/**
*
* Copyright 2004 Protique Ltd
*
* 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 org.activemq.util;
import EDU.oswego.cs.dl.util.concurrent.Executor;
import EDU.oswego.cs.dl.util.concurrent.PooledExecutor;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.activemq.service.Service;
import javax.jms.JMSException;
/**
* A helper class for working with {@link Executor} objects
*
* @version $Revision: 1.1.1.1 $
*/
public class ExecutorHelper {
private static final Log log = LogFactory.getLog(ExecutorHelper.class);
/**
* A helper method to stop the execution of an executor
*
* @param executor the executor or null if one is not created yet
*/
public static void stopExecutor(Executor executor) throws InterruptedException, JMSException {
if (executor instanceof Service) {
Service service = (Service) executor;
service.stop();
}
else if (executor instanceof PooledExecutor) {
PooledExecutor pe = (PooledExecutor) executor;
pe.shutdownAfterProcessingCurrentlyQueuedTasks();
//pe.shutdownNow();
// Wait up to 5 seconds of the threads to shutdown..
pe.awaitTerminationAfterShutdown(1000*5);
}
else if (executor != null) {
log.warn("Don't know how to cleanly close down the given executor: " + executor
+ ". Consider deriving from this class to implement the Service interface to shut down cleanly");
}
}
}