SettingsState.java revision 9e9e2e73c6ec7bece20268196dc89ad0c8bafad4
1683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav/* 2683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav * Copyright (C) 2015 The Android Open Source Project 3683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav * 4683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav * Licensed under the Apache License, Version 2.0 (the "License"); 5683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav * you may not use this file except in compliance with the License. 6683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav * You may obtain a copy of the License at 7683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav * 8683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav * http://www.apache.org/licenses/LICENSE-2.0 9683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav * 10683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav * Unless required by applicable law or agreed to in writing, software 11683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav * distributed under the License is distributed on an "AS IS" BASIS, 12683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav * See the License for the specific language governing permissions and 14683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav * limitations under the License. 15683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav */ 16683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 17683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslavpackage com.android.providers.settings; 18683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 19683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslavimport android.os.Handler; 20683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslavimport android.os.Message; 21683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslavimport android.os.SystemClock; 22683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslavimport android.provider.Settings; 23683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslavimport android.text.TextUtils; 24683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslavimport android.util.ArrayMap; 25683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslavimport android.util.AtomicFile; 26683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslavimport android.util.Slog; 27683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslavimport android.util.Xml; 28683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslavimport com.android.internal.annotations.GuardedBy; 29e1519582ab3010a132d4c4f1fa5cc92fad7cbc39Svetoslav Ganovimport com.android.internal.os.BackgroundThread; 30683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslavimport libcore.io.IoUtils; 31683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslavimport libcore.util.Objects; 32683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslavimport org.xmlpull.v1.XmlPullParser; 33683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslavimport org.xmlpull.v1.XmlPullParserException; 34683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslavimport org.xmlpull.v1.XmlSerializer; 35683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 36683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslavimport java.io.File; 37683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslavimport java.io.FileInputStream; 38683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslavimport java.io.FileNotFoundException; 39683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslavimport java.io.FileOutputStream; 40683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslavimport java.io.IOException; 419e9e2e73c6ec7bece20268196dc89ad0c8bafad4Wojciech Staszkiewiczimport java.nio.charset.StandardCharsets; 42683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslavimport java.util.ArrayList; 43683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslavimport java.util.List; 44683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 45683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav/** 46683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav * This class contains the state for one type of settings. It is responsible 47683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav * for saving the state asynchronously to an XML file after a mutation and 48683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav * loading the from an XML file on construction. 49683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav * <p> 50683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav * This class uses the same lock as the settings provider to ensure that 51683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav * multiple changes made by the settings provider, e,g, upgrade, bulk insert, 52683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav * etc, are atomically persisted since the asynchronous persistence is using 53683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav * the same lock to grab the current state to write to disk. 54683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav * </p> 55683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav */ 56683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslavfinal class SettingsState { 57683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav private static final boolean DEBUG = false; 58683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav private static final boolean DEBUG_PERSISTENCE = false; 59683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 60683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav private static final String LOG_TAG = "SettingsState"; 61683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 62683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav private static final long WRITE_SETTINGS_DELAY_MILLIS = 200; 63683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav private static final long MAX_WRITE_SETTINGS_DELAY_MILLIS = 2000; 64683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 65683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav public static final int MAX_BYTES_PER_APP_PACKAGE_UNLIMITED = -1; 66683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav public static final int MAX_BYTES_PER_APP_PACKAGE_LIMITED = 20000; 67683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 68683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav public static final String SYSTEM_PACKAGE_NAME = "android"; 69683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 70683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav public static final int VERSION_UNDEFINED = -1; 71683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 72683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav private static final String TAG_SETTINGS = "settings"; 73683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav private static final String TAG_SETTING = "setting"; 74683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav private static final String ATTR_PACKAGE = "package"; 75683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 76683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav private static final String ATTR_VERSION = "version"; 77683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav private static final String ATTR_ID = "id"; 78683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav private static final String ATTR_NAME = "name"; 79683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav private static final String ATTR_VALUE = "value"; 80683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 81683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav private static final String NULL_VALUE = "null"; 82683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 83683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav private final Object mLock; 84683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 85683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav