Keun-young Park | d462a91 | 2019-02-11 08:53:42 -0800 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (C) 2019 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; |
| 18 | |
| 19 | import android.util.ArrayMap; |
| 20 | |
| 21 | import com.android.internal.annotations.VisibleForTesting; |
| 22 | |
| 23 | /** |
| 24 | * Copy of frameworks/base/core/java/com/android/server/LocalServices.java |
| 25 | * This is for accessing other car service components. |
| 26 | */ |
| 27 | public class CarLocalServices { |
| 28 | private CarLocalServices() {} |
| 29 | |
| 30 | private static final ArrayMap<Class<?>, Object> sLocalServiceObjects = |
| 31 | new ArrayMap<Class<?>, Object>(); |
| 32 | |
| 33 | /** |
| 34 | * Returns a local service instance that implements the specified interface. |
| 35 | * |
| 36 | * @param type The type of service. |
| 37 | * @return The service object. |
| 38 | */ |
| 39 | @SuppressWarnings("unchecked") |
| 40 | public static <T> T getService(Class<T> type) { |
| 41 | synchronized (sLocalServiceObjects) { |
| 42 | return (T) sLocalServiceObjects.get(type); |
| 43 | } |
| 44 | } |
| 45 | |
| 46 | /** |
| 47 | * Adds a service instance of the specified interface to the global registry of local services. |
| 48 | */ |
| 49 | public static <T> void addService(Class<T> type, T service) { |
| 50 | synchronized (sLocalServiceObjects) { |
| 51 | if (sLocalServiceObjects.containsKey(type)) { |
| 52 | throw new IllegalStateException("Overriding service registration"); |
| 53 | } |
| 54 | sLocalServiceObjects.put(type, service); |
| 55 | } |
| 56 | } |
| 57 | |
| 58 | /** |
| 59 | * Remove a service instance, must be only used in tests. |
| 60 | */ |
| 61 | @VisibleForTesting |
| 62 | public static <T> void removeServiceForTest(Class<T> type) { |
| 63 | synchronized (sLocalServiceObjects) { |
| 64 | sLocalServiceObjects.remove(type); |
| 65 | } |
| 66 | } |
| 67 | |
| 68 | /** |
| 69 | * Remove all registered services. Should be called when car service restarts. |
| 70 | */ |
| 71 | public static void removeAllServices() { |
| 72 | synchronized (sLocalServiceObjects) { |
| 73 | sLocalServiceObjects.clear(); |
| 74 | } |
| 75 | } |
| 76 | } |