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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.server.backup;
import android.app.AlarmManager;
import android.content.ContentResolver;
import android.content.Context;
import android.content.res.Resources;
import android.database.ContentObserver;
import android.net.Uri;
import android.os.Handler;
import android.provider.Settings;
import android.text.TextUtils;
import android.util.KeyValueListParser;
import android.util.Slog;
/**
* Class to access backup manager constants.
*
* The backup manager constants are encoded as a key value list separated by commas
* and stored as a Settings.Secure.
*/
class BackupManagerConstants extends ContentObserver {
private static final String TAG = "BackupManagerConstants";
// Key names stored in the secure settings value.
private static final String KEY_VALUE_BACKUP_INTERVAL_MILLISECONDS =
"key_value_backup_interval_milliseconds";
private static final String KEY_VALUE_BACKUP_FUZZ_MILLISECONDS =
"key_value_backup_fuzz_milliseconds";
private static final String KEY_VALUE_BACKUP_REQUIRE_CHARGING =
"key_value_backup_require_charging";
private static final String KEY_VALUE_BACKUP_REQUIRED_NETWORK_TYPE =
"key_value_backup_required_network_type";
private static final String FULL_BACKUP_INTERVAL_MILLISECONDS =
"full_backup_interval_milliseconds";
private static final String FULL_BACKUP_REQUIRE_CHARGING =
"full_backup_require_charging";
private static final String FULL_BACKUP_REQUIRED_NETWORK_TYPE =
"full_backup_required_network_type";
private static final String BACKUP_FINISHED_NOTIFICATION_RECEIVERS =
"backup_finished_notification_receivers";
// Hard coded default values.
private static final long DEFAULT_KEY_VALUE_BACKUP_INTERVAL_MILLISECONDS =
4 * AlarmManager.INTERVAL_HOUR;
private static final long DEFAULT_KEY_VALUE_BACKUP_FUZZ_MILLISECONDS =
10 * 60 * 1000;
private static final boolean DEFAULT_KEY_VALUE_BACKUP_REQUIRE_CHARGING = true;
private static final int DEFAULT_KEY_VALUE_BACKUP_REQUIRED_NETWORK_TYPE = 1;
private static final long DEFAULT_FULL_BACKUP_INTERVAL_MILLISECONDS =
24 * AlarmManager.INTERVAL_HOUR;
private static final boolean DEFAULT_FULL_BACKUP_REQUIRE_CHARGING = true;
private static final int DEFAULT_FULL_BACKUP_REQUIRED_NETWORK_TYPE = 2;
private static final String DEFAULT_BACKUP_FINISHED_NOTIFICATION_RECEIVERS = "";
// Backup manager constants.
private long mKeyValueBackupIntervalMilliseconds;
private long mKeyValueBackupFuzzMilliseconds;
private boolean mKeyValueBackupRequireCharging;
private int mKeyValueBackupRequiredNetworkType;
private long mFullBackupIntervalMilliseconds;
private boolean mFullBackupRequireCharging;
private int mFullBackupRequiredNetworkType;
private String[] mBackupFinishedNotificationReceivers;
private ContentResolver mResolver;
private final KeyValueListParser mParser = new KeyValueListParser(',');
public BackupManagerConstants(Handler handler, ContentResolver resolver) {
super(handler);
mResolver = resolver;
updateSettings();
}
public void start() {
mResolver.registerContentObserver(
Settings.Secure.getUriFor(Settings.Secure.BACKUP_MANAGER_CONSTANTS), false, this);
}
@Override
public void onChange(boolean selfChange, Uri uri) {
updateSettings();
}
private synchronized void updateSettings() {
try {
mParser.setString(Settings.Secure.getString(mResolver,
Settings.Secure.BACKUP_MANAGER_CONSTANTS));
} catch (IllegalArgumentException e) {
// Failed to parse the settings string. Use defaults.
