*/
package org.opendaylight.controller.md.sal.dom.store.impl;
-import static com.google.common.base.Preconditions.checkState;
import com.google.common.base.Optional;
import com.google.common.base.Preconditions;
-import com.google.common.util.concurrent.Futures;
-import com.google.common.util.concurrent.ListenableFuture;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicLong;
import org.opendaylight.controller.md.sal.common.api.data.AsyncDataBroker.DataChangeScope;
import org.opendaylight.controller.md.sal.common.api.data.AsyncDataChangeListener;
-import org.opendaylight.controller.md.sal.common.api.data.OptimisticLockFailedException;
-import org.opendaylight.controller.md.sal.common.api.data.TransactionCommitFailedException;
import org.opendaylight.controller.md.sal.dom.api.DOMDataTreeChangeListener;
import org.opendaylight.controller.md.sal.dom.store.impl.tree.ListenerTree;
-import org.opendaylight.controller.sal.core.spi.data.AbstractDOMStoreTransaction;
import org.opendaylight.controller.sal.core.spi.data.DOMStore;
import org.opendaylight.controller.sal.core.spi.data.DOMStoreReadTransaction;
import org.opendaylight.controller.sal.core.spi.data.DOMStoreReadWriteTransaction;
import org.opendaylight.yangtools.util.concurrent.QueuedNotificationManager.Invoker;
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.ConflictingModificationAppliedException;
import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTree;
import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeCandidate;
import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeModification;
*/
public class InMemoryDOMDataStore extends TransactionReadyPrototype<String> implements DOMStore, Identifiable<String>, SchemaContextListener, AutoCloseable, DOMStoreTreeChangePublisher {
private static final Logger LOG = LoggerFactory.getLogger(InMemoryDOMDataStore.class);
- private static final ListenableFuture<Void> SUCCESSFUL_FUTURE = Futures.immediateFuture(null);
- private static final ListenableFuture<Boolean> CAN_COMMIT_FUTURE = Futures.immediateFuture(Boolean.TRUE);
private static final Invoker<DataChangeListenerRegistration<?>, DOMImmutableDataChangeEvent> DCL_NOTIFICATION_MGR_INVOKER =
new Invoker<DataChangeListenerRegistration<?>, DOMImmutableDataChangeEvent>() {
}
@Override
- protected DOMStoreThreePhaseCommitCohort transactionReady(final SnapshotBackedWriteTransaction<String> tx, final DataTreeModification tree) {
- LOG.debug("Tx: {} is submitted. Modifications: {}", tx.getIdentifier(), tree);
- return new ThreePhaseCommitImpl(tx, tree);
+ protected DOMStoreThreePhaseCommitCohort transactionReady(final SnapshotBackedWriteTransaction<String> tx, final DataTreeModification modification) {
+ LOG.debug("Tx: {} is submitted. Modifications: {}", tx.getIdentifier(), modification);
+ return new InMemoryDOMStoreThreePhaseCommitCohort(this, tx, modification);
}
String nextIdentifier() {
return name + "-" + txCounter.getAndIncrement();
}
- private static void warnDebugContext(final AbstractDOMStoreTransaction<?> transaction) {
- final Throwable ctx = transaction.getDebugContext();
- if (ctx != null) {
- LOG.warn("Transaction {} has been allocated in the following context", transaction.getIdentifier(), ctx);
- }
+ void validate(final DataTreeModification modification) throws DataValidationFailedException {
+ dataTree.validate(modification);
}
- private final class ThreePhaseCommitImpl implements DOMStoreThreePhaseCommitCohort {
- private final SnapshotBackedWriteTransaction<String> transaction;
- private final DataTreeModification modification;
-
- private ResolveDataChangeEventsTask listenerResolver;
- private DataTreeCandidate candidate;
-
- public ThreePhaseCommitImpl(final SnapshotBackedWriteTransaction<String> writeTransaction, final DataTreeModification modification) {
- this.transaction = writeTransaction;
- this.modification = modification;
- }
-
- @Override
- public ListenableFuture<Boolean> canCommit() {
- try {
- dataTree.validate(modification);
- LOG.debug("Store Transaction: {} can be committed", transaction.getIdentifier());
- return CAN_COMMIT_FUTURE;
- } catch (ConflictingModificationAppliedException e) {
- LOG.warn("Store Tx: {} Conflicting modification for {}.", transaction.getIdentifier(),
- e.getPath());
- warnDebugContext(transaction);
- return Futures.immediateFailedFuture(new OptimisticLockFailedException("Optimistic lock failed.", e));
- } catch (DataValidationFailedException e) {
- LOG.warn("Store Tx: {} Data Precondition failed for {}.", transaction.getIdentifier(),
- e.getPath(), e);
- warnDebugContext(transaction);
-
- // For debugging purposes, allow dumping of the modification. Coupled with the above
- // precondition log, it should allow us to understand what went on.
- LOG.trace("Store Tx: {} modifications: {} tree: {}", modification, dataTree);
-
- return Futures.immediateFailedFuture(new TransactionCommitFailedException("Data did not pass validation.", e));
- } catch (Exception e) {
- LOG.warn("Unexpected failure in validation phase", e);
- return Futures.immediateFailedFuture(e);
- }
- }
-
- @Override
- public ListenableFuture<Void> preCommit() {
- try {
- candidate = dataTree.prepare(modification);
- listenerResolver = ResolveDataChangeEventsTask.create(candidate, listenerTree);
- return SUCCESSFUL_FUTURE;
- } catch (Exception e) {
- LOG.warn("Unexpected failure in pre-commit phase", e);
- return Futures.immediateFailedFuture(e);
- }
- }
-
- @Override
- public ListenableFuture<Void> abort() {
- candidate = null;
- return SUCCESSFUL_FUTURE;
- }
-
- @Override
- public ListenableFuture<Void> commit() {
- checkState(candidate != null, "Proposed subtree must be computed");
-
- /*
- * The commit has to occur atomically with regard to listener
- * registrations.
- */
- synchronized (InMemoryDOMDataStore.this) {
- dataTree.commit(candidate);
- changePublisher.publishChange(candidate);
- listenerResolver.resolve(dataChangeListenerNotificationManager);
- }
+ DataTreeCandidate prepare(final DataTreeModification modification) {
+ return dataTree.prepare(modification);
+ }
- return SUCCESSFUL_FUTURE;
- }
+ synchronized void commit(final DataTreeCandidate candidate) {
+ dataTree.commit(candidate);
+ changePublisher.publishChange(candidate);
+ ResolveDataChangeEventsTask.create(candidate, listenerTree).resolve(dataChangeListenerNotificationManager);
}
}
Code Review / controller.git / blobdiff