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/*
* 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.settings.fuelgauge.anomaly;
import android.content.Context;
import android.content.pm.PackageManager;
import android.os.BatteryStats;
import android.os.Bundle;
import android.os.UserManager;
import android.support.annotation.VisibleForTesting;
import android.util.Log;
import com.android.internal.os.BatteryStatsHelper;
import com.android.settings.utils.AsyncLoader;
import java.util.ArrayList;
import java.util.List;
/**
* Loader to compute which apps are anomaly and return a anomaly list. It will return
* an empty list if there is no anomaly.
*/
public class AnomalyLoader extends AsyncLoader<List<Anomaly>> {
private static final String TAG = "AnomalyLoader";
private static final boolean USE_FAKE_DATA = false;
private BatteryStatsHelper mBatteryStatsHelper;
private String mPackageName;
private UserManager mUserManager;
@VisibleForTesting
AnomalyUtils mAnomalyUtils;
@VisibleForTesting
AnomalyDetectionPolicy mPolicy;
/**
* Create {@link AnomalyLoader} that runs anomaly check for all apps.
*/
public AnomalyLoader(Context context, BatteryStatsHelper batteryStatsHelper) {
this(context, batteryStatsHelper, null, new AnomalyDetectionPolicy(context));
}
/**
* Create {@link AnomalyLoader} with {@code packageName}, so this loader will only
* detect anomalies related to {@code packageName}, or check all apps if {@code packageName}
* is {@code null}.
*
* This constructor will create {@link BatteryStatsHelper} in background thread.
*
* @param packageName if set, only finds anomalies for this package. If {@code null},
* detects all anomalies of this type.
*/
public AnomalyLoader(Context context, String packageName) {
this(context, null, packageName, new AnomalyDetectionPolicy(context));
}
@VisibleForTesting
AnomalyLoader(Context context, BatteryStatsHelper batteryStatsHelper,
String packageName, AnomalyDetectionPolicy policy) {
super(context);
mBatteryStatsHelper = batteryStatsHelper;
mPackageName = packageName;
mAnomalyUtils = AnomalyUtils.getInstance(context);
mUserManager = (UserManager) context.getSystemService(Context.USER_SERVICE);
mPolicy = policy;
}
@Override
protected void onDiscardResult(List<Anomaly> result) {
}
@Override
public List<Anomaly> loadInBackground() {
if (USE_FAKE_DATA) {
return generateFakeData();
}
if (mBatteryStatsHelper == null) {
mBatteryStatsHelper = new BatteryStatsHelper(getContext());
mBatteryStatsHelper.create((Bundle) null);
mBatteryStatsHelper.refreshStats(BatteryStats.STATS_SINCE_CHARGED,
mUserManager.getUserProfiles());
}
final List<Anomaly> anomalies = new ArrayList<>();
for (@Anomaly.AnomalyType int type : Anomaly.ANOMALY_TYPE_LIST) {
if (mPolicy.isAnomalyDetectorEnabled(type)) {
anomalies.addAll(mAnomalyUtils.getAnomalyDetector(type).detectAnomalies(
mBatteryStatsHelper, mPackageName));
}
}
return anomalies;
}
@VisibleForTesting
List<Anomaly> generateFakeData() {
final List<Anomaly> anomalies = new ArrayList<>();
final Context context = getContext();
final String packageName = "com.android.settings";
final CharSequence displayName = "Settings";
try {
final int uid = context.getPackageManager().getPackageUid(packageName, 0);
anomalies.add(new Anomaly.Builder()
.setUid(uid)
.setType(Anomaly.AnomalyType.WAKE_LOCK)
.setPackageName(packageName)
.setDisplayName(displayName)
.build());
anomalies.add(new Anomaly.Builder()
.setUid(uid)
.setType(Anomaly.AnomalyType.WAKEUP_ALARM)
.setPackageName(packageName)
.setDisplayName(displayName)
.build());
anomalies.add(new Anomaly.Builder()
.setUid(uid)
.setType(Anomaly.AnomalyType.BLUETOOTH_SCAN)
.setPackageName(packageName)
.setDisplayName(displayName)
.build());
} catch (PackageManager.NameNotFoundException e) {
Log.e(TAG, "Cannot find package by name: " + packageName, e);
}
return anomalies;
}
}
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