2 * Copyright (c) 2015 Cisco Systems, Inc. and others. All rights reserved.
4 * This program and the accompanying materials are made available under the
5 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
6 * and is available at http://www.eclipse.org/legal/epl-v10.html
8 package org.opendaylight.mdsal.common.api;
10 import com.google.common.annotations.Beta;
11 import com.google.common.util.concurrent.FluentFuture;
12 import com.google.common.util.concurrent.ListenableFuture;
13 import javax.annotation.Nonnull;
14 import org.opendaylight.yangtools.util.concurrent.FluentFutures;
17 * User implementation of steps following can-commit in three phase protocol.
18 * If no additional visibility into transaction and data being aborted or committed is needed, use
19 * {@link #NOOP} implementation.
23 public interface PostCanCommitStep extends ThreePhaseCommitStep {
26 * No-op implementation of abort, pre-commit and commit steps.
27 * This implementation should be used if user logic does only validation of data and does not
28 * need to perform any actions associated with pre-commit, commit or abort.
30 PostCanCommitStep NOOP = new PostCanCommitStep() {
33 public ListenableFuture<?> abort() {
34 return ThreePhaseCommitStep.NOOP_ABORT_FUTURE;
38 public ListenableFuture<? extends PostPreCommitStep> preCommit() {
39 return PostPreCommitStep.NOOP_FUTURE;
43 FluentFuture<PostCanCommitStep> NOOP_SUCCESSFUL_FUTURE = FluentFutures.immediateFluentFuture(NOOP);
46 * Initiates a pre-commit of associated request
47 * Implementation MUST NOT do any blocking calls during this callback, all pre-commit
48 * preparation SHOULD happen asynchronously and MUST result in completing returned future
51 * @return Future which is completed once pre-commit phase for this request is finished.
55 ListenableFuture<? extends PostPreCommitStep> preCommit();