| /*
|
| * Copyright 1999-2011 Alibaba Group.
|
| *
|
| * Licensed 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 com.alibaba.dubbo.remoting.transport.netty; |
| |
| import java.net.InetSocketAddress; |
| import java.util.Map; |
| import java.util.concurrent.ConcurrentHashMap; |
| |
| import org.jboss.netty.channel.ChannelHandler.Sharable; |
| import org.jboss.netty.channel.ChannelHandlerContext; |
| import org.jboss.netty.channel.ChannelStateEvent; |
| import org.jboss.netty.channel.ExceptionEvent; |
| import org.jboss.netty.channel.MessageEvent; |
| import org.jboss.netty.channel.SimpleChannelHandler; |
| |
| import com.alibaba.dubbo.common.URL; |
| import com.alibaba.dubbo.common.utils.NetUtils; |
| import com.alibaba.dubbo.remoting.Channel; |
| import com.alibaba.dubbo.remoting.ChannelHandler; |
| |
| /** |
| * NettyHandler |
| * |
| * @author william.liangf |
| */ |
| @Sharable |
| public class NettyHandler extends SimpleChannelHandler { |
| |
| private final Map<String, Channel> channels = new ConcurrentHashMap<String, Channel>(); // <ip:port, channel> |
| |
| private final URL url; |
| |
| private final ChannelHandler handler; |
| |
| public NettyHandler(URL url, ChannelHandler handler){ |
| if (url == null) { |
| throw new IllegalArgumentException("url == null"); |
| } |
| if (handler == null) { |
| throw new IllegalArgumentException("handler == null"); |
| } |
| this.url = url; |
| this.handler = handler; |
| } |
| |
| public Map<String, Channel> getChannels() { |
| return channels; |
| } |
| |
| @Override |
| public void channelConnected(ChannelHandlerContext ctx, ChannelStateEvent e) throws Exception { |
| NettyChannel channel = NettyChannel.getOrAddChannel(ctx.getChannel(), url, handler); |
| try { |
| if (channel != null) { |
| channels.put(NetUtils.toAddressString((InetSocketAddress) ctx.getChannel().getRemoteAddress()), channel); |
| } |
| handler.connected(channel); |
| } finally { |
| NettyChannel.removeChannelIfDisconnected(ctx.getChannel()); |
| } |
| } |
| |
| @Override |
| public void channelDisconnected(ChannelHandlerContext ctx, ChannelStateEvent e) throws Exception {
|
| NettyChannel channel = NettyChannel.getOrAddChannel(ctx.getChannel(), url, handler); |
| try { |
| channels.remove(NetUtils.toAddressString((InetSocketAddress) ctx.getChannel().getRemoteAddress())); |
| handler.disconnected(channel); |
| } finally { |
| NettyChannel.removeChannelIfDisconnected(ctx.getChannel()); |
| } |
| } |
| |
| @Override |
| public void messageReceived(ChannelHandlerContext ctx, MessageEvent e) throws Exception { |
| NettyChannel channel = NettyChannel.getOrAddChannel(ctx.getChannel(), url, handler); |
| try { |
| handler.received(channel, e.getMessage()); |
| } finally { |
| NettyChannel.removeChannelIfDisconnected(ctx.getChannel()); |
| } |
| } |
| |
| @Override |
| public void writeRequested(ChannelHandlerContext ctx, MessageEvent e) throws Exception { |
| super.writeRequested(ctx, e); |
| NettyChannel channel = NettyChannel.getOrAddChannel(ctx.getChannel(), url, handler); |
| try { |
| handler.sent(channel, e.getMessage()); |
| } finally { |
| NettyChannel.removeChannelIfDisconnected(ctx.getChannel()); |
| } |
| } |
| |
| @Override |
| public void exceptionCaught(ChannelHandlerContext ctx, ExceptionEvent e) throws Exception { |
| NettyChannel channel = NettyChannel.getOrAddChannel(ctx.getChannel(), url, handler); |
| try { |
| handler.caught(channel, e.getCause()); |
| } finally { |
| NettyChannel.removeChannelIfDisconnected(ctx.getChannel()); |
| } |
| } |
| |
| } |