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