vpnservice/fcapsapplication/fcapsapplication-impl/src/main/java/org/opendaylight/vpnservice/fcapsapp/performancecounter/NodeConnectorEventListener.java

   1 /*
   2  * Copyright (c) 2016 Ericsson India Global Services Pvt Ltd. 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.vpnservice.fcapsapp.performancecounter;
   9
  10 import org.opendaylight.controller.md.sal.binding.api.*;
  11 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.FlowCapableNodeConnector;
  12 import org.opendaylight.yangtools.yang.binding.DataObject;
  13 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  14 import java.util.Collection;
  15
  16 public abstract  class NodeConnectorEventListener <T extends DataObject> implements ClusteredDataTreeChangeListener<T>,AutoCloseable,FlowCapableNodeConnectorCommitter<T> {
  17     NodeConnectorEventListener(Class<FlowCapableNodeConnector> flowCapableNodeConnectorClass) {
  18     }
  19
  20     @Override
  21     public void onDataTreeChanged(Collection<DataTreeModification<T>> changes) {
  22         for (DataTreeModification<T> change : changes) {
  23             final InstanceIdentifier<T> key = change.getRootPath().getRootIdentifier();
  24             final DataObjectModification<T> mod = change.getRootNode();
  25             final InstanceIdentifier<FlowCapableNodeConnector> nodeConnIdent =
  26                     key.firstIdentifierOf(FlowCapableNodeConnector.class);
  27
  28             switch (mod.getModificationType()) {
  29                 case DELETE:
  30                     remove(key, mod.getDataBefore(), nodeConnIdent);
  31                     break;
  32                 case SUBTREE_MODIFIED:
  33                     update(key, mod.getDataBefore(), mod.getDataAfter(), nodeConnIdent);
  34                     break;
  35                 case WRITE:
  36                     if (mod.getDataBefore() == null) {
  37                         add(key, mod.getDataAfter(), nodeConnIdent);
  38                     } else {
  39                         update(key, mod.getDataBefore(), mod.getDataAfter(), nodeConnIdent);
  40                     }
  41                     break;
  42
  43
  44                 default:
  45                     throw new IllegalArgumentException("Unhandled modification type " + mod.getModificationType());
  46             }
  47         }
  48     }
  49
  50     @Override
  51     public void close() throws Exception {
  52     }
  53 }