mappingservice/neutron/src/main/java/org/opendaylight/lispflowmapping/neutron/intenthandler/IntentHandlerAsyncExecutorProvider.java

   1 /*
   2  * Copyright (c) 2017 Cisco Systems, Inc.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8 package org.opendaylight.lispflowmapping.neutron.intenthandler;
   9
  10 import com.google.common.util.concurrent.ListeningExecutorService;
  11 import com.google.common.util.concurrent.MoreExecutors;
  12
  13 import java.util.concurrent.Executors;
  14
  15 /**
  16  * Created by Shakib Ahmed on 1/24/17.
  17  */
  18 public class IntentHandlerAsyncExecutorProvider {
  19     private static ListeningExecutorService listeningExecutorService;
  20
  21     private static final int EXTRA_THREADS_TO_HANDLE_VPP_LISTENER = 1;
  22
  23     private static IntentHandlerAsyncExecutorProvider intentHandlerAsyncExecutorProvider;
  24
  25     private IntentHandlerAsyncExecutorProvider() {
  26         listeningExecutorService = MoreExecutors
  27                 .listeningDecorator(Executors.newFixedThreadPool(EXTRA_THREADS_TO_HANDLE_VPP_LISTENER));
  28     }
  29
  30     public static synchronized IntentHandlerAsyncExecutorProvider getInstace() {
  31         if (intentHandlerAsyncExecutorProvider == null) {
  32             intentHandlerAsyncExecutorProvider = new IntentHandlerAsyncExecutorProvider();
  33         }
  34         return intentHandlerAsyncExecutorProvider;
  35     }
  36
  37     public synchronized ListeningExecutorService getExecutor() {
  38         return listeningExecutorService;
  39     }
  40
  41     public void close() {
  42         listeningExecutorService.shutdown();
  43     }
  44 }