sxp-integration/sxp-ep-provider/src/main/java/org/opendaylight/controller/config/yang/config/groupbasedpolicy/sxp_integration/sxp_ep_provider/SxpEpProviderProviderInstance.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_integration.sxp_ep_provider;
  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.ep.provider.api.EPPolicyTemplateProviderRegistry;
  18 import org.opendaylight.groupbasedpolicy.sxp.ep.provider.api.EPToSgtMapper;
  19 import org.opendaylight.groupbasedpolicy.sxp.ep.provider.impl.SxpEpProviderProviderImpl;
  20 import org.opendaylight.groupbasedpolicy.sxp.ep.provider.spi.SxpEpProviderProvider;
  21 import org.opendaylight.mdsal.singleton.common.api.ClusterSingletonService;
  22 import org.opendaylight.mdsal.singleton.common.api.ClusterSingletonServiceProvider;
  23 import org.opendaylight.mdsal.singleton.common.api.ClusterSingletonServiceRegistration;
  24 import org.opendaylight.mdsal.singleton.common.api.ServiceGroupIdentifier;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.base_endpoint.rev160427.BaseEndpointService;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.controller.config.groupbasedpolicy.sxp.integration.sxp.ep.provider.rev160722.SgtGeneratorConfig;
  27 import org.slf4j.Logger;
  28 import org.slf4j.LoggerFactory;
  29
  30 public class SxpEpProviderProviderInstance implements SxpEpProviderProvider, ClusterSingletonService, AutoCloseable {
  31
  32     private static final Logger LOG = LoggerFactory.getLogger(SxpEpProviderProviderInstance.class);
  33
  34     private static final ServiceGroupIdentifier IDENTIFIER =
  35             ServiceGroupIdentifier.create(GroupbasedpolicyInstance.GBP_SERVICE_GROUP_IDENTIFIER);
  36
  37     private final DataBroker dataBroker;
  38     private final BaseEndpointService endpointService;
  39     private final DomainSpecificRegistry registry;
  40     private final ClusterSingletonServiceProvider clusterSingletonService;
  41     private final SgtGeneratorConfig sgtGeneratorConfig;
  42     private ClusterSingletonServiceRegistration singletonServiceRegistration;
  43     private SxpEpProviderProviderImpl sxpEpProviderProvider;
  44
  45     public SxpEpProviderProviderInstance(DataBroker dataBroker, BaseEndpointService endpointService,
  46                                          DomainSpecificRegistry registry,
  47                                          ClusterSingletonServiceProvider clusterSingletonService,
  48                                          SgtGeneratorConfig sgtGeneratorConfig) {
  49         this.dataBroker = Preconditions.checkNotNull(dataBroker);
  50         this.endpointService = Preconditions.checkNotNull(endpointService);
  51         this.registry = Preconditions.checkNotNull(registry);
  52         this.clusterSingletonService = Preconditions.checkNotNull(clusterSingletonService);
  53         this.sgtGeneratorConfig = Preconditions.checkNotNull(sgtGeneratorConfig);
  54     }
  55
  56     public void initialize() {
  57         LOG.info("Clustering session initiated for {}", this.getClass().getSimpleName());
  58         singletonServiceRegistration = clusterSingletonService.registerClusterSingletonService(this);
  59     }
  60
  61     @Override
  62     public void instantiateServiceInstance() {
  63         LOG.info("Instantiating {}", this.getClass().getSimpleName());
  64         sxpEpProviderProvider = new SxpEpProviderProviderImpl(dataBroker, endpointService, registry, sgtGeneratorConfig);
  65     }
  66
  67     @Override
  68     public ListenableFuture<Void> closeServiceInstance() {
  69         LOG.info("Instance {} closed", this.getClass().getSimpleName());
  70         try {
  71             sxpEpProviderProvider.close();
  72         } catch (Exception e) {
  73             LOG.warn("Exception while closing ... {}", e.getMessage());
  74         }
  75         return Futures.immediateFuture(null);
  76     }
  77
  78     @Override
  79     public void close() throws Exception {
  80         LOG.info("Clustering provider closed for {}", this.getClass().getSimpleName());
  81         if (singletonServiceRegistration != null) {
  82             try {
  83                 singletonServiceRegistration.close();
  84             } catch (Exception e) {
  85                 LOG.warn("{} closed unexpectedly. Cause: {}", e.getMessage());
  86             }
  87             singletonServiceRegistration = null;
  88         }
  89     }
  90
  91     @Override
  92     public ServiceGroupIdentifier getIdentifier() {
  93         return IDENTIFIER;
  94     }
  95
  96     @Override
  97     public EPToSgtMapper getEPToSgtMapper() {
  98         return sxpEpProviderProvider.getEPToSgtMapper();
  99     }
 100
 101     @Override
 102     public EPPolicyTemplateProviderRegistry getEPPolicyTemplateProviderRegistry() {
 103         return sxpEpProviderProvider.getEPPolicyTemplateProviderRegistry();
 104     }
 105 }