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.Nonnull;
  14 import javax.annotation.PreDestroy;
  15 import javax.inject.Inject;
  16 import javax.inject.Singleton;
  17 import org.apache.aries.blueprint.annotation.service.Reference;
  18 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  19 import org.opendaylight.controller.md.sal.binding.api.DataTreeModification;
  20 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.FlowCapableNodeConnector;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeConnectorRef;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.Nodes;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.node.NodeConnector;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.node.NodeConnectorKey;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.Node;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.model.topology.inventory.rev131030.InventoryNodeConnector;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.model.topology.inventory.rev131030.InventoryNodeConnectorBuilder;
  29 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NodeId;
  30 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.TpId;
  31 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.node.TerminationPoint;
  32 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.node.TerminationPointBuilder;
  33 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.node.TerminationPointKey;
  34 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  35 import org.slf4j.Logger;
  36 import org.slf4j.LoggerFactory;
  37
  38 @Singleton
  39 public class TerminationPointChangeListenerImpl extends DataTreeChangeListenerImpl<FlowCapableNodeConnector> {
  40     private static final Logger LOG = LoggerFactory.getLogger(TerminationPointChangeListenerImpl.class);
  41
  42     @Inject
  43     public TerminationPointChangeListenerImpl(@Reference final DataBroker dataBroker,
  44                                               final OperationProcessor operationProcessor) {
  45         super(operationProcessor, dataBroker,
  46               InstanceIdentifier.builder(Nodes.class).child(Node.class).child(NodeConnector.class)
  47                       .augmentation(FlowCapableNodeConnector.class).build());
  48         this.operationProcessor = operationProcessor;
  49     }
  50
  51     @Override
  52     public void onDataTreeChanged(@Nonnull Collection<DataTreeModification<FlowCapableNodeConnector>> modifications) {
  53         for (DataTreeModification<FlowCapableNodeConnector> modification : modifications) {
  54             switch (modification.getRootNode().getModificationType()) {
  55                 case WRITE:
  56                     processAddedTerminationPoints(modification);
  57                     break;
  58                 case SUBTREE_MODIFIED:
  59                     processUpdatedTerminationPoints(modification);
  60                     break;
  61                 case DELETE:
  62                     processRemovedTerminationPoints(modification);
  63                     break;
  64                 default:
  65                     throw new IllegalArgumentException(
  66                             "Unhandled modification type: {}" + modification.getRootNode().getModificationType());
  67             }
  68         }
  69     }
  70
  71     @Override
  72     @PreDestroy
  73     public void close() throws Exception {
  74         super.close();
  75     }
  76
  77     private void processRemovedTerminationPoints(final DataTreeModification<FlowCapableNodeConnector> modification) {
  78         final InstanceIdentifier<FlowCapableNodeConnector> removedNode = modification.getRootPath().getRootIdentifier();
  79         final TpId terminationPointId = provideTopologyTerminationPointId(removedNode);
  80         final InstanceIdentifier<TerminationPoint> iiToTopologyTerminationPoint = provideIIToTopologyTerminationPoint(
  81                 terminationPointId, removedNode);
  82
  83         if (iiToTopologyTerminationPoint != null) {
  84             final InstanceIdentifier<org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology
  85                     .rev131021.network.topology.topology.Node>
  86                     node = iiToTopologyTerminationPoint.firstIdentifierOf(
  87                     org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network
  88                             .topology.topology.Node.class);
  89             operationProcessor.enqueueOperation(manager -> {
  90                 Optional<org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network
  91                         .topology.topology.Node>
  92                         nodeOptional = Optional.empty();
  93                 try {
  94                     nodeOptional = Optional.ofNullable(
  95                             manager.readFromTransaction(LogicalDatastoreType.OPERATIONAL, node).get().orNull());
  96                 } catch (InterruptedException | ExecutionException e) {
  97                     LOG.warn("Error occurred when trying to read NodeConnector: {}", e.getMessage());
  98                     LOG.debug("Error occurred when trying to read NodeConnector.. ", e);
