WifiInjector.java revision 637a86ffb3a036a4f26a471378b57d8817f35c25 
1/*
2 * Copyright (C) 2016 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
17package com.android.server.wifi;
18
19/**
20 *  WiFi dependency injector using thread-safe lazy singleton pattern. To be used for accessing
21 *  various wifi class instances and as a handle for mock injection.
22 */
23public class WifiInjector {
24    // see: https://en.wikipedia.org/wiki/Initialization-on-demand_holder_idiom
25    private static class LazyHolder {
26        public static final WifiInjector sInstance = new WifiInjector();
27    }
28
29    public static WifiInjector getInstance() {
30        return LazyHolder.sInstance;
31    }
32
33    private final WifiMetrics mWifiMetrics = new WifiMetrics();
34
35    public WifiMetrics getWifiMetrics() {
36        return mWifiMetrics;
37    }
38}
39