*/
package org.opendaylight.controller.md.sal.dom.store.impl;
-import static com.google.common.base.Preconditions.checkNotNull;
import static com.google.common.base.Preconditions.checkState;
import java.util.Collections;
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.SnapshotBackedWriteTransaction.TransactionReadyPrototype;
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.sal.core.spi.data.DOMStoreReadTransaction;
import org.opendaylight.controller.sal.core.spi.data.DOMStoreReadWriteTransaction;
import org.opendaylight.controller.sal.core.spi.data.DOMStoreThreePhaseCommitCohort;
-import org.opendaylight.controller.sal.core.spi.data.DOMStoreTransaction;
import org.opendaylight.controller.sal.core.spi.data.DOMStoreTransactionChain;
import org.opendaylight.controller.sal.core.spi.data.DOMStoreWriteTransaction;
import org.opendaylight.yangtools.concepts.AbstractListenerRegistration;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
-import com.google.common.base.Objects;
-import com.google.common.base.Objects.ToStringHelper;
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 com.google.common.util.concurrent.ListeningExecutorService;
-public class InMemoryDOMDataStore implements DOMStore, Identifiable<String>, SchemaContextListener {
+/**
+ * In-memory DOM Data Store
+ *
+ * Implementation of {@link DOMStore} which uses {@link DataTree}
+ * and other classes such as {@link SnapshotBackedWriteTransaction}.
+ * {@link SnapshotBackedReadTransaction} and {@link ResolveDataChangeEventsTask}
+ * to implement {@link DOMStore} contract.
+ *
+ */
+public class InMemoryDOMDataStore implements DOMStore, Identifiable<String>, SchemaContextListener, TransactionReadyPrototype {
private static final Logger LOG = LoggerFactory.getLogger(InMemoryDOMDataStore.class);
private final DataTree dataTree = InMemoryDataTreeFactory.getInstance().create();
private final ListenerTree listenerTree = ListenerTree.create();
@Override
public DOMStoreTransactionChain createTransactionChain() {
- throw new UnsupportedOperationException("Not implemented yet.");
+ return new DOMStoreTransactionChainImpl();
}
@Override
};
}
- private synchronized DOMStoreThreePhaseCommitCohort submit(final SnapshotBackedWriteTransaction writeTx) {
+ @Override
+ public synchronized DOMStoreThreePhaseCommitCohort ready(final SnapshotBackedWriteTransaction writeTx) {
LOG.debug("Tx: {} is submitted. Modifications: {}", writeTx.getIdentifier(), writeTx.getMutatedView());
return new ThreePhaseCommitImpl(writeTx);
}
return name + "-" + txCounter.getAndIncrement();
}
- private static abstract class AbstractDOMStoreTransaction implements DOMStoreTransaction {
- private final Object identifier;
-
- protected AbstractDOMStoreTransaction(final Object identifier) {
- this.identifier = identifier;
- }
-
- @Override
- public final Object getIdentifier() {
- return identifier;
- }
-
- @Override
- public final String toString() {
- return addToStringAttributes(Objects.toStringHelper(this)).toString();
- }
-
- /**
- * Add class-specific toString attributes.
- *
- * @param toStringHelper
- * ToStringHelper instance
- * @return ToStringHelper instance which was passed in
- */
- protected ToStringHelper addToStringAttributes(final ToStringHelper toStringHelper) {
- return toStringHelper.add("id", identifier);
- }
- }
-
- private static final class SnapshotBackedReadTransaction extends AbstractDOMStoreTransaction implements
- DOMStoreReadTransaction {
- private DataTreeSnapshot stableSnapshot;
+ private class DOMStoreTransactionChainImpl implements DOMStoreTransactionChain, TransactionReadyPrototype {
- public SnapshotBackedReadTransaction(final Object identifier, final DataTreeSnapshot snapshot) {
- super(identifier);
- this.stableSnapshot = Preconditions.checkNotNull(snapshot);
- LOG.debug("ReadOnly Tx: {} allocated with snapshot {}", identifier, snapshot);
- }
-
- @Override
- public void close() {
- LOG.debug("Store transaction: {} : Closed", getIdentifier());
- stableSnapshot = null;
- }
+ private SnapshotBackedWriteTransaction previousOutstandingTx;
@Override
- public ListenableFuture<Optional<NormalizedNode<?, ?>>> read(final InstanceIdentifier path) {
- checkNotNull(path, "Path must not be null.");
- checkState(stableSnapshot != null, "Transaction is closed");
- return Futures.immediateFuture(stableSnapshot.readNode(path));
- }
- }
-
- private static class SnapshotBackedWriteTransaction extends AbstractDOMStoreTransaction implements
- DOMStoreWriteTransaction {
- private DataTreeModification mutableTree;
