/**
* 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.camel.component.netty;
import java.net.InetSocketAddress;
import java.util.concurrent.ExecutorService;
import org.apache.camel.CamelContext;
import org.apache.camel.Processor;
import org.apache.camel.impl.DefaultConsumer;
import org.jboss.netty.bootstrap.ConnectionlessBootstrap;
import org.jboss.netty.bootstrap.ServerBootstrap;
import org.jboss.netty.channel.Channel;
import org.jboss.netty.channel.ChannelFactory;
import org.jboss.netty.channel.ChannelPipeline;
import org.jboss.netty.channel.FixedReceiveBufferSizePredictorFactory;
import org.jboss.netty.channel.group.ChannelGroup;
import org.jboss.netty.channel.group.ChannelGroupFuture;
import org.jboss.netty.channel.group.DefaultChannelGroup;
import org.jboss.netty.channel.socket.DatagramChannelFactory;
import org.jboss.netty.channel.socket.nio.NioDatagramChannelFactory;
import org.jboss.netty.channel.socket.nio.NioServerSocketChannelFactory;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class NettyConsumer extends DefaultConsumer {
private static final transient Logger LOG = LoggerFactory.getLogger(NettyConsumer.class);
private final ChannelGroup allChannels;
private CamelContext context;
private NettyConfiguration configuration;
private ChannelFactory channelFactory;
private DatagramChannelFactory datagramChannelFactory;
private ServerBootstrap serverBootstrap;
private ConnectionlessBootstrap connectionlessServerBootstrap;
private ServerPipelineFactory pipelineFactory;
private Channel channel;
private ExecutorService bossExecutor;
private ExecutorService workerExecutor;
public NettyConsumer(NettyEndpoint nettyEndpoint, Processor processor, NettyConfiguration configuration) {
super(nettyEndpoint, processor);
this.context = this.getEndpoint().getCamelContext();
this.configuration = configuration;
this.allChannels = new DefaultChannelGroup("NettyConsumer-" + nettyEndpoint.getEndpointUri());
}
@Override
public NettyEndpoint getEndpoint() {
return (NettyEndpoint) super.getEndpoint();
}
@Override
protected void doStart() throws Exception {
super.doStart();
LOG.debug("Netty consumer binding to: {}", configuration.getAddress());
// setup pipeline factory
pipelineFactory = configuration.getServerPipelineFactory();
if (pipelineFactory == null) {
pipelineFactory = new DefaultServerPipelineFactory();
}
if (isTcp()) {
initializeTCPServerSocketCommunicationLayer();
} else {
initializeUDPServerSocketCommunicationLayer();
}
LOG.info("Netty consumer bound to: " + configuration.getAddress());
}
@Override
protected void doStop() throws Exception {
LOG.debug("Netty consumer unbinding from: {}", configuration.getAddress());
// close all channels
LOG.trace("Closing {} channels", allChannels.size());
ChannelGroupFuture future = allChannels.close();
future.awaitUninterruptibly();
// close server external resources
if (channelFactory != null) {
channelFactory.releaseExternalResources();
}
// and then shutdown the thread pools
if (bossExecutor != null) {
context.getExecutorServiceManager().shutdownNow(bossExecutor);
}
if (workerExecutor != null) {
context.getExecutorServiceManager().shutdownNow(workerExecutor);
}
LOG.info("Netty consumer unbound from: " + configuration.getAddress());
super.doStop();
}
public CamelContext getContext() {
return context;
}
public ChannelGroup getAllChannels() {
return allChannels;
}
public NettyConfiguration getConfiguration() {
return configuration;
}
public void setConfiguration(NettyConfiguration configuration) {
this.configuration = configuration;
}
public ChannelFactory getChannelFactory() {
return channelFactory;
}
public void setChannelFactory(ChannelFactory channelFactory) {
this.channelFactory = channelFactory;
}
public DatagramChannelFactory getDatagramChannelFactory() {
return datagramChannelFactory;
}
public void setDatagramChannelFactory(DatagramChannelFactory datagramChannelFactory) {
