+public class DistributedDataStore implements DOMStore, SchemaContextListener, AutoCloseable {
+
+ private static final Logger
+ LOG = LoggerFactory.getLogger(DistributedDataStore.class);
+
+ private static final String EXECUTOR_MAX_POOL_SIZE_PROP =
+ "mdsal.dist-datastore-executor-pool.size";
+ private static final int DEFAULT_EXECUTOR_MAX_POOL_SIZE = 10;
+
+ private static final String EXECUTOR_MAX_QUEUE_SIZE_PROP =
+ "mdsal.dist-datastore-executor-queue.size";
+ private static final int DEFAULT_EXECUTOR_MAX_QUEUE_SIZE = 5000;
+
+ private final ActorContext actorContext;
+
+ private SchemaContext schemaContext;
+
+ /**
+ * Executor used to run FutureTask's
+ *
+ * This is typically used when we need to make a request to an actor and
+ * wait for it's response and the consumer needs to be provided a Future.
+ */
+ private final ListeningExecutorService executor =
+ MoreExecutors.listeningDecorator(
+ SpecialExecutors.newBlockingBoundedFastThreadPool(
+ PropertyUtils.getIntSystemProperty(
+ EXECUTOR_MAX_POOL_SIZE_PROP,
+ DEFAULT_EXECUTOR_MAX_POOL_SIZE),
+ PropertyUtils.getIntSystemProperty(
+ EXECUTOR_MAX_QUEUE_SIZE_PROP,
+ DEFAULT_EXECUTOR_MAX_QUEUE_SIZE), "DistDataStore"));
+
+ public DistributedDataStore(ActorSystem actorSystem, String type, ClusterWrapper cluster, Configuration configuration) {
+ Preconditions.checkNotNull(actorSystem, "actorSystem should not be null");
+ Preconditions.checkNotNull(type, "type should not be null");
+ Preconditions.checkNotNull(cluster, "cluster should not be null");
+ Preconditions.checkNotNull(configuration, "configuration should not be null");
+
+
+ String shardManagerId = ShardManagerIdentifier.builder().type(type).build().toString();
+
+ LOG.info("Creating ShardManager : {}", shardManagerId);
+
+ this.actorContext = new ActorContext(actorSystem, actorSystem
+ .actorOf(ShardManager.props(type, cluster, configuration),
+ shardManagerId ), cluster, configuration);
+ }
+
+ public DistributedDataStore(ActorContext actorContext) {
+ this.actorContext = Preconditions.checkNotNull(actorContext, "actorContext should not be null");
+ }
+
+
+ @Override
+ public <L extends AsyncDataChangeListener<YangInstanceIdentifier, NormalizedNode<?, ?>>> ListenerRegistration<L> registerChangeListener(
+ YangInstanceIdentifier path, L listener,
+ AsyncDataBroker.DataChangeScope scope) {
+
+ Preconditions.checkNotNull(path, "path should not be null");
+ Preconditions.checkNotNull(listener, "listener should not be null");
+
+
+ LOG.debug("Registering listener: {} for path: {} scope: {}", listener, path, scope);
+
+ ActorRef dataChangeListenerActor = actorContext.getActorSystem().actorOf(
+ DataChangeListener.props(schemaContext,listener,path ));
+
+ String shardName = ShardStrategyFactory.getStrategy(path).findShard(path);
+
+ Object result = actorContext.executeLocalShardOperation(shardName,
+ new RegisterChangeListener(path, dataChangeListenerActor.path(),
+ scope),
+ ActorContext.ASK_DURATION
+ );
+
+ if (result != null) {
+ RegisterChangeListenerReply reply = (RegisterChangeListenerReply) result;
+ return new DataChangeListenerRegistrationProxy(actorContext
+ .actorSelection(reply.getListenerRegistrationPath()), listener,
+ dataChangeListenerActor);
+ }
+
+ LOG.debug(
+ "No local shard for shardName {} was found so returning a noop registration",
+ shardName);
+ return new NoOpDataChangeListenerRegistration(listener);
+ }
+
+
+
+
+
+ @Override
+ public DOMStoreTransactionChain createTransactionChain() {
+ return new TransactionChainProxy(actorContext, executor, schemaContext);
+ }
+
+ @Override
+ public DOMStoreReadTransaction newReadOnlyTransaction() {
+ return new TransactionProxy(actorContext, TransactionProxy.TransactionType.READ_ONLY,
+ executor, schemaContext);
+ }
+
+ @Override
+ public DOMStoreWriteTransaction newWriteOnlyTransaction() {
+ return new TransactionProxy(actorContext, TransactionProxy.TransactionType.WRITE_ONLY,
+ executor, schemaContext);
+ }
+
+ @Override
+ public DOMStoreReadWriteTransaction newReadWriteTransaction() {
+ return new TransactionProxy(actorContext, TransactionProxy.TransactionType.READ_WRITE,
+ executor, schemaContext);
+ }
+
+ @Override public void onGlobalContextUpdated(SchemaContext schemaContext) {
+ this.schemaContext = schemaContext;
+ actorContext.getShardManager().tell(
+ new UpdateSchemaContext(schemaContext), null);
+ }
+
+ @Override public void close() throws Exception {
+ actorContext.shutdown();
+
+ }