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Working on remote function call

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This commit is contained in:
Alexander Nozik 2019-09-04 22:22:29 +03:00
parent 418e1c2134
commit 8bac218715
14 changed files with 385 additions and 65 deletions
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10
dataforge-io/src/commonMain/kotlin/hep/dataforge/io/Binary.kt
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@ -64,6 +64,16 @@ class ArrayBinary(val array: ByteArray) : RandomAccessBinary {
}
}
class PacketBinary(val packet: ByteReadPacket): Binary{
override val size: ULong
get() = TODO("not implemented") //To change initializer of created properties use File | Settings | File Templates.
override fun <R> read(block: Input.() -> R): R {
TODO("not implemented") //To change body of created functions use File | Settings | File Templates.
}
}
/**
* Read given binary as object using given format
*/

37
dataforge-io/src/commonMain/kotlin/hep/dataforge/io/Envelope.kt
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@ -1,9 +1,9 @@
package hep.dataforge.io
import hep.dataforge.meta.Laminate
import hep.dataforge.meta.Meta
import hep.dataforge.meta.get
import hep.dataforge.meta.string
import hep.dataforge.meta.*
import kotlinx.io.core.Output
import kotlinx.io.core.buildPacket
import kotlinx.io.core.readBytes
interface Envelope {
val meta: Meta
@ -20,6 +20,10 @@ interface Envelope {
const val ENVELOPE_DESCRIPTION_KEY = "$ENVELOPE_NODE.description"
//const val ENVELOPE_TIME_KEY = "@envelope.time"
/**
* Build a static envelope using provided builder
*/
fun build(block: EnvelopeBuilder.() -> Unit) = EnvelopeBuilder().apply(block).build()
}
}
@ -63,4 +67,29 @@ fun Envelope.withMetaLayers(vararg layers: Meta): Envelope {
this is ProxyEnvelope -> ProxyEnvelope(source, *layers, *this.meta.layers.toTypedArray())
else -> ProxyEnvelope(this, *layers)
}
}
class EnvelopeBuilder {
private val metaBuilder = MetaBuilder()
var data: Binary? = null
fun meta(block: MetaBuilder.() -> Unit) {
metaBuilder.apply(block)
}
var type by metaBuilder.string(key = Envelope.ENVELOPE_TYPE_KEY)
var dataType by metaBuilder.string(key = Envelope.ENVELOPE_DATA_TYPE_KEY)
var description by metaBuilder.string(key = Envelope.ENVELOPE_DESCRIPTION_KEY)
/**
* Construct a binary and transform it into byte-array based buffer
*/
fun data(block: Output.() -> Unit) {
val bytes = buildPacket {
block()
}
data = ArrayBinary(bytes.readBytes())
}
internal fun build() = SimpleEnvelope(metaBuilder.seal(), data)
}

38
dataforge-io/src/commonMain/kotlin/hep/dataforge/io/FunctionServer.kt
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@ -1,38 +0,0 @@
package hep.dataforge.io
import kotlin.reflect.KClass
/**
* A descriptor for specific type of functions
*/
interface FunctionSpec<T : Any, R : Any> {
val inputType: KClass<T>
val outputType: KClass<R>
}
/**
* A server that could produce asynchronous function values
*/
interface FunctionServer {
/**
* Call a function with given name and descriptor
*/
suspend fun <T : Any, R : Any, D : FunctionSpec<T, R>> call(name: String, descriptor: D, arg: T): R
/**
* Resolve a function descriptor for given types
*/
fun <T : Any, R : Any> resolveType(inputType: KClass<out T>, outputType: KClass<out R>): FunctionSpec<T, R>
/**
* Get a generic suspended function with given name and descriptor
*/
operator fun <T : Any, R : Any, D : FunctionSpec<T, R>> get(name: String, descriptor: D): (suspend (T) -> R) =
{ call(name, descriptor, it) }
}
suspend inline fun <reified T : Any, reified R : Any> FunctionServer.call(name: String, arg: T): R =
call(name, resolveType(T::class, R::class), arg)
inline operator fun <reified T : Any, reified R : Any> FunctionServer.get(name: String): (suspend (T) -> R) =
get(name, resolveType(T::class, R::class))

