SettingsState.java revision ba0821ed3bc2536be02df1ae850619b111cbd6f4
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; 41683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslavimport java.util.ArrayList; 42683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslavimport java.util.List; 43683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 44683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav/** 45683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav * This class contains the state for one type of settings. It is responsible 46683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav * for saving the state asynchronously to an XML file after a mutation and 47683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav * loading the from an XML file on construction. 48683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav * <p> 49683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav * This class uses the same lock as the settings provider to ensure that 50683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav * multiple changes made by the settings provider, e,g, upgrade, bulk insert, 51683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav * etc, are atomically persisted since the asynchronous persistence is using 52683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav * the same lock to grab the current state to write to disk. 53683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav * </p> 54683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav */ 55683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslavfinal class SettingsState { 56683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav private static final boolean DEBUG = false; 57683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav private static final boolean DEBUG_PERSISTENCE = false; 58683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 59683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav private static final String LOG_TAG = "SettingsState"; 60683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 61683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav private static final long WRITE_SETTINGS_DELAY_MILLIS = 200; 62683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav private static final long MAX_WRITE_SETTINGS_DELAY_MILLIS = 2000; 63683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 64683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav public static final int MAX_BYTES_PER_APP_PACKAGE_UNLIMITED = -1; 65683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav public static final int MAX_BYTES_PER_APP_PACKAGE_LIMITED = 20000; 66683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 67683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav public static final String SYSTEM_PACKAGE_NAME = "android"; 68683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 69683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav public static final int VERSION_UNDEFINED = -1; 70683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 71683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav private static final String TAG_SETTINGS = "settings"; 72683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav private static final String TAG_SETTING = "setting"; 73683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav private static final String ATTR_PACKAGE = "package"; 74683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 75683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav private static final String ATTR_VERSION = "version"; 76683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav private static final String ATTR_ID = "id"; 77683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav private static final String ATTR_NAME = "name"; 78683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav private static final String ATTR_VALUE = "value"; 79683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 80683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav private static final String NULL_VALUE = "null"; 81683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 82683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav private final Object mLock; 83683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 84683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav private final Handler mHandler = new MyHandler(); 85683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 86683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav @GuardedBy("mLock") 87683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav private final ArrayMap<String, Setting> mSettings = new ArrayMap<>(); 88683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 89683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav @GuardedBy("mLock") 90683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav private final ArrayMap<String, Integer> mPackageToMemoryUsage; 91683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 92683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav @GuardedBy("mLock") 93683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav private final int mMaxBytesPerAppPackage; 94683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 95683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav @GuardedBy("mLock") 96683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav private final File mStatePersistFile; 97683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 98683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav public final int mKey; 99683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 100683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav @GuardedBy("mLock") 101683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav private int mVersion = VERSION_UNDEFINED; 102683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 103683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav @GuardedBy("mLock") 104683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav private long mLastNotWrittenMutationTimeMillis; 105683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 106683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav @GuardedBy("mLock") 107683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav private boolean mDirty; 108683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 109683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav @GuardedBy("mLock") 110683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav private boolean mWriteScheduled; 111683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 112b505ccc90667ad69a1b122f025a415a3b2aee6afSvetoslav @GuardedBy("mLock") 113b505ccc90667ad69a1b122f025a415a3b2aee6afSvetoslav private long mNextId; 114b505ccc90667ad69a1b122f025a415a3b2aee6afSvetoslav 115683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav public SettingsState(Object lock, File file, int key, int maxBytesPerAppPackage) { 116683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav // It is important that we use the same lock as the settings provider 117683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav // to ensure multiple mutations on this state are atomicaly persisted 118683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav // as the async persistence should be blocked while we make changes. 119683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav mLock = lock; 120683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav mStatePersistFile = file; 121683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav mKey = key; 122683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav if (maxBytesPerAppPackage == MAX_BYTES_PER_APP_PACKAGE_LIMITED) { 123683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav mMaxBytesPerAppPackage = maxBytesPerAppPackage; 124683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav mPackageToMemoryUsage = new ArrayMap<>(); 125683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } else { 126683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav mMaxBytesPerAppPackage = maxBytesPerAppPackage; 127683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav mPackageToMemoryUsage = null; 128683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 129683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav synchronized (mLock) { 130683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav readStateSyncLocked(); 131683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 132683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 133683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 134683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav // The settings provider must hold its lock when calling here. 135683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav public int getVersionLocked() { 136683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav return mVersion; 137683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 138683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 139683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav // The settings provider must hold its lock when calling here. 140683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav public void setVersionLocked(int version) { 141683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav if (version == mVersion) { 142683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav return; 143683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 144683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav mVersion = version; 145683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 146683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav scheduleWriteIfNeededLocked(); 147683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 148683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 149683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav // The settings provider must hold its lock when calling here. 150683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav public void onPackageRemovedLocked(String packageName) { 151683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav boolean removedSomething = false; 152683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 153683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav final int settingCount = mSettings.size(); 154683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav for (int i = settingCount - 1; i >= 0; i--) { 155683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav String name = mSettings.keyAt(i); 156e1519582ab3010a132d4c4f1fa5cc92fad7cbc39Svetoslav Ganov // Settings defined by use are never dropped. 