- private InMemoryDOMDataStore store;
- private boolean ready = false;
-
- public SnapshotBackedWriteTransaction(final Object identifier, final DataTreeSnapshot snapshot,
- final InMemoryDOMDataStore store) {
- super(identifier);
- mutableTree = snapshot.newModification();
- this.store = store;
- LOG.debug("Write Tx: {} allocated with snapshot {}", identifier, snapshot);
- }
-
- @Override
- public void close() {
- LOG.debug("Store transaction: {} : Closed", getIdentifier());
- this.mutableTree = null;
- this.store = null;
- }
-
- @Override
- public void write(final InstanceIdentifier path, final NormalizedNode<?, ?> data) {
- checkNotReady();
- try {
- LOG.trace("Tx: {} Write: {}:{}", getIdentifier(), path, data);
- mutableTree.write(path, data);
- // FIXME: Add checked exception
- } catch (Exception e) {
- LOG.error("Tx: {}, failed to write {}:{} in {}", getIdentifier(), path, data, mutableTree, e);
+ public synchronized DOMStoreReadTransaction newReadOnlyTransaction() {
+ final DataTreeSnapshot snapshot;
+ if(previousOutstandingTx != null) {
+ checkState(previousOutstandingTx.isReady(), "Previous transaction in chain must be ready.");
+ snapshot = previousOutstandingTx.getMutatedView();
+ } else {
+ snapshot = dataTree.takeSnapshot();
}
+ return new SnapshotBackedReadTransaction(nextIdentifier(), snapshot);
}
@Override
- public void merge(final InstanceIdentifier path, final NormalizedNode<?, ?> data) {
- checkNotReady();
- try {
- LOG.trace("Tx: {} Merge: {}:{}", getIdentifier(), path, data);
- mutableTree.merge(path, data);
- // FIXME: Add checked exception
- } catch (Exception e) {
- LOG.error("Tx: {}, failed to write {}:{} in {}", getIdentifier(), path, data, mutableTree, e);
+ public synchronized DOMStoreReadWriteTransaction newReadWriteTransaction() {
+ final DataTreeSnapshot snapshot;
+ if(previousOutstandingTx != null) {
+ checkState(previousOutstandingTx.isReady(), "Previous transaction in chain must be ready.");
+ snapshot = previousOutstandingTx.getMutatedView();
+ } else {
+ snapshot = dataTree.takeSnapshot().newModification();
}
+ SnapshotBackedReadWriteTransaction ret = new SnapshotBackedReadWriteTransaction(nextIdentifier(), snapshot,this);
+ return ret;
}
@Override
- public void delete(final InstanceIdentifier path) {
- checkNotReady();
- try {
- LOG.trace("Tx: {} Delete: {}", getIdentifier(), path);
- mutableTree.delete(path);
- // FIXME: Add checked exception
- } catch (Exception e) {
- LOG.error("Tx: {}, failed to delete {} in {}", getIdentifier(), path, mutableTree, e);
+ public synchronized DOMStoreWriteTransaction newWriteOnlyTransaction() {
+ final DataTreeSnapshot snapshot;
+ if(previousOutstandingTx != null) {
+ checkState(previousOutstandingTx.isReady(), "Previous transaction in chain must be ready.");
+ snapshot = previousOutstandingTx.getMutatedView();
+ } else {
+ snapshot = dataTree.takeSnapshot().newModification();
}
- }
-
- protected final boolean isReady() {
- return ready;
- }
-
- protected final void checkNotReady() {
- checkState(!ready, "Transaction %s is ready. No further modifications allowed.", getIdentifier());
+ SnapshotBackedWriteTransaction ret =new SnapshotBackedWriteTransaction(nextIdentifier(), snapshot,this);
+ return ret;
}
@Override
- public synchronized DOMStoreThreePhaseCommitCohort ready() {
- checkState(!ready, "Transaction %s is already ready.", getIdentifier());
- ready = true;
-
- LOG.debug("Store transaction: {} : Ready", getIdentifier());
- mutableTree.ready();
- return store.submit(this);
- }
-
- protected DataTreeModification getMutatedView() {
- return mutableTree;
+ public DOMStoreThreePhaseCommitCohort ready(final SnapshotBackedWriteTransaction tx) {
+ DOMStoreThreePhaseCommitCohort storeCohort = InMemoryDOMDataStore.this.ready(tx);
+ // FIXME: We probably want to add Transaction Chain cohort
+ return storeCohort;
}
@Override
- protected ToStringHelper addToStringAttributes(final ToStringHelper toStringHelper) {
- return toStringHelper.add("ready", isReady());
- }
- }
-
- private static class SnapshotBackedReadWriteTransaction extends SnapshotBackedWriteTransaction implements
- DOMStoreReadWriteTransaction {
+ public void close() {
+ // TODO Auto-generated method stub
- 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().readNode(path));
- } catch (Exception e) {
- LOG.error("Tx: {} Failed Read of {}", getIdentifier(), path, e);
- throw e;
- }
- }
}
private class ThreePhaseCommitImpl implements DOMStoreThreePhaseCommitCohort {
Code Review / controller.git / blobdiff