| // 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.pgm.init.api; |
| |
| import com.google.gerrit.reviewdb.client.RefNames; |
| import com.google.gerrit.server.config.SitePaths; |
| import com.google.gerrit.server.git.GroupList; |
| import com.google.gerrit.server.git.ProjectConfig; |
| import com.google.gerrit.server.git.VersionedMetaData; |
| import com.google.inject.Inject; |
| |
| 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.Config; |
| import org.eclipse.jgit.lib.ObjectId; |
| import org.eclipse.jgit.lib.PersonIdent; |
| import org.eclipse.jgit.lib.RefUpdate; |
| import org.eclipse.jgit.lib.Repository; |
| import org.eclipse.jgit.lib.RepositoryCache; |
| 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; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.io.File; |
| import java.io.IOException; |
| import java.nio.file.Path; |
| |
| public class AllProjectsConfig extends VersionedMetaData { |
| |
| private static final Logger log = LoggerFactory.getLogger(AllProjectsConfig.class); |
| |
| private final String project; |
| private final SitePaths site; |
| private final InitFlags flags; |
| |
| private Config cfg; |
| private ObjectId revision; |
| private GroupList groupList; |
| |
| @Inject |
| AllProjectsConfig(AllProjectsNameOnInitProvider allProjects, SitePaths site, |
| InitFlags flags) { |
| this.project = allProjects.get(); |
| this.site = site; |
| this.flags = flags; |
| |
| } |
| |
| @Override |
| protected String getRefName() { |
| return RefNames.REFS_CONFIG; |
| } |
| |
| 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); |
| } |
| |
| public AllProjectsConfig load() throws IOException, ConfigInvalidException { |
| File path = getPath(); |
| if (path != null) { |
| try (Repository repo = new FileRepository(path)) { |
| load(repo); |
| } |
| } |
| return this; |
| } |
| |
| public Config getConfig() { |
| return cfg; |
| } |
| |
| public GroupList getGroups() { |
| return groupList; |
| } |
| |
| @Override |
| protected void onLoad() throws IOException, ConfigInvalidException { |
| groupList = readGroupList(); |
| cfg = readConfig(ProjectConfig.PROJECT_CONFIG); |
| revision = getRevision(); |
| } |
| |
| private GroupList readGroupList() throws IOException { |
| return GroupList.parse(readUTF8(GroupList.FILE_NAME), |
| GroupList.createLoggerSink(GroupList.FILE_NAME, log)); |
| } |
| |
| @Override |
| protected boolean onSave(CommitBuilder commit) throws IOException, |
| ConfigInvalidException { |
| throw new UnsupportedOperationException(); |
| } |
| |
| public void save(String message) throws IOException { |
| save(new PersonIdent("Gerrit Initialization", "init@gerrit"), message); |
| } |
| |
| public void save(String pluginName, String message) throws IOException { |
| save(new PersonIdent(pluginName, pluginName + "@gerrit"), |
| "Update from plugin " + pluginName + ": " + message); |
| } |
| |
| private void save(PersonIdent ident, String msg) throws IOException { |
| File path = getPath(); |
| if (path == null) { |
| throw new IOException("All-Projects does not exist."); |
| } |
| |
| try (Repository repo = new FileRepository(path)) { |
| inserter = repo.newObjectInserter(); |
| reader = repo.newObjectReader(); |
| try (RevWalk rw = new RevWalk(reader)) { |
| RevTree srcTree = revision != null ? rw.parseTree(revision) : null; |
| newTree = readTree(srcTree); |
| saveConfig(ProjectConfig.PROJECT_CONFIG, cfg); |
| saveGroupList(); |
| ObjectId res = newTree.writeTree(inserter); |
| if (res.equals(srcTree)) { |
| // If there are no changes to the content, don't create the commit. |
| return; |
| } |
| |
| CommitBuilder commit = new CommitBuilder(); |
| commit.setAuthor(ident); |
| commit.setCommitter(ident); |
| commit.setMessage(msg); |
| commit.setTreeId(res); |
| if (revision != null) { |
| commit.addParentId(revision); |
| } |
| ObjectId newRevision = inserter.insert(commit); |
| updateRef(repo, ident, newRevision, "commit: " + msg); |
| revision = newRevision; |
| } finally { |
| if (inserter != null) { |
| inserter.close(); |
| inserter = null; |
| } |
| if (reader != null) { |
| reader.close(); |
| reader = null; |
| } |
| } |
| } |
| |
| // we need to invalidate the JGit cache if the group list is invalidated in |
| // an unattended init step |
| RepositoryCache.clear(); |
| } |
| |
| private void saveGroupList() throws IOException { |
| saveUTF8(GroupList.FILE_NAME, groupList.asText()); |
| } |
| |
| 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; |
| default: |
| throw new IOException("Failed to update " + getRefName() + " of " |
| + project + ": " + r.name()); |
| } |
| } |
| } |