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/*-
* ============LICENSE_START=======================================================
* SDC
* ================================================================================
* Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* 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.
* ============LICENSE_END=========================================================
*/
package org.openecomp.sdc.be.components.distribution.engine;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.SynchronousQueue;
import java.util.concurrent.ThreadFactory;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.TimeUnit;
import org.openecomp.sdc.be.config.DistributionEngineConfiguration.DistributionNotificationTopicConfig;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.google.common.util.concurrent.ThreadFactoryBuilder;
public class NotificationExecutorService {
private static Logger logger = LoggerFactory.getLogger(NotificationExecutorService.class.getName());
public ExecutorService createExcecutorService(DistributionNotificationTopicConfig distributionNotificationTopic) {
Integer minThreadPoolSize = distributionNotificationTopic.getMinThreadPoolSize();
if (minThreadPoolSize == null) {
minThreadPoolSize = 0;
}
Integer maxThreadPoolSize = distributionNotificationTopic.getMaxThreadPoolSize();
if (maxThreadPoolSize == null) {
maxThreadPoolSize = 10;
}
ThreadFactoryBuilder threadFactoryBuilder = new ThreadFactoryBuilder();
threadFactoryBuilder.setNameFormat("distribution-notification-thread-%d");
ThreadFactory threadFactory = threadFactoryBuilder.build();
ExecutorService executorService = new ThreadPoolExecutor(minThreadPoolSize, maxThreadPoolSize, 60L, TimeUnit.SECONDS, new SynchronousQueue<Runnable>(), threadFactory);
return executorService;
}
public void shutdownAndAwaitTermination(ExecutorService pool, long maxTimeToWait) {
logger.debug("shutdown NotificationExecutorService");
pool.shutdown(); // Disable new tasks from being submitted
try {
// Wait a while for existing tasks to terminate
if (!pool.awaitTermination(maxTimeToWait, TimeUnit.SECONDS)) {
pool.shutdownNow(); // Cancel currently executing tasks
// Wait a while for tasks to respond to being cancelled
if (!pool.awaitTermination(maxTimeToWait, TimeUnit.SECONDS)) {
logger.debug("Failed to close executor service");
}
}
} catch (InterruptedException ie) {
// (Re-)Cancel if current thread also interrupted
pool.shutdownNow();
// Preserve interrupt status
Thread.currentThread().interrupt();
}
}
}
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