1 /* 2 * Copyright (C) 2017 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.settings.fuelgauge.anomaly; 18 19 import android.content.Context; 20 import android.net.Uri; 21 import android.provider.Settings; 22 import android.support.annotation.VisibleForTesting; 23 import android.text.format.DateUtils; 24 import android.util.KeyValueListParser; 25 import android.util.Log; 26 27 import java.util.Arrays; 28 import java.util.Set; 29 import java.util.stream.Collectors; 30 31 /** 32 * Class to store the policy for anomaly detection, which comes from 33 * {@link android.provider.Settings.Global} 34 */ 35 public class AnomalyDetectionPolicy { 36 public static final String TAG = "AnomalyDetectionPolicy"; 37 38 @VisibleForTesting 39 static final String KEY_ANOMALY_DETECTION_ENABLED = "anomaly_detection_enabled"; 40 @VisibleForTesting 41 static final String KEY_WAKELOCK_DETECTION_ENABLED = "wakelock_enabled"; 42 @VisibleForTesting 43 static final String KEY_WAKEUP_ALARM_DETECTION_ENABLED = "wakeup_alarm_enabled"; 44 @VisibleForTesting 45 static final String KEY_BLUETOOTH_SCAN_DETECTION_ENABLED = "bluetooth_scan_enabled"; 46 @VisibleForTesting 47 static final String KEY_WAKELOCK_THRESHOLD = "wakelock_threshold"; 48 @VisibleForTesting 49 static final String KEY_WAKEUP_ALARM_THRESHOLD = "wakeup_alarm_threshold"; 50 @VisibleForTesting 51 static final String KEY_WAKEUP_BLACKLISTED_TAGS = "wakeup_blacklisted_tags"; 52 @VisibleForTesting 53 static final String KEY_BLUETOOTH_SCAN_THRESHOLD = "bluetooth_scan_threshold"; 54 55 /** 56 * {@code true} if general anomaly detection is enabled 57 * 58 * @see Settings.Global#ANOMALY_DETECTION_CONSTANTS 59 * @see #KEY_ANOMALY_DETECTION_ENABLED 60 */ 61 final boolean anomalyDetectionEnabled; 62 63 /** 64 * {@code true} if wakelock anomaly detection is enabled 65 * 66 * @see Settings.Global#ANOMALY_DETECTION_CONSTANTS 67 * @see #KEY_WAKELOCK_DETECTION_ENABLED 68 */ 69 final boolean wakeLockDetectionEnabled; 70 71 /** 72 * {@code true} if wakeup alarm detection is enabled 73 * 74 * @see Settings.Global#ANOMALY_DETECTION_CONSTANTS 75 * @see #KEY_WAKEUP_ALARM_DETECTION_ENABLED 76 */ 77 final boolean wakeupAlarmDetectionEnabled; 78 79 /** 80 * {@code true} if bluetooth scanning detection is enabled 81 * 82 * @see Settings.Global#ANOMALY_DETECTION_CONSTANTS 83 * @see #KEY_BLUETOOTH_SCAN_THRESHOLD 84 */ 85 final boolean bluetoothScanDetectionEnabled; 86 87 /** 88 * Threshold for wakelock time in milli seconds 89 * 90 * @see Settings.Global#ANOMALY_DETECTION_CONSTANTS 91 * @see #KEY_WAKELOCK_THRESHOLD 92 */ 93 public final long wakeLockThreshold; 94 95 /** 96 * Threshold for wakeup alarm count per hour 97 * 98 * @see Settings.Global#ANOMALY_DETECTION_CONSTANTS 99 * @see #KEY_WAKEUP_ALARM_THRESHOLD 100 */ 101 public final long wakeupAlarmThreshold; 102 103 /** 104 * Array of blacklisted wakeups, by tag. 105 * 106 * @see Settings.Global#ANOMALY_DETECTION_CONSTANTS 107 * @see #KEY_WAKEUP_BLACKLISTED_TAGS 108 */ 109 public final Set<String> wakeupBlacklistedTags; 110 111 /** 112 * Threshold for bluetooth unoptimized scanning time in milli seconds 113 * 114 * @see Settings.Global#ANOMALY_DETECTION_CONSTANTS 115 * @see #KEY_BLUETOOTH_SCAN_THRESHOLD 116 */ 117 public final long bluetoothScanThreshold; 118 119 private final KeyValueListParser mParser; 120 121 public AnomalyDetectionPolicy(Context context) { 122 mParser = new KeyValueListParser(','); 123 final String value = Settings.Global.getString(context.getContentResolver(), 124 Settings.Global.ANOMALY_DETECTION_CONSTANTS); 125 126 try { 127 mParser.setString(value); 128 } catch (IllegalArgumentException e) { 129 Log.e(TAG, "Bad anomaly detection constants"); 130 } 131 132 anomalyDetectionEnabled = 133 mParser.getBoolean(KEY_ANOMALY_DETECTION_ENABLED, false); 134 wakeLockDetectionEnabled = 135 mParser.getBoolean(KEY_WAKELOCK_DETECTION_ENABLED,false); 136 wakeupAlarmDetectionEnabled = 137 mParser.getBoolean(KEY_WAKEUP_ALARM_DETECTION_ENABLED,false); 138 bluetoothScanDetectionEnabled = mParser.getBoolean( 139 KEY_BLUETOOTH_SCAN_DETECTION_ENABLED, false); 140 wakeLockThreshold = mParser.getLong(KEY_WAKELOCK_THRESHOLD, 141 DateUtils.HOUR_IN_MILLIS); 142 wakeupAlarmThreshold = mParser.getLong(KEY_WAKEUP_ALARM_THRESHOLD, 10); 143 wakeupBlacklistedTags = parseStringSet(KEY_WAKEUP_BLACKLISTED_TAGS, null); 144 bluetoothScanThreshold = mParser.getLong(KEY_BLUETOOTH_SCAN_THRESHOLD, 145 30 * DateUtils.MINUTE_IN_MILLIS); 146 } 147 148 public boolean isAnomalyDetectionEnabled() { 149 return anomalyDetectionEnabled; 150 } 151 152 public boolean isAnomalyDetectorEnabled(@Anomaly.AnomalyType int type) { 153 switch (type) { 154 case Anomaly.AnomalyType.WAKE_LOCK: 155 return wakeLockDetectionEnabled; 156 case Anomaly.AnomalyType.WAKEUP_ALARM: 157 return wakeupAlarmDetectionEnabled; 158 case Anomaly.AnomalyType.BLUETOOTH_SCAN: 159 return bluetoothScanDetectionEnabled; 160 default: 161 return false; // Disabled when no this type 162 } 163 } 164 165 private Set<String> parseStringSet(final String key, final Set<String> defaultSet) { 166 final String value = mParser.getString(key, null); 167 if (value != null) { 168 return Arrays.stream(value.split(":")) 169 .map(String::trim).map(Uri::decode).collect(Collectors.toSet()); 170 } else { 171 return defaultSet; 172 } 173 } 174 } 175
