applications/topology-manager/src/main/java/org/opendaylight/openflowplugin/applications/topology/manager/DataChangeListenerImpl.java

   1 /**
   2  * Copyright (c) 2015 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 package org.opendaylight.openflowplugin.applications.topology.manager;
   9
  10 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.Node;
  11 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.NodeKey;
  12 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NodeId;
  13
  14 import org.slf4j.Logger;
  15 import org.slf4j.LoggerFactory;
  16 import org.opendaylight.yangtools.yang.binding.DataObject;
  17 import org.opendaylight.controller.md.sal.binding.api.ReadWriteTransaction;
  18 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NetworkTopology;
  19 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.TopologyId;
  20 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.Topology;
  21 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.TopologyKey;
  22 import org.opendaylight.controller.md.sal.common.api.data.AsyncDataBroker;
  23 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  24 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  25 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  26 import org.opendaylight.controller.md.sal.binding.api.DataChangeListener;
  27 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  28
  29 public abstract class DataChangeListenerImpl implements DataChangeListener, AutoCloseable {
  30
  31     private final static Logger LOG = LoggerFactory.getLogger(DataChangeListenerImpl.class);
  32     protected final ListenerRegistration<DataChangeListener> dataChangeListenerRegistration;
  33     protected OperationProcessor operationProcessor;
  34
  35     /**
  36      * instance identifier to Node in network topology model (yangtools)
  37      */
  38     protected static final InstanceIdentifier<Topology> II_TO_TOPOLOGY =
  39             InstanceIdentifier
  40             .builder(NetworkTopology.class)
  41             .child(Topology.class, new TopologyKey(new TopologyId(FlowCapableTopologyProvider.TOPOLOGY_ID)))
  42             .build();
  43
  44
  45     /**
  46      *
  47      */
  48     public DataChangeListenerImpl(final OperationProcessor operationProcessor, final DataBroker dataBroker,
  49             final InstanceIdentifier<?> ii) {
  50         dataChangeListenerRegistration = dataBroker.registerDataChangeListener(LogicalDatastoreType.OPERATIONAL, ii,
  51                 this, AsyncDataBroker.DataChangeScope.BASE);
  52         this.operationProcessor = operationProcessor;
  53     }
  54
  55     @Override
  56     public void close() throws Exception {
  57         dataChangeListenerRegistration.close();
  58     }
  59
  60     protected <T extends DataObject> void sendToTransactionChain(final T node,
  61             final InstanceIdentifier<T> iiToTopologyNode) {
  62         operationProcessor.enqueueOperation(new TopologyOperation() {
  63
  64             @Override
  65             public void applyOperation(ReadWriteTransaction transaction) {
  66                 transaction.merge(LogicalDatastoreType.OPERATIONAL, iiToTopologyNode, node, true);
  67             }
  68         });
  69     }
  70
  71     protected InstanceIdentifier<org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node> provideIIToTopologyNode(
  72             final NodeId nodeIdInTopology) {
  73         org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.NodeKey nodeKeyInTopology = new org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.NodeKey(
  74                 nodeIdInTopology);
  75         return II_TO_TOPOLOGY
  76                 .builder()
  77                 .child(org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node.class,
  78                         nodeKeyInTopology).build();
  79     }
  80
  81     protected NodeId provideTopologyNodeId(InstanceIdentifier<?> iiToNodeInInventory) {
  82         final NodeKey inventoryNodeKey = iiToNodeInInventory.firstKeyOf(Node.class, NodeKey.class);
  83         if (inventoryNodeKey != null) {
  84             return new NodeId(inventoryNodeKey.getId().getValue());
  85         }
  86         return null;
  87     }
  88
  89 }