southbound/southbound-impl/src/main/java/org/opendaylight/ovsdb/southbound/OvsdbManagedNodeDataChangeListener.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.ovsdb.southbound;
   9
  10 import java.util.Map.Entry;
  11
  12 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  13 import org.opendaylight.controller.md.sal.binding.api.DataChangeListener;
  14 import org.opendaylight.controller.md.sal.common.api.data.AsyncDataBroker.DataChangeScope;
  15 import org.opendaylight.controller.md.sal.common.api.data.AsyncDataChangeEvent;
  16 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  17 import org.opendaylight.ovsdb.lib.OvsdbClient;
  18 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.OvsdbManagedNodeAugmentation;
  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.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.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node;
  23 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  24 import org.opendaylight.yangtools.yang.binding.DataObject;
  25 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  26 import org.slf4j.Logger;
  27 import org.slf4j.LoggerFactory;
  28
  29 public class OvsdbManagedNodeDataChangeListener implements DataChangeListener, AutoCloseable {
  30
  31     private ListenerRegistration<DataChangeListener> registration;
  32     private DataBroker db;
  33     private OvsdbConnectionManager cm;
  34     private static final Logger LOG = LoggerFactory.getLogger(OvsdbManagedNodeDataChangeListener.class);
  35
  36     OvsdbManagedNodeDataChangeListener(DataBroker db, OvsdbConnectionManager cm) {
  37         LOG.info("Registering OvsdbManagedNodeDataChangeListener");
  38         this.cm = cm;
  39         this.db = db;
  40         InstanceIdentifier<OvsdbManagedNodeAugmentation> path = InstanceIdentifier
  41                 .create(NetworkTopology.class)
  42                 .child(Topology.class, new TopologyKey(SouthboundConstants.OVSDB_TOPOLOGY_ID))
  43                 .child(Node.class)
  44                 .augmentation(OvsdbManagedNodeAugmentation.class);
  45         registration = db.registerDataChangeListener(LogicalDatastoreType.CONFIGURATION, path, this, DataChangeScope.ONE);
  46
  47     }
  48
  49     @Override
  50     public void onDataChanged(
  51             AsyncDataChangeEvent<InstanceIdentifier<?>, DataObject> changes) {
  52        LOG.info("Received change to ovsdbManagedNode: {}", changes);
  53        for( Entry<InstanceIdentifier<?>, DataObject> created : changes.getCreatedData().entrySet()) {
  54            // TODO validate we have the correct kind of InstanceIdentifier
  55            if(created.getValue() instanceof OvsdbManagedNodeAugmentation) {
  56                LOG.debug("Received request to create {}",created.getValue());
  57                OvsdbClient client = cm.getClient((OvsdbManagedNodeAugmentation)created.getValue());
  58                if(client != null) {
  59                    LOG.debug("Found client for {}", created.getValue());
  60                } else {
  61                    LOG.debug("Did not find client for {}",created.getValue());
  62                }
  63                // TODO - translate the OvsdbManagedNodeAugmentation to libary/ transacts to create the node
  64            }
  65        }
  66        // TODO handle case of updates to ovsdb managed nodes as needed
  67        // TODO handle case of delete to ovsdb managed nodes as needed
  68     }
  69
  70     @Override
  71     public void close() throws Exception {
  72         registration.close();
  73     }
  74
  75 }