applications/topology-manager/src/main/java/org/opendaylight/openflowplugin/applications/topology/manager/TerminationPointChangeListenerImpl.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 java.util.Optional;
  12 import java.util.concurrent.ExecutionException;
  13 import javax.annotation.PreDestroy;
  14 import javax.inject.Inject;
  15 import javax.inject.Singleton;
  16 import org.apache.aries.blueprint.annotation.service.Reference;
  17 import org.opendaylight.mdsal.binding.api.DataBroker;
  18 import org.opendaylight.mdsal.binding.api.DataTreeModification;
  19 import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.FlowCapableNodeConnector;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeConnectorRef;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.Nodes;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.node.NodeConnector;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.node.NodeConnectorKey;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.Node;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.model.topology.inventory.rev131030.InventoryNodeConnectorBuilder;
  27 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NodeId;
  28 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.TpId;
  29 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.node.TerminationPoint;
  30 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.node.TerminationPointBuilder;
  31 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.node.TerminationPointKey;
  32 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  33 import org.slf4j.Logger;
  34 import org.slf4j.LoggerFactory;
  35
  36 @Singleton
  37 public class TerminationPointChangeListenerImpl extends DataTreeChangeListenerImpl<FlowCapableNodeConnector> {
  38     private static final Logger LOG = LoggerFactory.getLogger(TerminationPointChangeListenerImpl.class);
  39
  40     @Inject
  41     public TerminationPointChangeListenerImpl(@Reference final DataBroker dataBroker,
  42                                               final OperationProcessor operationProcessor) {
  43         super(operationProcessor, dataBroker,
  44               InstanceIdentifier.builder(Nodes.class).child(Node.class).child(NodeConnector.class)
  45                       .augmentation(FlowCapableNodeConnector.class).build());
  46         this.operationProcessor = operationProcessor;
  47     }
  48
  49     @Override
  50     public void onDataTreeChanged(final Collection<DataTreeModification<FlowCapableNodeConnector>> modifications) {
  51         for (DataTreeModification<FlowCapableNodeConnector> modification : modifications) {
  52             switch (modification.getRootNode().getModificationType()) {
  53                 case WRITE:
  54                     processAddedTerminationPoints(modification);
  55                     break;
  56                 case SUBTREE_MODIFIED:
  57                     processUpdatedTerminationPoints(modification);
  58                     break;
  59                 case DELETE:
  60                     processRemovedTerminationPoints(modification);
  61                     break;
  62                 default:
  63                     throw new IllegalArgumentException(
  64                             "Unhandled modification type: {}" + modification.getRootNode().getModificationType());
  65             }
  66         }
  67     }
  68
  69     @Override
  70     @PreDestroy
  71     public void close() {
  72         super.close();
  73     }
  74
  75     private void processRemovedTerminationPoints(final DataTreeModification<FlowCapableNodeConnector> modification) {
  76         final InstanceIdentifier<FlowCapableNodeConnector> removedNode = modification.getRootPath().getRootIdentifier();
  77         final TpId terminationPointId = provideTopologyTerminationPointId(removedNode);
  78         final InstanceIdentifier<TerminationPoint> iiToTopologyTerminationPoint = provideIIToTopologyTerminationPoint(
  79                 terminationPointId, removedNode);
  80
  81         if (iiToTopologyTerminationPoint != null) {
  82             final InstanceIdentifier<org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology
  83                     .rev131021.network.topology.topology.Node>
  84                     node = iiToTopologyTerminationPoint.firstIdentifierOf(
  85                     org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network
  86                             .topology.topology.Node.class);
  87             operationProcessor.enqueueOperation(manager -> {
  88                 Optional<org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network
  89                         .topology.topology.Node>
  90                         nodeOptional = Optional.empty();
  91                 try {
  92                     nodeOptional = manager.readFromTransaction(LogicalDatastoreType.OPERATIONAL, node).get();
  93                 } catch (InterruptedException | ExecutionException e) {
  94                     LOG.warn("Error occurred when trying to read NodeConnector: {}", e.getMessage());
