| // Copyright (C) 2023 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.git; |
| |
| import java.io.File; |
| import java.io.IOException; |
| import java.util.function.BiFunction; |
| import org.eclipse.jgit.errors.RepositoryNotFoundException; |
| import org.eclipse.jgit.internal.storage.file.FileRepository; |
| import org.eclipse.jgit.lib.RefDatabase; |
| import org.eclipse.jgit.lib.Repository; |
| import org.eclipse.jgit.lib.RepositoryCache; |
| import org.eclipse.jgit.util.FS; |
| |
| /** A FileRepository with a dynamic RefDatabase supplied via a BiFunction. */ |
| public class DynamicRefDbRepository extends FileRepository { |
| public static class FileKey extends RepositoryCache.FileKey { |
| private BiFunction<File, RefDatabase, RefDatabase> refDatabaseSupplier; |
| |
| public static FileKey lenient( |
| File directory, FS fs, BiFunction<File, RefDatabase, RefDatabase> refDatabaseSupplier) { |
| final File gitdir = resolve(directory, fs); |
| return new FileKey(gitdir != null ? gitdir : directory, fs, refDatabaseSupplier); |
| } |
| |
| private final FS fs; |
| |
| /** |
| * @param directory exact location of the repository. |
| * @param fs the file system abstraction which will be necessary to perform certain file system |
| * operations. |
| */ |
| public FileKey( |
| File directory, FS fs, BiFunction<File, RefDatabase, RefDatabase> refDatabaseSupplier) { |
| super(canonical(directory), fs); |
| this.fs = fs; |
| this.refDatabaseSupplier = refDatabaseSupplier; |
| } |
| |
| @Override |
| public Repository open(boolean mustExist) throws IOException { |
| if (mustExist && !isGitRepository(getFile(), fs)) |
| throw new RepositoryNotFoundException(getFile()); |
| return new DynamicRefDbRepository(getFile(), refDatabaseSupplier); |
| } |
| |
| private static File canonical(File path) { |
| try { |
| return path.getCanonicalFile(); |
| } catch (IOException e) { |
| return path.getAbsoluteFile(); |
| } |
| } |
| } |
| |
| private final File path; |
| private final BiFunction<File, RefDatabase, RefDatabase> refDatabaseSupplier; |
| |
| public DynamicRefDbRepository( |
| File path, BiFunction<File, RefDatabase, RefDatabase> refDatabaseSupplier) |
| throws IOException { |
| super(path); |
| this.path = path; |
| this.refDatabaseSupplier = refDatabaseSupplier; |
| } |
| |
| @Override |
| public RefDatabase getRefDatabase() { |
| return refDatabaseSupplier.apply(path, super.getRefDatabase()); |
| } |
| } |