Line data    Source code

       1             : // Copyright (C) 2017 The Android Open Source Project
       2             : //
       3             : // Licensed under the Apache License, Version 2.0 (the "License");
       4             : // you may not use this file except in compliance with the License.
       5             : // You may obtain a copy of the License at
       6             : //
       7             : // http://www.apache.org/licenses/LICENSE-2.0
       8             : //
       9             : // Unless required by applicable law or agreed to in writing, software
      10             : // distributed under the License is distributed on an "AS IS" BASIS,
      11             : // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
      12             : // See the License for the specific language governing permissions and
      13             : // limitations under the License.
      14             : 
      15             : package com.google.gerrit.server.query.group;
      16             : 
      17             : import static com.google.common.collect.ImmutableList.toImmutableList;
      18             : 
      19             : import com.google.common.collect.ImmutableList;
      20             : import com.google.common.collect.Iterables;
      21             : import com.google.common.flogger.FluentLogger;
      22             : import com.google.gerrit.entities.Account;
      23             : import com.google.gerrit.entities.AccountGroup;
      24             : import com.google.gerrit.entities.InternalGroup;
      25             : import com.google.gerrit.index.IndexConfig;
      26             : import com.google.gerrit.index.query.InternalQuery;
      27             : import com.google.gerrit.index.query.Predicate;
      28             : import com.google.gerrit.server.index.group.GroupIndexCollection;
      29             : import com.google.inject.Inject;
      30             : import java.util.List;
      31             : import java.util.Optional;
      32             : 
      33             : /**
      34             :  * Query wrapper for the group index.
      35             :  *
      36             :  * <p>Instances are one-time-use. Other singleton classes should inject a Provider rather than
      37             :  * holding on to a single instance.
      38             :  */
      39             : public class InternalGroupQuery extends InternalQuery<InternalGroup, InternalGroupQuery> {
      40         150 :   private static final FluentLogger logger = FluentLogger.forEnclosingClass();
      41             : 
      42             :   @Inject
      43             :   InternalGroupQuery(
      44             :       GroupQueryProcessor queryProcessor, GroupIndexCollection indexes, IndexConfig indexConfig) {
      45         150 :     super(queryProcessor, indexes, indexConfig);
      46         150 :   }
      47             : 
      48             :   public Optional<InternalGroup> byName(AccountGroup.NameKey groupName) {
      49         150 :     return getOnlyGroup(GroupPredicates.name(groupName.get()), "group name '" + groupName + "'");
      50             :   }
      51             : 
      52             :   public Optional<InternalGroup> byId(AccountGroup.Id groupId) {
      53           7 :     return getOnlyGroup(GroupPredicates.id(groupId), "group id '" + groupId + "'");
      54             :   }
      55             : 
      56             :   public List<InternalGroup> byMember(Account.Id memberId) {
      57          20 :     return query(GroupPredicates.member(memberId));
      58             :   }
      59             : 
      60             :   public List<InternalGroup> bySubgroup(AccountGroup.UUID subgroupId) {
      61          18 :     return query(GroupPredicates.subgroup(subgroupId));
      62             :   }
      63             : 
      64             :   private Optional<InternalGroup> getOnlyGroup(
      65             :       Predicate<InternalGroup> predicate, String groupDescription) {
      66         150 :     List<InternalGroup> groups = query(predicate);
      67         150 :     if (groups.isEmpty()) {
      68           7 :       return Optional.empty();
      69             :     }
      70             : 
      71         150 :     if (groups.size() == 1) {
      72         150 :       return Optional.of(Iterables.getOnlyElement(groups));
      73             :     }
      74             : 
      75           0 :     ImmutableList<AccountGroup.UUID> groupUuids =
      76           0 :         groups.stream().map(InternalGroup::getGroupUUID).collect(toImmutableList());
      77           0 :     logger.atWarning().log("Ambiguous %s for groups %s.", groupDescription, groupUuids);
      78           0 :     return Optional.empty();
      79             :   }
      80             : }