| /* |
| * 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 com.alibaba.dubbo.remoting.transport.netty4; |
| |
| 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; |
| |
| import io.netty.channel.ChannelDuplexHandler; |
| import io.netty.channel.ChannelHandlerContext; |
| import io.netty.channel.ChannelPromise; |
| |
| import java.net.InetSocketAddress; |
| import java.util.Map; |
| import java.util.concurrent.ConcurrentHashMap; |
| |
| /** |
| * NettyClientHandler |
| */ |
| @io.netty.channel.ChannelHandler.Sharable |
| public class NettyServerHandler extends ChannelDuplexHandler { |
| |
| private final Map<String, Channel> channels = new ConcurrentHashMap<String, Channel>(); // <ip:port, channel> |
| |
| private final URL url; |
| |
| private final ChannelHandler handler; |
| |
| public NettyServerHandler(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 channelActive(ChannelHandlerContext ctx) throws Exception { |
| ctx.fireChannelActive(); |
| |
| NettyChannel channel = NettyChannel.getOrAddChannel(ctx.channel(), url, handler); |
| try { |
| if (channel != null) { |
| channels.put(NetUtils.toAddressString((InetSocketAddress) ctx.channel().remoteAddress()), channel); |
| } |
| handler.connected(channel); |
| } finally { |
| NettyChannel.removeChannelIfDisconnected(ctx.channel()); |
| } |
| } |
| |
| @Override |
| public void channelInactive(ChannelHandlerContext ctx) throws Exception { |
| NettyChannel channel = NettyChannel.getOrAddChannel(ctx.channel(), url, handler); |
| try { |
| channels.remove(NetUtils.toAddressString((InetSocketAddress) ctx.channel().remoteAddress())); |
| handler.disconnected(channel); |
| } finally { |
| NettyChannel.removeChannelIfDisconnected(ctx.channel()); |
| } |
| } |
| |
| |
| @Override |
| public void disconnect(ChannelHandlerContext ctx, ChannelPromise future) |
| throws Exception { |
| |
| } |
| |
| @Override |
| public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception { |
| NettyChannel channel = NettyChannel.getOrAddChannel(ctx.channel(), url, handler); |
| try { |
| handler.received(channel, msg); |
| } finally { |
| NettyChannel.removeChannelIfDisconnected(ctx.channel()); |
| } |
| } |
| |
| |
| @Override |
| public void write(ChannelHandlerContext ctx, Object msg, ChannelPromise promise) throws Exception { |
| super.write(ctx, msg, promise); |
| NettyChannel channel = NettyChannel.getOrAddChannel(ctx.channel(), url, handler); |
| try { |
| handler.sent(channel, msg); |
| } finally { |
| NettyChannel.removeChannelIfDisconnected(ctx.channel()); |
| } |
| } |
| |
| @Override |
| public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) |
| throws Exception { |
| NettyChannel channel = NettyChannel.getOrAddChannel(ctx.channel(), url, handler); |
| try { |
| handler.caught(channel, cause); |
| } finally { |
| NettyChannel.removeChannelIfDisconnected(ctx.channel()); |
| } |
| } |
| } |