/*
* 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.catalina.tribes.transport.bio;
import java.io.IOException;
import java.net.ServerSocket;
import java.net.Socket;
import org.apache.catalina.tribes.io.ObjectReader;
import org.apache.catalina.tribes.transport.AbstractRxTask;
import org.apache.catalina.tribes.transport.ReceiverBase;
import org.apache.catalina.tribes.transport.RxTaskPool;
import org.apache.juli.logging.Log;
import org.apache.juli.logging.LogFactory;
/**
*
* @author Filip Hanik
* @version $Id: BioReceiver.java 1033920 2010-11-11 12:51:35Z markt $
*/
public class BioReceiver extends ReceiverBase implements Runnable {
private static final Log log = LogFactory.getLog(BioReceiver.class);
protected ServerSocket serverSocket;
public BioReceiver() {
// NO-OP
}
/**
*
* @throws IOException
* TODO Implement this org.apache.catalina.tribes.ChannelReceiver method
*/
@Override
public void start() throws IOException {
super.start();
try {
setPool(new RxTaskPool(getMaxThreads(),getMinThreads(),this));
} catch (Exception x) {
log.fatal("ThreadPool can initilzed. Listener not started", x);
if ( x instanceof IOException ) throw (IOException)x;
else throw new IOException(x.getMessage());
}
try {
getBind();
bind();
Thread t = new Thread(this, "BioReceiver");
t.setDaemon(true);
t.start();
} catch (Exception x) {
log.fatal("Unable to start cluster receiver", x);
if ( x instanceof IOException ) throw (IOException)x;
else throw new IOException(x.getMessage());
}
}
@Override
public AbstractRxTask createRxTask() {
return getReplicationThread();
}
protected BioReplicationTask getReplicationThread() {
BioReplicationTask result = new BioReplicationTask(this);
result.setOptions(getWorkerThreadOptions());
result.setUseBufferPool(this.getUseBufferPool());
return result;
}
/**
*
* TODO Implement this org.apache.catalina.tribes.ChannelReceiver method
*/
@Override
public void stop() {
setListen(false);
try {
this.serverSocket.close();
} catch (Exception x) {/* Ignore */}
super.stop();
}
protected void bind() throws IOException {
// allocate an unbound server socket channel
serverSocket = new ServerSocket();
// set the port the server channel will listen to
//serverSocket.bind(new InetSocketAddress(getBind(), getTcpListenPort()));
bind(serverSocket,getPort(),getAutoBind());
}
@Override
public void run() {
try {
listen();
} catch (Exception x) {
log.error("Unable to run replication listener.", x);
}
}
public void listen() throws Exception {
if (doListen()) {
log.warn("ServerSocket already started");
return;
}
setListen(true);
while ( doListen() ) {
Socket socket = null;
if ( getTaskPool().available() < 1 ) {
if ( log.isWarnEnabled() )
log.warn("All BIO server replication threads are busy, unable to handle more requests until a thread is freed up.");
}
BioReplicationTask task = (BioReplicationTask)getTaskPool().getRxTask();
if ( task == null ) continue; //should never happen
try {
socket = serverSocket.accept();
}catch ( Exception x ) {
if ( doListen() ) throw x;
}
if ( !doListen() ) {
task.setDoRun(false);
task.serviceSocket(null,null);
getExecutor().execute(task);
break; //regular shutdown
}
if ( socket == null ) continue;
socket.setReceiveBufferSize(getRxBufSize());
socket.setSendBufferSize(getTxBufSize());
socket.setTcpNoDelay(getTcpNoDelay());
socket.setKeepAlive(getSoKeepAlive());
socket.setOOBInline(getOoBInline());
socket.setReuseAddress(getSoReuseAddress());
socket.setSoLinger(getSoLingerOn(),getSoLingerTime());
socket.setTrafficClass(getSoTrafficClass());
socket.setSoTimeout(getTimeout());
ObjectReader reader = new ObjectReader(socket);
task.serviceSocket(socket,reader);
getExecutor().execute(task);
}//while
}
}