this.datagramChannelFactory = datagramChannelFactory;
}
public ServerBootstrap getServerBootstrap() {
return serverBootstrap;
}
public void setServerBootstrap(ServerBootstrap serverBootstrap) {
this.serverBootstrap = serverBootstrap;
}
public ConnectionlessBootstrap getConnectionlessServerBootstrap() {
return connectionlessServerBootstrap;
}
public void setConnectionlessServerBootstrap(ConnectionlessBootstrap connectionlessServerBootstrap) {
this.connectionlessServerBootstrap = connectionlessServerBootstrap;
}
protected boolean isTcp() {
return configuration.getProtocol().equalsIgnoreCase("tcp");
}
private void initializeTCPServerSocketCommunicationLayer() throws Exception {
bossExecutor = context.getExecutorServiceManager().newCachedThreadPool(this, "NettyTCPBoss");
workerExecutor = context.getExecutorServiceManager().newCachedThreadPool(this, "NettyTCPWorker");
if (configuration.getWorkerCount() <= 0) {
channelFactory = new NioServerSocketChannelFactory(bossExecutor, workerExecutor);
} else {
channelFactory = new NioServerSocketChannelFactory(bossExecutor, workerExecutor,
configuration.getWorkerCount());
}
serverBootstrap = new ServerBootstrap(channelFactory);
serverBootstrap.setOption("child.keepAlive", configuration.isKeepAlive());
serverBootstrap.setOption("child.tcpNoDelay", configuration.isTcpNoDelay());
serverBootstrap.setOption("reuseAddress", configuration.isReuseAddress());
serverBootstrap.setOption("child.reuseAddress", configuration.isReuseAddress());
serverBootstrap.setOption("child.connectTimeoutMillis", configuration.getConnectTimeout());
// must get the pipeline from the factory when opening a new connection
ChannelPipeline serverPipeline = pipelineFactory.getPipeline(this);
serverBootstrap.setPipeline(serverPipeline);
channel = serverBootstrap.bind(new InetSocketAddress(configuration.getHost(), configuration.getPort()));
// to keep track of all channels in use
allChannels.add(channel);
}
private void initializeUDPServerSocketCommunicationLayer() throws Exception {
workerExecutor = context.getExecutorServiceManager().newCachedThreadPool(this, "NettyUDPWorker");
if (configuration.getWorkerCount() <= 0) {
datagramChannelFactory = new NioDatagramChannelFactory(workerExecutor);
} else {
datagramChannelFactory = new NioDatagramChannelFactory(workerExecutor, configuration.getWorkerCount());
}
connectionlessServerBootstrap = new ConnectionlessBootstrap(datagramChannelFactory);
connectionlessServerBootstrap.setOption("child.keepAlive", configuration.isKeepAlive());
connectionlessServerBootstrap.setOption("child.tcpNoDelay", configuration.isTcpNoDelay());
connectionlessServerBootstrap.setOption("reuseAddress", configuration.isReuseAddress());
connectionlessServerBootstrap.setOption("child.reuseAddress", configuration.isReuseAddress());
connectionlessServerBootstrap.setOption("child.connectTimeoutMillis", configuration.getConnectTimeout());
connectionlessServerBootstrap.setOption("child.broadcast", configuration.isBroadcast());
connectionlessServerBootstrap.setOption("sendBufferSize", configuration.getSendBufferSize());
connectionlessServerBootstrap.setOption("receiveBufferSize", configuration.getReceiveBufferSize());
// only set this if user has specified
if (configuration.getReceiveBufferSizePredictor() > 0) {
connectionlessServerBootstrap.setOption("receiveBufferSizePredictorFactory",
new FixedReceiveBufferSizePredictorFactory(configuration.getReceiveBufferSizePredictor()));
}
// must get the pipeline from the factory when opening a new connection
ChannelPipeline serverPipeline = pipelineFactory.getPipeline(this);
connectionlessServerBootstrap.setPipeline(serverPipeline);
channel = connectionlessServerBootstrap.bind(new InetSocketAddress(configuration.getHost(), configuration.getPort()));
// to keep track of all channels in use
allChannels.add(channel);
}
}