35
dataforge-io/src/commonMain/kotlin/hep/dataforge/io/IOFormat.kt
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@ -1,14 +1,47 @@
package hep.dataforge.io
import hep.dataforge.io.IOFormat.Companion.TYPE
import hep.dataforge.provider.Type
import kotlinx.io.core.*
import kotlinx.serialization.KSerializer
import kotlinx.serialization.cbor.Cbor
/**
* And interface for serialization facilities
*/
@Type(TYPE)
interface IOFormat<T : Any> {
fun Output.writeThis(obj: T)
fun Input.readThis(): T
companion object {
const val TYPE = "ioFormat"
}
}
fun <T : Any> IOFormat<T>.writePacket(obj: T): ByteReadPacket = buildPacket { writeThis(obj) }
fun <T : Any> IOFormat<T>.writeBytes(obj: T): ByteArray = buildPacket { writeThis(obj) }.readBytes()
fun <T : Any> IOFormat<T>.writeBytes(obj: T): ByteArray = buildPacket { writeThis(obj) }.readBytes()
object DoubleIOFormat: IOFormat<Double>{
override fun Output.writeThis(obj: Double) {
writeDouble(obj)
}
override fun Input.readThis(): Double = readDouble()
}
/**
* Experimental
*/
class SerializerIOFormat<T : Any>(val serializer: KSerializer<T>) : IOFormat<T> {
override fun Output.writeThis(obj: T) {
val bytes = Cbor.plain.dump(serializer, obj)
writeFully(bytes)
}
override fun Input.readThis(): T {
//FIXME reads the whole input
val bytes = readBytes()
return Cbor.plain.load(serializer, bytes)
}
}

8
dataforge-io/src/commonMain/kotlin/hep/dataforge/io/Responder.kt Normal file
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@ -0,0 +1,8 @@
package hep.dataforge.io
interface Responder {
/**
* Send a request and wait for response for this specific request
*/
suspend fun respond(request: Envelope): Envelope
}

34
dataforge-io/src/commonMain/kotlin/hep/dataforge/io/functions/FunctionServer.kt Normal file
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@ -0,0 +1,34 @@
package hep.dataforge.io
import hep.dataforge.context.ContextAware
import hep.dataforge.io.functions.FunctionSpec
/**
* A server that could produce asynchronous function values
*/
interface FunctionServer : ContextAware {
/**
* Call a function with given name and descriptor
*/
suspend fun <T : Any, R : Any> call(name: String, spec: FunctionSpec<T, R>, arg: T): R
suspend fun <T : Any, R : Any> callMany(
name: String,
spec: FunctionSpec<T, R>,
arg: List<T>
): List<R> = List(arg.size) {
call(name, spec, arg[it])
}
/**
* Get a generic suspended function with given name and descriptor
*/
fun <T : Any, R : Any> get(
name: String,
spec: FunctionSpec<T, R>
): (suspend (T) -> R) =
{ call(name, spec, it) }
}

9
dataforge-io/src/commonMain/kotlin/hep/dataforge/io/functions/FunctionSpec.kt Normal file
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@ -0,0 +1,9 @@
package hep.dataforge.io.functions
import hep.dataforge.io.IOFormat
import hep.dataforge.meta.MetaRepr
interface FunctionSpec<T : Any, R : Any>: MetaRepr {
val inputFormat: IOFormat<T>
val outputFormat: IOFormat<R>
}

