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[Streaming Indexing] Enhance RestAction with request / response strea…
…ming support (opensearch-project#13772) Signed-off-by: Andriy Redko <[email protected]>
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49 changes: 49 additions & 0 deletions
49
...actor-netty4/src/main/java/org/opensearch/http/reactor/netty4/ReactorNetty4HttpChunk.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,49 @@ | ||
| /* | ||
| * SPDX-License-Identifier: Apache-2.0 | ||
| * | ||
| * The OpenSearch Contributors require contributions made to | ||
| * this file be licensed under the Apache-2.0 license or a | ||
| * compatible open source license. | ||
| */ | ||
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| package org.opensearch.http.reactor.netty4; | ||
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| import org.opensearch.core.common.bytes.BytesReference; | ||
| import org.opensearch.http.HttpChunk; | ||
| import org.opensearch.transport.reactor.netty4.Netty4Utils; | ||
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| import java.util.concurrent.atomic.AtomicBoolean; | ||
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| import io.netty.buffer.ByteBuf; | ||
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| class ReactorNetty4HttpChunk implements HttpChunk { | ||
| private final AtomicBoolean released; | ||
| private final boolean pooled; | ||
| private final ByteBuf content; | ||
| private final boolean last; | ||
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| ReactorNetty4HttpChunk(ByteBuf content, boolean last) { | ||
| this.content = content; | ||
| this.pooled = true; | ||
| this.released = new AtomicBoolean(false); | ||
| this.last = last; | ||
| } | ||
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| @Override | ||
| public BytesReference content() { | ||
| assert released.get() == false; | ||
| return Netty4Utils.toBytesReference(content); | ||
| } | ||
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| @Override | ||
| public void close() { | ||
| if (pooled && released.compareAndSet(false, true)) { | ||
| content.release(); | ||
| } | ||
| } | ||
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| @Override | ||
| public boolean isLast() { | ||
| return last; | ||
| } | ||
| } |
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132 changes: 132 additions & 0 deletions
132
...4/src/main/java/org/opensearch/http/reactor/netty4/ReactorNetty4StreamingHttpChannel.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,132 @@ | ||
| /* | ||
| * SPDX-License-Identifier: Apache-2.0 | ||
| * | ||
| * The OpenSearch Contributors require contributions made to | ||
| * this file be licensed under the Apache-2.0 license or a | ||
| * compatible open source license. | ||
| */ | ||
|
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| package org.opensearch.http.reactor.netty4; | ||
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| import org.opensearch.common.concurrent.CompletableContext; | ||
| import org.opensearch.core.action.ActionListener; | ||
| import org.opensearch.core.common.bytes.BytesReference; | ||
| import org.opensearch.http.HttpChunk; | ||
| import org.opensearch.http.HttpResponse; | ||
| import org.opensearch.http.StreamingHttpChannel; | ||
| import org.opensearch.transport.reactor.netty4.Netty4Utils; | ||
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| import java.net.InetSocketAddress; | ||
| import java.util.List; | ||
| import java.util.Map; | ||
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| import io.netty.buffer.Unpooled; | ||
| import io.netty.handler.codec.http.DefaultHttpContent; | ||
| import io.netty.handler.codec.http.FullHttpResponse; | ||
| import io.netty.handler.codec.http.HttpContent; | ||
| import org.reactivestreams.Publisher; | ||
| import org.reactivestreams.Subscriber; | ||
| import reactor.core.publisher.Flux; | ||
| import reactor.core.publisher.FluxSink; | ||
| import reactor.netty.http.server.HttpServerRequest; | ||
| import reactor.netty.http.server.HttpServerResponse; | ||
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| class ReactorNetty4StreamingHttpChannel implements StreamingHttpChannel { | ||
| private final HttpServerRequest request; | ||
| private final HttpServerResponse response; | ||
| private final CompletableContext<Void> closeContext = new CompletableContext<>(); | ||
| private final Publisher<HttpChunk> receiver; | ||
| private final StreamingHttpContentSender sender; | ||
| private volatile FluxSink<HttpChunk> producer; | ||
| private volatile boolean lastChunkReceived = false; | ||
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| ReactorNetty4StreamingHttpChannel(HttpServerRequest request, HttpServerResponse response, StreamingHttpContentSender sender) { | ||
| this.request = request; | ||
| this.response = response; | ||
| this.sender = sender; | ||
| this.receiver = Flux.create(producer -> this.producer = producer); | ||
| this.request.withConnection(connection -> Netty4Utils.addListener(connection.channel().closeFuture(), closeContext)); | ||
| } | ||
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| @Override | ||
| public boolean isOpen() { | ||
| return true; | ||
| } | ||
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| @Override | ||
| public void close() { | ||
| request.withConnection(connection -> connection.channel().close()); | ||
| } | ||
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| @Override | ||
| public void addCloseListener(ActionListener<Void> listener) { | ||
| closeContext.addListener(ActionListener.toBiConsumer(listener)); | ||
| } | ||
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| @Override | ||
| public void sendChunk(HttpChunk chunk, ActionListener<Void> listener) { | ||
| sender.send(createContent(chunk), listener, chunk.isLast()); | ||
| } | ||
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| @Override | ||
| public void sendResponse(HttpResponse response, ActionListener<Void> listener) { | ||
| sender.send(createContent(response), listener, true); | ||
| } | ||
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| @Override | ||
| public void prepareResponse(int status, Map<String, List<String>> headers) { | ||
| this.response.status(status); | ||
| headers.forEach((k, vs) -> vs.forEach(v -> this.response.addHeader(k, v))); | ||
| } | ||
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| @Override | ||
| public InetSocketAddress getRemoteAddress() { | ||
| return (InetSocketAddress) response.remoteAddress(); | ||
| } | ||
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| @Override | ||
| public InetSocketAddress getLocalAddress() { | ||
| return (InetSocketAddress) response.hostAddress(); | ||
| } | ||
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| @Override | ||
| public void receiveChunk(HttpChunk message) { | ||
| try { | ||
| if (lastChunkReceived) { | ||
| return; | ||
| } | ||
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| producer.next(message); | ||
| if (message.isLast()) { | ||
| lastChunkReceived = true; | ||
| producer.complete(); | ||
| } | ||
| } finally { | ||
| message.close(); | ||
| } | ||
| } | ||
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| @Override | ||
| public boolean isReadable() { | ||
| return producer != null; | ||
| } | ||
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| @Override | ||
| public boolean isWritable() { | ||
| return sender.isReady(); | ||
| } | ||
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| @Override | ||
| public void subscribe(Subscriber<? super HttpChunk> subscriber) { | ||
| receiver.subscribe(subscriber); | ||
| } | ||
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| private static HttpContent createContent(HttpResponse response) { | ||
| final FullHttpResponse fullHttpResponse = (FullHttpResponse) response; | ||
| return new DefaultHttpContent(fullHttpResponse.content()); | ||
| } | ||
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| private static HttpContent createContent(HttpChunk chunk) { | ||
| return new DefaultHttpContent(Unpooled.copiedBuffer(BytesReference.toByteBuffers(chunk.content()))); | ||
| } | ||
| } |
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