| /*
|
| * 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 java.util.concurrent.ConcurrentMap; |
| |
| import org.jboss.netty.channel.ChannelFuture; |
| |
| import com.alibaba.dubbo.common.Constants; |
| import com.alibaba.dubbo.common.URL; |
| import com.alibaba.dubbo.common.logger.Logger; |
| import com.alibaba.dubbo.common.logger.LoggerFactory; |
| import com.alibaba.dubbo.remoting.ChannelHandler; |
| import com.alibaba.dubbo.remoting.RemotingException; |
| import com.alibaba.dubbo.remoting.transport.AbstractChannel; |
| |
| /** |
| * NettyChannel. |
| * |
| * @author qian.lei |
| * @author william.liangf |
| */ |
| final class NettyChannel extends AbstractChannel { |
| |
| private static final Logger logger = LoggerFactory.getLogger(NettyChannel.class); |
| |
| private static final ConcurrentMap<org.jboss.netty.channel.Channel, NettyChannel> channelMap = new ConcurrentHashMap<org.jboss.netty.channel.Channel, NettyChannel>(); |
| |
| private final org.jboss.netty.channel.Channel channel; |
| |
| private final Map<String, Object> attributes = new ConcurrentHashMap<String, Object>(); |
| |
| private NettyChannel(org.jboss.netty.channel.Channel channel, URL url, ChannelHandler handler){ |
| super(url, handler); |
| if (channel == null) { |
| throw new IllegalArgumentException("netty channel == null;"); |
| } |
| this.channel = channel; |
| } |
| |
| static NettyChannel getOrAddChannel(org.jboss.netty.channel.Channel ch, URL url, ChannelHandler handler) { |
| if (ch == null) { |
| return null; |
| } |
| NettyChannel ret = channelMap.get(ch); |
| if (ret == null) { |
| NettyChannel nc = new NettyChannel(ch, url, handler); |
| if (ch.isConnected()) { |
| ret = channelMap.putIfAbsent(ch, nc); |
| } |
| if (ret == null) { |
| ret = nc; |
| } |
| } |
| return ret; |
| } |
| |
| static void removeChannelIfDisconnected(org.jboss.netty.channel.Channel ch) { |
| if (ch != null && ! ch.isConnected()) { |
| channelMap.remove(ch); |
| } |
| } |
| |
| public InetSocketAddress getLocalAddress() { |
| return (InetSocketAddress) channel.getLocalAddress(); |
| } |
| |
| public InetSocketAddress getRemoteAddress() { |
| return (InetSocketAddress) channel.getRemoteAddress(); |
| } |
| |
| public boolean isConnected() { |
| return channel.isConnected(); |
| } |
| |
| public void send(Object message, boolean sent) throws RemotingException { |
| super.send(message, sent); |
| |
| boolean success = true; |
| int timeout = 0; |
| try { |
| ChannelFuture future = channel.write(message); |
| if (sent) { |
| timeout = getUrl().getPositiveParameter(Constants.TIMEOUT_KEY, Constants.DEFAULT_TIMEOUT); |
| success = future.await(timeout);
|
| }
|
| Throwable cause = future.getCause();
|
| if (cause != null) {
|
| throw cause;
|
| } |
| } catch (Throwable e) { |
| throw new RemotingException(this, "Failed to send message " + message + " to " + getRemoteAddress() + ", cause: " + e.getMessage(), e); |
| } |
| |
| if(! success) {
|
| throw new RemotingException(this, "Failed to send message " + message + " to " + getRemoteAddress() |
| + "in timeout(" + timeout + "ms) limit"); |
| } |
| } |
| |
| public void close() { |
| try { |
| super.close(); |
| } catch (Exception e) { |
| logger.warn(e.getMessage(), e); |
| } |
| try { |
| removeChannelIfDisconnected(channel); |
| } catch (Exception e) { |
| logger.warn(e.getMessage(), e); |
| } |
| try { |
| attributes.clear(); |
| } catch (Exception e) { |
| logger.warn(e.getMessage(), e); |
| } |
| try { |
| if (logger.isInfoEnabled()) { |
| logger.info("Close netty channel " + channel); |
| } |
| channel.close(); |
| } catch (Exception e) { |
| logger.warn(e.getMessage(), e); |
| } |
| } |
| |
| public boolean hasAttribute(String key) { |
| return attributes.containsKey(key); |
| } |
| |
| public Object getAttribute(String key) { |
| return attributes.get(key); |
| } |
| |
| public void setAttribute(String key, Object value) { |
| if (value == null) { // The null value unallowed in the ConcurrentHashMap. |
| attributes.remove(key); |
| } else { |
| attributes.put(key, value); |
| } |
| } |
| |
| public void removeAttribute(String key) { |
| attributes.remove(key); |
| } |
| |
| @Override |
| public int hashCode() { |
| final int prime = 31; |
| int result = 1; |
| result = prime * result + ((channel == null) ? 0 : channel.hashCode()); |
| return result; |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (this == obj) return true; |
| if (obj == null) return false; |
| if (getClass() != obj.getClass()) return false; |
| NettyChannel other = (NettyChannel) obj; |
| if (channel == null) { |
| if (other.channel != null) return false; |
| } else if (!channel.equals(other.channel)) return false; |
| return true; |
| } |
| |
| @Override |
| public String toString() { |
| return "NettyChannel [channel=" + channel + "]"; |
| } |
| |
| } |