applications/topology-manager/src/main/java/org/opendaylight/openflowplugin/applications/topology/manager/DataChangeListenerImpl.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.concurrent.Callable;
  11 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  12 import org.opendaylight.controller.md.sal.binding.api.DataChangeListener;
  13 import org.opendaylight.controller.md.sal.binding.api.ReadWriteTransaction;
  14 import org.opendaylight.controller.md.sal.common.api.data.AsyncDataBroker;
  15 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  16 import org.opendaylight.openflowplugin.common.wait.SimpleTaskRetryLooper;
  17 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.Node;
  18 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.NodeKey;
  19 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NetworkTopology;
  20 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NodeId;
  21 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.TopologyId;
  22 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.Topology;
  23 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.TopologyKey;
  24 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  25 import org.opendaylight.yangtools.yang.binding.DataObject;
  26 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  27 import org.slf4j.Logger;
  28 import org.slf4j.LoggerFactory;
  29
  30 public abstract class DataChangeListenerImpl implements DataChangeListener, AutoCloseable {
  31
  32     private final static Logger LOG = LoggerFactory.getLogger(DataChangeListenerImpl.class);
  33     private static final long STARTUP_LOOP_TICK = 500L;
  34     private static final int STARTUP_LOOP_MAX_RETRIES = 8;
  35     protected final ListenerRegistration<DataChangeListener> dataChangeListenerRegistration;
  36     protected OperationProcessor operationProcessor;
  37
  38     /**
  39      * instance identifier to Node in network topology model (yangtools)
  40      */
  41     protected static final InstanceIdentifier<Topology> II_TO_TOPOLOGY =
  42             InstanceIdentifier
  43             .builder(NetworkTopology.class)
  44             .child(Topology.class, new TopologyKey(new TopologyId(FlowCapableTopologyProvider.TOPOLOGY_ID)))
  45             .build();
  46
  47
  48     /**
  49      *
  50      */
  51     public DataChangeListenerImpl(final OperationProcessor operationProcessor, final DataBroker dataBroker,
  52             final InstanceIdentifier<?> ii) {
  53         SimpleTaskRetryLooper looper = new SimpleTaskRetryLooper(STARTUP_LOOP_TICK, STARTUP_LOOP_MAX_RETRIES);
  54         try {
  55             dataChangeListenerRegistration = looper.loopUntilNoException(new Callable<ListenerRegistration<DataChangeListener>>() {
  56                 @Override
  57                 public ListenerRegistration<DataChangeListener> call() throws Exception {
  58                     return dataBroker.registerDataChangeListener(LogicalDatastoreType.OPERATIONAL, ii,
  59                             DataChangeListenerImpl.this, AsyncDataBroker.DataChangeScope.BASE);
  60
  61                 }
  62             });
  63         } catch (Exception e) {
  64             LOG.warn("data listener registration failed: {}", e.getMessage());
  65             LOG.debug("data listener registration failed.. ", e);
  66             throw new IllegalStateException("TopologyManager startup fail! TM bundle needs restart.", e);
  67         }
  68
  69         this.operationProcessor = operationProcessor;
  70     }
  71
  72     @Override
  73     public void close() throws Exception {
  74         dataChangeListenerRegistration.close();
  75     }
  76
  77     protected <T extends DataObject> void sendToTransactionChain(final T node,
  78             final InstanceIdentifier<T> iiToTopologyNode) {
  79         operationProcessor.enqueueOperation(new TopologyOperation() {
  80
  81             @Override
  82             public void applyOperation(ReadWriteTransaction transaction) {
  83                 transaction.merge(LogicalDatastoreType.OPERATIONAL, iiToTopologyNode, node, true);
  84             }
  85         });
  86     }
  87
  88     protected InstanceIdentifier<org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node> provideIIToTopologyNode(
  89             final NodeId nodeIdInTopology) {
  90         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(
  91                 nodeIdInTopology);
  92         return II_TO_TOPOLOGY
  93                 .builder()
  94                 .child(org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node.class,
  95                         nodeKeyInTopology).build();
  96     }
  97
  98     protected NodeId provideTopologyNodeId(InstanceIdentifier<?> iiToNodeInInventory) {
  99         final NodeKey inventoryNodeKey = iiToNodeInInventory.firstKeyOf(Node.class, NodeKey.class);
 100         if (inventoryNodeKey != null) {
 101             return new NodeId(inventoryNodeKey.getId().getValue());
 102         }
 103         return null;
 104     }
 105
 106 }