| // 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.server.change; |
| |
| import com.google.gerrit.extensions.restapi.BinaryResult; |
| import com.google.gerrit.extensions.restapi.ResourceNotFoundException; |
| import com.google.gerrit.extensions.restapi.RestReadView; |
| import com.google.gerrit.reviewdb.client.Project; |
| import com.google.gerrit.server.git.GitRepositoryManager; |
| import com.google.inject.Inject; |
| import com.google.inject.Singleton; |
| |
| import org.eclipse.jgit.lib.ObjectLoader; |
| import org.eclipse.jgit.lib.Repository; |
| import org.eclipse.jgit.revwalk.RevCommit; |
| import org.eclipse.jgit.revwalk.RevWalk; |
| import org.eclipse.jgit.treewalk.TreeWalk; |
| |
| import java.io.IOException; |
| import java.io.OutputStream; |
| |
| @Singleton |
| public class GetContent implements RestReadView<FileResource> { |
| private final GitRepositoryManager repoManager; |
| |
| @Inject |
| GetContent(GitRepositoryManager repoManager) { |
| this.repoManager = repoManager; |
| } |
| |
| @Override |
| public BinaryResult apply(FileResource rsrc) |
| throws ResourceNotFoundException, IOException { |
| return apply(rsrc.getRevision().getControl().getProject().getNameKey(), |
| rsrc.getRevision().getPatchSet().getRevision().get(), |
| rsrc.getPatchKey().get()); |
| } |
| |
| public BinaryResult apply(Project.NameKey project, String revstr, String path) |
| throws ResourceNotFoundException, IOException { |
| Repository repo = repoManager.openRepository(project); |
| try { |
| RevWalk rw = new RevWalk(repo); |
| try { |
| RevCommit commit = |
| rw.parseCommit(repo.resolve(revstr)); |
| TreeWalk tw = |
| TreeWalk.forPath(rw.getObjectReader(), path, |
| commit.getTree().getId()); |
| if (tw == null) { |
| throw new ResourceNotFoundException(); |
| } |
| try { |
| final ObjectLoader object = repo.open(tw.getObjectId(0)); |
| @SuppressWarnings("resource") |
| BinaryResult result = new BinaryResult() { |
| @Override |
| public void writeTo(OutputStream os) throws IOException { |
| object.copyTo(os); |
| } |
| }; |
| return result.setContentLength(object.getSize()).base64(); |
| } finally { |
| tw.close(); |
| } |
| } finally { |
| rw.close(); |
| } |
| } finally { |
| repo.close(); |
| } |
| } |
| } |