singleton-service/mdsal-singleton-dom-impl/src/main/java/org/opendaylight/mdsal/singleton/dom/impl/DOMClusterSingletonServiceProviderImpl.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 package org.opendaylight.mdsal.singleton.dom.impl;
   9
  10 import java.util.ServiceLoader;
  11 import org.kohsuke.MetaInfServices;
  12 import org.opendaylight.mdsal.eos.dom.api.DOMEntity;
  13 import org.opendaylight.mdsal.eos.dom.api.DOMEntityOwnershipChange;
  14 import org.opendaylight.mdsal.eos.dom.api.DOMEntityOwnershipListener;
  15 import org.opendaylight.mdsal.eos.dom.api.DOMEntityOwnershipListenerRegistration;
  16 import org.opendaylight.mdsal.eos.dom.api.DOMEntityOwnershipService;
  17 import org.opendaylight.mdsal.singleton.common.api.ClusterSingletonServiceProvider;
  18 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  19 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifierWithPredicates;
  20
  21 /**
  22  * Binding version of {@link AbstractClusterSingletonServiceProviderImpl}.
  23  */
  24 @MetaInfServices(value = ClusterSingletonServiceProvider.class)
  25 public class DOMClusterSingletonServiceProviderImpl extends
  26         AbstractClusterSingletonServiceProviderImpl<YangInstanceIdentifier, DOMEntity,
  27                                                     DOMEntityOwnershipChange,
  28                                                     DOMEntityOwnershipListener,
  29                                                     DOMEntityOwnershipService,
  30                                                     DOMEntityOwnershipListenerRegistration>
  31         implements DOMEntityOwnershipListener {
  32
  33     public DOMClusterSingletonServiceProviderImpl() {
  34         this(ServiceLoader.load(DOMEntityOwnershipService.class).findFirst().orElseThrow(
  35             () -> new IllegalStateException("Could not find DOMEntityOwnershipService")));
  36     }
  37
  38     protected DOMClusterSingletonServiceProviderImpl(final DOMEntityOwnershipService entityOwnershipService) {
  39         super(entityOwnershipService);
  40     }
  41
  42     @Override
  43     protected DOMEntity createEntity(final String type, final String ident) {
  44         return new DOMEntity(type, ident);
  45     }
  46
  47     @Override
  48     protected DOMEntityOwnershipListenerRegistration registerListener(final String type,
  49             final DOMEntityOwnershipService eos) {
  50         return eos.registerListener(type, this);
  51     }
  52
  53     @Override
  54     protected String getServiceIdentifierFromEntity(final DOMEntity entity) {
  55         final YangInstanceIdentifier yii = entity.getIdentifier();
  56         final NodeIdentifierWithPredicates niiwp = (NodeIdentifierWithPredicates) yii.getLastPathArgument();
  57         return niiwp.values().iterator().next().toString();
  58     }
  59 }