  95                     LOG.debug("Error occurred when trying to read NodeConnector.. ", e);
  96                 }
  97                 if (nodeOptional.isPresent()) {
  98                     TopologyManagerUtil.removeAffectedLinks(terminationPointId, manager, II_TO_TOPOLOGY);
  99                     manager.addDeleteOperationToTxChain(LogicalDatastoreType.OPERATIONAL,
 100                                                          iiToTopologyTerminationPoint);
 101                 }
 102             });
 103         } else {
 104             LOG.debug(
 105                     "Instance identifier to inventory wasn't translated to topology while deleting termination point.");
 106         }
 107     }
 108
 109     private void processUpdatedTerminationPoints(final DataTreeModification<FlowCapableNodeConnector> modification) {
 110         // TODO Auto-generated method stub
 111     }
 112
 113     private void processAddedTerminationPoints(final DataTreeModification<FlowCapableNodeConnector> modification) {
 114         final InstanceIdentifier<FlowCapableNodeConnector> iiToNodeInInventory = modification.getRootPath()
 115                 .getRootIdentifier();
 116         TpId terminationPointIdInTopology = provideTopologyTerminationPointId(iiToNodeInInventory);
 117         if (terminationPointIdInTopology != null) {
 118             InstanceIdentifier<TerminationPoint> iiToTopologyTerminationPoint = provideIIToTopologyTerminationPoint(
 119                     terminationPointIdInTopology, iiToNodeInInventory);
 120             TerminationPoint point = prepareTopologyTerminationPoint(terminationPointIdInTopology, iiToNodeInInventory);
 121             sendToTransactionChain(point, iiToTopologyTerminationPoint);
 122             removeLinks(modification.getRootNode().getDataAfter(), point);
 123         } else {
 124             LOG.debug("Inventory node connector key is null. Data can't be written to topology termination point");
 125         }
 126     }
 127
 128     private void removeLinks(final FlowCapableNodeConnector flowCapNodeConnector, final TerminationPoint point) {
 129         operationProcessor.enqueueOperation(manager -> {
 130             if (flowCapNodeConnector.getState() != null && flowCapNodeConnector.getState().getLinkDown()
 131                     || flowCapNodeConnector.getConfiguration() != null
 132                         && flowCapNodeConnector.getConfiguration().getPORTDOWN()) {
 133                 TopologyManagerUtil.removeAffectedLinks(point.getTpId(), manager, II_TO_TOPOLOGY);
 134             }
 135         });
 136     }
 137
 138     private static TerminationPoint prepareTopologyTerminationPoint(final TpId terminationPointIdInTopology,
 139                                                                     final
 140                                                                     InstanceIdentifier<FlowCapableNodeConnector>
 141                                                                             iiToNodeInInventory) {
 142         return new TerminationPointBuilder()
 143                 .setTpId(terminationPointIdInTopology)
 144                 .addAugmentation(new InventoryNodeConnectorBuilder()
 145                     .setInventoryNodeConnectorRef(
 146                         new NodeConnectorRef(iiToNodeInInventory.firstIdentifierOf(NodeConnector.class)))
 147                     .build())
 148                 .build();
 149     }
 150
 151     private InstanceIdentifier<TerminationPoint> provideIIToTopologyTerminationPoint(
 152             final TpId terminationPointIdInTopology,
 153             final InstanceIdentifier<FlowCapableNodeConnector> iiToNodeInInventory) {
 154         NodeId nodeIdInTopology = provideTopologyNodeId(iiToNodeInInventory);
 155         if (terminationPointIdInTopology != null && nodeIdInTopology != null) {
 156             InstanceIdentifier<org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology
 157                     .rev131021.network.topology.topology.Node>
 158                     iiToTopologyNode = provideIIToTopologyNode(nodeIdInTopology);
 159             return iiToTopologyNode.builder()
 160                     .child(TerminationPoint.class, new TerminationPointKey(terminationPointIdInTopology)).build();
 161         } else {
 162             LOG.debug(
 163                     "Value of termination point ID in topology is null. Instance identifier to topology can't be "
 164                             + "built");
 165             return null;
 166         }
 167     }
 168
 169     private static TpId provideTopologyTerminationPointId(
 170             final InstanceIdentifier<FlowCapableNodeConnector> iiToNodeInInventory) {
 171         NodeConnectorKey inventoryNodeConnectorKey = iiToNodeInInventory.firstKeyOf(NodeConnector.class);
 172         if (inventoryNodeConnectorKey != null) {
 173             return new TpId(inventoryNodeConnectorKey.getId().getValue());
 174         }
 175         return null;
 176     }
 177
 178 }