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migrate ktor tcp transport to new API
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40 changes: 40 additions & 0 deletions
40
rsocket-transports/ktor-tcp/api/rsocket-transport-ktor-tcp.api
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107 changes: 107 additions & 0 deletions
107
...-tcp/src/commonMain/kotlin/io/rsocket/kotlin/transport/ktor/tcp/KtorTcpClientTransport.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,107 @@ | ||
| /* | ||
| * Copyright 2015-2024 the original author or authors. | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
|
|
||
| package io.rsocket.kotlin.transport.ktor.tcp | ||
|
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| import io.ktor.network.selector.* | ||
| import io.ktor.network.sockets.* | ||
| import io.rsocket.kotlin.internal.io.* | ||
| import io.rsocket.kotlin.transport.* | ||
| import kotlinx.coroutines.* | ||
| import kotlin.coroutines.* | ||
|
|
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| public sealed interface KtorTcpClientTransport : RSocketTransport { | ||
| public fun target(remoteAddress: SocketAddress): RSocketClientTarget | ||
| public fun target(host: String, port: Int): RSocketClientTarget | ||
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| public companion object Factory : | ||
| RSocketTransportFactory<KtorTcpClientTransport, KtorTcpClientTransportBuilder>(::KtorTcpClientTransportBuilderImpl) | ||
| } | ||
|
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| public sealed interface KtorTcpClientTransportBuilder : RSocketTransportBuilder<KtorTcpClientTransport> { | ||
| public fun dispatcher(context: CoroutineContext) | ||
| public fun inheritDispatcher(): Unit = dispatcher(EmptyCoroutineContext) | ||
|
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| public fun selectorManagerDispatcher(context: CoroutineContext) | ||
| public fun selectorManager(manager: SelectorManager, manage: Boolean) | ||
|
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| public fun socketOptions(block: SocketOptions.TCPClientSocketOptions.() -> Unit) | ||
|
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| //TODO: TLS support | ||
| } | ||
|
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| private class KtorTcpClientTransportBuilderImpl : KtorTcpClientTransportBuilder { | ||
| private var dispatcher: CoroutineContext = Dispatchers.IO | ||
| private var selector: KtorTcpSelector? = null | ||
| private var socketOptions: SocketOptions.TCPClientSocketOptions.() -> Unit = {} | ||
|
|
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| override fun dispatcher(context: CoroutineContext) { | ||
| check(context[Job] == null) { "Dispatcher shouldn't contain job" } | ||
| this.dispatcher = context | ||
| } | ||
|
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| override fun socketOptions(block: SocketOptions.TCPClientSocketOptions.() -> Unit) { | ||
| this.socketOptions = block | ||
| } | ||
|
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| override fun selectorManagerDispatcher(context: CoroutineContext) { | ||
| check(context[Job] == null) { "Dispatcher shouldn't contain job" } | ||
| this.selector = KtorTcpSelector.FromContext(context) | ||
| } | ||
|
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| override fun selectorManager(manager: SelectorManager, manage: Boolean) { | ||
| this.selector = KtorTcpSelector.FromInstance(manager, manage) | ||
| } | ||
|
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| @RSocketTransportApi | ||
| override fun buildTransport(context: CoroutineContext): KtorTcpClientTransport { | ||
| val transportContext = context.supervisorContext() + dispatcher | ||
| return KtorTcpClientTransportImpl( | ||
| coroutineContext = transportContext, | ||
| socketOptions = socketOptions, | ||
| selectorManager = selector.createFor(transportContext) | ||
| ) | ||
| } | ||
| } | ||
|
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| private class KtorTcpClientTransportImpl( | ||
| override val coroutineContext: CoroutineContext, | ||
| private val socketOptions: SocketOptions.TCPClientSocketOptions.() -> Unit, | ||
| private val selectorManager: SelectorManager, | ||
| ) : KtorTcpClientTransport { | ||
| override fun target(remoteAddress: SocketAddress): RSocketClientTarget = KtorTcpClientTargetImpl( | ||
| coroutineContext = coroutineContext.supervisorContext(), | ||
| socketOptions = socketOptions, | ||
| selectorManager = selectorManager, | ||
| remoteAddress = remoteAddress | ||
| ) | ||
|
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| override fun target(host: String, port: Int): RSocketClientTarget = target(InetSocketAddress(host, port)) | ||
| } | ||
|
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| private class KtorTcpClientTargetImpl( | ||
| override val coroutineContext: CoroutineContext, | ||
| private val socketOptions: SocketOptions.TCPClientSocketOptions.() -> Unit, | ||
| private val selectorManager: SelectorManager, | ||
| private val remoteAddress: SocketAddress, | ||
| ) : RSocketClientTarget { | ||
|
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| @RSocketTransportApi | ||
| override fun connectClient(handler: RSocketConnectionHandler): Job = launch { | ||
| val socket = aSocket(selectorManager).tcp().connect(remoteAddress, socketOptions) | ||
| handler.handleKtorTcpConnection(socket) | ||
| } | ||
| } |
111 changes: 111 additions & 0 deletions
111
.../ktor-tcp/src/commonMain/kotlin/io/rsocket/kotlin/transport/ktor/tcp/KtorTcpConnection.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,111 @@ | ||
| /* | ||
