catalog-be/src/main/java/org/openecomp/sdc/be/components/distribution/engine/ExecutorFactory.java

   1 /*-
   2  * ============LICENSE_START=======================================================
   3  * SDC
   4  * ================================================================================
   5  * Copyright (C) 2019 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
  10  *
  11  *      http://www.apache.org/licenses/LICENSE-2.0
  12  *
  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=========================================================
  19  */
  20
  21 package org.openecomp.sdc.be.components.distribution.engine;
  22
  23 import com.google.common.util.concurrent.ThreadFactoryBuilder;
  24 import org.openecomp.sdc.common.log.wrappers.Logger;
  25 import org.slf4j.LoggerFactory;
  26 import org.springframework.stereotype.Component;
  27
  28 import java.lang.Thread.UncaughtExceptionHandler;
  29 import java.util.concurrent.ExecutorService;
  30 import java.util.concurrent.Executors;
  31 import java.util.concurrent.ScheduledExecutorService;
  32 import java.util.concurrent.ThreadFactory;
  33 @Component("executorFactory")
  34 /**
  35  * Allows to create next kinds of single thread executors: SingleThreadExecutor and SingleThreadScheduledExecutor
  36  */
  37 public class ExecutorFactory {
  38
  39     private static final Logger logger = Logger.getLogger(EnvironmentsEngine.class.getName());
  40
  41     public ExecutorService create(String name, UncaughtExceptionHandler exceptionHandler){
  42         logger.info("Going to create single thread executor. ");
  43         ThreadFactory threadFactory = createThreadFactory(name, exceptionHandler);
  44         return Executors.newSingleThreadExecutor(threadFactory);
  45     }
  46
  47     public ScheduledExecutorService createScheduled(String name){
  48         logger.info("Going to create single thread scheduled executor. ");
  49         ThreadFactory threadFactory = createThreadFactory(name,
  50                 (t, e) -> LoggerFactory.getLogger(UncaughtExceptionHandler.class).error("An error occurred: ", e));
  51         return Executors.newSingleThreadScheduledExecutor(threadFactory);
  52     }
  53
  54     private ThreadFactory createThreadFactory(String name, UncaughtExceptionHandler exceptionHandler) {
  55         String nameFormat = name + "-%d";
  56         return new ThreadFactoryBuilder()
  57                 .setThreadFactory(Executors.defaultThreadFactory())
  58                 .setNameFormat(nameFormat)
  59                 .setUncaughtExceptionHandler(exceptionHandler)
  60                 .setDaemon(true)
  61                 .build();
  62     }
  63 }