applications/topology-manager/src/main/java/org/opendaylight/openflowplugin/applications/topology/manager/DataTreeChangeListenerImpl.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 org.opendaylight.controller.md.sal.binding.api.DataBroker;
  11 import org.opendaylight.controller.md.sal.binding.api.DataTreeChangeListener;
  12 import org.opendaylight.controller.md.sal.binding.api.DataTreeIdentifier;
  13 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  14 import org.opendaylight.openflowplugin.common.wait.SimpleTaskRetryLooper;
  15 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.Node;
  16 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.NodeKey;
  17 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NetworkTopology;
  18 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NodeId;
  19 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.TopologyId;
  20 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.Topology;
  21 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.TopologyKey;
  22 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  23 import org.opendaylight.yangtools.yang.binding.DataObject;
  24 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  25 import org.slf4j.Logger;
  26 import org.slf4j.LoggerFactory;
  27
  28 public abstract class DataTreeChangeListenerImpl<T extends DataObject> implements DataTreeChangeListener<T>, AutoCloseable {
  29
  30     private static final Logger LOG = LoggerFactory.getLogger(DataTreeChangeListenerImpl.class);
  31     private static final long STARTUP_LOOP_TICK = 500L;
  32     private static final int STARTUP_LOOP_MAX_RETRIES = 8;
  33     protected final ListenerRegistration<DataTreeChangeListener> listenerRegistration;
  34     protected OperationProcessor operationProcessor;
  35
  36     /**
  37      * instance identifier to Node in network topology model (yangtools)
  38      */
  39     static final InstanceIdentifier<Topology> II_TO_TOPOLOGY =
  40             InstanceIdentifier
  41             .create(NetworkTopology.class)
  42             .child(Topology.class, new TopologyKey(new TopologyId(FlowCapableTopologyProvider.TOPOLOGY_ID)));
  43
  44     DataTreeChangeListenerImpl(final OperationProcessor operationProcessor,
  45                                final DataBroker dataBroker,
  46                                final InstanceIdentifier<T> ii) {
  47         final DataTreeIdentifier<T> identifier = new DataTreeIdentifier(LogicalDatastoreType.OPERATIONAL, ii);
  48         final SimpleTaskRetryLooper looper = new SimpleTaskRetryLooper(STARTUP_LOOP_TICK, STARTUP_LOOP_MAX_RETRIES);
  49         try {
  50             listenerRegistration = looper.loopUntilNoException(() ->
  51                     dataBroker.registerDataTreeChangeListener(identifier, DataTreeChangeListenerImpl.this));
  52         } catch (Exception e) {
  53             LOG.error("Data listener registration failed!");
  54             throw new IllegalStateException("TopologyManager startup fail! TM bundle needs restart.", e);
  55         }
  56         this.operationProcessor = operationProcessor;
  57     }
  58
  59     @Override
  60     public void close() throws Exception {
  61         listenerRegistration.close();
  62     }
  63
  64     <T extends DataObject> void sendToTransactionChain(final T node, final InstanceIdentifier<T> iiToTopologyNode) {
  65         operationProcessor.enqueueOperation(manager -> manager.mergeToTransaction(LogicalDatastoreType.OPERATIONAL, iiToTopologyNode, node, true));
  66     }
  67
  68     InstanceIdentifier<org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node> provideIIToTopologyNode(
  69             final NodeId nodeIdInTopology) {
  70         org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.NodeKey nodeKeyInTopology = new org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.NodeKey(
  71                 nodeIdInTopology);
  72         return II_TO_TOPOLOGY
  73                 .builder()
  74                 .child(org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node.class,
  75                         nodeKeyInTopology).build();
  76     }
  77
  78     NodeId provideTopologyNodeId(InstanceIdentifier<T> iiToNodeInInventory) {
  79         final NodeKey inventoryNodeKey = iiToNodeInInventory.firstKeyOf(Node.class);
  80         if (inventoryNodeKey != null) {
  81             return new NodeId(inventoryNodeKey.getId().getValue());
  82         }
  83         return null;
  84     }
  85
  86 }