| // 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.project; |
| |
| import com.google.gerrit.extensions.registration.DynamicMap; |
| import com.google.gerrit.extensions.restapi.ChildCollection; |
| import com.google.gerrit.extensions.restapi.IdString; |
| import com.google.gerrit.extensions.restapi.ResourceNotFoundException; |
| import com.google.gerrit.extensions.restapi.RestView; |
| import com.google.gerrit.reviewdb.client.Project; |
| import com.google.gerrit.server.change.IncludedInResolver; |
| import com.google.gerrit.server.git.GitRepositoryManager; |
| import com.google.gerrit.server.git.VisibleRefFilter; |
| import com.google.gerrit.server.query.change.ChangeData; |
| import com.google.gerrit.server.query.change.InternalChangeQuery; |
| import com.google.gwtorm.server.OrmException; |
| import com.google.inject.Inject; |
| import com.google.inject.Provider; |
| import com.google.inject.Singleton; |
| import java.io.IOException; |
| import java.util.List; |
| import java.util.Map; |
| import org.eclipse.jgit.errors.IncorrectObjectTypeException; |
| import org.eclipse.jgit.errors.MissingObjectException; |
| import org.eclipse.jgit.lib.ObjectId; |
| import org.eclipse.jgit.lib.Ref; |
| import org.eclipse.jgit.lib.Repository; |
| import org.eclipse.jgit.revwalk.RevCommit; |
| import org.eclipse.jgit.revwalk.RevWalk; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| @Singleton |
| public class CommitsCollection implements ChildCollection<ProjectResource, CommitResource> { |
| private static final Logger log = LoggerFactory.getLogger(CommitsCollection.class); |
| |
| private final DynamicMap<RestView<CommitResource>> views; |
| private final GitRepositoryManager repoManager; |
| private final VisibleRefFilter.Factory refFilter; |
| private final Provider<InternalChangeQuery> queryProvider; |
| |
| @Inject |
| public CommitsCollection( |
| DynamicMap<RestView<CommitResource>> views, |
| GitRepositoryManager repoManager, |
| VisibleRefFilter.Factory refFilter, |
| Provider<InternalChangeQuery> queryProvider) { |
| this.views = views; |
| this.repoManager = repoManager; |
| this.refFilter = refFilter; |
| this.queryProvider = queryProvider; |
| } |
| |
| @Override |
| public RestView<ProjectResource> list() throws ResourceNotFoundException { |
| throw new ResourceNotFoundException(); |
| } |
| |
| @Override |
| public CommitResource parse(ProjectResource parent, IdString id) |
| throws ResourceNotFoundException, IOException { |
| ObjectId objectId; |
| try { |
| objectId = ObjectId.fromString(id.get()); |
| } catch (IllegalArgumentException e) { |
| throw new ResourceNotFoundException(id); |
| } |
| |
| try (Repository repo = repoManager.openRepository(parent.getNameKey()); |
| RevWalk rw = new RevWalk(repo)) { |
| RevCommit commit = rw.parseCommit(objectId); |
| rw.parseBody(commit); |
| if (!canRead(parent.getProjectState(), repo, commit)) { |
| throw new ResourceNotFoundException(id); |
| } |
| for (int i = 0; i < commit.getParentCount(); i++) { |
| rw.parseBody(rw.parseCommit(commit.getParent(i))); |
| } |
| return new CommitResource(parent, commit); |
| } catch (MissingObjectException | IncorrectObjectTypeException e) { |
| throw new ResourceNotFoundException(id); |
| } |
| } |
| |
| @Override |
| public DynamicMap<RestView<CommitResource>> views() { |
| return views; |
| } |
| |
| /** @return true if {@code commit} is visible to the caller. */ |
| public boolean canRead(ProjectState state, Repository repo, RevCommit commit) { |
| Project.NameKey project = state.getNameKey(); |
| |
| // Look for changes associated with the commit. |
| try { |
| List<ChangeData> changes = |
| queryProvider.get().enforceVisibility(true).byProjectCommit(project, commit); |
| if (!changes.isEmpty()) { |
| return true; |
| } |
| } catch (OrmException e) { |
| log.error("Cannot look up change for commit " + commit.name() + " in " + project, e); |
| } |
| |
| return isReachableFrom(state, repo, commit, repo.getAllRefs()); |
| } |
| |
| public boolean isReachableFrom( |
| ProjectState state, Repository repo, RevCommit commit, Map<String, Ref> refs) { |
| try (RevWalk rw = new RevWalk(repo)) { |
| refs = refFilter.create(state, repo).filter(refs, true); |
| return IncludedInResolver.includedInAny(repo, rw, commit, refs.values()); |
| } catch (IOException e) { |
| log.error( |
| String.format( |
| "Cannot verify permissions to commit object %s in repository %s", |
| commit.name(), state.getNameKey()), |
| e); |
| return false; |
| } |
| } |
| } |