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