| // 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.pgm.init.api; |
| |
| import com.google.gerrit.entities.Project; |
| import com.google.gerrit.server.GerritPersonIdentProvider; |
| import com.google.gerrit.server.config.SitePaths; |
| import com.google.gerrit.server.git.meta.VersionedMetaData; |
| import java.io.File; |
| import java.io.IOException; |
| import java.nio.file.Path; |
| import org.eclipse.jgit.errors.ConfigInvalidException; |
| import org.eclipse.jgit.internal.storage.file.FileRepository; |
| import org.eclipse.jgit.lib.CommitBuilder; |
| import org.eclipse.jgit.lib.ObjectId; |
| import org.eclipse.jgit.lib.ObjectInserter; |
| import org.eclipse.jgit.lib.ObjectReader; |
| import org.eclipse.jgit.lib.PersonIdent; |
| import org.eclipse.jgit.lib.RefUpdate; |
| import org.eclipse.jgit.lib.Repository; |
| import org.eclipse.jgit.lib.RepositoryCache.FileKey; |
| import org.eclipse.jgit.revwalk.RevTree; |
| import org.eclipse.jgit.revwalk.RevWalk; |
| import org.eclipse.jgit.util.FS; |
| |
| public abstract class VersionedMetaDataOnInit extends VersionedMetaData { |
| |
| protected final String project; |
| private final InitFlags flags; |
| private final SitePaths site; |
| private final String ref; |
| |
| protected VersionedMetaDataOnInit(InitFlags flags, SitePaths site, String project, String ref) { |
| this.flags = flags; |
| this.site = site; |
| this.project = project; |
| this.ref = ref; |
| } |
| |
| @Override |
| protected String getRefName() { |
| return ref; |
| } |
| |
| public VersionedMetaDataOnInit load() throws IOException, ConfigInvalidException { |
| File path = getPath(); |
| if (path != null) { |
| try (Repository repo = new FileRepository(path)) { |
| load(Project.nameKey(project), repo); |
| } |
| } |
| return this; |
| } |
| |
| public void save(String message) throws IOException, ConfigInvalidException { |
| save(new GerritPersonIdentProvider(flags.cfg).get(), message); |
| } |
| |
| protected void save(PersonIdent ident, String msg) throws IOException, ConfigInvalidException { |
| File path = getPath(); |
| if (path == null) { |
| throw new IOException(project + " does not exist."); |
| } |
| |
| try (Repository repo = new FileRepository(path); |
| ObjectInserter i = repo.newObjectInserter(); |
| ObjectReader r = repo.newObjectReader(); |
| RevWalk rw = new RevWalk(r)) { |
| inserter = i; |
| reader = r; |
| |
| RevTree srcTree = revision != null ? rw.parseTree(revision) : null; |
| newTree = readTree(srcTree); |
| |
| CommitBuilder commit = new CommitBuilder(); |
| commit.setAuthor(ident); |
| commit.setCommitter(ident); |
| commit.setMessage(msg); |
| |
| onSave(commit); |
| |
| ObjectId res = newTree.writeTree(inserter); |
| if (res.equals(srcTree)) { |
| return; |
| } |
| commit.setTreeId(res); |
| |
| if (revision != null) { |
| commit.addParentId(revision); |
| } |
| ObjectId newRevision = inserter.insert(commit); |
| updateRef(repo, ident, newRevision, "commit: " + msg); |
| revision = rw.parseCommit(newRevision); |
| } finally { |
| inserter = null; |
| reader = null; |
| } |
| } |
| |
| private void updateRef(Repository repo, PersonIdent ident, ObjectId newRevision, String refLogMsg) |
| throws IOException { |
| RefUpdate ru = repo.updateRef(getRefName()); |
| ru.setRefLogIdent(ident); |
| ru.setNewObjectId(newRevision); |
| ru.setExpectedOldObjectId(revision); |
| ru.setRefLogMessage(refLogMsg, false); |
| RefUpdate.Result r = ru.update(); |
| switch (r) { |
| case FAST_FORWARD: |
| case NEW: |
| case NO_CHANGE: |
| break; |
| case FORCED: |
| case IO_FAILURE: |
| case LOCK_FAILURE: |
| case NOT_ATTEMPTED: |
| case REJECTED: |
| case REJECTED_CURRENT_BRANCH: |
| case RENAMED: |
| case REJECTED_MISSING_OBJECT: |
| case REJECTED_OTHER_REASON: |
| default: |
| throw new IOException( |
| "Failed to update " + getRefName() + " of " + project + ": " + r.name()); |
| } |
| } |
| |
| private File getPath() { |
| Path basePath = site.resolve(flags.cfg.getString("gerrit", null, "basePath")); |
| if (basePath == null) { |
| throw new IllegalStateException("gerrit.basePath must be configured"); |
| } |
| return FileKey.resolve(basePath.resolve(project).toFile(), FS.DETECTED); |
| } |
| } |