private final Handler mHandler = new MyHandler(); 86683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 87683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav @GuardedBy("mLock") 88683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav private final ArrayMap<String, Setting> mSettings = new ArrayMap<>(); 89683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 90683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav @GuardedBy("mLock") 91683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav private final ArrayMap<String, Integer> mPackageToMemoryUsage; 92683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 93683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav @GuardedBy("mLock") 94683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav private final int mMaxBytesPerAppPackage; 95683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 96683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav @GuardedBy("mLock") 97683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav private final File mStatePersistFile; 98683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 99683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav public final int mKey; 100683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 101683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav @GuardedBy("mLock") 102683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav private int mVersion = VERSION_UNDEFINED; 103683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 104683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav @GuardedBy("mLock") 105683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav private long mLastNotWrittenMutationTimeMillis; 106683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 107683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav @GuardedBy("mLock") 108683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav private boolean mDirty; 109683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 110683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav @GuardedBy("mLock") 111683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav private boolean mWriteScheduled; 112683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 113b505ccc90667ad69a1b122f025a415a3b2aee6afSvetoslav @GuardedBy("mLock") 114b505ccc90667ad69a1b122f025a415a3b2aee6afSvetoslav private long mNextId; 115b505ccc90667ad69a1b122f025a415a3b2aee6afSvetoslav 116683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav public SettingsState(Object lock, File file, int key, int maxBytesPerAppPackage) { 117683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav // It is important that we use the same lock as the settings provider 118683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav // to ensure multiple mutations on this state are atomicaly persisted 119683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav // as the async persistence should be blocked while we make changes. 120683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav mLock = lock; 121683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav mStatePersistFile = file; 122683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav mKey = key; 123683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav if (maxBytesPerAppPackage == MAX_BYTES_PER_APP_PACKAGE_LIMITED) { 124683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav mMaxBytesPerAppPackage = maxBytesPerAppPackage; 125683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav mPackageToMemoryUsage = new ArrayMap<>(); 126683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } else { 127683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav mMaxBytesPerAppPackage = maxBytesPerAppPackage; 128683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav mPackageToMemoryUsage = null; 129683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 130683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav synchronized (mLock) { 131683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav readStateSyncLocked(); 132683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 133683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 134683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 135683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav // The settings provider must hold its lock when calling here. 136683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav public int getVersionLocked() { 137683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav return mVersion; 138683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 139683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 140683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav // The settings provider must hold its lock when calling here. 141683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav public void setVersionLocked(int version) { 142683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav if (version == mVersion) { 143683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav return; 144683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 145683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav mVersion = version; 146683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 147683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav scheduleWriteIfNeededLocked(); 148683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 149683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 150683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav // The settings provider must hold its lock when calling here. 151683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav public void onPackageRemovedLocked(String packageName) { 152683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav boolean removedSomething = false; 153683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 154683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav final int settingCount = mSettings.size(); 155683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav for (int i = settingCount - 1; i >= 0; i--) { 156683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav String name = mSettings.keyAt(i); 1578de348095f0967ffaa09d2448dc1ccff72a4e284Svet Ganov // Settings defined by us are never dropped. 158683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav if (Settings.System.PUBLIC_SETTINGS.contains(name) 159683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav || Settings.System.PRIVATE_SETTINGS.contains(name)) { 160683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav continue; 161683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 162683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav Setting setting = mSettings.valueAt(i); 163683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav if (packageName.equals(setting.packageName)) { 164683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav mSettings.removeAt(i); 165683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav removedSomething = true; 166683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 167683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 168683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 169683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav if (removedSomething) { 170683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav scheduleWriteIfNeededLocked(); 171683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 172683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 173683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 174683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav // The settings provider must hold its lock when calling here. 175683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav public List<String> getSettingNamesLocked() { 176683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav ArrayList<String> names = new ArrayList<>(); 177683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav final int settingsCount = mSettings.size(); 