import com.google.common.util.concurrent.CheckedFuture;
import com.google.common.util.concurrent.Futures;
import java.util.function.Consumer;
+import javax.annotation.Nullable;
import javax.annotation.concurrent.NotThreadSafe;
import org.opendaylight.controller.cluster.access.commands.AbortLocalTransactionRequest;
+import org.opendaylight.controller.cluster.access.commands.AbstractLocalTransactionRequest;
import org.opendaylight.controller.cluster.access.commands.CommitLocalTransactionRequest;
+import org.opendaylight.controller.cluster.access.commands.ExistsTransactionRequest;
+import org.opendaylight.controller.cluster.access.commands.ExistsTransactionSuccess;
+import org.opendaylight.controller.cluster.access.commands.ModifyTransactionRequest;
+import org.opendaylight.controller.cluster.access.commands.ReadTransactionRequest;
+import org.opendaylight.controller.cluster.access.commands.ReadTransactionSuccess;
+import org.opendaylight.controller.cluster.access.commands.TransactionPurgeRequest;
+import org.opendaylight.controller.cluster.access.commands.TransactionRequest;
import org.opendaylight.controller.cluster.access.concepts.Response;
import org.opendaylight.controller.cluster.access.concepts.TransactionIdentifier;
-import org.opendaylight.controller.md.sal.common.api.data.ReadFailedException;
+import org.opendaylight.controller.cluster.datastore.util.AbstractDataTreeModificationCursor;
+import org.opendaylight.mdsal.common.api.ReadFailedException;
import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
+import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.PathArgument;
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;
* An {@link AbstractProxyTransaction} for dispatching a transaction towards a shard leader which is co-located with
* the client instance.
*
+ * <p>
* It requires a {@link DataTreeSnapshot}, which is used to instantiated a new {@link DataTreeModification}. Operations
* are then performed on this modification and once the transaction is submitted, the modification is sent to the shard
* leader.
*
+ * <p>
* This class is not thread-safe as usual with transactions. Since it does not interact with the backend until the
* transaction is submitted, at which point this class gets out of the picture, this is not a cause for concern.
*
* @author Robert Varga
*/
@NotThreadSafe
-final class LocalProxyTransaction extends AbstractProxyTransaction {
+abstract class LocalProxyTransaction extends AbstractProxyTransaction {
private static final Logger LOG = LoggerFactory.getLogger(LocalProxyTransaction.class);
- private static final Consumer<Response<?, ?>> ABORT_COMPLETER = response -> {
- LOG.debug("Abort completed with {}", response);
- };
private final TransactionIdentifier identifier;
- private DataTreeModification modification;
- LocalProxyTransaction(final DistributedDataStoreClientBehavior client,
- final TransactionIdentifier identifier, final DataTreeSnapshot snapshot) {
- super(client);
+ LocalProxyTransaction(final ProxyHistory parent, final TransactionIdentifier identifier) {
+ super(parent);
this.identifier = Preconditions.checkNotNull(identifier);
- this.modification = snapshot.newModification();
}
@Override
- public TransactionIdentifier getIdentifier() {
+ public final TransactionIdentifier getIdentifier() {
return identifier;
}
+ abstract DataTreeSnapshot readOnlyView();
+
+ abstract void applyModifyTransactionRequest(ModifyTransactionRequest request,
+ @Nullable Consumer<Response<?, ?>> callback);
+
@Override
- void doDelete(final YangInstanceIdentifier path) {
- modification.delete(path);
+ final CheckedFuture<Boolean, ReadFailedException> doExists(final YangInstanceIdentifier path) {
+ return Futures.immediateCheckedFuture(readOnlyView().readNode(path).isPresent());
}
@Override
- void doMerge(final YangInstanceIdentifier path, final NormalizedNode<?, ?> data) {
- modification.merge(path, data);
+ final CheckedFuture<Optional<NormalizedNode<?, ?>>, ReadFailedException> doRead(final YangInstanceIdentifier path) {
+ return Futures.immediateCheckedFuture(readOnlyView().readNode(path));
}
@Override
- void doWrite(final YangInstanceIdentifier path, final NormalizedNode<?, ?> data) {
- modification.write(path, data);
+ final void doAbort() {
+ sendAbort(new AbortLocalTransactionRequest(identifier, localActor()), response -> {
+ LOG.debug("Transaction {} abort completed with {}", identifier, response);
+ });
}
@Override
