mdsalutil/mdsalutil-api/src/main/java/org/opendaylight/genius/datastoreutils/listeners/AbstractAsyncDataTreeChangeListener.java

   1 /*
   2  * Copyright (c) 2017 Ericsson S.A. and others. 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.genius.datastoreutils.listeners;
   9
  10 import java.util.Collection;
  11 import java.util.concurrent.ExecutorService;
  12 import javax.inject.Inject;
  13 import org.opendaylight.controller.md.sal.binding.api.DataTreeChangeListener;
  14 import org.opendaylight.controller.md.sal.binding.api.DataTreeModification;
  15 import org.opendaylight.yangtools.yang.binding.DataObject;
  16
  17 /**
  18  * Abstract class providing some common functionality to specific listeners.
  19  * This listener launches the received notifications in a different thread by
  20  * using the queuing functionality of the {@link ExecutorService}.
  21  *
  22  * @author David Suárez (david.suarez.fuentes@gmail.com)
  23  *
  24  * @param <T>
  25  *            type of the data object the listener is registered to.
  26  */
  27 public abstract class AbstractAsyncDataTreeChangeListener<T extends DataObject>
  28         implements DataTreeChangeListenerActions<T>, DataTreeChangeListener<T> {
  29     private final ExecutorService executorService;
  30
  31     @Inject
  32     public AbstractAsyncDataTreeChangeListener(ExecutorService executorService) {
  33         this.executorService = executorService;
  34     }
  35
  36     @Override
  37     public final void onDataTreeChanged(Collection<DataTreeModification<T>> collection) {
  38         executorService.submit(() -> DataTreeChangeListenerActions.super.onDataTreeChanged(collection));
  39     }
  40 }