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