| /* |
| * Copyright (C) 2021 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.tare; |
| |
| import android.annotation.NonNull; |
| import android.content.BroadcastReceiver; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.IntentFilter; |
| import android.os.BatteryManager; |
| import android.os.SystemClock; |
| import android.util.IndentingPrintWriter; |
| import android.util.Log; |
| import android.util.Slog; |
| |
| /** Modifier that makes things free when the device is charging. */ |
| class ChargingModifier extends Modifier { |
| private static final String TAG = "TARE-" + ChargingModifier.class.getSimpleName(); |
| private static final boolean DEBUG = InternalResourceService.DEBUG |
| || Log.isLoggable(TAG, Log.DEBUG); |
| |
| private final InternalResourceService mIrs; |
| private final ChargingTracker mChargingTracker; |
| |
| ChargingModifier(@NonNull InternalResourceService irs) { |
| super(); |
| mIrs = irs; |
| mChargingTracker = new ChargingTracker(); |
| } |
| |
| @Override |
| public void setup() { |
| mChargingTracker.startTracking(mIrs.getContext()); |
| } |
| |
| @Override |
| public void tearDown() { |
| mChargingTracker.stopTracking(mIrs.getContext()); |
| } |
| |
| @Override |
| long getModifiedCostToProduce(long ctp) { |
| return modifyValue(ctp); |
| } |
| |
| @Override |
| long getModifiedPrice(long price) { |
| return modifyValue(price); |
| } |
| |
| private long modifyValue(long val) { |
| if (mChargingTracker.mCharging) { |
| return 0; |
| } |
| return val; |
| } |
| |
| @Override |
| void dump(IndentingPrintWriter pw) { |
| pw.print("charging="); |
| pw.println(mChargingTracker.mCharging); |
| } |
| |
| private final class ChargingTracker extends BroadcastReceiver { |
| private boolean mIsSetup = false; |
| |
| /** |
| * Track whether we're "charging", where charging means that we're ready to commit to |
| * doing work. |
| */ |
| private volatile boolean mCharging; |
| |
| public void startTracking(@NonNull Context context) { |
| if (mIsSetup) { |
| return; |
| } |
| |
| final IntentFilter filter = new IntentFilter(); |
| filter.addAction(BatteryManager.ACTION_CHARGING); |
| filter.addAction(BatteryManager.ACTION_DISCHARGING); |
| context.registerReceiver(this, filter); |
| |
| // Initialise tracker state. |
| final BatteryManager batteryManager = context.getSystemService(BatteryManager.class); |
| mCharging = batteryManager.isCharging(); |
| |
| mIsSetup = true; |
| } |
| |
| public void stopTracking(@NonNull Context context) { |
| if (!mIsSetup) { |
| return; |
| } |
| |
| context.unregisterReceiver(this); |
| mIsSetup = false; |
| } |
| |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| final String action = intent.getAction(); |
| if (BatteryManager.ACTION_CHARGING.equals(action)) { |
| if (DEBUG) { |
| Slog.d(TAG, "Received charging intent, fired @ " |
| + SystemClock.elapsedRealtime()); |
| } |
| if (!mCharging) { |
| mCharging = true; |
| mIrs.onDeviceStateChanged(); |
| } |
| } else if (BatteryManager.ACTION_DISCHARGING.equals(action)) { |
| if (DEBUG) { |
| Slog.d(TAG, "Disconnected from power."); |
| } |
| if (mCharging) { |
| mCharging = false; |
| mIrs.onDeviceStateChanged(); |
| } |
| } |
| } |
| } |
| } |