groupbasedpolicy/src/main/java/org/opendaylight/controller/config/yang/config/groupbasedpolicy/GroupbasedpolicyInstance.java

   1 /*
   2  * Copyright (c) 2016 Cisco Systems, Inc. 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;
  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.md.sal.binding.api.DataBroker;
  15 import org.opendaylight.groupbasedpolicy.api.PolicyValidatorRegistry;
  16 import org.opendaylight.groupbasedpolicy.location.resolver.LocationResolver;
  17 import org.opendaylight.groupbasedpolicy.resolver.ForwardingResolver;
  18 import org.opendaylight.groupbasedpolicy.sf.SubjectFeatureDefinitionProvider;
  19 import org.opendaylight.groupbasedpolicy.sf.SupportedActionDefinitionListener;
  20 import org.opendaylight.groupbasedpolicy.sf.SupportedClassifierDefinitionListener;
  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.slf4j.Logger;
  26 import org.slf4j.LoggerFactory;
  27
  28 public class GroupbasedpolicyInstance implements ClusterSingletonService, AutoCloseable {
  29
  30     private static final Logger LOG = LoggerFactory.getLogger(GroupbasedpolicyInstance.class);
  31
  32     public static final String GBP_SERVICE_GROUP_IDENTIFIER = "gbp-service-group-identifier";
  33     private static final ServiceGroupIdentifier IDENTIFIER = ServiceGroupIdentifier.create(GBP_SERVICE_GROUP_IDENTIFIER);
  34     private final DataBroker dataBroker;
  35     private final PolicyValidatorRegistry policyValidatorRegistry;
  36     private ClusterSingletonServiceProvider clusterSingletonService;
  37     private ClusterSingletonServiceRegistration singletonServiceRegistration;
  38     private SubjectFeatureDefinitionProvider subjectFeatureDefinitionProvider;
  39     private SupportedClassifierDefinitionListener supportedClassifierDefinitionListener;
  40     private SupportedActionDefinitionListener supportedActionDefinitionListener;
  41     private LocationResolver locationResolver;
  42     private ForwardingResolver forwardingResolver;
  43
  44     public GroupbasedpolicyInstance(final DataBroker dataBroker,
  45                                     final PolicyValidatorRegistry validatorRegistry,
  46                                     final ClusterSingletonServiceProvider clusterSingletonService) {
  47         this.dataBroker = Preconditions.checkNotNull(dataBroker);
  48         this.policyValidatorRegistry = Preconditions.checkNotNull(validatorRegistry);
  49         this.clusterSingletonService = Preconditions.checkNotNull(clusterSingletonService);
  50     }
  51
  52     public void initialize() {
  53         LOG.info("Clustering session initiated for {}", this.getClass().getSimpleName());
  54         singletonServiceRegistration = clusterSingletonService.registerClusterSingletonService(this);
  55     }
  56
  57     @Override
  58     public void instantiateServiceInstance() {
  59         LOG.info("Instantiating {}", this.getClass().getSimpleName());
  60         subjectFeatureDefinitionProvider = new SubjectFeatureDefinitionProvider(dataBroker);
  61         supportedClassifierDefinitionListener = new SupportedClassifierDefinitionListener(dataBroker,
  62                 policyValidatorRegistry);
  63         supportedActionDefinitionListener = new SupportedActionDefinitionListener(dataBroker);
  64         locationResolver = new LocationResolver(dataBroker);
  65         forwardingResolver = new ForwardingResolver(dataBroker);
  66     }
  67
  68     @Override
  69     public ListenableFuture<Void> closeServiceInstance() {
  70         LOG.info("Instance {} closed", this.getClass().getSimpleName());
  71         subjectFeatureDefinitionProvider.close();
  72         supportedClassifierDefinitionListener.close();
  73         supportedActionDefinitionListener.close();
  74         locationResolver.close();
  75         forwardingResolver.close();
  76         return Futures.immediateFuture(null);
  77     }
  78
  79     @Override
  80     public ServiceGroupIdentifier getIdentifier() {
  81         return IDENTIFIER;
  82     }
  83
  84     @Override
  85     public void close() throws Exception {
  86         LOG.info("Clustering provider closed for {}", this.getClass().getSimpleName());
  87         if (singletonServiceRegistration != null) {
  88             try {
  89                 singletonServiceRegistration.close();
  90             } catch (Exception e) {
  91                 LOG.warn("{} closed unexpectedly", this.getClass().getSimpleName(), e);
  92             }
  93             singletonServiceRegistration = null;
  94         }
  95     }
  96 }