Slog.e(TAG, "Bad backup manager constants: " + e.getMessage());
}
mKeyValueBackupIntervalMilliseconds = mParser.getLong(
KEY_VALUE_BACKUP_INTERVAL_MILLISECONDS,
DEFAULT_KEY_VALUE_BACKUP_INTERVAL_MILLISECONDS);
mKeyValueBackupFuzzMilliseconds = mParser.getLong(KEY_VALUE_BACKUP_FUZZ_MILLISECONDS,
DEFAULT_KEY_VALUE_BACKUP_FUZZ_MILLISECONDS);
mKeyValueBackupRequireCharging = mParser.getBoolean(KEY_VALUE_BACKUP_REQUIRE_CHARGING,
DEFAULT_KEY_VALUE_BACKUP_REQUIRE_CHARGING);
mKeyValueBackupRequiredNetworkType = mParser.getInt(KEY_VALUE_BACKUP_REQUIRED_NETWORK_TYPE,
DEFAULT_KEY_VALUE_BACKUP_REQUIRED_NETWORK_TYPE);
mFullBackupIntervalMilliseconds = mParser.getLong(FULL_BACKUP_INTERVAL_MILLISECONDS,
DEFAULT_FULL_BACKUP_INTERVAL_MILLISECONDS);
mFullBackupRequireCharging = mParser.getBoolean(FULL_BACKUP_REQUIRE_CHARGING,
DEFAULT_FULL_BACKUP_REQUIRE_CHARGING);
mFullBackupRequiredNetworkType = mParser.getInt(FULL_BACKUP_REQUIRED_NETWORK_TYPE,
DEFAULT_FULL_BACKUP_REQUIRED_NETWORK_TYPE);
final String backupFinishedNotificationReceivers = mParser.getString(
BACKUP_FINISHED_NOTIFICATION_RECEIVERS,
DEFAULT_BACKUP_FINISHED_NOTIFICATION_RECEIVERS);
if (backupFinishedNotificationReceivers.isEmpty()) {
mBackupFinishedNotificationReceivers = new String[] {};
} else {
mBackupFinishedNotificationReceivers = backupFinishedNotificationReceivers.split(":");
}
}
// The following are access methods for the individual parameters.
// To be sure to retrieve values from the same set of settings,
// group the calls of these methods in a block syncrhonized on
// a reference of this object.
public synchronized long getKeyValueBackupIntervalMilliseconds() {
if (RefactoredBackupManagerService.DEBUG_SCHEDULING) {
Slog.v(TAG, "getKeyValueBackupIntervalMilliseconds(...) returns "
+ mKeyValueBackupIntervalMilliseconds);
}
return mKeyValueBackupIntervalMilliseconds;
}
public synchronized long getKeyValueBackupFuzzMilliseconds() {
if (RefactoredBackupManagerService.DEBUG_SCHEDULING) {
Slog.v(TAG, "getKeyValueBackupFuzzMilliseconds(...) returns "
+ mKeyValueBackupFuzzMilliseconds);
}
return mKeyValueBackupFuzzMilliseconds;
}
public synchronized boolean getKeyValueBackupRequireCharging() {
if (RefactoredBackupManagerService.DEBUG_SCHEDULING) {
Slog.v(TAG, "getKeyValueBackupRequireCharging(...) returns "
+ mKeyValueBackupRequireCharging);
}
return mKeyValueBackupRequireCharging;
}
public synchronized int getKeyValueBackupRequiredNetworkType() {
if (RefactoredBackupManagerService.DEBUG_SCHEDULING) {
Slog.v(TAG, "getKeyValueBackupRequiredNetworkType(...) returns "
+ mKeyValueBackupRequiredNetworkType);
}
return mKeyValueBackupRequiredNetworkType;
}
public synchronized long getFullBackupIntervalMilliseconds() {
if (RefactoredBackupManagerService.DEBUG_SCHEDULING) {
Slog.v(TAG, "getFullBackupIntervalMilliseconds(...) returns "
+ mFullBackupIntervalMilliseconds);
}
return mFullBackupIntervalMilliseconds;
}
public synchronized boolean getFullBackupRequireCharging() {
if (RefactoredBackupManagerService.DEBUG_SCHEDULING) {
Slog.v(TAG, "getFullBackupRequireCharging(...) returns " + mFullBackupRequireCharging);
}
return mFullBackupRequireCharging;
}
public synchronized int getFullBackupRequiredNetworkType() {
if (RefactoredBackupManagerService.DEBUG_SCHEDULING) {
Slog.v(TAG, "getFullBackupRequiredNetworkType(...) returns "
+ mFullBackupRequiredNetworkType);
}
return mFullBackupRequiredNetworkType;
}
public synchronized String[] getBackupFinishedNotificationReceivers() {
if (RefactoredBackupManagerService.DEBUG_SCHEDULING) {
Slog.v(TAG, "getBackupFinishedNotificationReceivers(...) returns "
+ TextUtils.join(", ", mBackupFinishedNotificationReceivers));
}
return mBackupFinishedNotificationReceivers;
}
}
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