bgp/topology-provider/src/main/java/org/opendaylight/bgpcep/bgp/topology/provider/config/TopologyReferenceSingletonServiceImpl.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 org.opendaylight.bgpcep.bgp.topology.provider.config;
  10
  11 import static java.util.Objects.requireNonNull;
  12
  13 import com.google.common.base.Preconditions;
  14 import com.google.common.util.concurrent.ListenableFuture;
  15 import java.util.function.Function;
  16 import org.opendaylight.bgpcep.bgp.topology.provider.AbstractTopologyBuilder;
  17 import org.opendaylight.bgpcep.bgp.topology.provider.spi.BgpTopologyDeployer;
  18 import org.opendaylight.bgpcep.bgp.topology.provider.spi.TopologyReferenceSingletonService;
  19 import org.opendaylight.mdsal.singleton.common.api.ServiceGroupIdentifier;
  20 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.Topology;
  21 import org.opendaylight.yangtools.concepts.AbstractRegistration;
  22 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  23 import org.slf4j.Logger;
  24 import org.slf4j.LoggerFactory;
  25
  26 final class TopologyReferenceSingletonServiceImpl implements TopologyReferenceSingletonService {
  27     private static final Logger LOG = LoggerFactory.getLogger(TopologyReferenceSingletonServiceImpl.class);
  28     private final AbstractTopologyBuilder<?> topologyBuilder;
  29     private final AbstractRegistration serviceRegistration;
  30     private final Topology configuration;
  31     private final Function<Topology, Void> writeFunction;
  32
  33     TopologyReferenceSingletonServiceImpl(final AbstractTopologyBuilder<?> topologyBuilder, final BgpTopologyDeployer deployer,
  34             final Topology configuration, final Function<Topology, Void> writeFunction) {
  35         this.writeFunction = writeFunction;
  36         this.configuration = requireNonNull(configuration);
  37         this.topologyBuilder = requireNonNull(topologyBuilder);
  38         this.serviceRegistration = deployer.registerService(this);
  39     }
  40
  41     @Override
  42     public InstanceIdentifier<Topology> getInstanceIdentifier() {
  43         return this.topologyBuilder.getInstanceIdentifier();
  44     }
  45
  46     @Override
  47     public void close() {
  48         this.serviceRegistration.close();
  49     }
  50
  51     @Override
  52     public void instantiateServiceInstance() {
  53         LOG.info("Topology Singleton Service {} instantiated", getIdentifier());
  54         this.topologyBuilder.start();
  55         if (this.writeFunction != null) {
  56             this.writeFunction.apply(this.configuration);
  57         }
  58     }
  59
  60     @Override
  61     public ListenableFuture<Void> closeServiceInstance() {
  62         LOG.info("Close Topology Singleton Service {}", getIdentifier());
  63         return this.topologyBuilder.close();
  64     }
  65
  66     @Override
  67     public ServiceGroupIdentifier getIdentifier() {
  68         return ServiceGroupIdentifier.create(getInstanceIdentifier().firstKeyOf(Topology.class).getTopologyId().getValue());
  69     }
  70
  71     @Override
  72     public Topology getConfiguration() {
  73         return this.configuration;
  74     }
  75
  76 }