178683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav for (int i = 0; i < settingsCount; i++) { 179683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav String name = mSettings.keyAt(i); 180683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav names.add(name); 181683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 182683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav return names; 183683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 184683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 185683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav // The settings provider must hold its lock when calling here. 186683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav public Setting getSettingLocked(String name) { 187683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav if (TextUtils.isEmpty(name)) { 188683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav return null; 189683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 190683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav return mSettings.get(name); 191683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 192683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 193683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav // The settings provider must hold its lock when calling here. 194683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav public boolean updateSettingLocked(String name, String value, String packageName) { 195683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav if (!hasSettingLocked(name)) { 196683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav return false; 197683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 198683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 199683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav return insertSettingLocked(name, value, packageName); 200683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 201683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 202683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav // The settings provider must hold its lock when calling here. 203683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav public boolean insertSettingLocked(String name, String value, String packageName) { 204683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav if (TextUtils.isEmpty(name)) { 205683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav return false; 206683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 207683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 208683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav Setting oldState = mSettings.get(name); 209683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav String oldValue = (oldState != null) ? oldState.value : null; 210683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 211683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav if (oldState != null) { 212683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav if (!oldState.update(value, packageName)) { 213683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav return false; 214683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 215683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } else { 216683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav Setting state = new Setting(name, value, packageName); 217683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav mSettings.put(name, state); 218683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 219683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 220683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav updateMemoryUsagePerPackageLocked(packageName, oldValue, value); 221683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 222683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav scheduleWriteIfNeededLocked(); 223683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 224683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav return true; 225683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 226683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 227683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav // The settings provider must hold its lock when calling here. 228683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav public void persistSyncLocked() { 229683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav mHandler.removeMessages(MyHandler.MSG_PERSIST_SETTINGS); 230683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav doWriteState(); 231683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 232683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 233683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav // The settings provider must hold its lock when calling here. 234683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav public boolean deleteSettingLocked(String name) { 235683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav if (TextUtils.isEmpty(name) || !hasSettingLocked(name)) { 236683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav return false; 237683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 238683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 239683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav Setting oldState = mSettings.remove(name); 240683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 241683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav updateMemoryUsagePerPackageLocked(oldState.packageName, oldState.value, null); 242683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 243683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav scheduleWriteIfNeededLocked(); 244683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 245683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav return true; 246683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 247683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 248683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav // The settings provider must hold its lock when calling here. 249683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav public void destroyLocked(Runnable callback) { 250683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav mHandler.removeMessages(MyHandler.MSG_PERSIST_SETTINGS); 251683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav if (callback != null) { 252683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav if (mDirty) { 253683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav // Do it without a delay. 254683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav mHandler.obtainMessage(MyHandler.MSG_PERSIST_SETTINGS, 255683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav callback).sendToTarget(); 256683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav return; 257683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 258683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav callback.run(); 259683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 260683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 261683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 262683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav private void updateMemoryUsagePerPackageLocked(String packageName, String oldValue, 263683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav String newValue) { 264683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav if (mMaxBytesPerAppPackage == MAX_BYTES_PER_APP_PACKAGE_UNLIMITED) { 265683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav return; 266683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 267683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 268683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav if (SYSTEM_PACKAGE_NAME.equals(packageName)) { 269683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav return; 270683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 271683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 272683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav