domain-extensions/l2-l3/src/main/java/org/opendaylight/controller/config/yang/config/domain_extension/l2_l3/impl/L2L3DomainExtensionInstance.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.domain_extension.l2_l3.impl;
  10
  11 import javax.annotation.Nonnull;
  12
  13 import com.google.common.base.Preconditions;
  14 import com.google.common.util.concurrent.Futures;
  15 import com.google.common.util.concurrent.ListenableFuture;
  16 import org.opendaylight.controller.config.yang.config.groupbasedpolicy.GroupbasedpolicyInstance;
  17 import org.opendaylight.groupbasedpolicy.api.DomainSpecificRegistry;
  18 import org.opendaylight.groupbasedpolicy.domain_extension.l2_l3.L2L3NetworkDomainAugmentor;
  19 import org.opendaylight.mdsal.singleton.common.api.ClusterSingletonService;
  20 import org.opendaylight.mdsal.singleton.common.api.ClusterSingletonServiceProvider;
  21 import org.opendaylight.mdsal.singleton.common.api.ClusterSingletonServiceRegistration;
  22 import org.opendaylight.mdsal.singleton.common.api.ServiceGroupIdentifier;
  23 import org.slf4j.Logger;
  24 import org.slf4j.LoggerFactory;
  25
  26 public class L2L3DomainExtensionInstance implements ClusterSingletonService, AutoCloseable {
  27
  28     private static final Logger LOG = LoggerFactory.getLogger(L2L3DomainExtensionInstance.class);
  29
  30     private static final ServiceGroupIdentifier IDENTIFIER =
  31             ServiceGroupIdentifier.create(GroupbasedpolicyInstance.GBP_SERVICE_GROUP_IDENTIFIER);
  32     private final DomainSpecificRegistry domainSpecificRegistry;
  33     private ClusterSingletonServiceProvider clusterSingletonService;
  34     private ClusterSingletonServiceRegistration singletonServiceRegistration;
  35     private L2L3NetworkDomainAugmentor l2l3NetworkDomainAugmentor;
  36
  37     public L2L3DomainExtensionInstance(final DomainSpecificRegistry domainSpecificRegistry,
  38                                        final ClusterSingletonServiceProvider clusterSingletonService) {
  39         this.domainSpecificRegistry = Preconditions.checkNotNull(domainSpecificRegistry);
  40         this.clusterSingletonService = Preconditions.checkNotNull(clusterSingletonService);
  41     }
  42
  43     public void initialize() {
  44         LOG.info("Clustering session initiated for {}", this.getClass().getSimpleName());
  45         try {
  46             singletonServiceRegistration = clusterSingletonService.registerClusterSingletonService(this);
  47         }
  48         catch (Exception e) {
  49             LOG.warn("Exception while registering candidate ... ", e);
  50         }
  51     }
  52
  53     @Override
  54     public void instantiateServiceInstance() {
  55         LOG.info("Instantiating {}", this.getClass().getSimpleName());
  56         l2l3NetworkDomainAugmentor =
  57             new L2L3NetworkDomainAugmentor(domainSpecificRegistry.getNetworkDomainAugmentorRegistry());
  58     }
  59
  60     @Override
  61     public ListenableFuture<Void> closeServiceInstance() {
  62         LOG.info("Instance {} closed", this.getClass().getSimpleName());
  63         l2l3NetworkDomainAugmentor.close();
  64         return Futures.immediateFuture(null);
  65     }
  66
  67     @Override
  68     public void close() {
  69         LOG.info("Clustering provider closed for {}", this.getClass().getSimpleName());
  70         if (singletonServiceRegistration != null) {
  71             try {
  72                 singletonServiceRegistration.close();
  73             } catch (Exception e) {
  74                 LOG.warn("{} closed unexpectedly", this.getClass().getSimpleName(), e.getMessage());
  75             }
  76             singletonServiceRegistration = null;
  77         }
  78     }
  79
  80     @Override
  81     @Nonnull
  82     public ServiceGroupIdentifier getIdentifier() {
  83         return IDENTIFIER;
  84     }
  85 }