| /* |
| * Copyright (C) 2018 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; |
| |
| import android.content.BroadcastReceiver; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.IntentFilter; |
| import android.os.BatteryManager; |
| import android.os.BatteryManagerInternal; |
| import android.os.OsProtoEnums; |
| import android.os.PowerManager; |
| import android.util.Slog; |
| |
| import com.android.internal.os.CachedDeviceState; |
| |
| /** |
| * Tracks changes to the device state (e.g. charging/on battery, screen on/off) to share it with |
| * the System Server telemetry services. |
| * |
| * @hide Only for use within the system server. |
| */ |
| public class CachedDeviceStateService extends SystemService { |
| private static final String TAG = "CachedDeviceStateService"; |
| private final CachedDeviceState mDeviceState = new CachedDeviceState(); |
| private final BroadcastReceiver mBroadcastReceiver = new BroadcastReceiver() { |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| switch (intent.getAction()) { |
| case Intent.ACTION_BATTERY_CHANGED: |
| mDeviceState.setCharging( |
| intent.getIntExtra(BatteryManager.EXTRA_PLUGGED, |
| OsProtoEnums.BATTERY_PLUGGED_NONE) |
| != OsProtoEnums.BATTERY_PLUGGED_NONE); |
| break; |
| case Intent.ACTION_SCREEN_ON: |
| mDeviceState.setScreenInteractive(true); |
| break; |
| case Intent.ACTION_SCREEN_OFF: |
| mDeviceState.setScreenInteractive(false); |
| break; |
| } |
| } |
| }; |
| |
| public CachedDeviceStateService(Context context) { |
| super(context); |
| } |
| |
| @Override |
| public void onStart() { |
| publishLocalService(CachedDeviceState.Readonly.class, mDeviceState.getReadonlyClient()); |
| } |
| |
| @Override |
| public void onBootPhase(int phase) { |
| if (SystemService.PHASE_SYSTEM_SERVICES_READY == phase) { |
| final IntentFilter filter = new IntentFilter(); |
| filter.addAction(Intent.ACTION_BATTERY_CHANGED); |
| filter.addAction(Intent.ACTION_SCREEN_ON); |
| filter.addAction(Intent.ACTION_SCREEN_OFF); |
| filter.setPriority(IntentFilter.SYSTEM_HIGH_PRIORITY); |
| getContext().registerReceiver(mBroadcastReceiver, filter); |
| mDeviceState.setCharging(queryIsCharging()); |
| mDeviceState.setScreenInteractive(queryScreenInteractive(getContext())); |
| } |
| } |
| |
| private boolean queryIsCharging() { |
| final BatteryManagerInternal batteryManager = |
| LocalServices.getService(BatteryManagerInternal.class); |
| if (batteryManager == null) { |
| Slog.wtf(TAG, "BatteryManager null while starting CachedDeviceStateService"); |
| // Default to true to not collect any data. |
| return true; |
| } else { |
| return batteryManager.getPlugType() != OsProtoEnums.BATTERY_PLUGGED_NONE; |
| } |
| } |
| |
| private boolean queryScreenInteractive(Context context) { |
| final PowerManager powerManager = context.getSystemService(PowerManager.class); |
| if (powerManager == null) { |
| Slog.wtf(TAG, "PowerManager null while starting CachedDeviceStateService"); |
| return false; |
| } else { |
| return powerManager.isInteractive(); |
| } |
| } |
| } |