/*
* 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.mina;
import java.net.InetSocketAddress;
import org.apache.mina.common.IoSession;
import org.apache.mina.common.WriteFuture;
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;
/**
* MinaChannel
*
* @author qian.lei
* @author william.liangf
*/
final class MinaChannel extends AbstractChannel {
private static final Logger logger = LoggerFactory.getLogger(MinaChannel.class);
private static final String CHANNEL_KEY = MinaChannel.class.getName() + ".CHANNEL";
private final IoSession session;
private MinaChannel(IoSession session, URL url, ChannelHandler handler){
super(url, handler);
if (session == null) {
throw new IllegalArgumentException("mina session == null");
}
this.session = session;
}
static MinaChannel getOrAddChannel(IoSession session, URL url, ChannelHandler handler) {
if (session == null) {
return null;
}
MinaChannel ret = (MinaChannel) session.getAttribute(CHANNEL_KEY);
if (ret == null) {
ret = new MinaChannel(session, url, handler);
if (session.isConnected()) {
MinaChannel old = (MinaChannel) session.setAttribute(CHANNEL_KEY, ret);
if (old != null) {
session.setAttribute(CHANNEL_KEY, old);
ret = old;
}
}
}
return ret;
}
static void removeChannelIfDisconnectd(IoSession session) {
if (session != null && ! session.isConnected()) {
session.removeAttribute(CHANNEL_KEY);
}
}
public InetSocketAddress getLocalAddress() {
return (InetSocketAddress) session.getLocalAddress();
}
public InetSocketAddress getRemoteAddress() {
return (InetSocketAddress) session.getRemoteAddress();
}
public boolean isConnected() {
return session.isConnected();
}
public void send(Object message, boolean sent) throws RemotingException {
super.send(message, sent);
boolean success = true;
int timeout = 0;
try {
WriteFuture future = session.write(message);
if (sent) {
timeout = getUrl().getPositiveParameter(Constants.TIMEOUT_KEY, Constants.DEFAULT_TIMEOUT);
success = future.join(timeout);
}
} 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 {
removeChannelIfDisconnectd(session);
} catch (Exception e) {
logger.warn(e.getMessage(), e);
}
try {
if (logger.isInfoEnabled()) {
logger.info("CLose mina channel " + session);
}
session.close();
} catch (Exception e) {
logger.warn(e.getMessage(), e);
}
}
public boolean hasAttribute(String key) {
return session.containsAttribute(key);
}
public Object getAttribute(String key) {
return session.getAttribute(key);
}
public void setAttribute(String key, Object value) {
session.setAttribute(key, value);
}
public void removeAttribute(String key) {
session.removeAttribute(key);
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + ((session == null) ? 0 : session.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;
MinaChannel other = (MinaChannel) obj;
if (session == null) {
if (other.session != null) return false;
} else if (!session.equals(other.session)) return false;
return true;
}
@Override
public String toString() {
return "MinaChannel [session=" + session + "]";
}
}