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.controller.sal.binding.api.RpcProviderRegistry;
  18 import org.opendaylight.groupbasedpolicy.renderer.ios_xe_provider.impl.IosXeRendererProviderImpl;
  19 import org.opendaylight.groupbasedpolicy.sxp.ep.provider.spi.SxpEpProviderProvider;
  20 import org.opendaylight.mdsal.singleton.common.api.ClusterSingletonService;
  21 import org.opendaylight.mdsal.singleton.common.api.ClusterSingletonServiceProvider;
  22 import org.opendaylight.mdsal.singleton.common.api.ClusterSingletonServiceRegistration;
  23 import org.opendaylight.mdsal.singleton.common.api.ServiceGroupIdentifier;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.controller.config.ip.sgt.distribution.rev160715.IpSgtDistributionService;
  25 import org.slf4j.Logger;
  26 import org.slf4j.LoggerFactory;
  27
  28 public class IosXeProviderInstance implements ClusterSingletonService, AutoCloseable {
  29
  30     private static final Logger LOG = LoggerFactory.getLogger(IosXeProviderInstance.class);
  31
  32     private static final ServiceGroupIdentifier IDENTIFIER =
  33             ServiceGroupIdentifier.create(GroupbasedpolicyInstance.GBP_SERVICE_GROUP_IDENTIFIER);
  34     private final DataBroker dataBroker;
  35     private final BindingAwareBroker bindingAwareBroker;
  36     private final ClusterSingletonServiceProvider clusterSingletonService;
  37     private final SxpEpProviderProvider sxpEpProvider;
  38     private final IpSgtDistributionService ipSgtDistributor;
  39     private ClusterSingletonServiceRegistration singletonServiceRegistration;
  40     private IosXeRendererProviderImpl renderer;
  41
  42     public IosXeProviderInstance(final DataBroker dataBroker,
  43                                  final BindingAwareBroker broker,
  44                                  final ClusterSingletonServiceProvider clusterSingletonService,
  45                                  final SxpEpProviderProvider sxpEpProvider,
  46                                  final RpcProviderRegistry rpcProviderRegistry) {
  47         this.dataBroker = Preconditions.checkNotNull(dataBroker);
  48         this.bindingAwareBroker = Preconditions.checkNotNull(broker);
  49         this.clusterSingletonService = Preconditions.checkNotNull(clusterSingletonService);
  50         this.sxpEpProvider = Preconditions.checkNotNull(sxpEpProvider);
  51         this.ipSgtDistributor = Preconditions.checkNotNull(rpcProviderRegistry.getRpcService(IpSgtDistributionService.class));
  52     }
  53
  54     public void initialize() {
  55         LOG.info("Clustering session initiated for {}", this.getClass().getSimpleName());
  56         try {
  57         singletonServiceRegistration = clusterSingletonService.registerClusterSingletonService(this);
  58         } catch (Exception e) {
  59             LOG.warn("Exception thrown while registering cluster singleton service in {}", this.getClass(), e.getMessage());
  60         }
  61     }
  62
  63     @Override
  64     public void instantiateServiceInstance() {
  65         LOG.info("Instantiating {}", this.getClass().getSimpleName());
  66         renderer = new IosXeRendererProviderImpl(dataBroker, bindingAwareBroker, sxpEpProvider, ipSgtDistributor);
  67     }
  68
  69     @Override
  70     public ListenableFuture<Void> closeServiceInstance() {
  71         LOG.info("Instance {} closed", this.getClass().getSimpleName());
  72         renderer.close();
  73         return Futures.immediateFuture(null);
  74     }
  75
  76     @Override
  77     public void close() throws Exception {
  78         LOG.info("Clustering provider closed for {}", this.getClass().getSimpleName());
  79         if (singletonServiceRegistration != null) {
  80             try {
  81                 singletonServiceRegistration.close();
  82             } catch (Exception e) {
  83                 LOG.warn("{} closed unexpectedly. Cause: {}", e.getMessage());
  84             }
  85             singletonServiceRegistration = null;
  86         }
  87     }
  88
  89     @Override
  90     public ServiceGroupIdentifier getIdentifier() {
  91         return IDENTIFIER;
  92     }
  93 }