| * Copyright 2015-2024 the original author or authors. | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
|
|
||
| package io.rsocket.kotlin.transport.ktor.tcp | ||
|
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| import io.ktor.network.sockets.* | ||
| import io.ktor.utils.io.* | ||
| import io.ktor.utils.io.core.* | ||
| import io.rsocket.kotlin.internal.io.* | ||
| import io.rsocket.kotlin.transport.* | ||
| import io.rsocket.kotlin.transport.internal.* | ||
| import kotlinx.coroutines.* | ||
| import kotlinx.coroutines.channels.* | ||
|
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| @RSocketTransportApi | ||
| internal suspend fun RSocketConnectionHandler.handleKtorTcpConnection(socket: Socket): Unit = coroutineScope { | ||
| val outboundQueue = PrioritizationFrameQueue(Channel.BUFFERED) | ||
| val inbound = channelForCloseable<ByteReadPacket>(Channel.BUFFERED) | ||
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| val readerJob = launch { | ||
| val input = socket.openReadChannel() | ||
| try { | ||
| while (true) inbound.send(input.readFrame() ?: break) | ||
| input.cancel(null) | ||
| } catch (cause: Throwable) { | ||
| input.cancel(cause) | ||
| throw cause | ||
| } | ||
| }.onCompletion { inbound.cancel() } | ||
|
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| val writerJob = launch { | ||
| val output = socket.openWriteChannel() | ||
| try { | ||
| while (true) { | ||
| // we write all available frames here, and only after it flush | ||
| // in this case, if there are several buffered frames we can send them in one go | ||
| // avoiding unnecessary flushes | ||
| output.writeFrame(outboundQueue.dequeueFrame() ?: break) | ||
| while (true) output.writeFrame(outboundQueue.tryDequeueFrame() ?: break) | ||
| output.flush() | ||
| } | ||
| output.close(null) | ||
| } catch (cause: Throwable) { | ||
| output.close(cause) | ||
| throw cause | ||
| } | ||
| }.onCompletion { outboundQueue.cancel() } | ||
|
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| try { | ||
| handleConnection(KtorTcpConnection(outboundQueue, inbound)) | ||
| } finally { | ||
| readerJob.cancel() | ||
| outboundQueue.close() // will cause `writerJob` completion | ||
| // even if it was cancelled, we still need to close socket and await it closure | ||
| withContext(NonCancellable) { | ||
| // await completion of read/write and then close socket | ||
| readerJob.join() | ||
| writerJob.join() | ||
| // close socket | ||
| socket.close() | ||
| socket.socketContext.join() | ||
| } | ||
| } | ||
| } | ||
|
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| @RSocketTransportApi | ||
| private class KtorTcpConnection( | ||
| private val outboundQueue: PrioritizationFrameQueue, | ||
| private val inbound: ReceiveChannel<ByteReadPacket>, | ||
| ) : RSocketSequentialConnection { | ||
| override val isClosedForSend: Boolean get() = outboundQueue.isClosedForSend | ||
| override suspend fun sendFrame(streamId: Int, frame: ByteReadPacket) { | ||
| return outboundQueue.enqueueFrame(streamId, frame) | ||
| } | ||
|
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| override suspend fun receiveFrame(): ByteReadPacket? { | ||
| return inbound.receiveCatching().getOrNull() | ||
| } | ||
| } | ||
|
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| private suspend fun ByteWriteChannel.writeFrame(frame: ByteReadPacket) { | ||
| val packet = buildPacket { | ||
| writeInt24(frame.remaining.toInt()) | ||
| writePacket(frame) | ||
| } | ||
| try { | ||
| writePacket(packet) | ||
| } catch (cause: Throwable) { | ||
| packet.close() | ||
| throw cause | ||
| } | ||
| } | ||
|
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| private suspend fun ByteReadChannel.readFrame(): ByteReadPacket? { | ||
| val lengthPacket = readRemaining(3) | ||
| if (lengthPacket.remaining == 0L) return null | ||
| return readPacket(lengthPacket.readInt24()) | ||
| } |
49 changes: 49 additions & 0 deletions
49
...ts/ktor-tcp/src/commonMain/kotlin/io/rsocket/kotlin/transport/ktor/tcp/KtorTcpSelector.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,49 @@ | ||
| /* | ||
| * Copyright 2015-2024 the original author or authors. | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
|
|
||
| package io.rsocket.kotlin.transport.ktor.tcp | ||
|
|
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| import io.ktor.network.selector.* | ||
| import kotlinx.coroutines.* | ||
| import kotlin.coroutines.* | ||
|
|
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| internal sealed class KtorTcpSelector { | ||
| class FromContext(val context: CoroutineContext) : KtorTcpSelector() | ||
| class FromInstance(val selectorManager: SelectorManager, val manage: Boolean) : KtorTcpSelector() | ||
| } | ||
|
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| internal fun KtorTcpSelector?.createFor(parentContext: CoroutineContext): SelectorManager { | ||
| val selectorManager: SelectorManager | ||
| val manage: Boolean | ||
| when (this) { | ||
| null -> { | ||
| selectorManager = SelectorManager(parentContext) | ||
| manage = true | ||
| } | ||
|
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| is KtorTcpSelector.FromContext -> { | ||
| selectorManager = SelectorManager(parentContext + context) | ||
| manage = true | ||
| } | ||
|
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| is KtorTcpSelector.FromInstance -> { | ||
| selectorManager = this.selectorManager | ||
| manage = this.manage | ||
| } | ||
| } | ||
| if (manage) Job(parentContext.job).invokeOnCompletion { selectorManager.close() } | ||
| return selectorManager | ||
| } |
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