| // Copyright (C) 2014 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.change; |
| |
| import com.google.common.base.Strings; |
| import com.google.common.collect.ImmutableMap; |
| import com.google.gerrit.extensions.restapi.BadRequestException; |
| import com.google.gerrit.extensions.restapi.BinaryResult; |
| import com.google.gerrit.extensions.restapi.RestReadView; |
| import com.google.gerrit.server.config.ConfigUtil; |
| import com.google.gerrit.server.config.GerritServerConfig; |
| import com.google.gerrit.server.git.GitRepositoryManager; |
| import com.google.inject.Inject; |
| import com.google.inject.Singleton; |
| |
| import org.eclipse.jgit.api.ArchiveCommand; |
| import org.eclipse.jgit.api.errors.GitAPIException; |
| import org.eclipse.jgit.lib.Config; |
| import org.eclipse.jgit.lib.ObjectId; |
| import org.eclipse.jgit.lib.Repository; |
| import org.eclipse.jgit.revwalk.RevCommit; |
| import org.eclipse.jgit.revwalk.RevWalk; |
| import org.kohsuke.args4j.Option; |
| |
| import java.io.IOException; |
| import java.io.OutputStream; |
| import java.util.Arrays; |
| import java.util.Collection; |
| import java.util.Collections; |
| import java.util.HashMap; |
| import java.util.LinkedHashSet; |
| import java.util.Map; |
| import java.util.Set; |
| |
| public class GetArchive implements RestReadView<RevisionResource> { |
| @Singleton |
| public static class AllowedFormats { |
| final ImmutableMap<String, ArchiveFormat> extensions; |
| final Set<ArchiveFormat> allowed; |
| |
| @Inject |
| AllowedFormats(@GerritServerConfig Config cfg) { |
| Collection<ArchiveFormat> enabled; |
| String v = cfg.getString("download", null, "archive"); |
| if (v == null) { |
| enabled = Arrays.asList(ArchiveFormat.values()); |
| } else if (v.isEmpty() || "off".equalsIgnoreCase(v)) { |
| enabled = Collections.emptyList(); |
| } else { |
| enabled = ConfigUtil.getEnumList(cfg, |
| "download", null, "archive", |
| ArchiveFormat.TGZ); |
| } |
| |
| Map<String, ArchiveFormat> exts = new HashMap<>(); |
| for (ArchiveFormat format : enabled) { |
| for (String ext : format.getSuffixes()) { |
| exts.put(ext, format); |
| } |
| exts.put(format.name().toLowerCase(), format); |
| } |
| extensions = ImmutableMap.copyOf(exts); |
| allowed = Collections.unmodifiableSet(new LinkedHashSet<>(enabled)); |
| } |
| |
| public Set<ArchiveFormat> getAllowed() { |
| return allowed; |
| } |
| } |
| |
| private final GitRepositoryManager repoManager; |
| private final AllowedFormats allowedFormats; |
| |
| @Option(name = "--format") |
| private String format; |
| |
| @Inject |
| GetArchive(GitRepositoryManager repoManager, AllowedFormats allowedFormats) { |
| this.repoManager = repoManager; |
| this.allowedFormats = allowedFormats; |
| } |
| |
| @Override |
| public BinaryResult apply(RevisionResource rsrc) |
| throws BadRequestException, IOException { |
| if (Strings.isNullOrEmpty(format)) { |
| throw new BadRequestException("format is not specified"); |
| } |
| final ArchiveFormat f = allowedFormats.extensions.get("." + format); |
| if (f == null) { |
| throw new BadRequestException("unknown archive format"); |
| } |
| boolean close = true; |
| final Repository repo = repoManager |
| .openRepository(rsrc.getControl().getProject().getNameKey()); |
| try { |
| final RevWalk rw = new RevWalk(repo); |
| try { |
| final RevCommit commit = |
| rw.parseCommit(ObjectId.fromString(rsrc.getPatchSet() |
| .getRevision().get())); |
| BinaryResult bin = new BinaryResult() { |
| @Override |
| public void writeTo(OutputStream out) throws IOException { |
| try { |
| new ArchiveCommand(repo) |
| .setFormat(f.name()) |
| .setTree(commit.getTree()) |
| .setOutputStream(out).call(); |
| } catch (GitAPIException e) { |
| throw new IOException(e); |
| } |
| } |
| |
| @Override |
| public void close() throws IOException { |
| rw.close(); |
| repo.close(); |
| } |
| }; |
| |
| bin.disableGzip() |
| .setContentType(f.getMimeType()) |
| .setAttachmentName(name(f, rw, commit)); |
| |
| close = false; |
| return bin; |
| } finally { |
| if (close) { |
| rw.close(); |
| } |
| } |
| } finally { |
| if (close) { |
| repo.close(); |
| } |
| } |
| } |
| |
| private static String name(ArchiveFormat format, RevWalk rw, RevCommit commit) |
| throws IOException { |
| return String.format("%s%s", |
| rw.getObjectReader().abbreviate(commit,7).name(), |
| format.getDefaultSuffix()); |
| } |
| } |