| // 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.googlesource.gerrit.plugins.gitiles; |
| |
| import com.google.common.collect.ImmutableList; |
| import com.google.common.collect.ImmutableMap; |
| import com.google.common.collect.Maps; |
| import com.google.gerrit.reviewdb.client.Project; |
| import com.google.gerrit.reviewdb.server.ReviewDb; |
| import com.google.gerrit.server.CurrentUser; |
| import com.google.gerrit.server.git.GitRepositoryManager; |
| import com.google.gerrit.server.git.TagCache; |
| import com.google.gerrit.server.git.VisibleRefFilter; |
| import com.google.gerrit.server.git.SearchingChangeCacheImpl; |
| import com.google.gerrit.server.notedb.ChangeNotes; |
| import com.google.gerrit.server.project.NoSuchProjectException; |
| import com.google.gerrit.server.project.ProjectControl; |
| import com.google.inject.Inject; |
| import com.google.inject.Provider; |
| |
| import org.eclipse.jgit.attributes.AttributesNodeProvider; |
| import org.eclipse.jgit.lib.ObjectDatabase; |
| import org.eclipse.jgit.lib.Ref; |
| import org.eclipse.jgit.lib.RefDatabase; |
| import org.eclipse.jgit.lib.RefRename; |
| import org.eclipse.jgit.lib.RefUpdate; |
| import org.eclipse.jgit.lib.ReflogReader; |
| import org.eclipse.jgit.lib.Repository; |
| import org.eclipse.jgit.lib.RepositoryBuilder; |
| import org.eclipse.jgit.lib.StoredConfig; |
| |
| import java.io.IOException; |
| import java.util.List; |
| import java.util.Map; |
| |
| class FilteredRepository extends Repository { |
| static class Factory { |
| private final Provider<ReviewDb> db; |
| private final ProjectControl.GenericFactory projectControlFactory; |
| private final Provider<CurrentUser> userProvider; |
| private final GitRepositoryManager repoManager; |
| private final TagCache tagCache; |
| private final ChangeNotes.Factory changeNotesFactory; |
| private final SearchingChangeCacheImpl changeCache; |
| |
| @Inject |
| Factory(Provider<ReviewDb> db, |
| ProjectControl.GenericFactory projectControlFactory, |
| Provider<CurrentUser> userProvider, |
| GitRepositoryManager repoManager, |
| TagCache tagCache, |
| ChangeNotes.Factory changeNotesFactory, |
| SearchingChangeCacheImpl changeCache) { |
| this.db = db; |
| this.projectControlFactory = projectControlFactory; |
| this.userProvider = userProvider; |
| this.repoManager = repoManager; |
| this.tagCache = tagCache; |
| this.changeNotesFactory = changeNotesFactory; |
| this.changeCache = changeCache; |
| } |
| |
| FilteredRepository create(Project.NameKey name) |
| throws NoSuchProjectException, IOException { |
| ProjectControl ctl = projectControlFactory.controlFor(name, userProvider.get()); |
| if (!ctl.isVisible()) { |
| throw new NoSuchProjectException(name); |
| } |
| Repository repo = repoManager.openRepository(name); |
| return new FilteredRepository(ctl, repo, |
| new VisibleRefFilter(tagCache, changeNotesFactory, changeCache, repo, |
| ctl, db.get(), true)); |
| } |
| } |
| |
| private final Repository delegate; |
| private final RefDatabase refdb; |
| |
| private FilteredRepository(ProjectControl ctl, Repository delegate, |
| VisibleRefFilter refFilter) { |
| super(toBuilder(delegate)); |
| this.delegate = delegate; |
| if (ctl.allRefsAreVisible()) { |
| this.refdb = delegate.getRefDatabase(); |
| } else { |
| this.refdb = new FilteredRefDatabase(delegate.getRefDatabase(), refFilter); |
| } |
| } |
| |
| private static RepositoryBuilder toBuilder(Repository repo) { |
| RepositoryBuilder b = new RepositoryBuilder().setGitDir(repo.getDirectory()) |
| .setFS(repo.getFS()); |
| if (!repo.isBare()) { |
| b.setWorkTree(repo.getWorkTree()).setIndexFile(repo.getIndexFile()); |
| } |
| return b; |
| } |
| |
