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.Nonnull;
  12 import javax.annotation.PreDestroy;
  13 import javax.inject.Inject;
  14 import javax.inject.Singleton;
  15 import org.apache.aries.blueprint.annotation.service.Reference;
  16 import org.opendaylight.mdsal.binding.api.DataBroker;
  17 import org.opendaylight.mdsal.binding.api.DataTreeModification;
  18 import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.FlowCapableNode;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeRef;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.Nodes;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.Node;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.model.topology.inventory.rev131030.InventoryNode;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.model.topology.inventory.rev131030.InventoryNodeBuilder;
  25 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NodeId;
  26 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.NodeBuilder;
  27 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  28 import org.slf4j.Logger;
  29 import org.slf4j.LoggerFactory;
  30
  31 @Singleton
  32 public class NodeChangeListenerImpl extends DataTreeChangeListenerImpl<FlowCapableNode> {
  33     private static final Logger LOG = LoggerFactory.getLogger(NodeChangeListenerImpl.class);
  34
  35     @Inject
  36     public NodeChangeListenerImpl(@Reference final DataBroker dataBroker, final OperationProcessor operationProcessor) {
  37         // TODO: listener on FlowCapableNode. what if node id in Node.class is changed (it won't be caught by this
  38         // listener)
  39         super(operationProcessor, dataBroker,
  40               InstanceIdentifier.builder(Nodes.class).child(Node.class).augmentation(FlowCapableNode.class).build());
  41     }
  42
  43     @Override
  44     public void onDataTreeChanged(@Nonnull final Collection<DataTreeModification<FlowCapableNode>> modifications) {
  45         for (DataTreeModification modification : modifications) {
  46             switch (modification.getRootNode().getModificationType()) {
  47                 case WRITE:
  48                     processAddedNode(modification);
  49                     break;
  50                 case SUBTREE_MODIFIED:
  51                     // NOOP
  52                     break;
  53                 case DELETE:
  54                     processRemovedNode(modification);
  55                     break;
  56                 default:
  57                     throw new IllegalArgumentException(
  58                             "Unhandled modification type: {}" + modification.getRootNode().getModificationType());
  59             }
  60         }
  61     }
  62
  63     @Override
  64     @PreDestroy
  65     public void close() throws Exception {
  66         super.close();
  67     }
  68
  69     private void processRemovedNode(final DataTreeModification<FlowCapableNode> modification) {
  70         final InstanceIdentifier<FlowCapableNode> iiToNodeInInventory = modification.getRootPath().getRootIdentifier();
  71         final NodeId nodeId = provideTopologyNodeId(iiToNodeInInventory);
  72         final InstanceIdentifier<org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology
  73                 .rev131021.network.topology.topology.Node>
  74                 iiToTopologyRemovedNode = provideIIToTopologyNode(nodeId);
  75         if (iiToTopologyRemovedNode != null) {
  76             operationProcessor.enqueueOperation(manager -> {
  77                 manager.addDeleteOperationToTxChain(LogicalDatastoreType.OPERATIONAL, iiToTopologyRemovedNode);
  78                 TopologyManagerUtil.removeAffectedLinks(nodeId, manager, II_TO_TOPOLOGY);
  79             });
  80         } else {
  81             LOG.debug("Instance identifier to inventory wasn't translated to topology while deleting node.");
  82         }
  83     }
  84
  85     private void processAddedNode(final DataTreeModification<FlowCapableNode> modification) {
  86         final InstanceIdentifier<FlowCapableNode> iiToNodeInInventory = modification.getRootPath().getRootIdentifier();
  87         final NodeId nodeIdInTopology = provideTopologyNodeId(iiToNodeInInventory);
  88         if (nodeIdInTopology != null) {
  89             final InstanceIdentifier<org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology
  90                     .rev131021.network.topology.topology.Node>
  91                     iiToTopologyNode = provideIIToTopologyNode(nodeIdInTopology);
  92             sendToTransactionChain(prepareTopologyNode(nodeIdInTopology, iiToNodeInInventory), iiToTopologyNode);
  93         } else {
  94             LOG.debug("Inventory node key is null. Data can't be written to topology");
  95         }
  96     }
  97
  98     private static org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network
  99             .topology.topology.Node prepareTopologyNode(
 100             final NodeId nodeIdInTopology, final InstanceIdentifier<FlowCapableNode> iiToNodeInInventory) {
 101         final InventoryNode inventoryNode = new InventoryNodeBuilder()
 102                 .setInventoryNodeRef(new NodeRef(iiToNodeInInventory.firstIdentifierOf(Node.class))).build();
 103
 104         final NodeBuilder topologyNodeBuilder = new NodeBuilder();
 105         topologyNodeBuilder.setNodeId(nodeIdInTopology);
 106         topologyNodeBuilder.addAugmentation(InventoryNode.class, inventoryNode);
 107
 108         return topologyNodeBuilder.build();
 109     }
 110
 111 }