package org.opendaylight.controller.cluster.datastore;
import akka.actor.ActorRef;
-import akka.actor.PoisonPill;
-import com.google.common.base.Optional;
+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.yangtools.yang.data.api.YangInstanceIdentifier;
-import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
/**
+ * 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 AbstractShardDataTreeTransaction<?> transaction;
public ShardReadTransaction(AbstractShardDataTreeTransaction<?> transaction, ActorRef shardActor,
- ShardStats shardStats, String transactionID, short clientTxVersion) {
- super(shardActor, shardStats, transactionID, clientTxVersion);
- this.transaction = transaction;
+ ShardStats shardStats) {
+ super(shardActor, shardStats, transaction.getIdentifier());
+ this.transaction = Preconditions.checkNotNull(transaction);
}
@Override
- public void handleReceive(Object message) throws Exception {
- if (message instanceof CreateSnapshot) {
- createSnapshot();
- } else if(ReadData.isSerializedType(message)) {
+ public void handleReceive(Object message) {
+ if (ReadData.isSerializedType(message)) {
readData(transaction, ReadData.fromSerializable(message));
- } else if(DataExists.isSerializedType(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 Optional<NormalizedNode<?, ?>> result = transaction.getSnapshot().readNode(DATASTORE_ROOT);
-
- byte[] serialized = SerializationUtils.serializeNormalizedNode(result.get());
- sender.tell(new CaptureSnapshotReply(serialized), self);
-
- self.tell(PoisonPill.getInstance(), self);
- }
-
@Override
protected AbstractShardDataTreeTransaction<?> getDOMStoreTransaction() {
return transaction;