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 org.eclipse.jdt.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.
22 public interface PostCanCommitStep extends ThreePhaseCommitStep {
24 * No-op implementation of abort, pre-commit and commit steps.
25 * This implementation should be used if user logic does only validation of data and does not
26 * need to perform any actions associated with pre-commit, commit or abort.
28 PostCanCommitStep NOOP = new PostCanCommitStep() {
31 public ListenableFuture<?> abort() {
32 return ThreePhaseCommitStep.NOOP_ABORT_FUTURE;
36 public ListenableFuture<? extends PostPreCommitStep> preCommit() {
37 return PostPreCommitStep.NOOP_FUTURE;
41 @NonNull FluentFuture<PostCanCommitStep> NOOP_SUCCESSFUL_FUTURE = FluentFutures.immediateFluentFuture(NOOP);
44 * Initiates a pre-commit of associated request
45 * Implementation MUST NOT do any blocking calls during this callback, all pre-commit
46 * preparation SHOULD happen asynchronously and MUST result in completing returned future
49 * @return Future which is completed once pre-commit phase for this request is finished.
51 @NonNull ListenableFuture<? extends PostPreCommitStep> preCommit();