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// Copyright (C) 2016 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;
import static com.google.common.base.Preconditions.checkArgument;
import static com.google.gerrit.server.project.ProjectCache.illegalState;
import static java.util.Objects.requireNonNull;
import com.google.common.collect.ImmutableCollection;
import com.google.common.collect.ImmutableMap;
import com.google.common.collect.Maps;
import com.google.gerrit.common.Nullable;
import com.google.gerrit.entities.Change;
import com.google.gerrit.entities.LabelFunction;
import com.google.gerrit.entities.LabelType;
import com.google.gerrit.entities.PatchSet;
import com.google.gerrit.entities.PatchSetApproval;
import com.google.gerrit.entities.Project;
import com.google.gerrit.extensions.restapi.ResourceConflictException;
import com.google.gerrit.server.approval.ApprovalsUtil;
import com.google.gerrit.server.git.GitRepositoryManager;
import com.google.gerrit.server.notedb.ChangeNotes;
import com.google.gerrit.server.notedb.ChangeUpdate;
import com.google.gerrit.server.project.ProjectCache;
import com.google.gerrit.server.project.ProjectState;
import com.google.inject.Inject;
import com.google.inject.Provider;
import com.google.inject.Singleton;
import java.io.IOException;
import java.sql.Timestamp;
import java.util.List;
import java.util.Optional;
import java.util.Set;
import org.eclipse.jgit.lib.ObjectId;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.revwalk.RevCommit;
import org.eclipse.jgit.revwalk.RevWalk;
/** Utilities for manipulating patch sets. */
@Singleton
public class PatchSetUtil {
private final Provider<ApprovalsUtil> approvalsUtilProvider;
private final ProjectCache projectCache;
private final GitRepositoryManager repoManager;
@Inject
PatchSetUtil(
Provider<ApprovalsUtil> approvalsUtilProvider,
ProjectCache projectCache,
GitRepositoryManager repoManager) {
this.approvalsUtilProvider = approvalsUtilProvider;
this.projectCache = projectCache;
this.repoManager = repoManager;
}
public PatchSet current(ChangeNotes notes) {
return get(notes, notes.getChange().currentPatchSetId());
}
public PatchSet get(ChangeNotes notes, PatchSet.Id psId) {
return notes.load().getPatchSets().get(psId);
}
public ImmutableCollection<PatchSet> byChange(ChangeNotes notes) {
return notes.load().getPatchSets().values();
}
public ImmutableMap<PatchSet.Id, PatchSet> byChangeAsMap(ChangeNotes notes) {
return notes.load().getPatchSets();
}
public ImmutableMap<PatchSet.Id, PatchSet> getAsMap(
ChangeNotes notes, Set<PatchSet.Id> patchSetIds) {
return ImmutableMap.copyOf(Maps.filterKeys(notes.load().getPatchSets(), patchSetIds::contains));
}
public PatchSet insert(
RevWalk rw,
ChangeUpdate update,
PatchSet.Id psId,
ObjectId commit,
List<String> groups,
@Nullable String pushCertificate,
@Nullable String description)
throws IOException {
requireNonNull(groups, "groups may not be null");
ensurePatchSetMatches(psId, update);
update.setCommit(rw, commit, pushCertificate);
update.setPsDescription(description);
update.setGroups(groups);
return PatchSet.builder()
.id(psId)
.commitId(commit)
.uploader(update.getAccountId())
.createdOn(new Timestamp(update.getWhen().getTime()))
.groups(groups)
.pushCertificate(Optional.ofNullable(pushCertificate))
.description(Optional.ofNullable(description))
.build();
}
private static void ensurePatchSetMatches(PatchSet.Id psId, ChangeUpdate update) {
Change.Id changeId = update.getId();
checkArgument(
psId.changeId().equals(changeId),
"cannot modify patch set %s on update for change %s",
psId,
changeId);
if (update.getPatchSetId() != null) {
checkArgument(
update.getPatchSetId().equals(psId),
"cannot modify patch set %s on update for %s",
psId,
update.getPatchSetId());
} else {
update.setPatchSetId(psId);
}
}
/** Check if the current patch set of the change is locked. */
public void checkPatchSetNotLocked(ChangeNotes notes) throws ResourceConflictException {
if (isPatchSetLocked(notes)) {
throw new ResourceConflictException(
String.format("The current patch set of change %s is locked", notes.getChangeId()));
}
}
/** Is the current patch set locked against state changes? */
public boolean isPatchSetLocked(ChangeNotes notes) {
Change change = notes.getChange();
if (change.isMerged()) {
return false;
}
ProjectState projectState =
projectCache.get(notes.getProjectName()).orElseThrow(illegalState(notes.getProjectName()));
ApprovalsUtil approvalsUtil = approvalsUtilProvider.get();
for (PatchSetApproval ap : approvalsUtil.byPatchSet(notes, change.currentPatchSetId())) {
Optional<LabelType> type = projectState.getLabelTypes(notes).byLabel(ap.label());
if (type.isPresent()
&& ap.value() == 1
&& type.get().getFunction() == LabelFunction.PATCH_SET_LOCK) {
return true;
}
}
return false;
}
/** Returns the commit for the given project at the given patchset revision */
public RevCommit getRevCommit(Project.NameKey project, PatchSet patchSet) throws IOException {
try (Repository repo = repoManager.openRepository(project);
RevWalk rw = new RevWalk(repo)) {
RevCommit src = rw.parseCommit(patchSet.commitId());
rw.parseBody(src);
return src;
}
}
}
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