+
+ dataStore.setCloseable(updater);
+ dataStore.waitTillReady();
+
+ return dataStore;
+ }
+
+ public static AbstractDataStore createInstance(final ActorSystemProvider actorSystemProvider,
+ final DatastoreContext initialDatastoreContext, final DatastoreContextIntrospector introspector,
+ final DatastoreSnapshotRestore datastoreSnapshotRestore, final Configuration orgConfig) {
+
+ final String datastoreName = initialDatastoreContext.getDataStoreName();
+ LOG.info("Create data store instance of type : {}", datastoreName);
+
+ final ActorSystem actorSystem = actorSystemProvider.getActorSystem();
+ final DatastoreSnapshot restoreFromSnapshot = datastoreSnapshotRestore.getAndRemove(datastoreName).orElse(null);
+
+ final Configuration config;
+ if (orgConfig == null) {
+ config = new ConfigurationImpl(DEFAULT_MODULE_SHARDS_PATH, DEFAULT_MODULES_PATH);
+ } else {
+ config = orgConfig;
+ }
+ final ClusterWrapper clusterWrapper = new ClusterWrapperImpl(actorSystem);
+ final DatastoreContextFactory contextFactory = introspector.newContextFactory();
+
+ // This is the potentially-updated datastore context, distinct from the initial one
+ final DatastoreContext datastoreContext = contextFactory.getBaseDatastoreContext();
+
+ final AbstractDataStore dataStore;
+ if (datastoreContext.isUseTellBasedProtocol()) {
+ dataStore = new ClientBackedDataStore(actorSystem, clusterWrapper, config, contextFactory,
+ restoreFromSnapshot);
+ LOG.info("Data store {} is using tell-based protocol", datastoreName);
+ } else {
+ dataStore = new DistributedDataStore(actorSystem, clusterWrapper, config, contextFactory,
+ restoreFromSnapshot);
+ LOG.info("Data store {} is using ask-based protocol", datastoreName);
+ }
+