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/*
* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch 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.elasticsearch.transport.netty;
import org.elasticsearch.Version;
import org.elasticsearch.common.bytes.BytesReference;
import org.elasticsearch.common.bytes.ReleasablePagedBytesReference;
import org.elasticsearch.common.compress.CompressorFactory;
import org.elasticsearch.common.io.stream.BytesStreamOutput;
import org.elasticsearch.common.io.stream.ReleasableBytesStreamOutput;
import org.elasticsearch.common.io.stream.StreamOutput;
import org.elasticsearch.common.lease.Releasables;
import org.elasticsearch.common.netty.ReleaseChannelFutureListener;
import org.elasticsearch.transport.*;
import org.elasticsearch.transport.support.TransportStatus;
import org.jboss.netty.buffer.ChannelBuffer;
import org.jboss.netty.channel.Channel;
import org.jboss.netty.channel.ChannelFuture;
import java.io.IOException;
import java.io.NotSerializableException;
/**
*
*/
public class NettyTransportChannel implements TransportChannel {
private final NettyTransport transport;
private final TransportServiceAdapter transportServiceAdapter;
private final Version version;
private final String action;
private final Channel channel;
private final long requestId;
private final String profileName;
public NettyTransportChannel(NettyTransport transport, TransportServiceAdapter transportServiceAdapter, String action, Channel channel, long requestId, Version version, String profileName) {
this.transportServiceAdapter = transportServiceAdapter;
this.version = version;
this.transport = transport;
this.action = action;
this.channel = channel;
this.requestId = requestId;
this.profileName = profileName;
}
@Override
public String getProfileName() {
return profileName;
}
@Override
public String action() {
return this.action;
}
@Override
public void sendResponse(TransportResponse response) throws IOException {
sendResponse(response, TransportResponseOptions.EMPTY);
}
@Override
public void sendResponse(TransportResponse response, TransportResponseOptions options) throws IOException {
if (transport.compress) {
options = TransportResponseOptions.builder(options).withCompress(transport.compress).build();
}
byte status = 0;
status = TransportStatus.setResponse(status);
ReleasableBytesStreamOutput bStream = new ReleasableBytesStreamOutput(transport.bigArrays);
boolean addedReleaseListener = false;
try {
bStream.skip(NettyHeader.HEADER_SIZE);
StreamOutput stream = bStream;
if (options.compress()) {
status = TransportStatus.setCompress(status);
stream = CompressorFactory.defaultCompressor().streamOutput(stream);
}
stream.setVersion(version);
response.writeTo(stream);
stream.close();
ReleasablePagedBytesReference bytes = bStream.bytes();
ChannelBuffer buffer = bytes.toChannelBuffer();
NettyHeader.writeHeader(buffer, requestId, status, version);
ChannelFuture future = channel.write(buffer);
ReleaseChannelFutureListener listener = new ReleaseChannelFutureListener(bytes);
future.addListener(listener);
addedReleaseListener = true;
transportServiceAdapter.onResponseSent(requestId, action, response, options);
} finally {
if (!addedReleaseListener) {
Releasables.close(bStream.bytes());
}
}
}
@Override
public void sendResponse(Throwable error) throws IOException {
BytesStreamOutput stream = new BytesStreamOutput();
stream.skip(NettyHeader.HEADER_SIZE);
RemoteTransportException tx = new RemoteTransportException(transport.nodeName(), transport.wrapAddress(channel.getLocalAddress()), action, error);
stream.writeThrowable(tx);
byte status = 0;
status = TransportStatus.setResponse(status);
status = TransportStatus.setError(status);
BytesReference bytes = stream.bytes();
ChannelBuffer buffer = bytes.toChannelBuffer();
NettyHeader.writeHeader(buffer, requestId, status, version);
channel.write(buffer);
transportServiceAdapter.onResponseSent(requestId, action, error);
}
/**
* Returns the underlying netty channel. This method is intended be used for access to netty to get additional
* details when processing the request and may be used by plugins. Responses should be sent using the methods
* defined in this class and not directly on the channel.
* @return underlying netty channel
*/
public Channel getChannel() {
return channel;
}
}
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