| /* |
| * Copyright (C) 2017 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package com.android.server.devicepolicy; |
| |
| import android.util.KeyValueListParser; |
| import android.util.Slog; |
| |
| import java.io.PrintWriter; |
| import java.util.concurrent.TimeUnit; |
| |
| /** |
| * Constants that are configurable via the global settings for {@link DevicePolicyManagerService}. |
| * |
| * Example of setting the values for testing. |
| * adb shell settings put global device_policy_constants das_died_service_reconnect_backoff_sec=10,das_died_service_reconnect_backoff_increase=1.5,das_died_service_reconnect_max_backoff_sec=30 |
| */ |
| public class DevicePolicyConstants { |
| private static final String TAG = DevicePolicyManagerService.LOG_TAG; |
| |
| private static final String DAS_DIED_SERVICE_RECONNECT_BACKOFF_SEC_KEY = |
| "das_died_service_reconnect_backoff_sec"; |
| |
| private static final String DAS_DIED_SERVICE_RECONNECT_BACKOFF_INCREASE_KEY = |
| "das_died_service_reconnect_backoff_increase"; |
| |
| private static final String DAS_DIED_SERVICE_RECONNECT_MAX_BACKOFF_SEC_KEY = |
| "das_died_service_reconnect_max_backoff_sec"; |
| |
| private static final String DAS_DIED_SERVICE_STABLE_CONNECTION_THRESHOLD_SEC_KEY = |
| "das_died_service_stable_connection_threshold_sec"; |
| |
| private static final String BATTERY_THRESHOLD_NOT_CHARGING_KEY = |
| "battery_threshold_not_charging"; |
| |
| private static final String BATTERY_THRESHOLD_CHARGING_KEY = |
| "battery_threshold_charging"; |
| |
| /** |
| * The back-off before re-connecting, when a service binding died, due to the owner |
| * crashing repeatedly. |
| */ |
| public final long DAS_DIED_SERVICE_RECONNECT_BACKOFF_SEC; |
| |
| /** |
| * The exponential back-off increase factor when a binding dies multiple times. |
| */ |
| public final double DAS_DIED_SERVICE_RECONNECT_BACKOFF_INCREASE; |
| |
| /** |
| * The max back-off |
| */ |
| public final long DAS_DIED_SERVICE_RECONNECT_MAX_BACKOFF_SEC; |
| |
| /** |
| * If a connection lasts more than this duration, we reset the re-connect back-off time. |
| */ |
| public final long DAS_DIED_SERVICE_STABLE_CONNECTION_THRESHOLD_SEC; |
| |
| /** |
| * Battery threshold for installing system update while the device is not charging. |
| */ |
| public final int BATTERY_THRESHOLD_NOT_CHARGING; |
| |
| /** |
| * Battery threshold for installing system update while the device is charging. |
| */ |
| public final int BATTERY_THRESHOLD_CHARGING; |
| |
| |
| private DevicePolicyConstants(String settings) { |
| |
| final KeyValueListParser parser = new KeyValueListParser(','); |
| try { |
| parser.setString(settings); |
| } catch (IllegalArgumentException e) { |
| // Failed to parse the settings string, log this and move on |
| // with defaults. |
| Slog.e(TAG, "Bad device policy settings: " + settings); |
| } |
| |
| long dasDiedServiceReconnectBackoffSec = parser.getLong( |
| DAS_DIED_SERVICE_RECONNECT_BACKOFF_SEC_KEY, TimeUnit.HOURS.toSeconds(1)); |
| |
| double dasDiedServiceReconnectBackoffIncrease = parser.getFloat( |
| DAS_DIED_SERVICE_RECONNECT_BACKOFF_INCREASE_KEY, 2f); |
| |
| long dasDiedServiceReconnectMaxBackoffSec = parser.getLong( |
| DAS_DIED_SERVICE_RECONNECT_MAX_BACKOFF_SEC_KEY, TimeUnit.DAYS.toSeconds(1)); |
| |
| long dasDiedServiceStableConnectionThresholdSec = parser.getLong( |
| DAS_DIED_SERVICE_STABLE_CONNECTION_THRESHOLD_SEC_KEY, |
| TimeUnit.MINUTES.toSeconds(2)); |
| |
| int batteryThresholdNotCharging = parser.getInt( |
| BATTERY_THRESHOLD_NOT_CHARGING_KEY, 40); |
| |
| int batteryThresholdCharging = parser.getInt( |
| BATTERY_THRESHOLD_CHARGING_KEY, 20); |
| |
| // Set minimum: 5 seconds. |
| dasDiedServiceReconnectBackoffSec = Math.max(5, dasDiedServiceReconnectBackoffSec); |
| |
| // Set minimum: 1.0. |
| dasDiedServiceReconnectBackoffIncrease = |
| Math.max(1, dasDiedServiceReconnectBackoffIncrease); |
| |
| // Make sure max >= default back off. |
| dasDiedServiceReconnectMaxBackoffSec = Math.max(dasDiedServiceReconnectBackoffSec, |
| dasDiedServiceReconnectMaxBackoffSec); |
| |
| DAS_DIED_SERVICE_RECONNECT_BACKOFF_SEC = dasDiedServiceReconnectBackoffSec; |
| DAS_DIED_SERVICE_RECONNECT_BACKOFF_INCREASE = dasDiedServiceReconnectBackoffIncrease; |
| DAS_DIED_SERVICE_RECONNECT_MAX_BACKOFF_SEC = dasDiedServiceReconnectMaxBackoffSec; |
| DAS_DIED_SERVICE_STABLE_CONNECTION_THRESHOLD_SEC = |
| dasDiedServiceStableConnectionThresholdSec; |
| BATTERY_THRESHOLD_NOT_CHARGING = batteryThresholdNotCharging; |
| BATTERY_THRESHOLD_CHARGING = batteryThresholdCharging; |
| } |
| |
| public static DevicePolicyConstants loadFromString(String settings) { |
| return new DevicePolicyConstants(settings); |
| } |
| |
| public void dump(String prefix, PrintWriter pw) { |
| pw.print(prefix); |
| pw.println("Constants:"); |
| |
| pw.print(prefix); |
| pw.print(" DAS_DIED_SERVICE_RECONNECT_BACKOFF_SEC: "); |
| pw.println(DAS_DIED_SERVICE_RECONNECT_BACKOFF_SEC); |
| |
| pw.print(prefix); |
| pw.print(" DAS_DIED_SERVICE_RECONNECT_BACKOFF_INCREASE: "); |
| pw.println(DAS_DIED_SERVICE_RECONNECT_BACKOFF_INCREASE); |
| |
| pw.print(prefix); |
| pw.print(" DAS_DIED_SERVICE_RECONNECT_MAX_BACKOFF_SEC: "); |
| pw.println(DAS_DIED_SERVICE_RECONNECT_MAX_BACKOFF_SEC); |
| |
| pw.print(prefix); |
| pw.print(" DAS_DIED_SERVICE_STABLE_CONNECTION_THRESHOLD_SEC: "); |
| pw.println(DAS_DIED_SERVICE_STABLE_CONNECTION_THRESHOLD_SEC); |
| } |
| } |