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com.google.gerrit.server.restapi.change.Rebase Maven / Gradle / Ivy
// Copyright (C) 2013 The Android Open Source Project
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package com.google.gerrit.server.restapi.change;
import static com.google.gerrit.server.project.ProjectCache.illegalState;
import static com.google.gerrit.server.update.context.RefUpdateContext.RefUpdateType.CHANGE_MODIFICATION;
import com.google.common.collect.ImmutableSet;
import com.google.common.collect.Sets;
import com.google.gerrit.entities.Change;
import com.google.gerrit.entities.PatchSet;
import com.google.gerrit.extensions.api.changes.RebaseInput;
import com.google.gerrit.extensions.client.ListChangesOption;
import com.google.gerrit.extensions.common.ChangeInfo;
import com.google.gerrit.extensions.restapi.ResourceConflictException;
import com.google.gerrit.extensions.restapi.Response;
import com.google.gerrit.extensions.restapi.RestApiException;
import com.google.gerrit.extensions.restapi.RestModifyView;
import com.google.gerrit.extensions.webui.UiAction;
import com.google.gerrit.server.IdentifiedUser;
import com.google.gerrit.server.PatchSetUtil;
import com.google.gerrit.server.change.ChangeJson;
import com.google.gerrit.server.change.ChangeResource;
import com.google.gerrit.server.change.NotifyResolver;
import com.google.gerrit.server.change.RebaseChangeOp;
import com.google.gerrit.server.change.RebaseUtil;
import com.google.gerrit.server.change.RevisionResource;
import com.google.gerrit.server.git.CodeReviewCommit;
import com.google.gerrit.server.git.GitRepositoryManager;
import com.google.gerrit.server.permissions.ChangePermission;
import com.google.gerrit.server.permissions.PermissionBackend;
import com.google.gerrit.server.permissions.PermissionBackendException;
import com.google.gerrit.server.project.ProjectCache;
import com.google.gerrit.server.update.BatchUpdate;
import com.google.gerrit.server.update.UpdateException;
import com.google.gerrit.server.update.context.RefUpdateContext;
import com.google.gerrit.server.util.time.TimeUtil;
import com.google.inject.Inject;
import com.google.inject.Singleton;
import java.io.IOException;
import org.eclipse.jgit.lib.ObjectInserter;
import org.eclipse.jgit.lib.ObjectReader;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.revwalk.RevWalk;
@Singleton
public class Rebase
implements RestModifyView, UiAction {
private static final ImmutableSet OPTIONS =
Sets.immutableEnumSet(ListChangesOption.CURRENT_REVISION, ListChangesOption.CURRENT_COMMIT);
private final BatchUpdate.Factory updateFactory;
private final GitRepositoryManager repoManager;
private final RebaseUtil rebaseUtil;
private final ChangeJson.Factory json;
private final PermissionBackend permissionBackend;
private final ProjectCache projectCache;
private final PatchSetUtil patchSetUtil;
private final RebaseMetrics rebaseMetrics;
private final IdentifiedUser.GenericFactory userFactory;
@Inject
public Rebase(
BatchUpdate.Factory updateFactory,
GitRepositoryManager repoManager,
RebaseUtil rebaseUtil,
ChangeJson.Factory json,
PermissionBackend permissionBackend,
ProjectCache projectCache,
PatchSetUtil patchSetUtil,
RebaseMetrics rebaseMetrics,
IdentifiedUser.GenericFactory userFactory) {
this.updateFactory = updateFactory;
this.repoManager = repoManager;
this.rebaseUtil = rebaseUtil;
this.json = json;
this.permissionBackend = permissionBackend;
this.projectCache = projectCache;
this.patchSetUtil = patchSetUtil;
this.rebaseMetrics = rebaseMetrics;
this.userFactory = userFactory;
}
@Override
public Response apply(RevisionResource rsrc, RebaseInput input)
throws UpdateException, RestApiException, IOException, PermissionBackendException {
