import static com.google.common.base.Preconditions.checkNotNull;
import static com.google.common.base.Preconditions.checkState;
-import static org.opendaylight.controller.md.sal.dom.store.impl.StoreUtils.increase;
import java.util.Collections;
import java.util.concurrent.Callable;
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.dom.store.impl.tree.DataPreconditionFailedException;
+import org.opendaylight.controller.md.sal.dom.store.impl.tree.DataTree;
+import org.opendaylight.controller.md.sal.dom.store.impl.tree.DataTreeCandidate;
+import org.opendaylight.controller.md.sal.dom.store.impl.tree.DataTreeModification;
+import org.opendaylight.controller.md.sal.dom.store.impl.tree.DataTreeSnapshot;
import org.opendaylight.controller.md.sal.dom.store.impl.tree.ListenerTree;
-import org.opendaylight.controller.md.sal.dom.store.impl.tree.ModificationType;
-import org.opendaylight.controller.md.sal.dom.store.impl.tree.NodeModification;
-import org.opendaylight.controller.md.sal.dom.store.impl.tree.StoreMetadataNode;
+import org.opendaylight.controller.md.sal.dom.store.impl.tree.data.InMemoryDataTreeFactory;
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.concepts.Identifiable;
import org.opendaylight.yangtools.concepts.ListenerRegistration;
import org.opendaylight.yangtools.yang.data.api.InstanceIdentifier;
-import org.opendaylight.yangtools.yang.data.api.InstanceIdentifier.PathArgument;
import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
import org.opendaylight.yangtools.yang.model.api.SchemaContext;
import org.opendaylight.yangtools.yang.model.api.SchemaContextListener;
import com.google.common.base.Objects.ToStringHelper;
import com.google.common.base.Optional;
import com.google.common.base.Preconditions;
-import com.google.common.primitives.UnsignedLong;
import com.google.common.util.concurrent.Futures;
import com.google.common.util.concurrent.ListenableFuture;
import com.google.common.util.concurrent.ListeningExecutorService;
public class InMemoryDOMDataStore implements DOMStore, Identifiable<String>, SchemaContextListener {
-
private static final Logger LOG = LoggerFactory.getLogger(InMemoryDOMDataStore.class);
- private static final InstanceIdentifier PUBLIC_ROOT_PATH = InstanceIdentifier.builder().build();
-
+ private final DataTree dataTree = InMemoryDataTreeFactory.getInstance().create();
+ private final ListenerTree listenerTree = ListenerTree.create();
+ private final AtomicLong txCounter = new AtomicLong(0);
private final ListeningExecutorService executor;
private final String name;
- private final AtomicLong txCounter = new AtomicLong(0);
- private final ListenerTree listenerTree = ListenerTree.create();
- private final DataTree dataTree = DataTree.create(null);
- private ModificationApplyOperation operationTree = new AlwaysFailOperation();
public InMemoryDOMDataStore(final String name, final ListeningExecutorService executor) {
this.name = Preconditions.checkNotNull(name);
@Override
public DOMStoreReadWriteTransaction newReadWriteTransaction() {
- return new SnapshotBackedReadWriteTransaction(nextIdentifier(), dataTree.takeSnapshot(), this, operationTree);
+ return new SnapshotBackedReadWriteTransaction(nextIdentifier(), dataTree.takeSnapshot(), this);
}
@Override
public DOMStoreWriteTransaction newWriteOnlyTransaction() {
- return new SnapshotBackedWriteTransaction(nextIdentifier(), dataTree.takeSnapshot(), this, operationTree);
+ return new SnapshotBackedWriteTransaction(nextIdentifier(), dataTree.takeSnapshot(), this);
}
@Override
public synchronized void onGlobalContextUpdated(final SchemaContext ctx) {
- /*
- * Order of operations is important: dataTree may reject the context
- * and creation of ModificationApplyOperation may fail. So pre-construct
- * the operation, then update the data tree and then move the operation
- * into view.
