import akka.actor.ActorRef;
import akka.actor.PoisonPill;
-import akka.event.Logging;
-import akka.event.LoggingAdapter;
-import org.opendaylight.controller.cluster.datastore.messages.CloseTransaction;
-import org.opendaylight.controller.cluster.datastore.messages.CloseTransactionReply;
+import com.google.common.base.Optional;
+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.sal.core.spi.data.DOMStoreReadTransaction;
-import org.opendaylight.controller.sal.core.spi.data.DOMStoreTransactionChain;
-import org.opendaylight.yangtools.yang.model.api.SchemaContext;
+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;
/**
* @author: syedbahm
* Date: 8/6/14
*/
public class ShardReadTransaction extends ShardTransaction {
- private final DOMStoreReadTransaction transaction;
- private final LoggingAdapter log =
- Logging.getLogger(getContext().system(), this);
-
- public ShardReadTransaction(DOMStoreReadTransaction transaction, ActorRef shardActor, SchemaContext schemaContext) {
- super(shardActor, schemaContext);
- this.transaction = transaction;
-
- }
-
- public ShardReadTransaction(DOMStoreTransactionChain transactionChain, DOMStoreReadTransaction transaction, ActorRef shardActor, SchemaContext schemaContext) {
- super(transactionChain, shardActor, schemaContext);
- this.transaction = transaction;
- }
-
- @Override
- public void handleReceive(Object message) throws Exception {
- if (ReadData.SERIALIZABLE_CLASS.equals(message.getClass())) {
- readData(transaction,ReadData.fromSerializable(message));
- } else {
- super.handleReceive(message);
+ 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;
+ }
+
+ @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);
+
+ } 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;
}
- }
- protected void closeTransaction(CloseTransaction message) {
- transaction.close();
- getSender().tell(new CloseTransactionReply().toSerializable(), getSelf());
- getSelf().tell(PoisonPill.getInstance(), getSelf());
- }
+ @Override
+ protected boolean returnCloseTransactionReply() {
+ return false;
+ }
}