renderers/vpp/src/main/java/org/opendaylight/groupbasedpolicy/renderer/vpp/listener/VppEndpointListener.java

   1 /*
   2  * Copyright (c) 2016 Cisco 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
   9 package org.opendaylight.groupbasedpolicy.renderer.vpp.listener;
  10
  11 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  12 import org.opendaylight.controller.md.sal.binding.api.DataObjectModification;
  13 import org.opendaylight.controller.md.sal.binding.api.DataTreeIdentifier;
  14 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  15 import org.opendaylight.groupbasedpolicy.renderer.vpp.event.VppEndpointConfEvent;
  16 import org.opendaylight.groupbasedpolicy.util.DataTreeChangeHandler;
  17 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.vpp_renderer.rev160425.Config;
  18 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.vpp_renderer.rev160425.config.VppEndpoint;
  19 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  20 import org.slf4j.Logger;
  21 import org.slf4j.LoggerFactory;
  22
  23 import com.google.common.base.Preconditions;
  24 import com.google.common.eventbus.EventBus;
  25
  26 public class VppEndpointListener extends DataTreeChangeHandler<VppEndpoint> {
  27
  28     private static final Logger LOG = LoggerFactory.getLogger(VppEndpointListener.class);
  29     private EventBus eventBus;
  30
  31     public VppEndpointListener(DataBroker dataProvider, EventBus eventBus) {
  32         super(dataProvider);
  33         this.eventBus = Preconditions.checkNotNull(eventBus);
  34         registerDataTreeChangeListener(new DataTreeIdentifier<>(LogicalDatastoreType.CONFIGURATION,
  35                 InstanceIdentifier.builder(Config.class).child(VppEndpoint.class).build()));
  36     }
  37
  38     @Override
  39     protected void onWrite(DataObjectModification<VppEndpoint> rootNode,
  40             InstanceIdentifier<VppEndpoint> rootIdentifier) {
  41         VppEndpointConfEvent event =
  42                 new VppEndpointConfEvent(rootIdentifier, rootNode.getDataBefore(), rootNode.getDataAfter());
  43         LOG.trace("Dispatching event on write: {}", event.getClass());
  44         eventBus.post(event);
  45     }
  46
  47     @Override
  48     protected void onDelete(DataObjectModification<VppEndpoint> rootNode,
  49             InstanceIdentifier<VppEndpoint> rootIdentifier) {
  50         VppEndpointConfEvent event =
  51                 new VppEndpointConfEvent(rootIdentifier, rootNode.getDataBefore(), rootNode.getDataAfter());
  52         LOG.trace("Dispatching event on delete: {}", event.getClass());
  53         eventBus.post(event);
  54     }
  55
  56     @Override
  57     protected void onSubtreeModified(DataObjectModification<VppEndpoint> rootNode,
  58             InstanceIdentifier<VppEndpoint> rootIdentifier) {
  59         VppEndpointConfEvent event =
  60                 new VppEndpointConfEvent(rootIdentifier, rootNode.getDataBefore(), rootNode.getDataAfter());
  61         LOG.trace("Dispatching event on subtree modified: {}", event.getClass());
  62         eventBus.post(event);
  63     }
  64
  65 }