| // Copyright (C) 2020 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.googlesource.gerrit.plugins.replication.pull.fetch; |
| |
| import com.google.gerrit.entities.Project; |
| import com.google.gerrit.extensions.restapi.IdString; |
| import com.google.gerrit.extensions.restapi.ResourceNotFoundException; |
| import com.google.gerrit.server.git.GitRepositoryManager; |
| import com.google.inject.Inject; |
| import com.googlesource.gerrit.plugins.replication.pull.LocalGitRepositoryManagerProvider; |
| import com.googlesource.gerrit.plugins.replication.pull.api.data.RevisionData; |
| import com.googlesource.gerrit.plugins.replication.pull.api.data.RevisionObjectData; |
| import com.googlesource.gerrit.plugins.replication.pull.api.exception.MissingParentObjectException; |
| import java.io.IOException; |
| import org.eclipse.jgit.errors.RepositoryNotFoundException; |
| import org.eclipse.jgit.lib.ObjectId; |
| import org.eclipse.jgit.lib.ObjectInserter; |
| import org.eclipse.jgit.lib.RefUpdate; |
| import org.eclipse.jgit.lib.Repository; |
| import org.eclipse.jgit.revwalk.RevCommit; |
| import org.eclipse.jgit.transport.RefSpec; |
| |
| public class ApplyObject { |
| |
| private final GitRepositoryManager gitManager; |
| |
| // NOTE: We do need specifically the local GitRepositoryManager to make sure |
| // to be able to write onto the directly physical repository without any wrapper. |
| // Using for instance the multi-site wrapper injected by Guice would result |
| // in a split-brain because of the misalignment of local vs. global refs values. |
| @Inject |
| public ApplyObject(LocalGitRepositoryManagerProvider gitManagerProvider) { |
| this.gitManager = gitManagerProvider.get(); |
| } |
| |
| public RefUpdateState apply(Project.NameKey name, RefSpec refSpec, RevisionData[] revisionsData) |
| throws MissingParentObjectException, IOException, ResourceNotFoundException { |
| try (Repository git = gitManager.openRepository(name)) { |
| |
| ObjectId refHead = null; |
| RefUpdate ru = git.updateRef(refSpec.getSource()); |
| try (ObjectInserter oi = git.newObjectInserter()) { |
| for (RevisionData revisionData : revisionsData) { |
| |
| ObjectId newObjectID = null; |
| RevisionObjectData commitObject = revisionData.getCommitObject(); |
| |
| if (commitObject != null) { |
| RevCommit commit = RevCommit.parse(commitObject.getContent()); |
| for (RevCommit parent : commit.getParents()) { |
| if (!git.getObjectDatabase().has(parent.getId())) { |
| throw new MissingParentObjectException(name, refSpec.getSource(), parent.getId()); |
| } |
| } |
| refHead = newObjectID = oi.insert(commitObject.getType(), commitObject.getContent()); |
| |
| RevisionObjectData treeObject = revisionData.getTreeObject(); |
| oi.insert(treeObject.getType(), treeObject.getContent()); |
| } |
| |
| for (RevisionObjectData rev : revisionData.getBlobs()) { |
| ObjectId blobObjectId = oi.insert(rev.getType(), rev.getContent()); |
| if (newObjectID == null) { |
| newObjectID = blobObjectId; |
| } |
| refHead = newObjectID; |
| } |
| |
| oi.flush(); |
| |
| if (commitObject == null) { |
| // Non-commits must be forced as they do not have a graph associated |
| ru.setForceUpdate(true); |
| } |
| } |
| |
| ru.setNewObjectId(refHead); |
| RefUpdate.Result result = ru.update(); |
| return new RefUpdateState(refSpec.getSource(), result); |
| } |
| } catch (RepositoryNotFoundException e) { |
| throw new ResourceNotFoundException(IdString.fromDecoded(name.get())); |
| } |
| } |
| } |