/*
* 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.grizzly;
import java.net.InetSocketAddress;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;
import org.glassfish.grizzly.Connection;
import org.glassfish.grizzly.Grizzly;
import org.glassfish.grizzly.GrizzlyFuture;
import org.glassfish.grizzly.attributes.Attribute;
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;
/**
* GrizzlyChannel
*
* @author william.liangf
*/
final class GrizzlyChannel extends AbstractChannel {
private static final Logger logger = LoggerFactory.getLogger(GrizzlyChannel.class);
private static final String CHANNEL_KEY = GrizzlyChannel.class.getName() + ".CHANNEL";
private static final Attribute<GrizzlyChannel> ATTRIBUTE = Grizzly.DEFAULT_ATTRIBUTE_BUILDER.createAttribute(CHANNEL_KEY);
private final Connection<?> connection;
/**
* @param connection
* @param url
* @param handler
*/
private GrizzlyChannel(Connection<?> connection, URL url, ChannelHandler handler){
super(url, handler);
if (connection == null) {
throw new IllegalArgumentException("grizzly connection == null");
}
this.connection = connection;
}
static GrizzlyChannel getOrAddChannel(Connection<?> connection, URL url, ChannelHandler handler) {
if (connection == null) {
return null;
}
GrizzlyChannel ret = ATTRIBUTE.get(connection);
if (ret == null) {
ret = new GrizzlyChannel(connection, url, handler);
if (connection.isOpen()) {
ATTRIBUTE.set(connection, ret);
}
}
return ret;
}
static void removeChannelIfDisconnectd(Connection<?> connection) {
if (connection != null && ! connection.isOpen()) {
ATTRIBUTE.remove(connection);
}
}
public InetSocketAddress getRemoteAddress() {
return (InetSocketAddress) connection.getPeerAddress();
}
public boolean isConnected() {
return connection.isOpen();
}
public InetSocketAddress getLocalAddress() {
return (InetSocketAddress) connection.getLocalAddress();
}
@SuppressWarnings("rawtypes")
public void send(Object message, boolean sent) throws RemotingException {
super.send(message, sent);
int timeout = 0;
try {
GrizzlyFuture future = connection.write(message);
if (sent) {
timeout = getUrl().getPositiveParameter(Constants.TIMEOUT_KEY, Constants.DEFAULT_TIMEOUT);
future.get(timeout, TimeUnit.MILLISECONDS);
}
}
catch (TimeoutException e) {
throw new RemotingException(this, "Failed to send message " + message + " to " + getRemoteAddress()
+ "in timeout(" + timeout + "ms) limit", e);
}
catch (Throwable e) {
throw new RemotingException(this, "Failed to send message " + message + " to " + getRemoteAddress() + ", cause: " + e.getMessage(), e);
}
}
public void close() {
try {
super.close();
} catch (Exception e) {
logger.warn(e.getMessage(), e);
}
try {
removeChannelIfDisconnectd(connection);
} catch (Exception e) {
logger.warn(e.getMessage(), e);
}
try {
if (logger.isInfoEnabled()) {
logger.info("Close grizzly channel " + connection);
}
connection.close();
} catch (Exception e) {
logger.warn(e.getMessage(), e);
}
}
public boolean hasAttribute(String key) {
return getAttribute(key) == null;
}
public Object getAttribute(String key) {
return Grizzly.DEFAULT_ATTRIBUTE_BUILDER.createAttribute(key).get(connection);
}
public void setAttribute(String key, Object value) {
Grizzly.DEFAULT_ATTRIBUTE_BUILDER.createAttribute(key).set(connection, value);
}
public void removeAttribute(String key) {
Grizzly.DEFAULT_ATTRIBUTE_BUILDER.createAttribute(key).remove(connection);
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + ((connection == null) ? 0 : connection.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;
GrizzlyChannel other = (GrizzlyChannel) obj;
if (connection == null) {
if (other.connection != null) return false;
} else if (!connection.equals(other.connection)) return false;
return true;
}
@Override
public String toString() {
return "GrizzlyChannel [connection=" + connection + "]";
}
}