vbd/impl/src/main/java/io/fd/honeycomb/vbd/impl/VirtualBridgeDomainManager.java

   1 /*
   2  * Copyright (c) 2016 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
   9 package io.fd.honeycomb.vbd.impl;
  10
  11 import com.google.common.base.Preconditions;
  12 import javax.annotation.Nonnull;
  13 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  14 import org.opendaylight.controller.md.sal.binding.api.DataTreeIdentifier;
  15 import org.opendaylight.controller.md.sal.binding.api.MountPointService;
  16 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  17 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vbridge.topology.rev160129.TopologyTypesVbridgeAugment;
  18 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vbridge.topology.rev160129.network.topology.topology.topology.types.VbridgeTopology;
  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.topology.TopologyTypes;
  22 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  23 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  24 import org.slf4j.Logger;
  25 import org.slf4j.LoggerFactory;
  26
  27 /**
  28  * Tip for the Virtual Bridge Domain implementation. This class is instantiated when the application is started
  29  * and {@link #close()}d when it is shut down.
  30  */
  31 public final class VirtualBridgeDomainManager implements AutoCloseable {
  32     private static final Logger LOG = LoggerFactory.getLogger(VirtualBridgeDomainManager.class);
  33     private static final DataTreeIdentifier<VbridgeTopology> LISTEN_TREE =
  34             new DataTreeIdentifier<>(LogicalDatastoreType.CONFIGURATION,
  35                     InstanceIdentifier.builder(NetworkTopology.class).child(Topology.class).child(TopologyTypes.class)
  36                     .augmentation(TopologyTypesVbridgeAugment.class).child(VbridgeTopology.class).build());
  37
  38     private final ListenerRegistration<TopologyMonitor> reg;
  39     private boolean closed;
  40
  41     private VirtualBridgeDomainManager(final ListenerRegistration<TopologyMonitor> reg) {
  42         this.reg = Preconditions.checkNotNull(reg);
  43     }
  44
  45     public static VirtualBridgeDomainManager create(@Nonnull final DataBroker dataBroker,@Nonnull MountPointService mountService) {
  46         final ListenerRegistration<TopologyMonitor> reg =
  47                 dataBroker.registerDataTreeChangeListener(LISTEN_TREE, new TopologyMonitor(dataBroker, mountService));
  48
  49         return new VirtualBridgeDomainManager(reg);
  50     }
  51
  52     @Override
  53     public void close() {
  54         if (!closed) {
  55             LOG.debug("Virtual Bridge Domain manager shut down started");
  56
  57             final TopologyMonitor monitor = reg.getInstance();
  58             reg.close();
  59             LOG.debug("Topology monitor {} unregistered", monitor);
  60             monitor.close();
  61
  62             closed = true;
  63             LOG.debug("Virtual Bridge Domain manager shut down completed");
  64         }
  65     }
  66 }