- */
- final ModificationApplyOperation newOperationTree = SchemaAwareApplyOperationRoot.from(ctx);
dataTree.setSchemaContext(ctx);
- operationTree = newOperationTree;
}
@Override
return name + "-" + txCounter.getAndIncrement();
}
- private void commit(final DataTree.Snapshot currentSnapshot, final StoreMetadataNode newDataTree,
- final ResolveDataChangeEventsTask listenerResolver) {
- LOG.debug("Updating Store snaphot version: {} with version:{}", currentSnapshot, newDataTree.getSubtreeVersion());
-
- if (LOG.isTraceEnabled()) {
- LOG.trace("Data Tree is {}", StoreUtils.toStringTree(newDataTree.getData()));
- }
-
- /*
- * The commit has to occur atomically with regard to listener
- * registrations.
- */
- synchronized (this) {
- dataTree.commitSnapshot(currentSnapshot, newDataTree);
-
- for (ChangeListenerNotifyTask task : listenerResolver.call()) {
- LOG.trace("Scheduling invocation of listeners: {}", task);
- executor.submit(task);
- }
- }
- }
-
private static abstract class AbstractDOMStoreTransaction implements DOMStoreTransaction {
private final Object identifier;
}
private static final class SnapshotBackedReadTransaction extends AbstractDOMStoreTransaction implements
- DOMStoreReadTransaction {
- private DataTree.Snapshot stableSnapshot;
+ DOMStoreReadTransaction {
+ private DataTreeSnapshot stableSnapshot;
- public SnapshotBackedReadTransaction(final Object identifier, final DataTree.Snapshot snapshot) {
+ public SnapshotBackedReadTransaction(final Object identifier, final DataTreeSnapshot snapshot) {
super(identifier);
this.stableSnapshot = Preconditions.checkNotNull(snapshot);
LOG.debug("ReadOnly Tx: {} allocated with snapshot {}", identifier, snapshot);
}
private static class SnapshotBackedWriteTransaction extends AbstractDOMStoreTransaction implements
- DOMStoreWriteTransaction {
- private MutableDataTree mutableTree;
+ DOMStoreWriteTransaction {
+ private DataTreeModification mutableTree;
private InMemoryDOMDataStore store;
private boolean ready = false;
- public SnapshotBackedWriteTransaction(final Object identifier, final DataTree.Snapshot snapshot,
- final InMemoryDOMDataStore store, final ModificationApplyOperation applyOper) {
+ public SnapshotBackedWriteTransaction(final Object identifier, final DataTreeSnapshot snapshot,
+ final InMemoryDOMDataStore store) {
super(identifier);
- mutableTree = MutableDataTree.from(snapshot, applyOper);
+ mutableTree = snapshot.newModification();
this.store = store;
LOG.debug("Write Tx: {} allocated with snapshot {}", identifier, snapshot);
}
return store.submit(this);
}
- protected MutableDataTree getMutatedView() {
+ protected DataTreeModification getMutatedView() {
return mutableTree;
}
}
private static class SnapshotBackedReadWriteTransaction extends SnapshotBackedWriteTransaction implements
- DOMStoreReadWriteTransaction {
+ DOMStoreReadWriteTransaction {
- protected SnapshotBackedReadWriteTransaction(final Object identifier, final DataTree.Snapshot snapshot,
- final InMemoryDOMDataStore store, final ModificationApplyOperation applyOper) {
- super(identifier, snapshot, store, applyOper);
+ protected SnapshotBackedReadWriteTransaction(final Object identifier, final DataTreeSnapshot snapshot,
+ final InMemoryDOMDataStore store) {
+ super(identifier, snapshot, store);
}
@Override
public ListenableFuture<Optional<NormalizedNode<?, ?>>> read(final InstanceIdentifier path) {
LOG.trace("Tx: {} Read: {}", getIdentifier(), path);
try {
- return Futures.immediateFuture(getMutatedView().read(path));
+ return Futures.immediateFuture(getMutatedView().readNode(path));
} catch (Exception e) {
LOG.error("Tx: {} Failed Read of {}", getIdentifier(), path, e);
throw e;
private class ThreePhaseCommitImpl implements DOMStoreThreePhaseCommitCohort {
private final SnapshotBackedWriteTransaction transaction;
- private final NodeModification modification;
+ private final DataTreeModification modification;
- private DataTree.Snapshot storeSnapshot;
- private Optional<StoreMetadataNode> proposedSubtree;
private ResolveDataChangeEventsTask listenerResolver;
+ private DataTreeCandidate candidate;
public ThreePhaseCommitImpl(final SnapshotBackedWriteTransaction writeTransaction) {
