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
19import android.security.KeyStore;
20
21/**
22 *  WiFi dependency injector using thread-safe lazy singleton pattern. To be used for accessing
23 *  various wifi class instances and as a handle for mock injection.
24 */
25public class WifiInjector {
26    // see: https://en.wikipedia.org/wiki/Initialization-on-demand_holder_idiom
27    private static class LazyHolder {
28        public static final WifiInjector sInstance = new WifiInjector();
29    }
30
31    public static WifiInjector getInstance() {
32        return LazyHolder.sInstance;
33    }
34
35    private final Clock mClock = new Clock();
36    private final WifiMetrics mWifiMetrics = new WifiMetrics(mClock);
37    private final WifiLastResortWatchdog mWifiLastResortWatchdog =
38            new WifiLastResortWatchdog(mWifiMetrics);
39    private final PropertyService mPropertyService = new SystemPropertyService();
40    private final BuildProperties mBuildProperties = new SystemBuildProperties();
41    private final KeyStore mKeyStore = KeyStore.getInstance();
42
43    public WifiMetrics getWifiMetrics() {
44        return mWifiMetrics;
45    }
46
47    public WifiLastResortWatchdog getWifiLastResortWatchdog() {
48        return mWifiLastResortWatchdog;
49    }
50
51    public Clock getClock() {
52        return mClock;
53    }
54
55    public PropertyService getPropertyService() {
56        return mPropertyService;
57    }
58
59    public BuildProperties getBuildProperties() { return mBuildProperties; }
60
61    public KeyStore getKeyStore() {
62        return mKeyStore;
63    }
64}
65