final int oldValueSize = (oldValue != null) ? oldValue.length() : 0; 273683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav final int newValueSize = (newValue != null) ? newValue.length() : 0; 274683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav final int deltaSize = newValueSize - oldValueSize; 275683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 276683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav Integer currentSize = mPackageToMemoryUsage.get(packageName); 277683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav final int newSize = Math.max((currentSize != null) 278683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav ? currentSize + deltaSize : deltaSize, 0); 279683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 280683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav if (newSize > mMaxBytesPerAppPackage) { 281683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav throw new IllegalStateException("You are adding too many system settings. " 2822849465ee19febd5135cb6ab8cb548a3c8ac6a24Svetoslav + "You should stop using system settings for app specific data" 2832849465ee19febd5135cb6ab8cb548a3c8ac6a24Svetoslav + " package: " + packageName); 284683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 285683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 286683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav if (DEBUG) { 287683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav Slog.i(LOG_TAG, "Settings for package: " + packageName 288683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav + " size: " + newSize + " bytes."); 289683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 290683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 291683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav mPackageToMemoryUsage.put(packageName, newSize); 292683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 293683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 294683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav private boolean hasSettingLocked(String name) { 295683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav return mSettings.indexOfKey(name) >= 0; 296683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 297683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 298683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav private void scheduleWriteIfNeededLocked() { 299683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav // If dirty then we have a write already scheduled. 300683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav if (!mDirty) { 301683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav mDirty = true; 302683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav writeStateAsyncLocked(); 303683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 304683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 305683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 306683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav private void writeStateAsyncLocked() { 307683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav final long currentTimeMillis = SystemClock.uptimeMillis(); 308683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 309683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav if (mWriteScheduled) { 310683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav mHandler.removeMessages(MyHandler.MSG_PERSIST_SETTINGS); 311683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 312683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav // If enough time passed, write without holding off anymore. 313683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav final long timeSinceLastNotWrittenMutationMillis = currentTimeMillis 314683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav - mLastNotWrittenMutationTimeMillis; 315683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav if (timeSinceLastNotWrittenMutationMillis >= MAX_WRITE_SETTINGS_DELAY_MILLIS) { 316683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav mHandler.obtainMessage(MyHandler.MSG_PERSIST_SETTINGS).sendToTarget(); 317683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav return; 318683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 319683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 320683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav // Hold off a bit more as settings are frequently changing. 321683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav final long maxDelayMillis = Math.max(mLastNotWrittenMutationTimeMillis 322683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav + MAX_WRITE_SETTINGS_DELAY_MILLIS - currentTimeMillis, 0); 323683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav final long writeDelayMillis = Math.min(WRITE_SETTINGS_DELAY_MILLIS, maxDelayMillis); 324683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 325683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav Message message = mHandler.obtainMessage(MyHandler.MSG_PERSIST_SETTINGS); 326683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav mHandler.sendMessageDelayed(message, writeDelayMillis); 327683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } else { 328683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav mLastNotWrittenMutationTimeMillis = currentTimeMillis; 329683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav Message message = mHandler.obtainMessage(MyHandler.MSG_PERSIST_SETTINGS); 330683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav mHandler.sendMessageDelayed(message, WRITE_SETTINGS_DELAY_MILLIS); 331683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav mWriteScheduled = true; 332683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 333683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 334683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 335683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav private void doWriteState() { 336683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav if (DEBUG_PERSISTENCE) { 337683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav Slog.i(LOG_TAG, "[PERSIST START]"); 338683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 339683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 340683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav AtomicFile destination = new AtomicFile(mStatePersistFile); 341683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 342683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav final int version; 343683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav final ArrayMap<String, Setting> settings; 344683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 345683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav synchronized (mLock) { 346683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav version = mVersion; 347683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav settings = new ArrayMap<>(mSettings); 348683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav mDirty = false; 349683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav mWriteScheduled = false; 350683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 351683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 352683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav FileOutputStream out = null; 353683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav try { 354683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav out = destination.startWrite(); 355683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 356683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav XmlSerializer serializer = Xml.newSerializer(); 3579e9e2e73c6ec7bece20268196dc89ad0c8bafad4Wojciech Staszkiewicz serializer.setOutput(out, StandardCharsets.UTF_8.name()); 358c3f56c3cb51d486e581c26876e2ae1368f91e2caSvetoslav serializer.setFeature("http://xmlpull.org/v1/doc/features.html#indent-output", true); 359683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav