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.apache.aries.blueprint.annotation.service.Reference;
  15 import org.opendaylight.mdsal.binding.api.DataBroker;
  16 import org.opendaylight.mdsal.binding.api.DataTreeModification;
  17 import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
  18 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.FlowCapableNode;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeRef;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.Nodes;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.Node;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.model.topology.inventory.rev131030.InventoryNode;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.model.topology.inventory.rev131030.InventoryNodeBuilder;
  24 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NodeId;
  25 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.NodeBuilder;
  26 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  27 import org.slf4j.Logger;
  28 import org.slf4j.LoggerFactory;
  29
  30 @Singleton
  31 public class NodeChangeListenerImpl extends DataTreeChangeListenerImpl<FlowCapableNode> {
  32     private static final Logger LOG = LoggerFactory.getLogger(NodeChangeListenerImpl.class);
  33
  34     @Inject
  35     public NodeChangeListenerImpl(@Reference final DataBroker dataBroker, final OperationProcessor operationProcessor) {
  36         // TODO: listener on FlowCapableNode. what if node id in Node.class is changed (it won't be caught by this
  37         // listener)
  38         super(operationProcessor, dataBroker,
  39               InstanceIdentifier.builder(Nodes.class).child(Node.class).augmentation(FlowCapableNode.class).build());
  40     }
  41
  42     @Override
  43     public void onDataTreeChanged(final Collection<DataTreeModification<FlowCapableNode>> modifications) {
  44         for (DataTreeModification modification : modifications) {
  45             switch (modification.getRootNode().getModificationType()) {
  46                 case WRITE:
  47                     processAddedNode(modification);
  48                     break;
  49                 case SUBTREE_MODIFIED:
  50                     // NOOP
  51                     break;
  52                 case DELETE:
  53                     processRemovedNode(modification);
  54                     break;
  55                 default:
  56                     throw new IllegalArgumentException(
  57                             "Unhandled modification type: {}" + modification.getRootNode().getModificationType());
  58             }
  59         }
  60     }
  61
  62     @Override
  63     @PreDestroy
  64     public void close() {
  65         super.close();
  66     }
  67
  68     private void processRemovedNode(final DataTreeModification<FlowCapableNode> modification) {
  69         final InstanceIdentifier<FlowCapableNode> iiToNodeInInventory = modification.getRootPath().getRootIdentifier();
  70         final NodeId nodeId = provideTopologyNodeId(iiToNodeInInventory);
  71         final InstanceIdentifier<org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology
  72                 .rev131021.network.topology.topology.Node>
  73                 iiToTopologyRemovedNode = provideIIToTopologyNode(nodeId);
  74         if (iiToTopologyRemovedNode != null) {
  75             operationProcessor.enqueueOperation(manager -> {
  76                 manager.addDeleteOperationToTxChain(LogicalDatastoreType.OPERATIONAL, iiToTopologyRemovedNode);
  77                 TopologyManagerUtil.removeAffectedLinks(nodeId, manager, II_TO_TOPOLOGY);
  78             });
  79         } else {
  80             LOG.debug("Instance identifier to inventory wasn't translated to topology while deleting node.");
  81         }
  82     }
  83
  84     private void processAddedNode(final DataTreeModification<FlowCapableNode> modification) {
  85         final InstanceIdentifier<FlowCapableNode> iiToNodeInInventory = modification.getRootPath().getRootIdentifier();
  86         final NodeId nodeIdInTopology = provideTopologyNodeId(iiToNodeInInventory);
  87         if (nodeIdInTopology != null) {
  88             final InstanceIdentifier<org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology
  89                     .rev131021.network.topology.topology.Node>
  90                     iiToTopologyNode = provideIIToTopologyNode(nodeIdInTopology);
  91             sendToTransactionChain(prepareTopologyNode(nodeIdInTopology, iiToNodeInInventory), iiToTopologyNode);
  92         } else {
  93             LOG.debug("Inventory node key is null. Data can't be written to topology");
  94         }
  95     }
  96
  97     private static org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network
  98             .topology.topology.Node prepareTopologyNode(
  99             final NodeId nodeIdInTopology, final InstanceIdentifier<FlowCapableNode> iiToNodeInInventory) {
 100         final InventoryNode inventoryNode = new InventoryNodeBuilder()
 101                 .setInventoryNodeRef(new NodeRef(iiToNodeInInventory.firstIdentifierOf(Node.class))).build();
 102
 103         final NodeBuilder topologyNodeBuilder = new NodeBuilder();
 104         topologyNodeBuilder.setNodeId(nodeIdInTopology);
 105         topologyNodeBuilder.addAugmentation(InventoryNode.class, inventoryNode);
 106
 107         return topologyNodeBuilder.build();
 108     }
 109
 110 }