val payload = buildPayload {
+            data(MagixEndpoint.magixJson.encodeToString(MagixMessageFilter.serializer(), filter))
+        }
         val flow = rSocket.requestStream(payload)
         return flow.map {
             MagixEndpoint.magixJson.decodeFromString(MagixMessage.serializer(), it.data.readText())
-        }.filter(filter).flowOn(coroutineContext[CoroutineDispatcher] ?: Dispatchers.Unconfined)
+        }.filter(filter).flowOn(rSocket.coroutineContext[CoroutineDispatcher] ?: Dispatchers.Unconfined)
     }
 
     override suspend fun broadcast(message: MagixMessage): Unit = withContext(coroutineContext) {
@@ -80,5 +78,5 @@ public suspend fun MagixEndpoint.Companion.rSocketWithWebSockets(
         client.close()
     }
 
-    return RSocketMagixEndpoint(rSocket, coroutineContext)
+    return RSocketMagixEndpoint(rSocket)
 }

magix/magix-rsocket/src/commonMain/kotlin/space/kscience/magix/rsocket/RSocketStreamMagixEndpoint.kt

@@ -26,7 +26,7 @@ import kotlin.coroutines.CoroutineContext
 import kotlin.coroutines.coroutineContext
 
 /**
- * RSocket endpoint based on established channel. This way it works a bit faster than [RSocketMagixEndpoint]
+ * RSocket endpoint based on an established channel. This way it works a bit faster than [RSocketMagixEndpoint]
  * for sending and receiving, but less flexible in terms of filters. One general [streamFilter] could be set
  * in constructor and applied on the loop side. Filters in [subscribe] are applied on the endpoint side on top
  * of received data.

magix/magix-rsocket/src/jvmMain/kotlin/space/kscience/magix/rsocket/withTcp.kt

@@ -23,7 +23,7 @@ public suspend fun MagixEndpoint.Companion.rSocketWithTcp(
     )
     val rSocket = buildConnector(rSocketConfig).connect(transport)
 
-    return RSocketMagixEndpoint(rSocket, coroutineContext)
+    return RSocketMagixEndpoint(rSocket)
 }
 
 

magix/magix-server/src/main/kotlin/space/kscience/magix/server/RSocketMagixFlowPlugin.kt

@@ -49,7 +49,7 @@ public class RSocketMagixFlowPlugin(public val port: Int = DEFAULT_MAGIX_RAW_POR
                     val message = MagixEndpoint.magixJson.decodeFromString(MagixMessage.serializer(), request.data.readText())
                     magixFlow.emit(message)
                 }
-                // bi-directional connection
+                // bidirectional connection, not covered by a standard
                 requestChannel { request: Payload, input: Flow<Payload> ->
                     input.onEach {
                         magixFlow.emit(MagixEndpoint.magixJson.decodeFromString(MagixMessage.serializer(), it.data.readText()))

settings.gradle.kts

@@ -62,6 +62,7 @@ include(
     ":magix:magix-storage:magix-storage-xodus",
     ":controls-magix-client",
     ":demo:all-things",
+    ":demo:many-devices",
     ":demo:magix-demo",
     ":demo:car",
     ":demo:motors",