1 /*
2  * Copyright (C) 2021 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.car.internal.os;
18 
19 import android.annotation.Nullable;
20 import android.os.SystemProperties;
21 
22 import java.util.Optional;
23 
24 /**
25  * Replacement for {@code android.sysprop.CarProperties}. This should be manually updated.
26  *
27  * @hide
28  */
29 public final class CarSystemProperties {
30     private static final String PROP_BOOT_USER_OVERRIDE_ID =
31             "android.car.systemuser.bootuseroverrideid";
32     private static final String PROP_USER_HAL_ENABLED = "android.car.user_hal_enabled";
33     private static final String PROP_USER_HAL_TIMEOUT = "android.car.user_hal_timeout";
34     private static final String PROP_DEVICE_POLICY_MANAGER_TIMEOUT =
35             "android.car.device_policy_manager_timeout";
36 
CarSystemProperties()37     private CarSystemProperties() {
38         throw new UnsupportedOperationException();
39     }
40 
41     /** Check {@code system/libsysprop/srcs/android/sysprop/CarProperties.sysprop} */
getBootUserOverrideId()42     public static Optional<Integer> getBootUserOverrideId() {
43         return Optional.ofNullable(tryParseInteger(SystemProperties.get(
44                 PROP_BOOT_USER_OVERRIDE_ID)));
45     }
46 
47     /** Check {@code system/libsysprop/srcs/android/sysprop/CarProperties.sysprop} */
getUserHalEnabled()48     public static Optional<Boolean> getUserHalEnabled() {
49         return Optional.ofNullable(Boolean.valueOf(SystemProperties.get(PROP_USER_HAL_ENABLED)));
50     }
51 
52     /** Check {@code system/libsysprop/srcs/android/sysprop/CarProperties.sysprop} */
getUserHalTimeout()53     public static Optional<Integer> getUserHalTimeout() {
54         return Optional.ofNullable(tryParseInteger(SystemProperties.get(PROP_USER_HAL_TIMEOUT)));
55     }
56 
57     /** Check {@code system/libsysprop/srcs/android/sysprop/CarProperties.sysprop} */
getDevicePolicyManagerTimeout()58     public static Optional<Integer> getDevicePolicyManagerTimeout() {
59         return Optional.ofNullable(tryParseInteger(SystemProperties.get(
60                 PROP_DEVICE_POLICY_MANAGER_TIMEOUT)));
61     }
62 
63     @Nullable
tryParseInteger(String str)64     private static Integer tryParseInteger(String str) {
65         try {
66             return Integer.valueOf(str);
67         } catch (NumberFormatException e) {
68             return null;
69         }
70     }
71 }
72