68 lines
2.1 KiB
Java
68 lines
2.1 KiB
Java
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/*
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* Copyright (C) 2023 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package android.provider;
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import android.annotation.NonNull;
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import android.annotation.Nullable;
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import android.annotation.SystemApi;
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import java.util.Objects;
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/**
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* Class that will hold an instance of {@link DeviceConfigServiceManager}
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* which is used by {@link DeviceConfig} to retrieve an instance of the service.
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*
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* @hide
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*/
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@SystemApi(client = SystemApi.Client.MODULE_LIBRARIES)
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public class DeviceConfigInitializer {
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private static DeviceConfigServiceManager sDeviceConfigServiceManager;
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private static final Object sLock = new Object();
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private DeviceConfigInitializer() {
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// fully static class
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}
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/**
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* Setter for {@link DeviceConfigServiceManager}. Should be called only once.
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*
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*/
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public static void setDeviceConfigServiceManager(
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@NonNull DeviceConfigServiceManager serviceManager) {
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synchronized (sLock) {
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if (sDeviceConfigServiceManager != null) {
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throw new IllegalStateException("setDeviceConfigServiceManager called twice!");
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}
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Objects.requireNonNull(serviceManager, "serviceManager must not be null");
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sDeviceConfigServiceManager = serviceManager;
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}
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}
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/**
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* Getter for {@link DeviceConfigServiceManager}.
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*
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*/
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@Nullable
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public static DeviceConfigServiceManager getDeviceConfigServiceManager() {
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synchronized (sLock) {
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return sDeviceConfigServiceManager;
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}
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}
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}
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