applications/topology-manager/src/main/java/org/opendaylight/openflowplugin/applications/topology/manager/NodeChangeListenerImpl.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 java.util.Collection;
  11 import javax.annotation.PreDestroy;
  12 import javax.inject.Inject;
  13 import javax.inject.Singleton;
  14 import org.opendaylight.mdsal.binding.api.DataBroker;
  15 import org.opendaylight.mdsal.binding.api.DataTreeModification;
  16 import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
  17 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.FlowCapableNode;
  18 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeRef;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.Nodes;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.Node;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.model.topology.inventory.rev131030.InventoryNodeBuilder;
  22 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NodeId;
  23 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.NodeBuilder;
  24 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  25 import org.slf4j.Logger;
  26 import org.slf4j.LoggerFactory;
  27
  28 @Singleton
  29 public class NodeChangeListenerImpl extends DataTreeChangeListenerImpl<FlowCapableNode> {
  30     private static final Logger LOG = LoggerFactory.getLogger(NodeChangeListenerImpl.class);
  31
  32     @Inject
  33     public NodeChangeListenerImpl(final DataBroker dataBroker, final OperationProcessor operationProcessor) {
  34         // TODO: listener on FlowCapableNode. what if node id in Node.class is changed (it won't be caught by this
  35         // listener)
  36         super(operationProcessor, dataBroker,
  37               InstanceIdentifier.builder(Nodes.class).child(Node.class).augmentation(FlowCapableNode.class).build());
  38     }
  39
  40     @Override
  41     public void onDataTreeChanged(final Collection<DataTreeModification<FlowCapableNode>> modifications) {
  42         for (DataTreeModification<FlowCapableNode> modification : modifications) {
  43             switch (modification.getRootNode().getModificationType()) {
  44                 case WRITE:
  45                     processAddedNode(modification);
  46                     break;
  47                 case SUBTREE_MODIFIED:
  48                     // NOOP
  49                     break;
  50                 case DELETE:
  51                     processRemovedNode(modification);
  52                     break;
  53                 default:
  54                     throw new IllegalArgumentException(
  55                             "Unhandled modification type: {}" + modification.getRootNode().getModificationType());
  56             }
  57         }
  58     }
  59
  60     @Override
  61     @PreDestroy
  62     public void close() {
  63         super.close();
  64     }
  65
  66     private void processRemovedNode(final DataTreeModification<FlowCapableNode> modification) {
  67         final InstanceIdentifier<FlowCapableNode> iiToNodeInInventory = modification.getRootPath().getRootIdentifier();
  68         final NodeId nodeId = provideTopologyNodeId(iiToNodeInInventory);
  69         final InstanceIdentifier<org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology
  70                 .rev131021.network.topology.topology.Node>
  71                 iiToTopologyRemovedNode = provideIIToTopologyNode(nodeId);
  72         if (iiToTopologyRemovedNode != null) {
  73             operationProcessor.enqueueOperation(manager -> {
  74                 manager.addDeleteOperationToTxChain(LogicalDatastoreType.OPERATIONAL, iiToTopologyRemovedNode);
  75                 TopologyManagerUtil.removeAffectedLinks(nodeId, manager, II_TO_TOPOLOGY);
  76             });
  77         } else {
  78             LOG.debug("Instance identifier to inventory wasn't translated to topology while deleting node.");
  79         }
  80     }
  81
  82     private void processAddedNode(final DataTreeModification<FlowCapableNode> modification) {
  83         final InstanceIdentifier<FlowCapableNode> iiToNodeInInventory = modification.getRootPath().getRootIdentifier();
  84         final NodeId nodeIdInTopology = provideTopologyNodeId(iiToNodeInInventory);
  85         if (nodeIdInTopology != null) {
  86             final InstanceIdentifier<org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology
  87                     .rev131021.network.topology.topology.Node>
  88                     iiToTopologyNode = provideIIToTopologyNode(nodeIdInTopology);
  89             sendToTransactionChain(prepareTopologyNode(nodeIdInTopology, iiToNodeInInventory), iiToTopologyNode);
  90         } else {
  91             LOG.debug("Inventory node key is null. Data can't be written to topology");
  92         }
  93     }
  94
  95     private static org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network
  96             .topology.topology.Node prepareTopologyNode(
  97             final NodeId nodeIdInTopology, final InstanceIdentifier<FlowCapableNode> iiToNodeInInventory) {
  98         return new NodeBuilder()
  99                 .setNodeId(nodeIdInTopology)
 100                 .addAugmentation(new InventoryNodeBuilder()
 101                     .setInventoryNodeRef(new NodeRef(iiToNodeInInventory.firstIdentifierOf(Node.class)))
 102                     .build())
 103                 .build();
 104     }
 105 }