serializer.startDocument(null, true); 360683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav serializer.startTag(null, TAG_SETTINGS); 361683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav serializer.attribute(null, ATTR_VERSION, String.valueOf(version)); 362683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 363683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav final int settingCount = settings.size(); 364683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav for (int i = 0; i < settingCount; i++) { 365683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav Setting setting = settings.valueAt(i); 366683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 367683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav serializer.startTag(null, TAG_SETTING); 368683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav serializer.attribute(null, ATTR_ID, setting.getId()); 369683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav serializer.attribute(null, ATTR_NAME, setting.getName()); 370683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav serializer.attribute(null, ATTR_VALUE, packValue(setting.getValue())); 371683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav serializer.attribute(null, ATTR_PACKAGE, packValue(setting.getPackageName())); 372683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav serializer.endTag(null, TAG_SETTING); 373683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 374683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav if (DEBUG_PERSISTENCE) { 375683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav Slog.i(LOG_TAG, "[PERSISTED]" + setting.getName() + "=" + setting.getValue()); 376683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 377683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 378683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 379683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav serializer.endTag(null, TAG_SETTINGS); 380683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav serializer.endDocument(); 381683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav destination.finishWrite(out); 382683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 383683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav if (DEBUG_PERSISTENCE) { 384683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav Slog.i(LOG_TAG, "[PERSIST END]"); 385683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 386683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 387ba0821ed3bc2536be02df1ae850619b111cbd6f4Svet Ganov // Any error while writing is fatal. 388ba0821ed3bc2536be02df1ae850619b111cbd6f4Svet Ganov } catch (Throwable t) { 389ba0821ed3bc2536be02df1ae850619b111cbd6f4Svet Ganov Slog.wtf(LOG_TAG, "Failed to write settings, restoring backup", t); 390683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav destination.failWrite(out); 391e723e54650c5ace8beb47bc4d3c493e276e65d91Svet Ganov throw new IllegalStateException("Failed to write settings, restoring backup", t); 392683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } finally { 393683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav IoUtils.closeQuietly(out); 394683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 395683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 396683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 397683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav private void readStateSyncLocked() { 398683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav FileInputStream in; 399683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav if (!mStatePersistFile.exists()) { 400683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav return; 401683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 402683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav try { 403683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav in = new FileInputStream(mStatePersistFile); 404683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } catch (FileNotFoundException fnfe) { 405683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav Slog.i(LOG_TAG, "No settings state"); 406683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav return; 407683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 408683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav try { 409683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav XmlPullParser parser = Xml.newPullParser(); 4109e9e2e73c6ec7bece20268196dc89ad0c8bafad4Wojciech Staszkiewicz parser.setInput(in, StandardCharsets.UTF_8.name()); 411683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav parseStateLocked(parser); 412ba0821ed3bc2536be02df1ae850619b111cbd6f4Svet Ganov 413e723e54650c5ace8beb47bc4d3c493e276e65d91Svet Ganov } catch (XmlPullParserException | IOException e) { 414683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav throw new IllegalStateException("Failed parsing settings file: " 415e723e54650c5ace8beb47bc4d3c493e276e65d91Svet Ganov + mStatePersistFile , e); 416683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } finally { 417683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav IoUtils.closeQuietly(in); 418683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 419683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 420683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 421683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav private void parseStateLocked(XmlPullParser parser) 422683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav throws IOException, XmlPullParserException { 4238440ca3934dbb65743b357006e4a019e4351d479Svet Ganov final int outerDepth = parser.getDepth(); 4248440ca3934dbb65743b357006e4a019e4351d479Svet Ganov int type; 4258440ca3934dbb65743b357006e4a019e4351d479Svet Ganov while ((type = parser.next()) != XmlPullParser.END_DOCUMENT 4268440ca3934dbb65743b357006e4a019e4351d479Svet Ganov && (type != XmlPullParser.END_TAG || parser.getDepth() > outerDepth)) { 4278440ca3934dbb65743b357006e4a019e4351d479Svet Ganov if (type == XmlPullParser.END_TAG || type == XmlPullParser.TEXT) { 4288440ca3934dbb65743b357006e4a019e4351d479Svet Ganov continue; 4298440ca3934dbb65743b357006e4a019e4351d479Svet Ganov } 430683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 4318440ca3934dbb65743b357006e4a019e4351d479Svet Ganov String tagName = parser.getName(); 4328440ca3934dbb65743b357006e4a019e4351d479Svet Ganov if (tagName.equals(TAG_SETTINGS)) { 4338440ca3934dbb65743b357006e4a019e4351d479Svet Ganov parseSettingsLocked(parser); 4348440ca3934dbb65743b357006e4a019e4351d479Svet Ganov } 435683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 436683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 437683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 4388440ca3934dbb65743b357006e4a019e4351d479Svet Ganov private void parseSettingsLocked(XmlPullParser parser) 439683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav throws IOException, XmlPullParserException { 440c9755bc4f2183d6d8e035e6a448b2c948dcd3a01Svet Ganov 441c9755bc4f2183d6d8e035e6a448b2c948dcd3a01Svet Ganov mVersion = Integer.parseInt(parser.getAttributeValue(null, ATTR_VERSION)); 442c9755bc4f2183d6d8e035e6a448b2c948dcd3a01Svet Ganov 4438440ca3934dbb65743b357006e4a019e4351d479Svet Ganov final int outerDepth = parser.getDepth(); 4448440ca3934dbb65743b357006e4a019e4351d479Svet Ganov int type; 4458440ca3934dbb65743b357006e4a019e4351d479Svet Ganov while ((type = parser.next()) != XmlPullParser.END_DOCUMENT 4468440ca3934dbb65743b357006e4a019e4351d479Svet Ganov && (type != XmlPullParser.END_TAG || parser.getDepth() > outerDepth)) { 4478440ca3934dbb65743b357006e4a019e4351d479Svet Ganov if (type == XmlPullParser.END_TAG || type == XmlPullParser.TEXT) { 4488440ca3934dbb65743b357006e4a019e4351d479Svet Ganov continue; 4498440ca3934dbb65743b357006e4a019e4351d479Svet Ganov } 450683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 451c9755bc4f2183d6d8e035e6a448b2c948dcd3a01Svet Ganov String tagName = parser.getName(); 452c9755bc4f2183d6d8e035e6a448b2c948dcd3a01Svet Ganov if (tagName.equals(TAG_SETTING)) { 453c9755bc4f2183d6d8e035e6a448b2c948dcd3a01Svet Ganov String id = parser.getAttributeValue(null, ATTR_ID); 454c9755bc4f2183d6d8e035e6a448b2c948dcd3a01Svet Ganov String name = parser.getAttributeValue(null, ATTR_NAME); 455c9755bc4f2183d6d8e035e6a448b2c948dcd3a01Svet Ganov String value = parser.getAttributeValue(null, ATTR_VALUE); 456c9755bc4f2183d6d8e035e6a448b2c948dcd3a01Svet Ganov String packageName = parser.getAttributeValue(null, ATTR_PACKAGE); 457c9755bc4f2183d6d8e035e6a448b2c948dcd3a01Svet Ganov mSettings.put(name, new Setting(name, unpackValue(value), 458c9755bc4f2183d6d8e035e6a448b2c948dcd3a01Svet Ganov unpackValue(packageName), id)); 459683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 460c9755bc4f2183d6d8e035e6a448b2c948dcd3a01Svet Ganov if (DEBUG_PERSISTENCE) { 461c9755bc4f2183d6d8e035e6a448b2c948dcd3a01Svet Ganov Slog.i(LOG_TAG, "[RESTORED] " + name + "=" + value); 462c9755bc4f2183d6d8e035e6a448b2c948dcd3a01Svet Ganov } 463683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 464683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 465683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 466683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 467683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav private final class MyHandler extends Handler { 468683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav public static final int MSG_PERSIST_SETTINGS = 1; 469683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 470683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav public MyHandler() { 471e1519582ab3010a132d4c4f1fa5cc92fad7cbc39Svetoslav Ganov super(BackgroundThread.getHandler().getLooper()); 472683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 473683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 474683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav @Override 475683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav public void handleMessage(Message message) { 476683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav switch (message.what) { 477683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav case MSG_PERSIST_SETTINGS: { 478683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav Runnable callback = (Runnable) message.obj; 479683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav doWriteState(); 480683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav if (callback != null) { 481683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav callback.run(); 482683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 483683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 484683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav break; 485683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 486683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 487683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 488683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 489683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav private static String packValue(String value) { 490683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav if (value == null) { 491683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav return NULL_VALUE; 492683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 493683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav return value; 494683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 495683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 496683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav private static String unpackValue(String value) { 497683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav if (NULL_VALUE.equals(value)) { 498683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav return null; 499683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 500683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav return value; 501683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 502683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 503b505ccc90667ad69a1b122f025a415a3b2aee6afSvetoslav public final class Setting { 504683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav private String name; 505683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav private String value; 506683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav private String packageName; 507683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav private String id; 508683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 509683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav public Setting(String name, String value, String packageName) { 510b505ccc90667ad69a1b122f025a415a3b2aee6afSvetoslav init(name, value, packageName, String.valueOf(mNextId++)); 511683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 512683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 513683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav public Setting(String name, String value, String packageName, String id) { 514b505ccc90667ad69a1b122f025a415a3b2aee6afSvetoslav mNextId = Math.max(mNextId, Long.valueOf(id) + 1); 515b505ccc90667ad69a1b122f025a415a3b2aee6afSvetoslav init(name, value, packageName, id); 516683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 517683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 518683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav private void init(String name, String value, String packageName, String id) { 519683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav this.name = name; 520683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav this.value = value; 521683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav this.packageName = packageName; 522683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav this.id = id; 523683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 524683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 525683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav public String getName() { 526683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav return name; 527683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 528683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 529683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav public String getValue() { 530683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav return value; 531683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 532683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 533683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav public String getPackageName() { 534683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav return packageName; 535683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 536683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 537683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav public String getId() { 538683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav return id; 539683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 540683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 541683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav public boolean update(String value, String packageName) { 542683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav if (Objects.equal(value, this.value)) { 543683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav return false; 544683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 545683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav this.value = value; 546683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav this.packageName = packageName; 547b505ccc90667ad69a1b122f025a415a3b2aee6afSvetoslav this.id = String.valueOf(mNextId++); 548683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav return true; 549683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 550683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 551683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav} 552