1 /*
2  * Copyright 2022 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package com.android.server.timezonedetector;
18 
19 import android.annotation.UserIdInt;
20 import android.app.ActivityManagerInternal;
21 
22 import com.android.server.LocalServices;
23 
24 /**
25  * An interface to access the current user identity in an easy to fake for tests way.
26  */
27 public interface CurrentUserIdentityInjector {
28 
29     /** A singleton for the real implementation of {@link CurrentUserIdentityInjector}. */
30     CurrentUserIdentityInjector REAL = new Real();
31 
32     /** A {@link ActivityManagerInternal#getCurrentUserId()} call. */
getCurrentUserId()33     @UserIdInt int getCurrentUserId();
34 
35     /** The real implementation of {@link CurrentUserIdentityInjector}. */
36     class Real implements CurrentUserIdentityInjector {
37 
Real()38         protected Real() {
39         }
40 
41         @Override
getCurrentUserId()42         public int getCurrentUserId() {
43             return LocalServices.getService(ActivityManagerInternal.class).getCurrentUserId();
44         }
45     }
46 }
47