| // 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.project; |
| |
| import com.google.common.base.Strings; |
| import com.google.gerrit.extensions.events.HeadUpdatedListener; |
| import com.google.gerrit.extensions.registration.DynamicSet; |
| import com.google.gerrit.extensions.restapi.AuthException; |
| import com.google.gerrit.extensions.restapi.BadRequestException; |
| import com.google.gerrit.extensions.restapi.DefaultInput; |
| import com.google.gerrit.extensions.restapi.ResourceNotFoundException; |
| import com.google.gerrit.extensions.restapi.RestModifyView; |
| import com.google.gerrit.extensions.restapi.UnprocessableEntityException; |
| import com.google.gerrit.server.IdentifiedUser; |
| import com.google.gerrit.server.git.GitRepositoryManager; |
| import com.google.gerrit.server.project.SetHead.Input; |
| import com.google.inject.Inject; |
| import com.google.inject.Provider; |
| import com.google.inject.Singleton; |
| |
| import org.eclipse.jgit.errors.RepositoryNotFoundException; |
| import org.eclipse.jgit.lib.Constants; |
| import org.eclipse.jgit.lib.RefUpdate; |
| import org.eclipse.jgit.lib.Repository; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.io.IOException; |
| |
| @Singleton |
| public class SetHead implements RestModifyView<ProjectResource, Input> { |
| private static final Logger log = LoggerFactory.getLogger(SetHead.class); |
| |
| static class Input { |
| @DefaultInput |
| String ref; |
| } |
| |
| private final GitRepositoryManager repoManager; |
| private final Provider<IdentifiedUser> identifiedUser; |
| private final DynamicSet<HeadUpdatedListener> headUpdatedListener; |
| |
| @Inject |
| SetHead(GitRepositoryManager repoManager, |
| Provider<IdentifiedUser> identifiedUser, |
| DynamicSet<HeadUpdatedListener> headUpdatedListener) { |
| this.repoManager = repoManager; |
| this.identifiedUser = identifiedUser; |
| this.headUpdatedListener = headUpdatedListener; |
| } |
| |
| @Override |
| public String apply(final ProjectResource rsrc, Input input) throws AuthException, |
| ResourceNotFoundException, BadRequestException, |
| UnprocessableEntityException, IOException { |
| if (!rsrc.getControl().isOwner()) { |
| throw new AuthException("restricted to project owner"); |
| } |
| if (input == null || Strings.isNullOrEmpty(input.ref)) { |
| throw new BadRequestException("ref required"); |
| } |
| String ref = input.ref; |
| if (!ref.startsWith(Constants.R_REFS)) { |
| ref = Constants.R_HEADS + ref; |
| } |
| |
| Repository repo = null; |
| try { |
| repo = repoManager.openRepository(rsrc.getNameKey()); |
| if (repo.getRef(ref) == null) { |
| throw new UnprocessableEntityException(String.format( |
| "Ref Not Found: %s", ref)); |
| } |
| |
| final String oldHead = repo.getRef(Constants.HEAD).getTarget().getName(); |
| final String newHead = ref; |
| if (!oldHead.equals(newHead)) { |
| final RefUpdate u = repo.updateRef(Constants.HEAD, true); |
| u.setRefLogIdent(identifiedUser.get().newRefLogIdent()); |
| RefUpdate.Result res = u.link(newHead); |
| switch(res) { |
| case NO_CHANGE: |
| case RENAMED: |
| case FORCED: |
| case NEW: |
| break; |
| default: |
| throw new IOException("Setting HEAD failed with " + res); |
| } |
| |
| HeadUpdatedListener.Event event = new HeadUpdatedListener.Event() { |
| @Override |
| public String getProjectName() { |
| return rsrc.getNameKey().get(); |
| } |
| |
| @Override |
| public String getOldHeadName() { |
| return oldHead; |
| } |
| |
| @Override |
| public String getNewHeadName() { |
| return newHead; |
| } |
| }; |
| for (HeadUpdatedListener l : headUpdatedListener) { |
| try { |
| l.onHeadUpdated(event); |
| } catch (RuntimeException e) { |
| log.warn("Failure in HeadUpdatedListener", e); |
| } |
| } |
| } |
| return ref; |
| } catch (RepositoryNotFoundException e) { |
| throw new ResourceNotFoundException(rsrc.getName()); |
| } finally { |
| if (repo != null) { |
| repo.close(); |
| } |
| } |
| } |
| } |