| // 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.restapi.change; |
| |
| import static java.util.stream.Collectors.joining; |
| |
| import com.google.gerrit.extensions.common.Input; |
| import com.google.gerrit.extensions.restapi.BinaryResult; |
| import com.google.gerrit.extensions.restapi.IdString; |
| import com.google.gerrit.extensions.restapi.ResourceConflictException; |
| import com.google.gerrit.extensions.restapi.ResourceNotFoundException; |
| import com.google.gerrit.extensions.restapi.RestModifyView; |
| import com.google.gerrit.reviewdb.server.ReviewDb; |
| import com.google.gerrit.reviewdb.server.ReviewDbUtil; |
| import com.google.gerrit.server.CommentsUtil; |
| import com.google.gerrit.server.change.ChangeResource; |
| import com.google.gerrit.server.notedb.ChangeBundle; |
| import com.google.gerrit.server.notedb.ChangeBundleReader; |
| import com.google.gerrit.server.notedb.ChangeNotes; |
| import com.google.gerrit.server.notedb.NotesMigration; |
| import com.google.gerrit.server.notedb.rebuild.ChangeRebuilder; |
| import com.google.gerrit.server.project.NoSuchChangeException; |
| import com.google.gwtorm.server.OrmException; |
| import com.google.inject.Inject; |
| import com.google.inject.Provider; |
| import com.google.inject.Singleton; |
| import java.io.IOException; |
| import java.util.List; |
| import org.eclipse.jgit.errors.ConfigInvalidException; |
| |
| @Singleton |
| public class Rebuild implements RestModifyView<ChangeResource, Input> { |
| |
| private final Provider<ReviewDb> db; |
| private final NotesMigration migration; |
| private final ChangeRebuilder rebuilder; |
| private final ChangeBundleReader bundleReader; |
| private final CommentsUtil commentsUtil; |
| private final ChangeNotes.Factory notesFactory; |
| |
| @Inject |
| Rebuild( |
| Provider<ReviewDb> db, |
| NotesMigration migration, |
| ChangeRebuilder rebuilder, |
| ChangeBundleReader bundleReader, |
| CommentsUtil commentsUtil, |
| ChangeNotes.Factory notesFactory) { |
| this.db = db; |
| this.migration = migration; |
| this.rebuilder = rebuilder; |
| this.bundleReader = bundleReader; |
| this.commentsUtil = commentsUtil; |
| this.notesFactory = notesFactory; |
| } |
| |
| @Override |
| public BinaryResult apply(ChangeResource rsrc, Input input) |
| throws ResourceNotFoundException, IOException, OrmException, ConfigInvalidException, |
| ResourceConflictException { |
| if (!migration.commitChangeWrites()) { |
| throw new ResourceNotFoundException(); |
| } |
| if (!migration.readChanges()) { |
| // ChangeBundle#fromNotes currently doesn't work if reading isn't enabled, |
| // so don't attempt a diff. |
| rebuild(rsrc); |
| return BinaryResult.create("Rebuilt change successfully"); |
| } |
| |
| // Not the same transaction as the rebuild, so may result in spurious diffs |
| // in the case of races. This should be easy enough to detect by rerunning. |
| ChangeBundle reviewDbBundle = |
| bundleReader.fromReviewDb(ReviewDbUtil.unwrapDb(db.get()), rsrc.getId()); |
| if (reviewDbBundle == null) { |
| throw new ResourceConflictException("change is missing in ReviewDb"); |
| } |
| rebuild(rsrc); |
| ChangeNotes notes = notesFactory.create(db.get(), rsrc.getChange().getProject(), rsrc.getId()); |
| ChangeBundle noteDbBundle = ChangeBundle.fromNotes(commentsUtil, notes); |
| List<String> diffs = reviewDbBundle.differencesFrom(noteDbBundle); |
| if (diffs.isEmpty()) { |
| return BinaryResult.create("No differences between ReviewDb and NoteDb"); |
| } |
| return BinaryResult.create( |
| diffs.stream().collect(joining("\n", "Differences between ReviewDb and NoteDb:\n", "\n"))); |
| } |
| |
| private void rebuild(ChangeResource rsrc) |
| throws ResourceNotFoundException, OrmException, IOException { |
| try { |
| rebuilder.rebuild(db.get(), rsrc.getId()); |
| } catch (NoSuchChangeException e) { |
| throw new ResourceNotFoundException(IdString.fromDecoded(rsrc.getId().toString()), e); |
| } |
| } |
| } |