58
dataforge-io/src/commonMain/kotlin/hep/dataforge/io/functions/FunctionsPlugin.kt Normal file
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@ -0,0 +1,58 @@
package hep.dataforge.io.functions
import hep.dataforge.context.AbstractPlugin
import hep.dataforge.context.PluginFactory
import hep.dataforge.context.PluginTag
import hep.dataforge.io.DoubleIOFormat
import hep.dataforge.io.IOFormat
import hep.dataforge.io.IOPlugin
import hep.dataforge.meta.Meta
import hep.dataforge.meta.buildMeta
import kotlin.reflect.KClass
class FunctionsPlugin(meta: Meta) : AbstractPlugin(meta) {
override val tag: PluginTag get() = Companion.tag
override fun dependsOn(): List<PluginFactory<*>> = listOf(IOPlugin)
private val specs: Collection<FunctionSpec<out Any, out Any>> = listOf(
DoubleToDoubleFunctionSpec
)
fun resolve(meta: Meta): FunctionSpec<*, *>? {
return specs.find { it.toMeta() == meta }
}
// fun <T : Any, R : Any> resolve(inputType: KClass<out T>, outputType: KClass<out R>): FunctionSpec<T, R> {
//
// }
companion object : PluginFactory<FunctionsPlugin> {
override val tag: PluginTag = PluginTag("io.functions", group = PluginTag.DATAFORGE_GROUP)
override val type: KClass<out FunctionsPlugin> = FunctionsPlugin::class
override fun invoke(meta: Meta): FunctionsPlugin = FunctionsPlugin(meta)
}
}
object DoubleToDoubleFunctionSpec : FunctionSpec<Double, Double> {
override val inputFormat: IOFormat<Double> get() = DoubleIOFormat
override val outputFormat: IOFormat<Double> get() = DoubleIOFormat
override fun toMeta(): Meta = buildMeta {
"input" to "Double"
"output" to "Double"
}
}
//suspend inline fun <reified T : Any, reified R : Any> FunctionServer.call(name: String, arg: T): R {
// val plugin = context.plugins.load(FunctionsPlugin)
// val spec = plugin.resolve(T::class, R::class)
// return call(name, spec, arg)
//}
//
//inline operator fun <reified T : Any, reified R : Any> FunctionServer.get(name: String): (suspend (T) -> R) {
// val plugin = context.plugins.load(FunctionsPlugin)
// val spec = plugin.resolve(T::class, R::class)
// return get(name, spec)
//}

100
dataforge-io/src/commonMain/kotlin/hep/dataforge/io/functions/RemoteFunctionClient.kt Normal file
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@ -0,0 +1,100 @@
package hep.dataforge.io
import hep.dataforge.context.Context
import hep.dataforge.context.ContextAware
import hep.dataforge.io.functions.FunctionSpec
import hep.dataforge.io.functions.FunctionsPlugin
import hep.dataforge.meta.get
import hep.dataforge.meta.int
import kotlin.reflect.KClass
class RemoteFunctionClient(override val context: Context, val responder: Responder) : FunctionServer, ContextAware {
private fun <T : Any> encodeOne(name: String, spec: FunctionSpec<T, *>, value: T): Envelope =
Envelope.build {
type = REQUEST_TYPE
meta {
FUNCTION_NAME_KEY to name
FUNCTION_SPEC_KEY to spec.toMeta()
}
data {
spec.inputFormat.run {
writeThis(value)
}
}
}
private fun <T : Any> encodeMany(name: String, spec: FunctionSpec<T, *>, values: List<T>): Envelope =
Envelope.build {
type = REQUEST_TYPE
meta {
FUNCTION_NAME_KEY to name
FUNCTION_SPEC_KEY to spec.toMeta()
SIZE_KEY to values.size
}
data {
spec.inputFormat.run {
values.forEach {
writeThis(it)
}
}
}
}
private fun <R : Any> decode(spec: FunctionSpec<*, R>, envelope: Envelope): List<R> {
require(envelope.type == RESPONSE_TYPE) { "Unexpected message type: ${envelope.type}" }
val size = envelope.meta[SIZE_KEY].int ?: 1
return if (size == 0) {
emptyList()
} else {
envelope.data?.read {
List<R>(size) {
spec.outputFormat.run {
readThis()
}
}
} ?: error("Message does not contain data")
}
}
override suspend fun <T : Any, R : Any> call(
name: String,
spec: FunctionSpec<T, R>,
arg: T
): R {
val request = encodeOne(name, spec, arg)
val response = responder.respond(request)
return decode(spec, response).first()
}
override suspend fun <T : Any, R : Any> callMany(
name: String,
spec: FunctionSpec<T, R>,
arg: List<T>
): List<R> {
val request = encodeMany(name, spec, arg)
val response = responder.respond(request)
return decode(spec, response)
}
private val plugin by lazy {
context.plugins.load(FunctionsPlugin)
}
fun <T : Any, R : Any> resolveSpec(
inputType: KClass<out T>,
outputType: KClass<out R>
): FunctionSpec<T, R> {
return plugin.resolve(inputType, outputType)
}
companion object {
const val REQUEST_TYPE = "function.request"
const val RESPONSE_TYPE = "function.response"
const val FUNCTION_NAME_KEY = "function"
const val SIZE_KEY = "size"
const val FUNCTION_SPEC_KEY = "spec"
}
}

