| // Copyright (C) 2015 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.deleteproject.fs; |
| |
| import com.google.common.annotations.VisibleForTesting; |
| import com.google.common.collect.Sets; |
| import com.google.gerrit.extensions.events.LifecycleListener; |
| import com.google.gerrit.server.config.GerritServerConfig; |
| import com.google.gerrit.server.config.RepositoryConfig; |
| import com.google.gerrit.server.config.SitePaths; |
| import com.google.inject.Inject; |
| import java.io.IOException; |
| import java.nio.file.FileVisitResult; |
| import java.nio.file.Files; |
| import java.nio.file.Path; |
| import java.nio.file.SimpleFileVisitor; |
| import java.nio.file.attribute.BasicFileAttributes; |
| import java.util.Set; |
| import java.util.regex.Pattern; |
| import org.eclipse.jgit.lib.Config; |
| import org.eclipse.jgit.lib.RepositoryCache.FileKey; |
| import org.eclipse.jgit.util.FS; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| public class DeleteTrashFolders implements LifecycleListener { |
| private static final Logger log = LoggerFactory.getLogger(DeleteTrashFolders.class); |
| |
| /** |
| * Search for name which ends with a dot, 13 digits and the string ".deleted". A folder 'f' is |
| * renamed to 'f.<currentTimeMillis>.deleted'. <currentTimeMillis> happens to be exactly 13 digits |
| * for commits created between 2002 (before git was born) and 2285. |
| */ |
| private static final Pattern TRASH_1 = Pattern.compile(".*\\.\\d{13}.deleted"); |
| |
| /** |
| * New trash folder name format. It adds % chars around the "deleted" string and keeps the ".git" |
| * extension. |
| */ |
| private static final Pattern TRASH_2 = Pattern.compile(".*\\.\\d{13}.%deleted%.git"); |
| |
| @VisibleForTesting |
| static final boolean isTrashFolderName(String fName) { |
| return TRASH_1.matcher(fName).matches() || TRASH_2.matcher(fName).matches(); |
| } |
| |
| private Set<Path> repoFolders; |
| |
| @Inject |
| public DeleteTrashFolders( |
| SitePaths site, @GerritServerConfig Config cfg, RepositoryConfig repositoryCfg) { |
| repoFolders = Sets.newHashSet(); |
| repoFolders.add(site.resolve(cfg.getString("gerrit", null, "basePath"))); |
| repoFolders.addAll(repositoryCfg.getAllBasePaths()); |
| } |
| |
| class TrashFolderRemover extends SimpleFileVisitor<Path> { |
| |
| @Override |
| public FileVisitResult preVisitDirectory(Path dir, BasicFileAttributes attrs) |
| throws IOException { |
| String fName = dir.getFileName().toString(); |
| if (isTrashFolderName(fName)) { |
| log.warn("Will delete this folder: {}", dir); |
| recursiveDelete(dir); |
| return FileVisitResult.SKIP_SUBTREE; |
| } else if (FileKey.isGitRepository(dir.toFile(), FS.DETECTED)) { |
| // We are in a GITDIR and don't expect trash folders inside GITDIR's. |
| return FileVisitResult.SKIP_SUBTREE; |
| } |
| |
| return super.preVisitDirectory(dir, attrs); |
| } |
| |
| /** |
| * Recursively delete the specified file and all of its contents. |
| * |
| * @throws IOException |
| */ |
| private void recursiveDelete(Path file) throws IOException { |
| Files.walkFileTree( |
| file, |
| new SimpleFileVisitor<Path>() { |
| @Override |
| public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) |
| throws IOException { |
| Files.delete(file); |
| return FileVisitResult.CONTINUE; |
| } |
| |
| @Override |
| public FileVisitResult postVisitDirectory(Path dir, IOException e) throws IOException { |
| if (e != null) { |
| throw e; |
| } |
| Files.delete(dir); |
| return FileVisitResult.CONTINUE; |
| } |
| }); |
| } |
| } |
| |
| @Override |
| public void start() { |
| new Thread( |
| () -> { |
| for (Path folder : repoFolders) { |
| if (!folder.toFile().exists()) { |
| log.debug("Base path {} does not exist", folder); |
| continue; |
| } |
| try { |
| Files.walkFileTree(folder, new TrashFolderRemover()); |
| } catch (IOException e) { |
| log.warn("Exception while trying to delete trash folders", e); |
| } |
| } |
| }, |
| "DeleteTrashFolders") |
| .start(); |
| } |
| |
| @Override |
| public void stop() {} |
| } |