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/*
* 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.dubbo.remoting.transport.netty;
import org.apache.dubbo.common.URL;
import org.apache.dubbo.common.logger.ErrorTypeAwareLogger;
import org.apache.dubbo.common.logger.LoggerFactory;
import org.apache.dubbo.common.utils.CollectionUtils;
import org.apache.dubbo.common.utils.NamedThreadFactory;
import org.apache.dubbo.common.utils.NetUtils;
import org.apache.dubbo.remoting.Channel;
import org.apache.dubbo.remoting.ChannelHandler;
import org.apache.dubbo.remoting.Constants;
import org.apache.dubbo.remoting.RemotingException;
import org.apache.dubbo.remoting.RemotingServer;
import org.apache.dubbo.remoting.transport.AbstractServer;
import org.apache.dubbo.remoting.transport.dispatcher.ChannelHandlers;
import org.jboss.netty.bootstrap.ServerBootstrap;
import org.jboss.netty.channel.ChannelFactory;
import org.jboss.netty.channel.ChannelPipeline;
import org.jboss.netty.channel.ChannelPipelineFactory;
import org.jboss.netty.channel.Channels;
import org.jboss.netty.channel.socket.nio.NioServerSocketChannelFactory;
import java.net.InetSocketAddress;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Map;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import static org.apache.dubbo.common.constants.CommonConstants.BACKLOG_KEY;
import static org.apache.dubbo.common.constants.CommonConstants.IO_THREADS_KEY;
import static org.apache.dubbo.common.constants.LoggerCodeConstants.TRANSPORT_FAILED_CLOSE;
import static org.apache.dubbo.remoting.Constants.EVENT_LOOP_BOSS_POOL_NAME;
import static org.apache.dubbo.remoting.Constants.EVENT_LOOP_WORKER_POOL_NAME;
/**
* NettyServer
*/
public class NettyServer extends AbstractServer implements RemotingServer {
private static final ErrorTypeAwareLogger logger = LoggerFactory.getErrorTypeAwareLogger(NettyServer.class);
private Map channels; //
private ServerBootstrap bootstrap;
private org.jboss.netty.channel.Channel channel;
public NettyServer(URL url, ChannelHandler handler) throws RemotingException {
super(url, ChannelHandlers.wrap(handler, url));
}
@Override
protected void doOpen() throws Throwable {
NettyHelper.setNettyLoggerFactory();
ExecutorService boss = Executors.newCachedThreadPool(new NamedThreadFactory(EVENT_LOOP_BOSS_POOL_NAME, true));
ExecutorService worker = Executors.newCachedThreadPool(new NamedThreadFactory(EVENT_LOOP_WORKER_POOL_NAME, true));
ChannelFactory channelFactory = new NioServerSocketChannelFactory(boss, worker, getUrl().getPositiveParameter(IO_THREADS_KEY, Constants.DEFAULT_IO_THREADS));
bootstrap = new ServerBootstrap(channelFactory);
final NettyHandler nettyHandler = new NettyHandler(getUrl(), this);
channels = nettyHandler.getChannels();
// https://issues.jboss.org/browse/NETTY-365
// https://issues.jboss.org/browse/NETTY-379
// final Timer timer = new HashedWheelTimer(new NamedThreadFactory("NettyIdleTimer", true));
bootstrap.setOption("child.tcpNoDelay", true);
bootstrap.setOption("backlog", getUrl().getPositiveParameter(BACKLOG_KEY, Constants.DEFAULT_BACKLOG));
bootstrap.setPipelineFactory(new ChannelPipelineFactory() {
@Override
public ChannelPipeline getPipeline() {
NettyCodecAdapter adapter = new NettyCodecAdapter(getCodec(), getUrl(), NettyServer.this);
ChannelPipeline pipeline = Channels.pipeline();
/*int idleTimeout = getIdleTimeout();
if (idleTimeout > 10000) {
pipeline.addLast("timer", new IdleStateHandler(timer, idleTimeout / 1000, 0, 0));
}*/
pipeline.addLast("decoder", adapter.getDecoder());
pipeline.addLast("encoder", adapter.getEncoder());
pipeline.addLast("handler", nettyHandler);
return pipeline;
}
});
// bind
channel = bootstrap.bind(getBindAddress());
}
@Override
protected void doClose() throws Throwable {
try {
if (channel != null) {
// unbind.
channel.close();
}
} catch (Throwable e) {
logger.warn(TRANSPORT_FAILED_CLOSE, "", "", e.getMessage(), e);
}
try {
Collection channels = getChannels();
if (CollectionUtils.isNotEmpty(channels)) {
for (org.apache.dubbo.remoting.Channel channel : channels) {
try {
channel.close();
} catch (Throwable e) {
logger.warn(TRANSPORT_FAILED_CLOSE, "", "", e.getMessage(), e);
}
}
}
} catch (Throwable e) {
logger.warn(TRANSPORT_FAILED_CLOSE, "", "", e.getMessage(), e);
}
try {
if (bootstrap != null) {
// release external resource.
bootstrap.releaseExternalResources();
}
} catch (Throwable e) {
logger.warn(TRANSPORT_FAILED_CLOSE, "", "", e.getMessage(), e);
}
try {
if (channels != null) {
channels.clear();
}
} catch (Throwable e) {
logger.warn(TRANSPORT_FAILED_CLOSE, "", "", e.getMessage(), e);
}
}
@Override
protected int getChannelsSize() {
return channels.size();
}
@Override
public Collection getChannels() {
Collection chs = new ArrayList<>(this.channels.size());
// pick channels from NettyServerHandler ( needless to check connectivity )
chs.addAll(this.channels.values());
return chs;
}
@Override
public Channel getChannel(InetSocketAddress remoteAddress) {
return channels.get(NetUtils.toAddressString(remoteAddress));
}
@Override
public boolean isBound() {
return channel.isBound();
}
}