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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.restapi.group;
import com.google.common.base.Strings;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.Lists;
import com.google.common.collect.Sets;
import com.google.gerrit.common.data.GroupDescription;
import com.google.gerrit.exceptions.NoSuchGroupException;
import com.google.gerrit.extensions.common.GroupInfo;
import com.google.gerrit.extensions.restapi.AuthException;
import com.google.gerrit.extensions.restapi.DefaultInput;
import com.google.gerrit.extensions.restapi.IdString;
import com.google.gerrit.extensions.restapi.MethodNotAllowedException;
import com.google.gerrit.extensions.restapi.ResourceNotFoundException;
import com.google.gerrit.extensions.restapi.RestCollectionCreateView;
import com.google.gerrit.extensions.restapi.RestModifyView;
import com.google.gerrit.extensions.restapi.UnprocessableEntityException;
import com.google.gerrit.reviewdb.client.AccountGroup;
import com.google.gerrit.server.UserInitiated;
import com.google.gerrit.server.account.GroupControl;
import com.google.gerrit.server.group.GroupResolver;
import com.google.gerrit.server.group.GroupResource;
import com.google.gerrit.server.group.SubgroupResource;
import com.google.gerrit.server.group.db.GroupsUpdate;
import com.google.gerrit.server.group.db.InternalGroupUpdate;
import com.google.gerrit.server.permissions.PermissionBackendException;
import com.google.gerrit.server.restapi.group.AddSubgroups.Input;
import com.google.inject.Inject;
import com.google.inject.Provider;
import com.google.inject.Singleton;
import java.io.IOException;
import java.util.ArrayList;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Set;
import org.eclipse.jgit.errors.ConfigInvalidException;
@Singleton
public class AddSubgroups implements RestModifyView<GroupResource, Input> {
public static class Input {
@DefaultInput String _oneGroup;
public List<String> groups;
public static Input fromGroups(List<String> groups) {
Input in = new Input();
in.groups = groups;
return in;
}
static Input init(Input in) {
if (in == null) {
in = new Input();
}
if (in.groups == null) {
in.groups = Lists.newArrayListWithCapacity(1);
}
if (!Strings.isNullOrEmpty(in._oneGroup)) {
in.groups.add(in._oneGroup);
}
return in;
}
}
private final GroupResolver groupResolver;
private final Provider<GroupsUpdate> groupsUpdateProvider;
private final GroupJson json;
@Inject
public AddSubgroups(
GroupResolver groupResolver,
@UserInitiated Provider<GroupsUpdate> groupsUpdateProvider,
GroupJson json) {
this.groupResolver = groupResolver;
this.groupsUpdateProvider = groupsUpdateProvider;
this.json = json;
}
@Override
public List<GroupInfo> apply(GroupResource resource, Input input)
throws NotInternalGroupException, AuthException, UnprocessableEntityException,
ResourceNotFoundException, IOException, ConfigInvalidException,
PermissionBackendException {
GroupDescription.Internal group =
resource.asInternalGroup().orElseThrow(NotInternalGroupException::new);
input = Input.init(input);
GroupControl control = resource.getControl();
if (!control.canAddGroup()) {
throw new AuthException(String.format("Cannot add groups to group %s", group.getName()));
}
List<GroupInfo> result = new ArrayList<>();
Set<AccountGroup.UUID> subgroupUuids = new LinkedHashSet<>();
for (String subgroupIdentifier : input.groups) {
GroupDescription.Basic subgroup = groupResolver.parse(subgroupIdentifier);
subgroupUuids.add(subgroup.getGroupUUID());
result.add(json.format(subgroup));
}
AccountGroup.UUID groupUuid = group.getGroupUUID();
try {
addSubgroups(groupUuid, subgroupUuids);
} catch (NoSuchGroupException e) {
throw new ResourceNotFoundException(String.format("Group %s not found", groupUuid));
}
return result;
}
private void addSubgroups(
AccountGroup.UUID parentGroupUuid, Set<AccountGroup.UUID> newSubgroupUuids)
throws NoSuchGroupException, IOException, ConfigInvalidException {
InternalGroupUpdate groupUpdate =
InternalGroupUpdate.builder()
.setSubgroupModification(subgroupUuids -> Sets.union(subgroupUuids, newSubgroupUuids))
.build();
groupsUpdateProvider.get().updateGroup(parentGroupUuid, groupUpdate);
}
@Singleton
public static class CreateSubgroup
implements RestCollectionCreateView<GroupResource, SubgroupResource, Input> {
private final AddSubgroups addSubgroups;
@Inject
public CreateSubgroup(AddSubgroups addSubgroups) {
this.addSubgroups = addSubgroups;
}
@Override
public GroupInfo apply(GroupResource resource, IdString id, Input input)
throws AuthException, MethodNotAllowedException, ResourceNotFoundException, IOException,
ConfigInvalidException, PermissionBackendException {
AddSubgroups.Input in = new AddSubgroups.Input();
in.groups = ImmutableList.of(id.get());
try {
List<GroupInfo> list = addSubgroups.apply(resource, in);
if (list.size() == 1) {
return list.get(0);
}
throw new IllegalStateException();
} catch (UnprocessableEntityException e) {
throw new ResourceNotFoundException(id);
}
}
}
@Singleton
public static class UpdateSubgroup implements RestModifyView<SubgroupResource, Input> {
private final Provider<GetSubgroup> get;
@Inject
public UpdateSubgroup(Provider<GetSubgroup> get) {
this.get = get;
}
@Override
public GroupInfo apply(SubgroupResource resource, Input input)
throws PermissionBackendException {
// Do nothing, the group is already included.
return get.get().apply(resource);
}
}
}