58
dataforge-io/src/commonMain/kotlin/hep/dataforge/io/functions/RemoteFunctionServer.kt Normal file
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@ -0,0 +1,58 @@
package hep.dataforge.io.functions
import hep.dataforge.context.Context
import hep.dataforge.context.ContextAware
import hep.dataforge.io.*
import hep.dataforge.meta.get
import hep.dataforge.meta.int
import hep.dataforge.meta.node
import hep.dataforge.meta.string
class RemoteFunctionServer(
override val context: Context,
val functionServer: FunctionServer
) : ContextAware, Responder {
private val plugin by lazy {
context.plugins.load(FunctionsPlugin)
}
override suspend fun respond(request: Envelope): Envelope {
require(request.type == RemoteFunctionClient.REQUEST_TYPE) { "Unexpected message type: ${request.type}" }
val functionName = request.meta[RemoteFunctionClient.FUNCTION_NAME_KEY].string ?: ""
@Suppress("UNCHECKED_CAST") val spec = request.meta[RemoteFunctionClient.FUNCTION_SPEC_KEY].node?.let {
plugin.resolve(it) as FunctionSpec<Any, Any>
} ?: error("Function specification not found")
val size = request
.meta[RemoteFunctionClient.SIZE_KEY].int ?: 1
val input = request.data?.read {
spec.inputFormat.run {
List(size) {
readThis()
}
}
} ?: error("Input is empty")
val output = functionServer.callMany<Any, Any>(functionName, spec, input)
return Envelope.build {
type = RemoteFunctionClient.RESPONSE_TYPE
meta {
RemoteFunctionClient.FUNCTION_NAME_KEY to functionName
RemoteFunctionClient.FUNCTION_SPEC_KEY to spec.toMeta()
RemoteFunctionClient.SIZE_KEY to output.size
}
data {
spec.outputFormat.run {
output.forEach {
writeThis(it)
}
}
}
}
}
}

32
dataforge-workspace/src/commonMain/kotlin/hep/dataforge/workspace/Dependency.kt
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@ -6,10 +6,7 @@ import hep.dataforge.data.filter
import hep.dataforge.meta.Meta
import hep.dataforge.meta.MetaRepr
import hep.dataforge.meta.buildMeta
import hep.dataforge.names.EmptyName
import hep.dataforge.names.Name
import hep.dataforge.names.get
import hep.dataforge.names.isEmpty
import hep.dataforge.names.*
/**
* A dependency of the task which allows to lazily create a data tree for single dependency
@ -45,12 +42,18 @@ class AllDataDependency(val placement: Name = EmptyName) : Dependency() {
"data" to "*"
"to" to placement
}
}
class TaskModelDependency(val name: String, val meta: Meta, val placement: Name = EmptyName) : Dependency() {
abstract class TaskDependency(val meta: Meta, val placement: Name = EmptyName) : Dependency() {
abstract fun resolveTask(workspace: Workspace): Task<*>
/**
* A name of the dependency for logging and serialization
*/
abstract val name: Name
override fun apply(workspace: Workspace): DataNode<Any> {
val task = workspace.tasks[name] ?: error("Task with name $name is not found in the workspace")
val task = resolveTask(workspace)
if (task.isTerminal) TODO("Support terminal task")
val result = workspace.run(task, meta)
return if (placement.isEmpty()) {
@ -65,4 +68,19 @@ class TaskModelDependency(val name: String, val meta: Meta, val placement: Name
"meta" to meta
"to" to placement
}
}
class DirectTaskDependency(val task: Task<*>, meta: Meta, placement: Name) : TaskDependency(meta, placement) {
override fun resolveTask(workspace: Workspace): Task<*> = task
override val name: Name get() = DIRECT_TASK_NAME + task.name
companion object {
val DIRECT_TASK_NAME = "@direct".asName()
}
}
class WorkspaceTaskDependency(override val name: Name, meta: Meta, placement: Name) : TaskDependency(meta, placement) {
override fun resolveTask(workspace: Workspace): Task<*> =
workspace.tasks[name] ?: error("Task with name $name is not found in the workspace")
}

