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