/*
+ * 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 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.DOMStoreTransaction;
-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 static final YangInstanceIdentifier DATASTORE_ROOT = YangInstanceIdentifier.builder().build();
- public ShardReadTransaction(DOMStoreReadTransaction transaction, ActorRef shardActor,
- SchemaContext schemaContext, ShardStats shardStats, String transactionID,
- int txnClientVersion) {
- super(shardActor, schemaContext, shardStats, transactionID, txnClientVersion);
+ private final AbstractShardDataTreeTransaction<?> transaction;
+
+ public ShardReadTransaction(AbstractShardDataTreeTransaction<?> transaction, ActorRef shardActor,
+ ShardStats shardStats, String transactionID, short clientTxVersion) {
+ super(shardActor, shardStats, transactionID, clientTxVersion);
this.transaction = transaction;
}
} 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);
}
}
+ 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 DOMStoreTransaction getDOMStoreTransaction() {
+ protected AbstractShardDataTreeTransaction<?> getDOMStoreTransaction() {
return transaction;
}
+
+ @Override
+ protected boolean returnCloseTransactionReply() {
+ return false;
+ }
}