this.transaction = writeTransaction;
- this.modification = transaction.getMutatedView().getRootModification();
+ this.modification = transaction.getMutatedView();
}
@Override
public ListenableFuture<Boolean> canCommit() {
- final DataTree.Snapshot snapshotCapture = dataTree.takeSnapshot();
- final ModificationApplyOperation snapshotOperation = operationTree;
-
return executor.submit(new Callable<Boolean>() {
-
@Override
- public Boolean call() throws Exception {
- Boolean applicable = false;
+ public Boolean call() {
try {
- snapshotOperation.checkApplicable(PUBLIC_ROOT_PATH, modification,
- Optional.of(snapshotCapture.getRootNode()));
- applicable = true;
+ dataTree.validate(modification);
+ LOG.debug("Store Transaction: {} can be committed", transaction.getIdentifier());
+ return true;
} catch (DataPreconditionFailedException e) {
LOG.warn("Store Tx: {} Data Precondition failed for {}.",transaction.getIdentifier(),e.getPath(),e);
- applicable = false;
+ return false;
}
- LOG.debug("Store Transaction: {} : canCommit : {}", transaction.getIdentifier(), applicable);
- return applicable;
}
});
}
@Override
public ListenableFuture<Void> preCommit() {
- storeSnapshot = dataTree.takeSnapshot();
- if (modification.getModificationType() == ModificationType.UNMODIFIED) {
- return Futures.immediateFuture(null);
- }
return executor.submit(new Callable<Void>() {
-
@Override
- public Void call() throws Exception {
- StoreMetadataNode metadataTree = storeSnapshot.getRootNode();
-
- proposedSubtree = operationTree.apply(modification, Optional.of(metadataTree),
- increase(metadataTree.getSubtreeVersion()));
-
- listenerResolver = ResolveDataChangeEventsTask.create() //
- .setRootPath(PUBLIC_ROOT_PATH) //
- .setBeforeRoot(Optional.of(metadataTree)) //
- .setAfterRoot(proposedSubtree) //
- .setModificationRoot(modification) //
- .setListenerRoot(listenerTree);
-
+ public Void call() {
+ candidate = dataTree.prepare(modification);
+ listenerResolver = ResolveDataChangeEventsTask.create(candidate, listenerTree);
return null;
}
});
@Override
public ListenableFuture<Void> abort() {
- storeSnapshot = null;
- proposedSubtree = null;
- return Futures.<Void> immediateFuture(null);
+ candidate = null;
+ return Futures.immediateFuture(null);
}
@Override
public ListenableFuture<Void> commit() {
- if (modification.getModificationType() == ModificationType.UNMODIFIED) {
- return Futures.immediateFuture(null);
+ checkState(candidate != null, "Proposed subtree must be computed");
+
+ /*
+ * The commit has to occur atomically with regard to listener
+ * registrations.
+ */
+ synchronized (this) {
+ dataTree.commit(candidate);
+
+ for (ChangeListenerNotifyTask task : listenerResolver.call()) {
+ LOG.trace("Scheduling invocation of listeners: {}", task);
+ executor.submit(task);
+ }
}
- checkState(proposedSubtree != null, "Proposed subtree must be computed");
- checkState(storeSnapshot != null, "Proposed subtree must be computed");
- // return ImmediateFuture<>;
- InMemoryDOMDataStore.this.commit(storeSnapshot, proposedSubtree.get(), listenerResolver);
- return Futures.<Void> immediateFuture(null);
- }
-
- }
-
- private static final class AlwaysFailOperation implements ModificationApplyOperation {
-
- @Override
- public Optional<StoreMetadataNode> apply(final NodeModification modification,
- final Optional<StoreMetadataNode> storeMeta, final UnsignedLong subtreeVersion) {
- throw new IllegalStateException("Schema Context is not available.");
+ return Futures.immediateFuture(null);
}
-
- @Override
- public void checkApplicable(final InstanceIdentifier path,final NodeModification modification, final Optional<StoreMetadataNode> storeMetadata) {
- throw new IllegalStateException("Schema Context is not available.");
- }
-
- @Override
- public Optional<ModificationApplyOperation> getChild(final PathArgument child) {
- throw new IllegalStateException("Schema Context is not available.");
- }
-
- @Override
- public void verifyStructure(final NodeModification modification) throws IllegalArgumentException {
- throw new IllegalStateException("Schema Context is not available.");
- }
-
}
}
Code Review / controller.git / blobdiff