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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.group;
import com.google.common.collect.ComparisonChain;
import com.google.common.collect.Lists;
import com.google.common.collect.Maps;
import com.google.common.collect.Ordering;
import com.google.gerrit.common.data.GroupDetail;
import com.google.gerrit.common.errors.NoSuchGroupException;
import com.google.gerrit.extensions.restapi.MethodNotAllowedException;
import com.google.gerrit.extensions.restapi.RestReadView;
import com.google.gerrit.reviewdb.client.Account;
import com.google.gerrit.reviewdb.client.AccountGroup;
import com.google.gerrit.reviewdb.client.AccountGroupIncludeByUuid;
import com.google.gerrit.reviewdb.client.AccountGroupMember;
import com.google.gerrit.server.account.AccountInfo;
import com.google.gerrit.server.account.GroupCache;
import com.google.gerrit.server.account.GroupDetailFactory;
import com.google.gwtorm.server.OrmException;
import com.google.inject.Inject;
import org.kohsuke.args4j.Option;
import java.util.Collections;
import java.util.Comparator;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
public class ListMembers implements RestReadView<GroupResource> {
private final GroupCache groupCache;
private final GroupDetailFactory.Factory groupDetailFactory;
private final AccountInfo.Loader accountLoader;
@Option(name = "--recursive", usage = "to resolve included groups recursively")
private boolean recursive;
@Inject
ListMembers(GroupCache groupCache,
GroupDetailFactory.Factory groupDetailFactory,
AccountInfo.Loader.Factory accountLoaderFactory) {
this.groupCache = groupCache;
this.groupDetailFactory = groupDetailFactory;
this.accountLoader = accountLoaderFactory.create(true);
}
@Override
public List<AccountInfo> apply(final GroupResource resource)
throws MethodNotAllowedException, OrmException {
if (resource.toAccountGroup() == null) {
throw new MethodNotAllowedException();
}
final Map<Account.Id, AccountInfo> members =
getMembers(resource.getGroupUUID(), new HashSet<AccountGroup.UUID>());
final List<AccountInfo> memberInfos = Lists.newArrayList(members.values());
Collections.sort(memberInfos, new Comparator<AccountInfo>() {
@Override
public int compare(AccountInfo a, AccountInfo b) {
return ComparisonChain.start()
.compare(a.name, b.name, Ordering.natural().nullsFirst())
.compare(a.email, b.email, Ordering.natural().nullsFirst())
.compare(a._account_id, b._account_id, Ordering.natural().nullsFirst()).result();
}
});
return memberInfos;
}
private Map<Account.Id, AccountInfo> getMembers(
final AccountGroup.UUID groupUUID,
final HashSet<AccountGroup.UUID> seenGroups) throws OrmException {
seenGroups.add(groupUUID);
final Map<Account.Id, AccountInfo> members = Maps.newHashMap();
final AccountGroup group = groupCache.get(groupUUID);
if (group == null) {
// the included group is an external group and can't be resolved
return Collections.emptyMap();
}
final GroupDetail groupDetail;
try {
groupDetail = groupDetailFactory.create(group.getId()).call();
} catch (NoSuchGroupException e) {
// the included group is not visible
return Collections.emptyMap();
}
if (groupDetail.members != null) {
for (final AccountGroupMember m : groupDetail.members) {
if (!members.containsKey(m.getAccountId())) {
members.put(m.getAccountId(), accountLoader.get(m.getAccountId()));
}
}
}
if (recursive) {
if (groupDetail.includes != null) {
for (final AccountGroupIncludeByUuid includedGroup : groupDetail.includes) {
if (!seenGroups.contains(includedGroup.getIncludeUUID())) {
members.putAll(getMembers(includedGroup.getIncludeUUID(), seenGroups));
}
}
}
}
accountLoader.fill();
return members;
}
}
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