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// 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 static com.google.common.collect.ImmutableSortedSet.toImmutableSortedSet;
import static java.util.Comparator.naturalOrder;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableSortedSet;
import com.google.common.collect.ListMultimap;
import com.google.common.collect.MultimapBuilder;
import com.google.gerrit.entities.Project;
import com.google.gerrit.extensions.api.changes.IncludedInInfo;
import com.google.gerrit.extensions.config.ExternalIncludedIn;
import com.google.gerrit.extensions.restapi.BadRequestException;
import com.google.gerrit.extensions.restapi.ResourceConflictException;
import com.google.gerrit.extensions.restapi.RestApiException;
import com.google.gerrit.server.git.GitRepositoryManager;
import com.google.gerrit.server.permissions.PermissionBackend;
import com.google.gerrit.server.permissions.PermissionBackend.RefFilterOptions;
import com.google.gerrit.server.permissions.PermissionBackendException;
import com.google.gerrit.server.plugincontext.PluginSetContext;
import com.google.inject.Inject;
import com.google.inject.Singleton;
import java.io.IOException;
import java.util.Collection;
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;
@Singleton
public class IncludedIn {
private final GitRepositoryManager repoManager;
private final PermissionBackend permissionBackend;
private final PluginSetContext<ExternalIncludedIn> externalIncludedIn;
@Inject
IncludedIn(
GitRepositoryManager repoManager,
PermissionBackend permissionBackend,
PluginSetContext<ExternalIncludedIn> externalIncludedIn) {
this.repoManager = repoManager;
this.permissionBackend = permissionBackend;
this.externalIncludedIn = externalIncludedIn;
}
public IncludedInInfo apply(Project.NameKey project, String revisionId)
throws RestApiException, IOException, PermissionBackendException {
try (Repository r = repoManager.openRepository(project);
RevWalk rw = new RevWalk(r)) {
rw.setRetainBody(false);
RevCommit rev;
try {
rev = rw.parseCommit(ObjectId.fromString(revisionId));
} catch (IncorrectObjectTypeException err) {
throw new BadRequestException(err.getMessage());
} catch (MissingObjectException err) {
throw new ResourceConflictException(err.getMessage());
}
IncludedInResolver.Result d = IncludedInResolver.resolve(r, rw, rev);
// Filter branches and tags according to their visbility by the user
ImmutableSortedSet<String> filteredBranches =
sortedShortNames(filterReadableRefs(project, d.branches()).keySet());
ImmutableSortedSet<String> filteredTags =
sortedShortNames(filterReadableRefs(project, d.tags()).keySet());
ListMultimap<String, String> external = MultimapBuilder.hashKeys().arrayListValues().build();
externalIncludedIn.runEach(
ext -> {
ListMultimap<String, String> extIncludedIns =
ext.getIncludedIn(project.get(), rev.name(), filteredBranches, filteredTags);
if (extIncludedIns != null) {
external.putAll(extIncludedIns);
}
});
return new IncludedInInfo(
filteredBranches, filteredTags, (!external.isEmpty() ? external.asMap() : null));
}
}
/**
* Filter readable branches or tags according to the caller's refs visibility.
*
* @param project specific Gerrit project.
* @param inputRefs a list of branches (in short name) as strings
*/
private Map<String, Ref> filterReadableRefs(Project.NameKey project, ImmutableList<Ref> inputRefs)
throws IOException, PermissionBackendException {
PermissionBackend.ForProject perm = permissionBackend.currentUser().project(project);
try (Repository repo = repoManager.openRepository(project)) {
return perm.filter(inputRefs, repo, RefFilterOptions.defaults());
}
}
private ImmutableSortedSet<String> sortedShortNames(Collection<String> refs) {
return refs.stream()
.map(Repository::shortenRefName)
.collect(toImmutableSortedSet(naturalOrder()));
}
}
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