/*
+ * Copyright (c) 2014 Cisco Systems, Inc. and others. All rights reserved.
*
- * Copyright (c) 2014 Cisco Systems, Inc. and others. All rights reserved.
- *
- * This program and the accompanying materials are made available under the
- * terms of the Eclipse Public License v1.0 which accompanies this distribution,
- * and is available at http://www.eclipse.org/legal/epl-v10.html
- *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v1.0 which accompanies this distribution,
+ * and is available at http://www.eclipse.org/legal/epl-v10.html
*/
package org.opendaylight.controller.cluster.datastore;
import akka.actor.ActorRef;
-import akka.actor.PoisonPill;
-import com.google.common.base.Optional;
-import com.google.common.util.concurrent.FutureCallback;
-import com.google.common.util.concurrent.Futures;
-import com.google.common.util.concurrent.ListenableFuture;
+import com.google.common.base.Preconditions;
import org.opendaylight.controller.cluster.datastore.jmx.mbeans.shard.ShardStats;
-import org.opendaylight.controller.cluster.datastore.messages.CreateSnapshot;
import org.opendaylight.controller.cluster.datastore.messages.DataExists;
import org.opendaylight.controller.cluster.datastore.messages.ReadData;
-import org.opendaylight.controller.cluster.datastore.utils.SerializationUtils;
-import org.opendaylight.controller.cluster.raft.base.messages.CaptureSnapshotReply;
-import org.opendaylight.controller.sal.core.spi.data.DOMStoreReadTransaction;
-import org.opendaylight.controller.sal.core.spi.data.DOMStoreTransaction;
-import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
-import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
-import org.opendaylight.yangtools.yang.model.api.SchemaContext;
/**
+ * Actor for a shard read transaction.
+ *
* @author: syedbahm
- * Date: 8/6/14
*/
public class ShardReadTransaction extends ShardTransaction {
- private static final YangInstanceIdentifier DATASTORE_ROOT = YangInstanceIdentifier.builder().build();
-
- private final DOMStoreReadTransaction transaction;
+ private final AbstractShardDataTreeTransaction<?> transaction;
- public ShardReadTransaction(DOMStoreReadTransaction transaction, ActorRef shardActor,
- SchemaContext schemaContext, ShardStats shardStats, String transactionID,
- short clientTxVersion) {
- super(shardActor, schemaContext, shardStats, transactionID, clientTxVersion);
- this.transaction = transaction;
+ public ShardReadTransaction(AbstractShardDataTreeTransaction<?> transaction, ActorRef shardActor,
+ ShardStats shardStats) {
+ super(shardActor, shardStats, transaction.getIdentifier());
+ this.transaction = Preconditions.checkNotNull(transaction);
}
@Override
- public void handleReceive(Object message) throws Exception {
- if(message instanceof ReadData) {
- readData(transaction, (ReadData) message, !SERIALIZED_REPLY);
-
- } else if (message instanceof DataExists) {
- dataExists(transaction, (DataExists) message, !SERIALIZED_REPLY);
- } else if (message instanceof CreateSnapshot) {
- createSnapshot();
- } else if(ReadData.SERIALIZABLE_CLASS.equals(message.getClass())) {
- readData(transaction, ReadData.fromSerializable(message), SERIALIZED_REPLY);
-
- } else if(DataExists.SERIALIZABLE_CLASS.equals(message.getClass())) {
- dataExists(transaction, DataExists.fromSerializable(message), SERIALIZED_REPLY);
-
+ public void handleReceive(Object message) {
+ if (ReadData.isSerializedType(message)) {
+ readData(transaction, ReadData.fromSerializable(message));
+ } else if (DataExists.isSerializedType(message)) {
+ dataExists(transaction, DataExists.fromSerializable(message));
} else {
super.handleReceive(message);
}
}
- private void createSnapshot() {
-
- // This is a special message sent by the shard to send back a serialized snapshot of the whole
- // data store tree. This transaction was created for that purpose only so we can
- // self-destruct after sending the reply.
-
- final ActorRef sender = getSender();
- final ActorRef self = getSelf();
- final ListenableFuture<Optional<NormalizedNode<?, ?>>> future = transaction.read(DATASTORE_ROOT);
-
- Futures.addCallback(future, new FutureCallback<Optional<NormalizedNode<?, ?>>>() {
- @Override
- public void onSuccess(Optional<NormalizedNode<?, ?>> result) {
- byte[] serialized = SerializationUtils.serializeNormalizedNode(result.get());
- sender.tell(new CaptureSnapshotReply(serialized), self);
-
- self.tell(PoisonPill.getInstance(), self);
- }
-
- @Override
- public void onFailure(Throwable t) {
- sender.tell(new akka.actor.Status.Failure(t), self);
-
- self.tell(PoisonPill.getInstance(), self);
- }
- });
- }
-
@Override
- protected DOMStoreTransaction getDOMStoreTransaction() {
+ protected AbstractShardDataTreeTransaction<?> getDOMStoreTransaction() {
return transaction;
}