- CheckedFuture<Boolean, ReadFailedException> doExists(final YangInstanceIdentifier path) {
- return Futures.immediateCheckedFuture(modification.readNode(path).isPresent());
+ void handleForwardedLocalRequest(final AbstractLocalTransactionRequest<?> request,
+ final Consumer<Response<?, ?>> callback) {
+ if (request instanceof AbortLocalTransactionRequest) {
+ sendAbort(request, callback);
+ } else {
+ throw new IllegalArgumentException("Unhandled request" + request);
+ }
}
@Override
- CheckedFuture<Optional<NormalizedNode<?, ?>>, ReadFailedException> doRead(final YangInstanceIdentifier path) {
- return Futures.immediateCheckedFuture(modification.readNode(path));
+ void handleForwardedRemoteRequest(final TransactionRequest<?> request,
+ final @Nullable Consumer<Response<?, ?>> callback) {
+ if (request instanceof ModifyTransactionRequest) {
+ applyModifyTransactionRequest((ModifyTransactionRequest) request, callback);
+ } else if (request instanceof ReadTransactionRequest) {
+ final YangInstanceIdentifier path = ((ReadTransactionRequest) request).getPath();
+ final Optional<NormalizedNode<?, ?>> result = readOnlyView().readNode(path);
+ callback.accept(new ReadTransactionSuccess(request.getTarget(), request.getSequence(), result));
+ } else if (request instanceof ExistsTransactionRequest) {
+ final YangInstanceIdentifier path = ((ExistsTransactionRequest) request).getPath();
+ final boolean result = readOnlyView().readNode(path).isPresent();
+ callback.accept(new ExistsTransactionSuccess(request.getTarget(), request.getSequence(), result));
+ } else if (request instanceof TransactionPurgeRequest) {
+ purge();
+ } else {
+ throw new IllegalArgumentException("Unhandled request " + request);
+ }
}
@Override
- void doAbort() {
- sendRequest(new AbortLocalTransactionRequest(identifier, localActor()), ABORT_COMPLETER);
- modification = new FailedDataTreeModification(() -> new IllegalStateException("Tracker has been aborted"));
+ final void forwardToRemote(final RemoteProxyTransaction successor, final TransactionRequest<?> request,
+ final Consumer<Response<?, ?>> callback) {
+ if (request instanceof CommitLocalTransactionRequest) {
+ final CommitLocalTransactionRequest req = (CommitLocalTransactionRequest) request;
+ final DataTreeModification mod = req.getModification();
+
+ LOG.debug("Applying modification {} to successor {}", mod, successor);
+ mod.applyToCursor(new AbstractDataTreeModificationCursor() {
+ @Override
+ public void write(final PathArgument child, final NormalizedNode<?, ?> data) {
+ successor.write(current().node(child), data);
+ }
+
+ @Override
+ public void merge(final PathArgument child, final NormalizedNode<?, ?> data) {
+ successor.merge(current().node(child), data);
+ }
+
+ @Override
+ public void delete(final PathArgument child) {
+ successor.delete(current().node(child));
+ }
+ });
+
+ successor.ensureSealed();
+
+ final ModifyTransactionRequest successorReq = successor.commitRequest(req.isCoordinated());
+ successor.sendRequest(successorReq, callback);
+ } else if (request instanceof AbortLocalTransactionRequest) {
+ LOG.debug("Forwarding abort {} to successor {}", request, successor);
+ successor.abort();
+ } else if (request instanceof TransactionPurgeRequest) {
+ LOG.debug("Forwarding purge {} to successor {}", request, successor);
+ successor.purge();
+ } else {
+ throw new IllegalArgumentException("Unhandled request" + request);
+ }
}
@Override
- CommitLocalTransactionRequest doCommit(final boolean coordinated) {
- final CommitLocalTransactionRequest ret = new CommitLocalTransactionRequest(identifier, localActor(),
- modification, coordinated);
- modification = new FailedDataTreeModification(() -> new IllegalStateException("Tracker has been submitted"));
- return ret;
+ void forwardToLocal(final LocalProxyTransaction successor, final TransactionRequest<?> request,
+ final Consumer<Response<?, ?>> callback) {
+ if (request instanceof AbortLocalTransactionRequest) {
+ successor.sendAbort(request, callback);
+ } else if (request instanceof TransactionPurgeRequest) {
+ successor.purge();
+ } else {
+ throw new IllegalArgumentException("Unhandled request" + request);
+ }
+
+ LOG.debug("Forwarded request {} to successor {}", request, successor);
}
- @Override
- void doSeal() {
- modification.ready();
+ void sendAbort(final TransactionRequest<?> request, final Consumer<Response<?, ?>> callback) {
+ sendRequest(request, callback);
}
}
Code Review / controller.git / blobdiff