opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/DistributedDataStoreFactory.java

   1 /*
   2  * Copyright (c) 2014 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.controller.cluster.datastore;
   9
  10 import akka.actor.ActorSystem;
  11 import org.opendaylight.controller.cluster.ActorSystemProvider;
  12 import org.opendaylight.controller.cluster.databroker.ClientBackedDataStore;
  13 import org.opendaylight.controller.cluster.datastore.config.Configuration;
  14 import org.opendaylight.controller.cluster.datastore.config.ConfigurationImpl;
  15 import org.opendaylight.controller.cluster.datastore.persisted.DatastoreSnapshot;
  16 import org.opendaylight.controller.sal.core.api.model.SchemaService;
  17 import org.osgi.framework.BundleContext;
  18 import org.slf4j.Logger;
  19 import org.slf4j.LoggerFactory;
  20
  21 public class DistributedDataStoreFactory {
  22     private static final Logger LOG = LoggerFactory.getLogger(DistributedDataStoreFactory.class);
  23
  24     public static AbstractDataStore createInstance(final SchemaService schemaService,
  25             final DatastoreContext initialDatastoreContext, final DatastoreSnapshotRestore datastoreSnapshotRestore,
  26             final ActorSystemProvider actorSystemProvider, final BundleContext bundleContext) {
  27
  28         final String datastoreName = initialDatastoreContext.getDataStoreName();
  29         LOG.info("Create data store instance of type : {}", datastoreName);
  30
  31         final ActorSystem actorSystem = actorSystemProvider.getActorSystem();
  32         final DatastoreSnapshot restoreFromSnapshot = datastoreSnapshotRestore.getAndRemove(datastoreName);
  33         final DatastoreContextIntrospector introspector = new DatastoreContextIntrospector(initialDatastoreContext);
  34         final DatastoreContextConfigAdminOverlay overlay = new DatastoreContextConfigAdminOverlay(
  35                 introspector, bundleContext);
  36
  37         final Configuration config = new ConfigurationImpl("module-shards.conf", "modules.conf");
  38         final ClusterWrapper clusterWrapper = new ClusterWrapperImpl(actorSystem);
  39         final DatastoreContextFactory contextFactory = introspector.newContextFactory();
  40
  41         // This is the potentially-updated datastore context, distinct from the initial one
  42         final DatastoreContext datastoreContext = contextFactory.getBaseDatastoreContext();
  43
  44         final AbstractDataStore dataStore;
  45         if (datastoreContext.isUseTellBasedProtocol()) {
  46             dataStore = new ClientBackedDataStore(actorSystem, clusterWrapper, config, contextFactory,
  47                 restoreFromSnapshot);
  48             LOG.info("Data store {} is using tell-based protocol", datastoreName);
  49         } else {
  50             dataStore = new DistributedDataStore(actorSystem, clusterWrapper, config, contextFactory,
  51                 restoreFromSnapshot);
  52             LOG.info("Data store {} is using ask-based protocol", datastoreName);
  53         }
  54
  55         overlay.setListener(dataStore);
  56
  57         schemaService.registerSchemaContextListener(dataStore);
  58
  59         dataStore.setCloseable(overlay);
  60         dataStore.waitTillReady();
  61
  62         return dataStore;
  63     }
  64 }