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[B&R] backup the getFullPowerWhitelist() for battery setting

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BYPASS_INCLUSIVE_LANGUAGE_REASON=legacy method name

Test command for backup manager:
adb shell bmgr backupnow com.android.settings
adb shell dumpsys backup | grep Current

Bug: 192523697
Test: make SettingsRoboTests
Change-Id: I2d5c51b5b5788d703a233f5df719a298382feb98
This commit is contained in:
ykhung
2021-08-18 16:52:02 +08:00
committed by YUKAI HUNG
parent 518d6df4f4
commit 7cbc683d3e
2 changed files with 229 additions and 2 deletions
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74
src/com/android/settings/fuelgauge/BatteryBackupHelper.java
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@@ -20,24 +20,47 @@ import android.app.backup.BackupDataInputStream;
import android.app.backup.BackupDataOutput;
import android.app.backup.BackupHelper;
import android.content.Context;
import android.os.IDeviceIdleController;
import android.os.RemoteException;
import android.os.ParcelFileDescriptor;
import android.os.ServiceManager;
import android.os.UserHandle;
import android.util.Log;
import androidx.annotation.VisibleForTesting;
import java.io.IOException;
import java.util.Arrays;
/** An implementation to backup and restore battery configurations. */
public final class BatteryBackupHelper implements BackupHelper {
/** An inditifier for {@link BackupHelper}. */
public static final String TAG = "BatteryBackupHelper";
private static final String DEVICE_IDLE_SERVICE = "deviceidle";
private static final boolean DEBUG = false;
@VisibleForTesting
static final CharSequence DELIMITER = ":";
@VisibleForTesting
static final String KEY_FULL_POWER_LIST = "full_power_list";
@VisibleForTesting
IDeviceIdleController mIDeviceIdleController;
private final Context mContext;
public BatteryBackupHelper(Context context) {
mContext = context;
mContext = context.getApplicationContext();
}
@Override
public void performBackup(ParcelFileDescriptor oldState, BackupDataOutput data,
ParcelFileDescriptor newState) {
Log.d(TAG, "performBackup()");
if (!isOwner()) {
Log.w(TAG, "ignore the backup process for non-owner");
return;
}
backupFullPowerList(getIDeviceIdleController(), data);
}
@Override
@@ -48,4 +71,51 @@ public final class BatteryBackupHelper implements BackupHelper {
@Override
public void writeNewStateDescription(ParcelFileDescriptor newState) {
}
private void backupFullPowerList(
IDeviceIdleController deviceIdleService, BackupDataOutput data) {
final long timestamp = System.currentTimeMillis();
String[] allowlistedApps;
try {
allowlistedApps = deviceIdleService.getFullPowerWhitelist();
} catch (RemoteException e) {
Log.e(TAG, "backupFullPowerList() failed", e);
return;
}
// Ignores unexpected emptty result case.
if (allowlistedApps == null || allowlistedApps.length == 0) {
Log.w(TAG, "no data found in the getFullPowerList()");
return;
}
debugLog("allowlistedApps:" + Arrays.toString(allowlistedApps));
final String allowedApps = String.join(DELIMITER, allowlistedApps);
final byte[] allowedAppsBytes = allowedApps.getBytes();
try {
data.writeEntityHeader(KEY_FULL_POWER_LIST, allowedAppsBytes.length);
data.writeEntityData(allowedAppsBytes, allowedAppsBytes.length);
} catch (IOException e) {
Log.e(TAG, "backup getFullPowerList() failed", e);
return;
}
Log.d(TAG, String.format("backup getFullPowerList() size=%d in %d/ms",
allowlistedApps.length, (System.currentTimeMillis() - timestamp)));
}
// Provides an opportunity to inject mock IDeviceIdleController for testing.
private IDeviceIdleController getIDeviceIdleController() {
if (mIDeviceIdleController != null) {
return mIDeviceIdleController;
}
mIDeviceIdleController = IDeviceIdleController.Stub.asInterface(
ServiceManager.getService(DEVICE_IDLE_SERVICE));
return mIDeviceIdleController;
}
private void debugLog(String debugContent) {
if (DEBUG) Log.d(TAG, debugContent);
}
private static boolean isOwner() {
return UserHandle.myUserId() == UserHandle.USER_OWNER;
}
}