2 * ============LICENSE_START=======================================================
4 * ================================================================================
5 * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
6 * ================================================================================
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
18 * ============LICENSE_END=========================================================
21 package org.openecomp.sdc.be.components.distribution.engine;
23 import com.google.common.util.concurrent.ThreadFactoryBuilder;
24 import org.openecomp.sdc.be.config.DistributionEngineConfiguration.DistributionNotificationTopicConfig;
25 import org.openecomp.sdc.common.log.wrappers.Logger;
27 import java.util.concurrent.ExecutorService;
28 import java.util.concurrent.SynchronousQueue;
29 import java.util.concurrent.ThreadFactory;
30 import java.util.concurrent.ThreadPoolExecutor;
31 import java.util.concurrent.TimeUnit;
33 public class NotificationExecutorService {
35 private static final Logger logger = Logger.getLogger(NotificationExecutorService.class.getName());
37 public ExecutorService createExcecutorService(DistributionNotificationTopicConfig distributionNotificationTopic) {
39 Integer minThreadPoolSize = distributionNotificationTopic.getMinThreadPoolSize();
40 if (minThreadPoolSize == null) {
41 minThreadPoolSize = 0;
44 Integer maxThreadPoolSize = distributionNotificationTopic.getMaxThreadPoolSize();
45 if (maxThreadPoolSize == null) {
46 maxThreadPoolSize = 10;
49 ThreadFactoryBuilder threadFactoryBuilder = new ThreadFactoryBuilder();
50 threadFactoryBuilder.setNameFormat("distribution-notification-thread-%d");
51 ThreadFactory threadFactory = threadFactoryBuilder.build();
53 return new ThreadPoolExecutor(minThreadPoolSize, maxThreadPoolSize, 60L, TimeUnit.SECONDS, new SynchronousQueue<>(), threadFactory);
56 public void shutdownAndAwaitTermination(ExecutorService pool, long maxTimeToWait) {
58 logger.debug("shutdown NotificationExecutorService");
59 pool.shutdown(); // Disable new tasks from being submitted
61 // Wait a while for existing tasks to terminate
62 if (!pool.awaitTermination(maxTimeToWait, TimeUnit.SECONDS)) {
63 pool.shutdownNow(); // Cancel currently executing tasks
64 // Wait a while for tasks to respond to being cancelled
65 if (!pool.awaitTermination(maxTimeToWait, TimeUnit.SECONDS)) {
66 logger.debug("Failed to close executor service");
69 } catch (InterruptedException ie) {
70 // (Re-)Cancel if current thread also interrupted
72 // Preserve interrupt status
73 Thread.currentThread().interrupt();