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>,
  29         AutoCloseable {
  30
  31     private static final Logger LOG = LoggerFactory.getLogger(DataTreeChangeListenerImpl.class);
  32     private static final long STARTUP_LOOP_TICK = 500L;
  33     private static final int STARTUP_LOOP_MAX_RETRIES = 8;
  34     protected final ListenerRegistration<DataTreeChangeListener> listenerRegistration;
  35     protected OperationProcessor operationProcessor;
  36
  37     static final InstanceIdentifier<Topology> II_TO_TOPOLOGY = InstanceIdentifier.create(NetworkTopology.class)
  38             .child(Topology.class, new TopologyKey(new TopologyId(FlowCapableTopologyProvider.TOPOLOGY_ID)));
  39
  40     @SuppressWarnings("checkstyle:IllegalCatch")
  41     public DataTreeChangeListenerImpl(final OperationProcessor operationProcessor, final DataBroker dataBroker,
  42                                final InstanceIdentifier<T> ii) {
  43         final DataTreeIdentifier<T> identifier = new DataTreeIdentifier(LogicalDatastoreType.OPERATIONAL, ii);
  44         final SimpleTaskRetryLooper looper = new SimpleTaskRetryLooper(STARTUP_LOOP_TICK, STARTUP_LOOP_MAX_RETRIES);
  45         try {
  46             listenerRegistration = looper.loopUntilNoException(
  47                 () -> dataBroker.registerDataTreeChangeListener(identifier, DataTreeChangeListenerImpl.this));
  48         } catch (Exception e) {
  49             LOG.error("Data listener registration failed!");
  50             throw new IllegalStateException("TopologyManager startup fail! TM bundle needs restart.", e);
  51         }
  52         this.operationProcessor = operationProcessor;
  53     }
  54
  55     @Override
  56     public void close() throws Exception {
  57         listenerRegistration.close();
  58     }
  59
  60     <T extends DataObject> void sendToTransactionChain(final T node, final InstanceIdentifier<T> iiToTopologyNode) {
  61         operationProcessor.enqueueOperation(
  62             manager -> manager.mergeToTransaction(LogicalDatastoreType.OPERATIONAL, iiToTopologyNode, node, true));
  63     }
  64
  65     InstanceIdentifier<org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network
  66             .topology.topology.Node> provideIIToTopologyNode(
  67             final NodeId nodeIdInTopology) {
  68         org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology
  69                 .NodeKey
  70                 nodeKeyInTopology
  71                 = new org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network
  72                 .topology.topology.NodeKey(
  73                 nodeIdInTopology);
  74         return II_TO_TOPOLOGY.builder()
  75                 .child(org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network
  76                                .topology.topology.Node.class,
  77                        nodeKeyInTopology).build();
  78     }
  79
  80     NodeId provideTopologyNodeId(InstanceIdentifier<T> iiToNodeInInventory) {
  81         final NodeKey inventoryNodeKey = iiToNodeInInventory.firstKeyOf(Node.class);
  82         if (inventoryNodeKey != null) {
  83             return new NodeId(inventoryNodeKey.getId().getValue());
  84         }
  85         return null;
  86     }
  87 }