/**
* 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.openejb.server;
import java.util.concurrent.Executor;
import java.util.concurrent.LinkedBlockingQueue;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.ThreadFactory;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicBoolean;
import org.apache.openejb.util.LogCategory;
import org.apache.openejb.util.Logger;
import org.apache.openejb.loader.Options;
import org.apache.openejb.loader.SystemInstance;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.Socket;
import java.util.Properties;
public class ServicePool implements ServerService {
private static final Logger log = Logger.getInstance(LogCategory.SERVICEPOOL, "org.apache.openejb.util.resources");
private final ServerService next;
private final Executor executor;
private final ThreadPoolExecutor threadPool;
private final AtomicBoolean stop = new AtomicBoolean();
public ServicePool(ServerService next, String name, Properties properties) {
this(next, name, new Options(properties).get("threads", 100));
}
public ServicePool(ServerService next, final String name, int threads) {
this.next = next;
final int keepAliveTime = (1000 * 60 * 5);
threadPool = new ThreadPoolExecutor(threads, threads, keepAliveTime, TimeUnit.MILLISECONDS, new LinkedBlockingQueue());
threadPool.setThreadFactory(new ThreadFactory() {
private volatile int id = 0;
public Thread newThread(Runnable arg0) {
Thread thread = new Thread(arg0, name + " " + getNextID());
return thread;
}
private int getNextID() {
return id++;
}
});
executor = threadPool;
SystemInstance.get().setComponent(ServicePool.class, this);
}
public ServicePool(ServerService next, Executor executor) {
this.next = next;
this.executor = executor;
this.threadPool = null;
}
public ThreadPoolExecutor getThreadPool() {
return threadPool;
}
public void service(InputStream in, OutputStream out) throws ServiceException, IOException {
}
public void service(final Socket socket) throws ServiceException, IOException {
final Runnable service = new Runnable() {
public void run() {
try {
if (stop.get()) return;
next.service(socket);
} catch (SecurityException e) {
log.error("Security error: " + e.getMessage(), e);
} catch (Throwable e) {
log.error("Unexpected error", e);
} finally {
try {
// Once the thread is done with the socket, clean it up
// The ServiceDaemon does not close the sockets as it is
// single threaded and only accepts sockets and then
// hands them off to be proceeceed. As the thread doing
// that processing it is our job to close the socket
// when we are finished with it.
if (socket != null) {
socket.close();
}
} catch (Throwable t) {
log.warning("Error while closing connection with client", t);
}
}
}
};
final ClassLoader tccl = Thread.currentThread().getContextClassLoader();
Runnable ctxCL = new Runnable() {
public void run() {
ClassLoader cl = Thread.currentThread().getContextClassLoader();
Thread.currentThread().setContextClassLoader(tccl);
try {
service.run();
} finally {
Thread.currentThread().setContextClassLoader(cl);
}
}
};
executor.execute(ctxCL);
}
/**
* Pulls out the access log information
*
* @param props
* @throws ServiceException
*/
public void init(Properties props) throws Exception {
// Do our stuff
// Then call the next guy
next.init(props);
}
public void start() throws ServiceException {
// Do our stuff
// Then call the next guy
next.start();
}
public void stop() throws ServiceException {
// Do our stuff
// Then call the next guy
next.stop();
}
/**
* Gets the name of the service.
* Used for display purposes only
*/
public String getName() {
return next.getName();
}
/**
* Gets the ip number that the
* daemon is listening on.
*/
public String getIP() {
return next.getIP();
}
/**
* Gets the port number that the
* daemon is listening on.
*/
public int getPort() {
return next.getPort();
}
}