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/*
* 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 org.apache.dubbo.remoting.transport.netty;
import org.apache.dubbo.common.URL;
import org.apache.dubbo.common.logger.ErrorTypeAwareLogger;
import org.apache.dubbo.common.logger.LoggerFactory;
import org.apache.dubbo.remoting.ChannelHandler;
import org.apache.dubbo.remoting.RemotingException;
import org.apache.dubbo.remoting.transport.AbstractChannel;
import org.apache.dubbo.remoting.utils.PayloadDropper;
import org.jboss.netty.channel.ChannelFuture;
import java.net.InetSocketAddress;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
import static org.apache.dubbo.common.constants.CommonConstants.DEFAULT_TIMEOUT;
import static org.apache.dubbo.common.constants.CommonConstants.TIMEOUT_KEY;
import static org.apache.dubbo.common.constants.LoggerCodeConstants.TRANSPORT_FAILED_CLOSE;
/**
* NettyChannel.
*/
final class NettyChannel extends AbstractChannel {
private static final ErrorTypeAwareLogger logger = LoggerFactory.getErrorTypeAwareLogger(NettyChannel.class);
private static final ConcurrentMap CHANNEL_MAP = new ConcurrentHashMap();
private final org.jboss.netty.channel.Channel channel;
private final Map attributes = new ConcurrentHashMap();
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 = CHANNEL_MAP.get(ch);
if (ret == null) {
NettyChannel nc = new NettyChannel(ch, url, handler);
if (ch.isConnected()) {
ret = CHANNEL_MAP.putIfAbsent(ch, nc);
}
if (ret == null) {
ret = nc;
}
}
return ret;
}
static void removeChannelIfDisconnected(org.jboss.netty.channel.Channel ch) {
if (ch != null && !ch.isConnected()) {
CHANNEL_MAP.remove(ch);
}
}
@Override
public InetSocketAddress getLocalAddress() {
return (InetSocketAddress) channel.getLocalAddress();
}
@Override
public InetSocketAddress getRemoteAddress() {
return (InetSocketAddress) channel.getRemoteAddress();
}
@Override
public boolean isConnected() {
return channel.isConnected();
}
@Override
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(TIMEOUT_KEY, 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 " + PayloadDropper.getRequestWithoutData(message) + " to " + getRemoteAddress() + ", cause: " + e.getMessage(), e);
}
if (!success) {
throw new RemotingException(this, "Failed to send message " + PayloadDropper.getRequestWithoutData(message) + " to " + getRemoteAddress()
+ "in timeout(" + timeout + "ms) limit");
}
}
@Override
public void close() {
try {
super.close();
} catch (Exception e) {
logger.warn(TRANSPORT_FAILED_CLOSE, "", "", e.getMessage(), e);
}
try {
removeChannelIfDisconnected(channel);
} catch (Exception e) {
logger.warn(TRANSPORT_FAILED_CLOSE, "", "", e.getMessage(), e);
}
try {
attributes.clear();
} catch (Exception e) {
logger.warn(TRANSPORT_FAILED_CLOSE, "", "", e.getMessage(), e);
}
try {
if (logger.isInfoEnabled()) {
logger.info("Close netty channel " + channel);
}
channel.close();
} catch (Exception e) {
logger.warn(TRANSPORT_FAILED_CLOSE, "", "", e.getMessage(), e);
}
}
@Override
public boolean hasAttribute(String key) {
return attributes.containsKey(key);
}
@Override
public Object getAttribute(String key) {
return attributes.get(key);
}
@Override
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);
}
}
@Override
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;
}
// FIXME: a hack to make org.apache.dubbo.remoting.exchange.support.DefaultFuture.closeChannel work
if (obj instanceof NettyClient) {
NettyClient client = (NettyClient) obj;
return channel.equals(client.getNettyChannel());
}
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 + "]";
}
}