  99                 }
 100                 if (nodeOptional.isPresent()) {
 101                     TopologyManagerUtil.removeAffectedLinks(terminationPointId, manager, II_TO_TOPOLOGY);
 102                     manager.addDeleteOperationToTxChain(LogicalDatastoreType.OPERATIONAL,
 103                                                          iiToTopologyTerminationPoint);
 104                 }
 105             });
 106         } else {
 107             LOG.debug(
 108                     "Instance identifier to inventory wasn't translated to topology while deleting termination point.");
 109         }
 110     }
 111
 112     private void processUpdatedTerminationPoints(final DataTreeModification<FlowCapableNodeConnector> modification) {
 113         // TODO Auto-generated method stub
 114     }
 115
 116     private void processAddedTerminationPoints(final DataTreeModification<FlowCapableNodeConnector> modification) {
 117         final InstanceIdentifier<FlowCapableNodeConnector> iiToNodeInInventory = modification.getRootPath()
 118                 .getRootIdentifier();
 119         TpId terminationPointIdInTopology = provideTopologyTerminationPointId(iiToNodeInInventory);
 120         if (terminationPointIdInTopology != null) {
 121             InstanceIdentifier<TerminationPoint> iiToTopologyTerminationPoint = provideIIToTopologyTerminationPoint(
 122                     terminationPointIdInTopology, iiToNodeInInventory);
 123             TerminationPoint point = prepareTopologyTerminationPoint(terminationPointIdInTopology, iiToNodeInInventory);
 124             sendToTransactionChain(point, iiToTopologyTerminationPoint);
 125             removeLinks(modification.getRootNode().getDataAfter(), point);
 126         } else {
 127             LOG.debug("Inventory node connector key is null. Data can't be written to topology termination point");
 128         }
 129     }
 130
 131     private void removeLinks(final FlowCapableNodeConnector flowCapNodeConnector, final TerminationPoint point) {
 132         operationProcessor.enqueueOperation(manager -> {
 133             if ((flowCapNodeConnector.getState() != null && flowCapNodeConnector.getState().isLinkDown()) || (
 134                     flowCapNodeConnector.getConfiguration() != null && flowCapNodeConnector.getConfiguration()
 135                             .isPORTDOWN())) {
 136                 TopologyManagerUtil.removeAffectedLinks(point.getTpId(), manager, II_TO_TOPOLOGY);
 137             }
 138         });
 139     }
 140
 141     private static TerminationPoint prepareTopologyTerminationPoint(final TpId terminationPointIdInTopology,
 142                                                                     final
 143                                                                     InstanceIdentifier<FlowCapableNodeConnector>
 144                                                                             iiToNodeInInventory) {
 145         final InventoryNodeConnector inventoryNodeConnector = new InventoryNodeConnectorBuilder()
 146                 .setInventoryNodeConnectorRef(
 147                         new NodeConnectorRef(iiToNodeInInventory.firstIdentifierOf(NodeConnector.class))).build();
 148         final TerminationPointBuilder terminationPointBuilder = new TerminationPointBuilder();
 149         terminationPointBuilder.setTpId(terminationPointIdInTopology);
 150         terminationPointBuilder.addAugmentation(InventoryNodeConnector.class, inventoryNodeConnector);
 151         return terminationPointBuilder.build();
 152     }
 153
 154     private InstanceIdentifier<TerminationPoint> provideIIToTopologyTerminationPoint(
 155             final TpId terminationPointIdInTopology,
 156             final InstanceIdentifier<FlowCapableNodeConnector> iiToNodeInInventory) {
 157         NodeId nodeIdInTopology = provideTopologyNodeId(iiToNodeInInventory);
 158         if (terminationPointIdInTopology != null && nodeIdInTopology != null) {
 159             InstanceIdentifier<org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology
 160                     .rev131021.network.topology.topology.Node>
 161                     iiToTopologyNode = provideIIToTopologyNode(nodeIdInTopology);
 162             return iiToTopologyNode.builder()
 163                     .child(TerminationPoint.class, new TerminationPointKey(terminationPointIdInTopology)).build();
 164         } else {
 165             LOG.debug(
 166                     "Value of termination point ID in topology is null. Instance identifier to topology can't be "
 167                             + "built");
 168             return null;
 169         }
 170     }
 171
 172     private static TpId provideTopologyTerminationPointId(
 173             final InstanceIdentifier<FlowCapableNodeConnector> iiToNodeInInventory) {
 174         NodeConnectorKey inventoryNodeConnectorKey = iiToNodeInInventory.firstKeyOf(NodeConnector.class);
 175         if (inventoryNodeConnectorKey != null) {
 176             return new TpId(inventoryNodeConnectorKey.getId().getValue());
 177         }
 178         return null;
 179     }
 180
 181 }