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