+++ /dev/null
-/*
- * Copyright (c) 2015 Brocade Communications Systems, Inc. and others. All rights reserved.
- *
- * This program and the accompanying materials are made available under the
- * terms of the Eclipse Public License v1.0 which accompanies this distribution,
- * and is available at http://www.eclipse.org/legal/epl-v10.html
- */
-package org.opendaylight.controller.cluster.datastore;
-
-import akka.actor.ActorSelection;
-import com.google.common.base.Preconditions;
-import com.google.common.util.concurrent.FutureCallback;
-import com.google.common.util.concurrent.Futures;
-import com.google.common.util.concurrent.SettableFuture;
-import org.opendaylight.controller.cluster.datastore.identifiers.TransactionIdentifier;
-import org.opendaylight.controller.cluster.datastore.messages.AbstractRead;
-import org.opendaylight.controller.cluster.datastore.modification.AbstractModification;
-import org.opendaylight.controller.sal.core.spi.data.DOMStoreReadTransaction;
-import org.opendaylight.controller.sal.core.spi.data.DOMStoreTransaction;
-import org.opendaylight.controller.sal.core.spi.data.DOMStoreWriteTransaction;
-import scala.concurrent.Future;
-
-/**
- * Processes front-end transaction operations locally before being committed to the destination shard.
- * Instances of this class are used when the destination shard is local to the caller.
- *
- * @author Thomas Pantelis
- */
-abstract class LocalTransactionContext extends AbstractTransactionContext {
- private final DOMStoreTransaction txDelegate;
- private final LocalTransactionReadySupport readySupport;
- private Exception operationError;
-
- LocalTransactionContext(DOMStoreTransaction txDelegate, TransactionIdentifier identifier,
- LocalTransactionReadySupport readySupport) {
- super(identifier);
- this.txDelegate = Preconditions.checkNotNull(txDelegate);
- this.readySupport = readySupport;
- }
-
- protected abstract DOMStoreWriteTransaction getWriteDelegate();
-
- protected abstract DOMStoreReadTransaction getReadDelegate();
-
- @Override
- public void executeModification(AbstractModification modification) {
- incrementModificationCount();
- if(operationError == null) {
- try {
- modification.apply(getWriteDelegate());
- } catch (Exception e) {
- operationError = e;
- }
- }
- }
-
- @Override
- public <T> void executeRead(AbstractRead<T> readCmd, final SettableFuture<T> proxyFuture) {
- Futures.addCallback(readCmd.apply(getReadDelegate()), new FutureCallback<T>() {
- @Override
- public void onSuccess(final T result) {
- proxyFuture.set(result);
- }
-
- @Override
- public void onFailure(final Throwable t) {
- proxyFuture.setException(t);
- }
- });
- }
-
- private LocalThreePhaseCommitCohort ready() {
- logModificationCount();
- return readySupport.onTransactionReady(getWriteDelegate(), operationError);
- }
-
- @Override
- public Future<ActorSelection> readyTransaction() {
- final LocalThreePhaseCommitCohort cohort = ready();
- return cohort.initiateCoordinatedCommit();
- }
-
- @Override
- public Future<Object> directCommit() {
- final LocalThreePhaseCommitCohort cohort = ready();
- return cohort.initiateDirectCommit();
- }
-
- @Override
- public boolean supportsDirectCommit() {
- return true;
- }
-
- @Override
- public void closeTransaction() {
- txDelegate.close();
- }
-}