| @Override |
| public void create(boolean bare) throws IOException { |
| throw new UnsupportedOperationException(); // Gitiles is read-only. |
| } |
| |
| @Override |
| public AttributesNodeProvider createAttributesNodeProvider() { |
| return delegate.createAttributesNodeProvider(); |
| } |
| |
| @Override |
| public ObjectDatabase getObjectDatabase() { |
| // No access control on object database; Gitiles ensures objects are only |
| // accessed if they are visible by the user according to ACLs on the refs. |
| return delegate.getObjectDatabase(); |
| } |
| |
| @Override |
| public RefDatabase getRefDatabase() { |
| return refdb; |
| } |
| |
| @Override |
| public StoredConfig getConfig() { |
| return delegate.getConfig(); |
| } |
| |
| @Override |
| public void scanForRepoChanges() throws IOException { |
| throw new UnsupportedOperationException(); // Gitiles is read-only. |
| } |
| |
| @Override |
| public void notifyIndexChanged() { |
| throw new UnsupportedOperationException(); // Gitiles is read-only. |
| } |
| |
| @Override |
| public ReflogReader getReflogReader(String refName) throws IOException { |
| return exactRef(refName) != null ? delegate.getReflogReader(refName) : null; |
| } |
| |
| @Override |
| public void close() { |
| delegate.close(); |
| } |
| |
| private static class FilteredRefDatabase extends RefDatabase { |
| private final RefDatabase delegate; |
| private final VisibleRefFilter refFilter; |
| |
| private FilteredRefDatabase(RefDatabase delegate, VisibleRefFilter refFilter) { |
| this.delegate = delegate; |
| this.refFilter = refFilter; |
| } |
| |
| @Override |
| public void create() throws IOException { |
| throw new UnsupportedOperationException(); // Gitiles is read-only. |
| } |
| |
| @Override |
| public void close() { |
| // Closed by FilteredRepository. |
| } |
| |
| @Override |
| public boolean isNameConflicting(String name) throws IOException { |
| return delegate.isNameConflicting(name); |
| } |
| |
| @Override |
| public RefUpdate newUpdate(String name, boolean detach) throws IOException { |
| throw new UnsupportedOperationException(); // Gitiles is read-only. |
| } |
| |
| @Override |
| public RefRename newRename(String fromName, String toName) |
| throws IOException { |
| throw new UnsupportedOperationException(); // Gitiles is read-only. |
| } |
| |
| @Override |
| public Ref exactRef(String name) throws IOException { |
| Ref ref = delegate.exactRef(name); |
| if (ref == null) { |
| return null; |
| } |
| return refFilter.filter(ImmutableMap.of(name, ref), true).get(name); |
| } |
| |
| @Override |
| public Ref getRef(String name) throws IOException { |
| Ref ref = delegate.getRef(name); |
| if (ref == null) { |
| return null; |
| } |
| return refFilter.filter(ImmutableMap.of(ref.getName(), ref), true).get(ref.getName()); |
| } |
| |
| @Override |
| public Map<String, Ref> getRefs(String prefix) throws IOException { |
| Map<String, Ref> refs = refFilter.filter(delegate.getRefs(prefix), true); |
| Map<String, Ref> result = Maps.newHashMapWithExpectedSize(refs.size()); |
| for (Ref ref : refs.values()) { |
| // VisibleRefFilter adds the prefix to the keys, re-strip it. |
| result.put(ref.getName().substring(prefix.length()), ref); |
| } |
| return refs; |
| } |
| |
| @Override |
| public List<Ref> getAdditionalRefs() throws IOException { |
| List<Ref> refs = delegate.getAdditionalRefs(); |
| Map<String, Ref> result = Maps.newHashMapWithExpectedSize(refs.size()); |
| for (Ref ref : refs) { |
| result.put(ref.getName(), ref); |
| } |
| return ImmutableList.copyOf(result.values()); |
| } |
| |
| @Override |
| public Ref peel(Ref ref) throws IOException { |
| return delegate.peel(ref); |
| } |
| } |
| } |