IdentifiedUser rebaseAsUser;
if (input.onBehalfOfUploader && !rsrc.getPatchSet().uploader().equals(rsrc.getAccountId())) {
rebaseAsUser =
userFactory.runAs(/*remotePeer= */ null, rsrc.getPatchSet().uploader(), rsrc.getUser());
rsrc.permissions().check(ChangePermission.REBASE_ON_BEHALF_OF_UPLOADER);
rebaseUtil.checkCanRebaseOnBehalfOf(rsrc, input);
} else {
rebaseAsUser = rsrc.getUser().asIdentifiedUser();
input.onBehalfOfUploader = false;
rsrc.permissions().check(ChangePermission.REBASE);
}
projectCache
.get(rsrc.getProject())
.orElseThrow(illegalState(rsrc.getProject()))
.checkStatePermitsWrite();
Change change = rsrc.getChange();
try (RefUpdateContext ctx = RefUpdateContext.open(CHANGE_MODIFICATION)) {
try (Repository repo = repoManager.openRepository(change.getProject());
ObjectInserter oi = repo.newObjectInserter();
ObjectReader reader = oi.newReader();
RevWalk rw = CodeReviewCommit.newRevWalk(reader);
BatchUpdate bu =
updateFactory.create(change.getProject(), rebaseAsUser, TimeUtil.now())) {
rebaseUtil.verifyRebasePreconditions(rw, rsrc.getNotes(), rsrc.getPatchSet());
RebaseChangeOp rebaseOp =
rebaseUtil.getRebaseOp(
rw,
rsrc,
input,
rebaseUtil.parseOrFindBaseRevision(repo, rw, permissionBackend, rsrc, input, true),
rebaseAsUser);
// TODO(dborowitz): Why no notification? This seems wrong; dig up blame.
bu.setNotify(NotifyResolver.Result.none());
bu.setRepository(repo, rw, oi);
bu.addOp(change.getId(), rebaseOp);
bu.execute();
rebaseMetrics.countRebase(input.onBehalfOfUploader, input.allowConflicts);
ChangeInfo changeInfo = json.create(OPTIONS).format(change.getProject(), change.getId());
changeInfo.containsGitConflicts =
!rebaseOp.getRebasedCommit().getFilesWithGitConflicts().isEmpty() ? true : null;
return Response.ok(changeInfo);
}
}
}
@Override
public UiAction.Description getDescription(RevisionResource rsrc) throws IOException {
UiAction.Description description =
new UiAction.Description()
.setLabel("Rebase")
.setTitle("Rebase onto tip of branch or parent change.")
.setVisible(false);
Change change = rsrc.getChange();
if (!(change.isNew() && rsrc.isCurrent())) {
return description;
}
if (!projectCache
.get(rsrc.getProject())
.orElseThrow(illegalState(rsrc.getProject()))
.statePermitsWrite()) {
return description;
}
if (patchSetUtil.isPatchSetLocked(rsrc.getNotes())) {
return description;
}
boolean enabled = false;
try (Repository repo = repoManager.openRepository(change.getDest().project());
RevWalk rw = new RevWalk(repo)) {
if (RebaseUtil.hasAtLeastOneParent(rw, rsrc.getPatchSet())) {
enabled = rebaseUtil.canRebase(rsrc.getPatchSet(), change.getDest(), repo, rw);
}
}
boolean canRebase = rsrc.permissions().testOrFalse(ChangePermission.REBASE);
boolean canRebaseOnBehalfOfUploader =
rsrc.permissions().testOrFalse(ChangePermission.REBASE_ON_BEHALF_OF_UPLOADER);
if (canRebase || canRebaseOnBehalfOfUploader) {
return description
.setOption("rebase", canRebase)
.setOption("rebase_on_behalf_of_uploader", canRebaseOnBehalfOfUploader)
.setEnabled(enabled)
.setVisible(true);
}
return description;
}
public static class CurrentRevision implements RestModifyView {
private final PatchSetUtil psUtil;
private final Rebase rebase;
@Inject
CurrentRevision(PatchSetUtil psUtil, Rebase rebase) {
this.psUtil = psUtil;
this.rebase = rebase;
}
@Override
public Response apply(ChangeResource rsrc, RebaseInput input)
throws RestApiException, UpdateException, IOException, PermissionBackendException {
PatchSet ps = psUtil.current(rsrc.getNotes());
if (ps == null) {
throw new ResourceConflictException("current revision is missing");
}
return Response.ok(rebase.apply(new RevisionResource(rsrc, ps), input).value());
}
}
}
