location-providers/ne-location-provider/src/main/java/org/opendaylight/groupbasedpolicy/ne/location/provider/EndpointsListener.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.ne.location.provider;
  10
  11 import java.util.Collection;
  12
  13 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  14 import org.opendaylight.controller.md.sal.binding.api.DataTreeChangeListener;
  15 import org.opendaylight.controller.md.sal.binding.api.DataTreeIdentifier;
  16 import org.opendaylight.controller.md.sal.binding.api.DataTreeModification;
  17 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  18 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.base_endpoint.rev160427.Endpoints;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.base_endpoint.rev160427.endpoints.AddressEndpoints;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.base_endpoint.rev160427.endpoints.address.endpoints.AddressEndpoint;
  21 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  22 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  23 import org.slf4j.Logger;
  24 import org.slf4j.LoggerFactory;
  25
  26 public class EndpointsListener implements DataTreeChangeListener<AddressEndpoint>{
  27
  28     private static final Logger LOG = LoggerFactory.getLogger(EndpointsListener.class);
  29
  30     private NeLocationProvider listener;
  31     private ListenerRegistration<EndpointsListener> listenerRegistration;
  32
  33     public EndpointsListener (DataBroker dataBroker, NeLocationProvider listener) {
  34         this.listener = listener;
  35         this.listenerRegistration = dataBroker.registerDataTreeChangeListener(new DataTreeIdentifier<>(LogicalDatastoreType.OPERATIONAL,
  36                 InstanceIdentifier.builder(Endpoints.class)
  37                 .child(AddressEndpoints.class).child(AddressEndpoint.class).build()), this);
  38         LOG.info("NE location provider registered for Endpoints listening");
  39     }
  40
  41     @Override
  42     public void onDataTreeChanged(Collection<DataTreeModification<AddressEndpoint>> changes) {
  43         listener.onEndpointsChange(changes);
  44     }
  45
  46     public void close() {
  47         this.listenerRegistration.close();
  48     }
  49 }