opendaylight/md-sal/samples/clustering-test-app/provider/src/main/java/org/opendaylight/controller/clustering/it/provider/CarDataTreeChangeListener.java

   1 /*
   2  * Copyright (c) 2016 Brocade Communications Systems, Inc. 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.controller.clustering.it.provider;
   9
  10 import org.opendaylight.mdsal.binding.api.DataObjectModification;
  11 import org.opendaylight.mdsal.binding.api.DataObjectModification.ModificationType;
  12 import org.opendaylight.mdsal.binding.api.DataTreeChangeListener;
  13 import org.opendaylight.mdsal.binding.api.DataTreeModification;
  14 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.controller.config.sal.clustering.it.car.rev140818.Cars;
  15 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  16 import org.slf4j.Logger;
  17 import org.slf4j.LoggerFactory;
  18
  19 /**
  20  * Provides a basic DTCL implementation for performance testing reasons.  Emits a rudimentary
  21  * summary of the changes that occurred.
  22  *
  23  * @author Ryan Goulding (ryandgoulding@gmail.com)
  24  */
  25 public class CarDataTreeChangeListener implements DataTreeChangeListener<Cars> {
  26     private static final Logger LOG = LoggerFactory.getLogger(CarDataTreeChangeListener.class);
  27
  28     @java.lang.Override
  29     public void onDataTreeChanged(final java.util.Collection<DataTreeModification<Cars>> changes) {
  30         if (LOG.isTraceEnabled()) {
  31             for (DataTreeModification<Cars> change : changes) {
  32                 outputChanges(change);
  33             }
  34         }
  35     }
  36
  37     private static void outputChanges(final DataTreeModification<Cars> change) {
  38         final DataObjectModification<Cars> rootNode = change.getRootNode();
  39         final ModificationType modificationType = rootNode.getModificationType();
  40         final InstanceIdentifier<Cars> rootIdentifier = change.getRootPath().getRootIdentifier();
  41         switch (modificationType) {
  42             case WRITE:
  43             case SUBTREE_MODIFIED: {
  44                 LOG.trace("onDataTreeChanged - Cars config with path {} was added or changed from {} to {}",
  45                         rootIdentifier, rootNode.getDataBefore(), rootNode.getDataAfter());
  46                 break;
  47             }
  48             case DELETE: {
  49                 LOG.trace("onDataTreeChanged - Cars config with path {} was deleted", rootIdentifier);
  50                 break;
  51             }
  52             default: {
  53                 LOG.trace("onDataTreeChanged called with unknown modificationType: {}", modificationType);
  54                 break;
  55             }
  56         }
  57     }
  58 }