impl/src/main/java/org/opendaylight/vcpe/impl/UniDataChangeListener.java

   1 /*
   2  * Copyright (c) 2015 CableLabs 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.vcpe.impl;
   9
  10 import java.util.HashMap;
  11 import java.util.Map;
  12
  13 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  14 import org.opendaylight.controller.md.sal.binding.api.DataChangeListener;
  15 import org.opendaylight.controller.md.sal.common.api.data.AsyncDataBroker.DataChangeScope;
  16 import org.opendaylight.controller.md.sal.common.api.data.AsyncDataChangeEvent;
  17 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  18 import org.opendaylight.vcpe.api.IVcpeDataChangeListener;
  19 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  20 import org.opendaylight.yangtools.yang.binding.DataObject;
  21 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  22 import org.slf4j.Logger;
  23 import org.slf4j.LoggerFactory;
  24
  25 public class UniDataChangeListener implements IVcpeDataChangeListener {
  26
  27     private static final Logger LOG = LoggerFactory.getLogger(UniDataChangeListener.class);
  28
  29     private Map<String, ListenerRegistration<DataChangeListener>> listeners;
  30     private DataBroker dataBroker;
  31
  32     public UniDataChangeListener(DataBroker dataBroker) {
  33         this.dataBroker = dataBroker;
  34         listeners = new HashMap<String, ListenerRegistration<DataChangeListener>>();
  35         ListenerRegistration<DataChangeListener> uniListener = dataBroker.registerDataChangeListener(
  36                 LogicalDatastoreType.CONFIGURATION, VcpeMapper.getUnisIid()
  37                 , this, DataChangeScope.SUBTREE);
  38         // We want to listen for operational store changes on the ovsdb:1 network topology
  39         // because this is when we know Southbound has successfully connected to the
  40         // OVS instance.
  41         ListenerRegistration<DataChangeListener> ovsdbListener = dataBroker.registerDataChangeListener(
  42                 LogicalDatastoreType.OPERATIONAL, VcpeMapper.getOvsdbTopologyIdentifier()
  43                 , this, DataChangeScope.SUBTREE);
  44         listeners.put("uni", uniListener);
  45         listeners.put("ovsdb", ovsdbListener);
  46
  47     }
  48
  49     @Override
  50     public void onDataChanged(
  51             AsyncDataChangeEvent<InstanceIdentifier<?>, DataObject> changes) {
  52         create(changes.getCreatedData());
  53         update(changes.getUpdatedData());
  54         delete(changes);
  55     }
  56
  57     @Override
  58     public void create(Map<InstanceIdentifier<?>, DataObject> changes) {
  59     }
  60
  61     @Override
  62     public void update(Map<InstanceIdentifier<?>, DataObject> changes) {
  63     }
  64
  65     @Override
  66     public void delete(
  67             AsyncDataChangeEvent<InstanceIdentifier<?>, DataObject> changes) {
  68         // TODO implement delete, verify old data versus new data
  69     }
  70
  71     @Override
  72     public void close() throws Exception {
  73         for (Map.Entry<String, ListenerRegistration<DataChangeListener>> entry : listeners.entrySet()) {
  74             ListenerRegistration<DataChangeListener> value = entry.getValue();
  75             if (value != null) {
  76                 value.close();
  77             }
  78         }
  79     }
  80 }