13
dataforge-workspace/src/commonMain/kotlin/hep/dataforge/workspace/TaskModel.kt
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@ -35,9 +35,9 @@ data class TaskModel(
"meta" to meta
"dependsOn" to {
val dataDependencies = dependencies.filterIsInstance<DataDependency>()
val taskDependencies = dependencies.filterIsInstance<TaskModelDependency>()
val taskDependencies = dependencies.filterIsInstance<TaskDependency>()
setIndexed("data".toName(), dataDependencies.map { it.toMeta() })
setIndexed("task".toName(), taskDependencies.map { it.toMeta() }) { taskDependencies[it].name }
setIndexed("task".toName(), taskDependencies.map { it.toMeta() }) { taskDependencies[it].name.toString() }
//TODO ensure all dependencies are listed
}
}
@ -76,14 +76,15 @@ class TaskModelBuilder(val name: String, meta: Meta = EmptyMeta) {
var target: String by this.meta.string(key = MODEL_TARGET_KEY, default = "")
/**
* Add dependency for
* Add dependency for a task defined in a workspace and resolved by
*/
fun dependsOn(name: String, meta: Meta = this.meta, placement: Name = EmptyName) {
dependencies.add(TaskModelDependency(name, meta, placement))
dependencies.add(WorkspaceTaskDependency(name.toName(), meta, placement))
}
fun dependsOn(task: Task<*>, meta: Meta = this.meta, placement: Name = EmptyName) =
dependsOn(task.name, meta, placement)
fun dependsOn(task: Task<*>, meta: Meta = this.meta, placement: Name = EmptyName) {
dependencies.add(DirectTaskDependency(task, meta, placement))
}
fun dependsOn(task: Task<*>, placement: Name = EmptyName, metaBuilder: MetaBuilder.() -> Unit) =
dependsOn(task.name, buildMeta(metaBuilder), placement)

12
dataforge-workspace/src/jvmMain/kotlin/hep/dataforge/workspace/TaskBuilder.kt
View File

@ -81,13 +81,13 @@ class TaskBuilder(val name: String) {
inline fun <reified T : Any, reified R : Any> customPipe(
from: String = "",
to: String = "",
crossinline block: PipeBuilder<T, R>.(Context) -> Unit
crossinline block: PipeBuilder<T, R>.(TaskEnv) -> Unit
) {
action(from, to) {
PipeAction(
inputType = T::class,
outputType = R::class
) { block(context) }
) { block(this@action) }
}
}
@ -118,13 +118,13 @@ class TaskBuilder(val name: String) {
inline fun <reified T : Any, reified R : Any> joinByGroup(
from: String = "",
to: String = "",
crossinline block: JoinGroupBuilder<T, R>.(Context) -> Unit
crossinline block: JoinGroupBuilder<T, R>.(TaskEnv) -> Unit
) {
action(from, to) {
JoinAction(
inputType = T::class,
outputType = R::class
) { block(context) }
) { block(this@action) }
}
}
@ -157,13 +157,13 @@ class TaskBuilder(val name: String) {
inline fun <reified T : Any, reified R : Any> split(
from: String = "",
to: String = "",
crossinline block: SplitBuilder<T, R>.(Context) -> Unit
crossinline block: SplitBuilder<T, R>.(TaskEnv) -> Unit
) {
action(from, to) {
SplitAction(
inputType = T::class,
outputType = R::class
) { block(context) }
) { block(this@action) }
}
}

6
dataforge-workspace/src/jvmTest/kotlin/hep/dataforge/workspace/SimpleWorkspaceTest.kt
View File

@ -60,16 +60,16 @@ class SimpleWorkspaceTest {
model {
allData()
}
joinByGroup<Int, Double> { context ->
joinByGroup<Int, Double> {env->
group("even", filter = { name, _ -> name.toString().toInt() % 2 == 0 }) {
result { data ->
context.logger.info { "Starting even" }
env.context.logger.info { "Starting even" }
data.values.average()
}
}
group("odd", filter = { name, _ -> name.toString().toInt() % 2 == 1 }) {
result { data ->
context.logger.info { "Starting odd" }
env.context.logger.info { "Starting odd" }
data.values.average()
}
}