com.ibm.jbatch.container.services.impl.BoundedThreadPoolServiceImpl Maven / Gradle / Ivy
/*
* Copyright 2013 International Business Machines Corp.
*
* See the NOTICE file distributed with this work for additional information
* regarding copyright ownership. 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 com.ibm.jbatch.container.services.impl;
import java.util.concurrent.BlockingQueue;
import java.util.concurrent.LinkedBlockingQueue;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.TimeUnit;
import java.util.logging.Level;
import java.util.logging.Logger;
import com.ibm.jbatch.container.exception.BatchContainerServiceException;
import com.ibm.jbatch.container.util.BatchContainerConstants;
import com.ibm.jbatch.spi.services.IBatchConfig;
public class BoundedThreadPoolServiceImpl extends AbstractThreadPoolServiceImpl implements BatchContainerConstants {
private final static String sourceClass = BoundedThreadPoolServiceImpl.class.getName();
private final static Logger logger = Logger.getLogger(sourceClass);
public BoundedThreadPoolServiceImpl() {
super();
}
private String defaultMaxThreadPoolSize = "5";
int idleThreadTimeout = 900; //threadPoolConfig.getIdleThreadTimeout();
int maxQueueSize = 4096; //threadPoolConfig.getMaxQueueSize();
int minThreadPoolSize = 3; // threadPoolConfig.getMinThreadPoolSize();
@Override
public void init(IBatchConfig batchConfig)
throws BatchContainerServiceException {
String method = "init";
if(logger.isLoggable(Level.FINER)) { logger.entering(sourceClass, method); }
String maxThreadPoolSizeStr = batchConfig.getConfigProperties().
getProperty(BOUNDED_THREADPOOL_MAX_POOL_SIZE, defaultMaxThreadPoolSize);
int maxThreadPoolSize = Integer.parseInt(maxThreadPoolSizeStr);
if(logger.isLoggable(Level.FINE)) {
logger.fine("Glassfish thread pool settings: (" + minThreadPoolSize + "," + maxThreadPoolSize + ","
+ idleThreadTimeout + "," + TimeUnit.SECONDS + "," + maxQueueSize + ")");
}
BlockingQueue queue = null;
if (maxQueueSize == -1) {
queue = new LinkedBlockingQueue();
} else {
queue = new LinkedBlockingQueue(maxQueueSize);
}
executorService = new ThreadPoolExecutor(minThreadPoolSize, maxThreadPoolSize, idleThreadTimeout, TimeUnit.SECONDS, queue);
if(logger.isLoggable(Level.FINER)) { logger.exiting(sourceClass, method); }
}
}