X-Git-Url: https://git.opendaylight.org/gerrit/gitweb?p=controller.git;a=blobdiff_plain;f=opendaylight%2Fmd-sal%2Fsal-inmemory-datastore%2Fsrc%2Fmain%2Fjava%2Forg%2Fopendaylight%2Fcontroller%2Fmd%2Fsal%2Fdom%2Fstore%2Fimpl%2FInMemoryDOMDataStore.java;h=a85d8ac3fb645ecc5a5815df3aeaf46bb8fc4187;hp=b617a8087fc771d6f413b1ec6c3dc4e5bf597aa3;hb=7fde47bbf398e73144edfd14437ca72fd12e1daa;hpb=43b03a8b90268b91fa50a9f05d9a43e4bc726042 diff --git a/opendaylight/md-sal/sal-inmemory-datastore/src/main/java/org/opendaylight/controller/md/sal/dom/store/impl/InMemoryDOMDataStore.java b/opendaylight/md-sal/sal-inmemory-datastore/src/main/java/org/opendaylight/controller/md/sal/dom/store/impl/InMemoryDOMDataStore.java index b617a8087f..a85d8ac3fb 100644 --- a/opendaylight/md-sal/sal-inmemory-datastore/src/main/java/org/opendaylight/controller/md/sal/dom/store/impl/InMemoryDOMDataStore.java +++ b/opendaylight/md-sal/sal-inmemory-datastore/src/main/java/org/opendaylight/controller/md/sal/dom/store/impl/InMemoryDOMDataStore.java @@ -7,22 +7,15 @@ */ 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.SnapshotBackedWriteTransaction.TransactionReadyPrototype; 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; @@ -30,6 +23,9 @@ import org.opendaylight.controller.sal.core.spi.data.DOMStoreThreePhaseCommitCoh import org.opendaylight.controller.sal.core.spi.data.DOMStoreTransactionChain; import org.opendaylight.controller.sal.core.spi.data.DOMStoreTreeChangePublisher; import org.opendaylight.controller.sal.core.spi.data.DOMStoreWriteTransaction; +import org.opendaylight.controller.sal.core.spi.data.SnapshotBackedTransactions; +import org.opendaylight.controller.sal.core.spi.data.SnapshotBackedWriteTransaction; +import org.opendaylight.controller.sal.core.spi.data.SnapshotBackedWriteTransaction.TransactionReadyPrototype; import org.opendaylight.yangtools.concepts.AbstractListenerRegistration; import org.opendaylight.yangtools.concepts.Identifiable; import org.opendaylight.yangtools.concepts.ListenerRegistration; @@ -38,7 +34,6 @@ import org.opendaylight.yangtools.util.concurrent.QueuedNotificationManager; 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; @@ -55,14 +50,12 @@ import org.slf4j.LoggerFactory; * * Implementation of {@link DOMStore} which uses {@link DataTree} and other * classes such as {@link SnapshotBackedWriteTransaction}. - * {@link SnapshotBackedReadTransaction} and {@link ResolveDataChangeEventsTask} + * {@link org.opendaylight.controller.sal.core.spi.data.SnapshotBackedReadTransaction} and {@link ResolveDataChangeEventsTask} * to implement {@link DOMStore} contract. * */ -public class InMemoryDOMDataStore extends TransactionReadyPrototype implements DOMStore, Identifiable, SchemaContextListener, AutoCloseable, DOMStoreTreeChangePublisher { +public class InMemoryDOMDataStore extends TransactionReadyPrototype implements DOMStore, Identifiable, SchemaContextListener, AutoCloseable, DOMStoreTreeChangePublisher { private static final Logger LOG = LoggerFactory.getLogger(InMemoryDOMDataStore.class); - private static final ListenableFuture SUCCESSFUL_FUTURE = Futures.immediateFuture(null); - private static final ListenableFuture CAN_COMMIT_FUTURE = Futures.immediateFuture(Boolean.TRUE); private static final Invoker, DOMImmutableDataChangeEvent> DCL_NOTIFICATION_MGR_INVOKER = new Invoker, DOMImmutableDataChangeEvent>() { @@ -120,17 +113,17 @@ public class InMemoryDOMDataStore extends TransactionReadyPrototype implements D @Override public DOMStoreReadTransaction newReadOnlyTransaction() { - return new SnapshotBackedReadTransaction(nextIdentifier(), debugTransactions, dataTree.takeSnapshot()); + return SnapshotBackedTransactions.newReadTransaction(nextIdentifier(), debugTransactions, dataTree.takeSnapshot()); } @Override public DOMStoreReadWriteTransaction newReadWriteTransaction() { - return new SnapshotBackedReadWriteTransaction(nextIdentifier(), debugTransactions, dataTree.takeSnapshot(), this); + return SnapshotBackedTransactions.newReadWriteTransaction(nextIdentifier(), debugTransactions, dataTree.takeSnapshot(), this); } @Override public DOMStoreWriteTransaction newWriteOnlyTransaction() { - return new SnapshotBackedWriteTransaction(nextIdentifier(), debugTransactions, dataTree.takeSnapshot(), this); + return SnapshotBackedTransactions.newWriteTransaction(nextIdentifier(), debugTransactions, dataTree.takeSnapshot(), this); } @Override @@ -205,104 +198,40 @@ public class InMemoryDOMDataStore extends TransactionReadyPrototype implements D } @Override - public ListenerRegistration registerTreeChangeListener(final YangInstanceIdentifier treeId, final L listener) { - return changePublisher.registerTreeChangeListener(treeId, listener); + public synchronized ListenerRegistration registerTreeChangeListener(final YangInstanceIdentifier treeId, final L listener) { + /* + * Make sure commit is not occurring right now. Listener has to be + * registered and its state capture enqueued at a consistent point. + */ + return changePublisher.registerTreeChangeListener(treeId, listener, dataTree.takeSnapshot()); } @Override - protected void transactionAborted(final SnapshotBackedWriteTransaction tx) { + protected void transactionAborted(final SnapshotBackedWriteTransaction tx) { LOG.debug("Tx: {} is closed.", tx.getIdentifier()); } @Override - protected DOMStoreThreePhaseCommitCohort transactionReady(final SnapshotBackedWriteTransaction tx, final DataTreeModification tree) { - LOG.debug("Tx: {} is submitted. Modifications: {}", tx.getIdentifier(), tree); - return new ThreePhaseCommitImpl(tx, tree); + protected DOMStoreThreePhaseCommitCohort transactionReady(final SnapshotBackedWriteTransaction tx, final DataTreeModification modification) { + LOG.debug("Tx: {} is submitted. Modifications: {}", tx.getIdentifier(), modification); + return new InMemoryDOMStoreThreePhaseCommitCohort(this, tx, modification); } - Object nextIdentifier() { + String nextIdentifier() { return name + "-" + txCounter.getAndIncrement(); } - private static void warnDebugContext(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 transaction; - private final DataTreeModification modification; - - private ResolveDataChangeEventsTask listenerResolver; - private DataTreeCandidate candidate; - - public ThreePhaseCommitImpl(final SnapshotBackedWriteTransaction writeTransaction, final DataTreeModification modification) { - this.transaction = writeTransaction; - this.modification = modification; - } - - @Override - public ListenableFuture 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 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 abort() { - candidate = null; - return SUCCESSFUL_FUTURE; - } - - @Override - public ListenableFuture 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); } }