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[REEF-362] Implement a Wake Transport using HTTP #1341
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,46 @@ | ||
| /* | ||
| * Licensed to the Apache Software Foundation (ASF) under one | ||
| * or more contributor license agreements. See the NOTICE file | ||
| * distributed with this work for additional information | ||
| * regarding copyright ownership. The ASF licenses this file | ||
| * to you 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 org.apache.reef.wake.remote.transport.netty; | ||
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| import io.netty.channel.ChannelFuture; | ||
| import io.netty.channel.ChannelFutureListener; | ||
| import org.apache.reef.wake.remote.transport.LinkListener; | ||
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|
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| /** | ||
| * Future Listener used in NettyLink. | ||
| */ | ||
| public final class NettyChannelFutureListener<T> implements ChannelFutureListener { | ||
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| private final T message; | ||
| private final LinkListener<T> listener; | ||
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| NettyChannelFutureListener(final T message, final LinkListener<T> listener) { | ||
| this.message = message; | ||
| this.listener = listener; | ||
| } | ||
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| @Override | ||
| public void operationComplete(final ChannelFuture channelFuture) throws Exception { | ||
| if (channelFuture.isSuccess()) { | ||
| listener.onSuccess(message); | ||
| } else { | ||
| listener.onException(channelFuture.cause(), channelFuture.channel().remoteAddress(), message); | ||
| } | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,44 @@ | ||
| /* | ||
| * Licensed to the Apache Software Foundation (ASF) under one | ||
| * or more contributor license agreements. See the NOTICE file | ||
| * distributed with this work for additional information | ||
| * regarding copyright ownership. The ASF licenses this file | ||
| * to you 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 org.apache.reef.wake.remote.transport.netty; | ||
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| import io.netty.channel.Channel; | ||
| import org.apache.reef.wake.remote.Encoder; | ||
| import org.apache.reef.wake.remote.transport.Link; | ||
| import org.apache.reef.wake.remote.transport.LinkListener; | ||
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|
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| /** | ||
| * Factory that creates a NettyLink. | ||
| */ | ||
| public final class NettyDefaultLinkFactory<T> implements NettyLinkFactory { | ||
|
There was a problem hiding this comment. Why don't you create HttpLinkFactory? There was a problem hiding this comment. I've created NettyHttpLinkFactory. Thank you! |
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| NettyDefaultLinkFactory() {} | ||
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| @Override | ||
| public Link newInstance(final Channel channel, final Encoder encoder) { | ||
| return new NettyLink<T>(channel, encoder); | ||
| } | ||
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| @Override | ||
| public Link newInstance(final Channel channel, | ||
| final Encoder encoder, | ||
| final LinkListener listener) { | ||
| return new NettyLink<T>(channel, encoder, listener); | ||
| } | ||
| } | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,96 @@ | ||
| /* | ||
| * Licensed to the Apache Software Foundation (ASF) under one | ||
| * or more contributor license agreements. See the NOTICE file | ||
| * distributed with this work for additional information | ||
| * regarding copyright ownership. The ASF licenses this file | ||
| * to you 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 org.apache.reef.wake.remote.transport.netty; | ||
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| import io.netty.buffer.ByteBuf; | ||
| import io.netty.channel.Channel; | ||
| import io.netty.channel.ChannelHandlerContext; | ||
| import io.netty.handler.codec.http.FullHttpResponse; | ||
| import io.netty.handler.codec.http.HttpContent; | ||
| import io.netty.util.CharsetUtil; | ||
| import org.apache.reef.wake.EStage; | ||
| import org.apache.reef.wake.remote.exception.RemoteRuntimeException; | ||
| import org.apache.reef.wake.remote.impl.TransportEvent; | ||
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| import java.net.SocketAddress; | ||
| import java.util.concurrent.ConcurrentMap; | ||
| import java.util.logging.Level; | ||
| import java.util.logging.Logger; | ||
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| /** | ||
| * A Netty event listener for client. | ||
| */ | ||
| final class NettyHttpClientEventListener extends AbstractNettyEventListener { | ||
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| private static final Logger LOG = Logger.getLogger(NettyHttpClientEventListener.class.getName()); | ||
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| NettyHttpClientEventListener( | ||
| final ConcurrentMap<SocketAddress, LinkReference> addrToLinkRefMap, | ||
| final EStage<TransportEvent> stage) { | ||
| super(addrToLinkRefMap, stage); | ||
| } | ||
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| @Override | ||
| public void channelRead(final ChannelHandlerContext ctx, final Object msg) { | ||
|
There was a problem hiding this comment. How about the following code? public void channelRead(final ChannelHandlerContext ctx, final FullHttpResponse response) {
byte[] content = null;
ByteBuf byteBuf = response.content();
if (byteBuf.hasArray()) {
content = byteBuf.array();
} else {
content = new byte[byteBuf.readableBytes()];
byteBuf.readBytes(content);
}
....
}There was a problem hiding this comment. I'm sorry that as method channelRead is overriding method, I cannot change type of parameter. |
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| if (msg instanceof FullHttpResponse) { | ||
| if(LOG.isLoggable(Level.FINEST)) { | ||
| LOG.log(Level.FINEST, "HttpResponse Received: {0}", msg); | ||
| } | ||
| final HttpContent httpContent = (HttpContent) msg; | ||
| final ByteBuf byteBuf = httpContent.content(); | ||
| final Channel channel = ctx.channel(); | ||
| final byte[] content; | ||
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| if (byteBuf.hasArray()) { | ||
| content = byteBuf.array(); | ||
| } else { | ||
| content = new byte[byteBuf.readableBytes()]; | ||
| byteBuf.readBytes(content); | ||
| } | ||
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There was a problem hiding this comment. Don't we have to create a new StringBuilder here? because it is the end of the message and we need a new StringBuilder for another response? |
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| if (LOG.isLoggable(Level.FINEST)) { | ||
| final StringBuilder buf = new StringBuilder(); | ||
| buf.append("CONTENT: ").append(byteBuf.toString(CharsetUtil.UTF_8)).append("\r\n"); | ||
| LOG.log(Level.FINEST, "MessageEvent: local: {0} remote: {1} :: {2}", new Object[]{ | ||
| channel.localAddress(), channel.remoteAddress(), buf}); | ||
| } | ||
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| // send to the dispatch stage | ||
| this.stage.onNext(this.getTransportEvent(content, channel)); | ||
| } else { | ||
| LOG.log(Level.SEVERE, "Unknown type of message received: {0}", msg); | ||
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| throw new RemoteRuntimeException("Unknown type of message received " + msg); | ||
| } | ||
| } | ||
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| @Override | ||
| public void channelActive(final ChannelHandlerContext ctx) { | ||
| // noop | ||
| } | ||
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| @Override | ||
| protected TransportEvent getTransportEvent(final byte[] message, final Channel channel) { | ||
|
There was a problem hiding this comment. I'm not sure why There was a problem hiding this comment. I think this method should not be used outside of netty implementation since the |
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| return new TransportEvent(message, channel.localAddress(), channel.remoteAddress()); | ||
| } | ||
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| @Override | ||
| protected void exceptionCleanup(final ChannelHandlerContext ctx, final Throwable cause) { | ||
|
There was a problem hiding this comment. Replied above. I don't know why It says outdated... |
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| this.closeChannel(ctx.channel()); | ||
| } | ||
| } | ||
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How about defining a pipeline variable?
final ChannelPipeline pipeline = ch.pipeline();