renderers/ios-xe/src/main/java/org/opendaylight/groupbasedpolicy/renderer/ios_xe_provider/impl/config/IosXeProviderInstance.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.groupbasedpolicy.renderer.ios_xe_provider.impl.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 org.opendaylight.controller.config.yang.config.groupbasedpolicy.GroupbasedpolicyInstance;
  15 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  16 import org.opendaylight.controller.sal.binding.api.BindingAwareBroker;
  17 import org.opendaylight.groupbasedpolicy.renderer.ios_xe_provider.impl.IosXeRendererProviderImpl;
  18 import org.opendaylight.groupbasedpolicy.sxp.ep.provider.spi.SxpEpProviderProvider;
  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 IosXeProviderInstance implements ClusterSingletonService, AutoCloseable {
  27
  28     private static final Logger LOG = LoggerFactory.getLogger(IosXeProviderInstance.class);
  29
  30     private static final ServiceGroupIdentifier IDENTIFIER =
  31             ServiceGroupIdentifier.create(GroupbasedpolicyInstance.GBP_SERVICE_GROUP_IDENTIFIER);
  32     private final DataBroker dataBroker;
  33     private final BindingAwareBroker bindingAwareBroker;
  34     private final ClusterSingletonServiceProvider clusterSingletonService;
  35     private final SxpEpProviderProvider sxpEpProvider;
  36     private ClusterSingletonServiceRegistration singletonServiceRegistration;
  37     private IosXeRendererProviderImpl renderer;
  38
  39     public IosXeProviderInstance(final DataBroker dataBroker,
  40                                  final BindingAwareBroker broker,
  41                                  final ClusterSingletonServiceProvider clusterSingletonService,
  42                                  final SxpEpProviderProvider sxpEpProvider) {
  43         this.dataBroker = Preconditions.checkNotNull(dataBroker);
  44         this.bindingAwareBroker = Preconditions.checkNotNull(broker);
  45         this.clusterSingletonService = Preconditions.checkNotNull(clusterSingletonService);
  46         this.sxpEpProvider = Preconditions.checkNotNull(sxpEpProvider);
  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         renderer = new IosXeRendererProviderImpl(dataBroker, bindingAwareBroker, sxpEpProvider);
  58     }
  59
  60     @Override
  61     public ListenableFuture<Void> closeServiceInstance() {
  62         LOG.info("Instance {} closed", this.getClass().getSimpleName());
  63         renderer.close();
  64         return Futures.immediateFuture(null);
  65     }
  66
  67     @Override
  68     public void close() throws Exception {
  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. Cause: {}", e.getMessage());
  75             }
  76             singletonServiceRegistration = null;
  77         }
  78     }
  79
  80     @Override
  81     public ServiceGroupIdentifier getIdentifier() {
  82         return IDENTIFIER;
  83     }
  84 }