neutron-vpp-mapper/src/main/java/org/opendaylight/controller/config/yang/config/neutron_vpp_mapper/impl/NeutronVppMapperInstance.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.neutron_vpp_mapper.impl;
  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.neutron.vpp.mapper.NeutronVppMapper;
  17 import org.opendaylight.mdsal.singleton.common.api.ClusterSingletonService;
  18 import org.opendaylight.mdsal.singleton.common.api.ClusterSingletonServiceProvider;
  19 import org.opendaylight.mdsal.singleton.common.api.ClusterSingletonServiceRegistration;
  20 import org.opendaylight.mdsal.singleton.common.api.ServiceGroupIdentifier;
  21 import org.slf4j.Logger;
  22 import org.slf4j.LoggerFactory;
  23
  24 public class NeutronVppMapperInstance implements ClusterSingletonService, AutoCloseable {
  25
  26     private static final Logger LOG = LoggerFactory.getLogger(NeutronVppMapperInstance.class);
  27
  28     private static final ServiceGroupIdentifier IDENTIFIER =
  29             ServiceGroupIdentifier.create(GroupbasedpolicyInstance.GBP_SERVICE_GROUP_IDENTIFIER);
  30     private final DataBroker dataBroker;
  31     private final String socketPath;
  32     private final String socketPrefix;
  33     private final ClusterSingletonServiceProvider clusterSingletonService;
  34     private ClusterSingletonServiceRegistration singletonServiceRegistration;
  35     private NeutronVppMapper mapper;
  36
  37     public NeutronVppMapperInstance(final DataBroker dataBroker,
  38                                     final String socketPath,
  39                                     final String socketPrefix,
  40                                     final ClusterSingletonServiceProvider clusterSingletonService) {
  41         this.dataBroker = Preconditions.checkNotNull(dataBroker);
  42         this.socketPath = Preconditions.checkNotNull(socketPath);
  43         this.socketPrefix = Preconditions.checkNotNull(socketPrefix);
  44         this.clusterSingletonService = Preconditions.checkNotNull(clusterSingletonService);
  45     }
  46
  47     public void initialize() {
  48         LOG.info("Clustering session initiated for {}", this.getClass().getSimpleName());
  49         singletonServiceRegistration = clusterSingletonService.registerClusterSingletonService(this);
  50     }
  51
  52     @Override
  53     public void instantiateServiceInstance() {
  54         LOG.info("Instantiating {}", this.getClass().getSimpleName());
  55         mapper = new NeutronVppMapper(socketPath, socketPrefix, dataBroker);
  56     }
  57
  58     @Override
  59     public ListenableFuture<Void> closeServiceInstance() {
  60         LOG.info("Instance {} closed", this.getClass().getSimpleName());
  61         mapper.close();
  62         return Futures.immediateFuture(null);
  63     }
  64
  65     @Override
  66     public void close() throws Exception {
  67         LOG.info("Clustering provider closed for {}", this.getClass().getSimpleName());
  68         if (singletonServiceRegistration != null) {
  69             try {
  70                 singletonServiceRegistration.close();
  71             } catch (Exception e) {
  72                 LOG.warn("{} closed unexpectedly.", this.getClass().getSimpleName(), e.getMessage());
  73             }
  74             singletonServiceRegistration = null;
  75         }
  76     }
  77
  78     @Override
  79     public ServiceGroupIdentifier getIdentifier() {
  80         return IDENTIFIER;
  81     }
  82 }