import javax.annotation.concurrent.NotThreadSafe;
import org.opendaylight.controller.cluster.access.concepts.LocalHistoryIdentifier;
import org.opendaylight.controller.cluster.access.concepts.TransactionIdentifier;
+import org.opendaylight.yangtools.concepts.Identifiable;
+import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeModification;
import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeSnapshot;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
* A transaction chain attached to a Shard.
*/
@NotThreadSafe
-final class ShardDataTreeTransactionChain extends ShardDataTreeTransactionParent {
+final class ShardDataTreeTransactionChain extends ShardDataTreeTransactionParent
+ implements Identifiable<LocalHistoryIdentifier> {
+
private static final Logger LOG = LoggerFactory.getLogger(ShardDataTreeTransactionChain.class);
- private final ShardDataTree dataTree;
private final LocalHistoryIdentifier chainId;
+ private final ShardDataTree dataTree;
private ReadWriteShardDataTreeTransaction previousTx;
private ReadWriteShardDataTreeTransaction openTransaction;
private boolean closed;
ShardDataTreeTransactionChain(final LocalHistoryIdentifier localHistoryIdentifier, final ShardDataTree dataTree) {
- this.dataTree = Preconditions.checkNotNull(dataTree);
this.chainId = Preconditions.checkNotNull(localHistoryIdentifier);
+ this.dataTree = Preconditions.checkNotNull(dataTree);
}
private DataTreeSnapshot getSnapshot() {
Preconditions.checkState(openTransaction == null, "Transaction %s is open", openTransaction);
if (previousTx == null) {
+ LOG.debug("Opening an unchained snapshot in {}", chainId);
return dataTree.takeSnapshot();
- } else {
- return previousTx.getSnapshot();
}
+
+ LOG.debug("Reusing a chained snapshot in {}", chainId);
+ return previousTx.getSnapshot();
}
ReadOnlyShardDataTreeTransaction newReadOnlyTransaction(final TransactionIdentifier txId) {
void close() {
closed = true;
+ LOG.debug("Closing chain {}", chainId);
}
@Override
return MoreObjects.toStringHelper(this).add("id", chainId).toString();
}
- void clearTransaction(ReadWriteShardDataTreeTransaction transaction) {
+ void clearTransaction(final ReadWriteShardDataTreeTransaction transaction) {
if (transaction.equals(previousTx)) {
previousTx = null;
}
}
+
+ @Override
+ public LocalHistoryIdentifier getIdentifier() {
+ return chainId;
+ }
+
+ @Override
+ ShardDataTreeCohort createReadyCohort(final TransactionIdentifier txId, final DataTreeModification modification) {
+ return dataTree.createReadyCohort(txId, modification);
+ }
}