package org.opendaylight.controller.md.sal.dom.store.impl;
import static com.google.common.base.Preconditions.checkNotNull;
-
import com.google.common.base.Optional;
import com.google.common.util.concurrent.CheckedFuture;
import com.google.common.util.concurrent.Futures;
-
import org.opendaylight.controller.md.sal.common.api.data.ReadFailedException;
import org.opendaylight.controller.sal.core.spi.data.DOMStoreReadWriteTransaction;
import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
-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;
* and executed according to {@link TransactionReadyPrototype}.
*
*/
-class SnapshotBackedReadWriteTransaction extends SnapshotBackedWriteTransaction
- implements DOMStoreReadWriteTransaction {
-
+final class SnapshotBackedReadWriteTransaction extends SnapshotBackedWriteTransaction implements DOMStoreReadWriteTransaction {
private static final Logger LOG = LoggerFactory.getLogger(SnapshotBackedReadWriteTransaction.class);
/**
LOG.debug("Tx: {} Read: {}", getIdentifier(), path);
checkNotNull(path, "Path must not be null.");
- DataTreeModification dataView = getMutatedView();
- if(dataView == null) {
- return Futures.immediateFailedCheckedFuture(new ReadFailedException("Transaction is closed"));
- }
-
+ final Optional<NormalizedNode<?, ?>> result;
try {
- return Futures.immediateCheckedFuture(dataView.readNode(path));
+ result = readSnapshotNode(path);
} catch (Exception e) {
LOG.error("Tx: {} Failed Read of {}", getIdentifier(), path, e);
- return Futures.immediateFailedCheckedFuture(new ReadFailedException("Read failed",e));
+ return Futures.immediateFailedCheckedFuture(new ReadFailedException("Read failed", e));
+ }
+
+ if (result == null) {
+ return Futures.immediateFailedCheckedFuture(new ReadFailedException("Transaction is closed"));
+ } else {
+ return Futures.immediateCheckedFuture(result);
}
}