Line data    Source code

       1             : // Copyright (C) 2016 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.account;
      16             : 
      17             : import com.google.gerrit.exceptions.StorageException;
      18             : import com.google.gerrit.index.query.PostFilterPredicate;
      19             : import com.google.gerrit.server.account.AccountState;
      20             : import com.google.gerrit.server.notedb.ChangeNotes;
      21             : import com.google.gerrit.server.permissions.ChangePermission;
      22             : import com.google.gerrit.server.permissions.PermissionBackend;
      23             : import com.google.gerrit.server.permissions.PermissionBackendException;
      24             : 
      25             : public class CanSeeChangePredicate extends PostFilterPredicate<AccountState> {
      26             :   private final PermissionBackend permissionBackend;
      27             :   private final ChangeNotes changeNotes;
      28             : 
      29             :   CanSeeChangePredicate(PermissionBackend permissionBackend, ChangeNotes changeNotes) {
      30           2 :     super(AccountQueryBuilder.FIELD_CAN_SEE, changeNotes.getChangeId().toString());
      31           2 :     this.permissionBackend = permissionBackend;
      32           2 :     this.changeNotes = changeNotes;
      33           2 :   }
      34             : 
      35             :   @Override
      36             :   public boolean match(AccountState accountState) {
      37             :     try {
      38           2 :       return permissionBackend
      39           2 :           .absentUser(accountState.account().id())
      40           2 :           .change(changeNotes)
      41           2 :           .test(ChangePermission.READ);
      42           0 :     } catch (PermissionBackendException e) {
      43           0 :       throw new StorageException("Failed to check if account can see change", e);
      44             :     }
      45             :   }
      46             : 
      47             :   @Override
      48             :   public int getCost() {
      49           2 :     return 1;
      50             :   }
      51             : }