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