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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;
import org.apache.dubbo.common.URL;
import org.apache.dubbo.remoting.Channel;
import org.apache.dubbo.remoting.ChannelHandler;
import org.apache.dubbo.remoting.Constants;
import org.apache.dubbo.remoting.Endpoint;
import org.apache.dubbo.remoting.RemotingException;
/**
* AbstractPeer
*/
public abstract class AbstractPeer implements Endpoint, ChannelHandler {
private final ChannelHandler handler;
private volatile URL url;
// closing closed means the process is being closed and close is finished
private volatile boolean closing;
private volatile boolean closed;
public AbstractPeer(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;
}
@Override
public void send(Object message) throws RemotingException {
send(message, url.getParameter(Constants.SENT_KEY, false));
}
@Override
public void close() {
closed = true;
}
@Override
public void close(int timeout) {
close();
}
@Override
public void startClose() {
if (isClosed()) {
return;
}
closing = true;
}
@Override
public URL getUrl() {
return url;
}
protected void setUrl(URL url) {
if (url == null) {
throw new IllegalArgumentException("url == null");
}
this.url = url;
}
@Override
public ChannelHandler getChannelHandler() {
if (handler instanceof ChannelHandlerDelegate) {
return ((ChannelHandlerDelegate) handler).getHandler();
} else {
return handler;
}
}
/**
* @return ChannelHandler
*/
@Deprecated
public ChannelHandler getHandler() {
return getDelegateHandler();
}
/**
* Return the final handler (which may have been wrapped). This method should be distinguished with getChannelHandler() method
*
* @return ChannelHandler
*/
public ChannelHandler getDelegateHandler() {
return handler;
}
@Override
public boolean isClosed() {
return closed;
}
public boolean isClosing() {
return closing && !closed;
}
@Override
public void connected(Channel ch) throws RemotingException {
if (closed) {
return;
}
handler.connected(ch);
}
@Override
public void disconnected(Channel ch) throws RemotingException {
handler.disconnected(ch);
}
@Override
public void sent(Channel ch, Object msg) throws RemotingException {
if (closed) {
return;
}
handler.sent(ch, msg);
}
@Override
public void received(Channel ch, Object msg) throws RemotingException {
if (closed) {
return;
}
handler.received(ch, msg);
}
@Override
public void caught(Channel ch, Throwable ex) throws RemotingException {
handler.caught(ch, ex);
}
}