sxp-mapper/src/main/java/org/opendaylight/controller/config/yang/config/groupbasedpolicy/sxp_mapper/SxpMapperProviderInstance.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.controller.config.yang.config.groupbasedpolicy.sxp_mapper;
  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 org.opendaylight.controller.config.yang.config.groupbasedpolicy.GroupbasedpolicyInstance;
  15 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  16 import org.opendaylight.groupbasedpolicy.api.DomainSpecificRegistry;
  17 import org.opendaylight.groupbasedpolicy.sxp.mapper.impl.SxpMapperProviderImpl;
  18 import org.opendaylight.mdsal.singleton.common.api.ClusterSingletonService;
  19 import org.opendaylight.mdsal.singleton.common.api.ClusterSingletonServiceProvider;
  20 import org.opendaylight.mdsal.singleton.common.api.ClusterSingletonServiceRegistration;
  21 import org.opendaylight.mdsal.singleton.common.api.ServiceGroupIdentifier;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.base_endpoint.rev160427.BaseEndpointService;
  23 import org.slf4j.Logger;
  24 import org.slf4j.LoggerFactory;
  25
  26 public class SxpMapperProviderInstance implements ClusterSingletonService, AutoCloseable {
  27
  28     private static final Logger LOG = LoggerFactory.getLogger(SxpMapperProviderInstance.class);
  29
  30     private static final ServiceGroupIdentifier IDENTIFIER =
  31             ServiceGroupIdentifier.create(GroupbasedpolicyInstance.GBP_SERVICE_GROUP_IDENTIFIER);
  32     private final DataBroker dataBroker;
  33     private final BaseEndpointService endpointService;
  34     private final DomainSpecificRegistry registry;
  35     private final ClusterSingletonServiceProvider clusterSingletonService;
  36     private ClusterSingletonServiceRegistration singletonServiceRegistration;
  37     private SxpMapperProviderImpl sxpMapperProviderImpl;
  38
  39     public SxpMapperProviderInstance(final DataBroker dataBroker,
  40                                      final BaseEndpointService endpointService,
  41                                      final DomainSpecificRegistry registry,
  42                                      final ClusterSingletonServiceProvider clusterSingletonService) {
  43         this.dataBroker = Preconditions.checkNotNull(dataBroker);
  44         this.endpointService = Preconditions.checkNotNull(endpointService);
  45         this.registry = Preconditions.checkNotNull(registry);
  46         this.clusterSingletonService = Preconditions.checkNotNull(clusterSingletonService);
  47     }
  48
  49     public void initialize() {
  50         LOG.info("Clustering session initiated for {}", this.getClass().getSimpleName());
  51         singletonServiceRegistration = clusterSingletonService.registerClusterSingletonService(this);
  52     }
  53
  54     @Override
  55     public void instantiateServiceInstance() {
  56         LOG.info("Instantiating {}", this.getClass().getSimpleName());
  57         sxpMapperProviderImpl = new SxpMapperProviderImpl(dataBroker, endpointService, registry);
  58     }
  59
  60     @Override
  61     public ListenableFuture<Void> closeServiceInstance() {
  62         LOG.info("Instance {} closed", this.getClass().getSimpleName());
  63         try {
  64             sxpMapperProviderImpl.close();
  65         } catch (Exception e) {
  66             LOG.warn("Exception while closing ... {}", e.getMessage());
  67         }
  68         return Futures.immediateFuture(null);
  69     }
  70
  71     @Override
  72     public void close() throws Exception {
  73         LOG.info("Clustering provider closed for {}", this.getClass().getSimpleName());
  74         if (singletonServiceRegistration != null) {
  75             try {
  76                 singletonServiceRegistration.close();
  77             } catch (Exception e) {
  78                 LOG.warn("{} closed unexpectedly. Cause: {}", e.getMessage());
  79             }
  80             singletonServiceRegistration = null;
  81         }
  82     }
  83
  84     @Override
  85     public ServiceGroupIdentifier getIdentifier() {
  86         return IDENTIFIER;
  87     }
  88 }