157683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav if (Settings.System.PUBLIC_SETTINGS.contains(name) 158683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav || Settings.System.PRIVATE_SETTINGS.contains(name)) { 159683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav continue; 160683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 161683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav Setting setting = mSettings.valueAt(i); 162683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav if (packageName.equals(setting.packageName)) { 163683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav mSettings.removeAt(i); 164683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav removedSomething = true; 165683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 166683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 167683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 168683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav if (removedSomething) { 169683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav scheduleWriteIfNeededLocked(); 170683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 171683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 172683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 173683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav // The settings provider must hold its lock when calling here. 174683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav public List<String> getSettingNamesLocked() { 175683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav ArrayList<String> names = new ArrayList<>(); 176683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav final int settingsCount = mSettings.size(); 177683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav for (int i = 0; i < settingsCount; i++) { 178683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav String name = mSettings.keyAt(i); 179683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav names.add(name); 180683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 181683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav return names; 182683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 183683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 184683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav // The settings provider must hold its lock when calling here. 185683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav public Setting getSettingLocked(String name) { 186683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav if (TextUtils.isEmpty(name)) { 187683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav return null; 188683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 189683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav return mSettings.get(name); 190683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 191683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 192683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav // The settings provider must hold its lock when calling here. 193683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav public boolean updateSettingLocked(String name, String value, String packageName) { 194683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav if (!hasSettingLocked(name)) { 195683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav return false; 196683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 197683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 198683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav return insertSettingLocked(name, value, packageName); 199683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 200683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 201683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav // The settings provider must hold its lock when calling here. 202683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav public boolean insertSettingLocked(String name, String value, String packageName) { 203683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav if (TextUtils.isEmpty(name)) { 204683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav return false; 205683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 206683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 207683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav Setting oldState = mSettings.get(name); 208683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav String oldValue = (oldState != null) ? oldState.value : null; 209683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 210683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav if (oldState != null) { 211683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav if (!oldState.update(value, packageName)) { 212683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav return false; 213683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 214683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } else { 215683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav Setting state = new Setting(name, value, packageName); 216683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav mSettings.put(name, state); 217683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 218683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 219683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav updateMemoryUsagePerPackageLocked(packageName, oldValue, value); 220683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 221683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav scheduleWriteIfNeededLocked(); 222683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 223683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav return true; 224683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 225683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 226683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav // The settings provider must hold its lock when calling here. 227683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav public void persistSyncLocked() { 228683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav mHandler.removeMessages(MyHandler.MSG_PERSIST_SETTINGS); 229683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav doWriteState(); 230683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 231683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 232683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav // The settings provider must hold its lock when calling here. 233683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav public boolean deleteSettingLocked(String name) { 234683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav if (TextUtils.isEmpty(name) || !hasSettingLocked(name)) { 235683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav return false; 236683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 237683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 238683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav Setting oldState = mSettings.remove(name); 239683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 240683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav updateMemoryUsagePerPackageLocked(oldState.packageName, oldState.value, null); 241683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 242683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav scheduleWriteIfNeededLocked(); 243683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 244683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav return true; 245683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 246683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 247683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav // The settings provider must hold its lock when calling here. 248683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav public void destroyLocked(Runnable callback) { 249683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav mHandler.removeMessages(MyHandler.MSG_PERSIST_SETTINGS); 250683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav if (callback != null) { 251683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav if (mDirty) { 252683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav // Do it without a delay. 253683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav mHandler.obtainMessage(MyHandler.MSG_PERSIST_SETTINGS, 254683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav callback).sendToTarget(); 255683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav return; 256683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 257683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav callback.run(); 258683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 259683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 260683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 261683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav private void updateMemoryUsagePerPackageLocked(String packageName, String oldValue, 262683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav String newValue) { 263683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav if (mMaxBytesPerAppPackage == MAX_BYTES_PER_APP_PACKAGE_UNLIMITED) { 264683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav return; 265683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 266683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 267683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav if (SYSTEM_PACKAGE_NAME.equals(packageName)) { 268683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav return; 269683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 270683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 271683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav final int oldValueSize = (oldValue != null) ? oldValue.length() : 0; 272683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav final int newValueSize = (newValue != null) ? newValue.length() : 0; 273683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav final int deltaSize = newValueSize - oldValueSize; 274683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 275683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav Integer currentSize = mPackageToMemoryUsage.get(packageName); 276683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav final int newSize = Math.max((currentSize != null) 277683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav ? currentSize + deltaSize : deltaSize, 0); 278683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 279683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav if (newSize > mMaxBytesPerAppPackage) { 280683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav throw new IllegalStateException("You are adding too many system settings. " 2812849465ee19febd5135cb6ab8cb548a3c8ac6a24Svetoslav + "You should stop using system settings for app specific data" 2822849465ee19febd5135cb6ab8cb548a3c8ac6a24Svetoslav + " package: " + packageName); 283683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 284683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 285683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav if (DEBUG) { 286683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav Slog.i(LOG_TAG, "Settings for package: " + packageName 287683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav + " size: " + newSize + " bytes."); 288683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 289683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 290683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav mPackageToMemoryUsage.put(packageName, newSize); 291683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 292683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 293683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav private boolean hasSettingLocked(String name) { 294683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav return mSettings.indexOfKey(name) >= 0; 295683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 296683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 297683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav private void scheduleWriteIfNeededLocked() { 298683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav // If dirty then we have a write already scheduled. 299683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav if (!mDirty) { 300683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav mDirty = true; 301683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav writeStateAsyncLocked(); 302683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 303683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 304683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 305683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav private void writeStateAsyncLocked() { 306683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav final long currentTimeMillis = SystemClock.uptimeMillis(); 307683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 308683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav if (mWriteScheduled) { 309683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav mHandler.removeMessages(MyHandler.MSG_PERSIST_SETTINGS); 310683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 311683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav // If enough time passed, write without holding off anymore. 312683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav final long timeSinceLastNotWrittenMutationMillis = currentTimeMillis 313683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav - mLastNotWrittenMutationTimeMillis; 314683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav if (timeSinceLastNotWrittenMutationMillis >= MAX_WRITE_SETTINGS_DELAY_MILLIS) { 315683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav mHandler.obtainMessage(MyHandler.MSG_PERSIST_SETTINGS).sendToTarget(); 316683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav return; 317683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 318683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 319683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav // Hold off a bit more as settings are frequently changing. 320683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav final long maxDelayMillis = Math.max(mLastNotWrittenMutationTimeMillis 321683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav + MAX_WRITE_SETTINGS_DELAY_MILLIS - currentTimeMillis, 0); 322683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav final long writeDelayMillis = Math.min(WRITE_SETTINGS_DELAY_MILLIS, maxDelayMillis); 323683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 324683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav Message message = mHandler.obtainMessage(MyHandler.MSG_PERSIST_SETTINGS); 325683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav mHandler.sendMessageDelayed(message, writeDelayMillis); 326683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } else { 327683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav mLastNotWrittenMutationTimeMillis = currentTimeMillis; 328683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav Message message = mHandler.obtainMessage(MyHandler.MSG_PERSIST_SETTINGS); 329683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav mHandler.sendMessageDelayed(message, WRITE_SETTINGS_DELAY_MILLIS); 330683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav mWriteScheduled = true; 331683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 332683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 333683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 334683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav private void doWriteState() { 335683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav if (DEBUG_PERSISTENCE) { 336683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav Slog.i(LOG_TAG, "[PERSIST START]"); 337683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 338683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 339683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav AtomicFile destination = new AtomicFile(mStatePersistFile); 340683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 341683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav final int version; 342683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav final ArrayMap<String, Setting> settings; 343683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 344683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav synchronized (mLock) { 345683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav version = mVersion; 346683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav settings = new ArrayMap<>(mSettings); 347683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav mDirty = false; 348683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav mWriteScheduled = false; 349683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 350683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 351683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav FileOutputStream out = null; 352683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav try { 353683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav out = destination.startWrite(); 354683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 355683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav XmlSerializer serializer = Xml.newSerializer(); 356683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav serializer.setOutput(out, "utf-8"); 357c3f56c3cb51d486e581c26876e2ae1368f91e2caSvetoslav serializer.setFeature("http://xmlpull.org/v1/doc/features.html#indent-output", true); 358683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav serializer.startDocument(null, true); 359683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav serializer.startTag(null, TAG_SETTINGS); 360683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav serializer.attribute(null, ATTR_VERSION, String.valueOf(version)); 361683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 362683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav final int settingCount = settings.size(); 363683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav for (int i = 0; i < settingCount; i++) { 364683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav Setting setting = settings.valueAt(i); 365683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 366683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav serializer.startTag(null, TAG_SETTING); 367683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav serializer.attribute(null, ATTR_ID, setting.getId()); 368683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav serializer.attribute(null, ATTR_NAME, setting.getName()); 369683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav serializer.attribute(null, ATTR_VALUE, packValue(setting.getValue())); 370683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav serializer.attribute(null, ATTR_PACKAGE, packValue(setting.getPackageName())); 371683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav serializer.endTag(null, TAG_SETTING); 372683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 373683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav if (DEBUG_PERSISTENCE) { 374683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav Slog.i(LOG_TAG, "[PERSISTED]" + setting.getName() + "=" + setting.getValue()); 375683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 376683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 377683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 378683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav serializer.endTag(null, TAG_SETTINGS); 379683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav serializer.endDocument(); 380683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav destination.finishWrite(out); 381683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 382683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav if (DEBUG_PERSISTENCE) { 383683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav Slog.i(LOG_TAG, "[PERSIST END]"); 384683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 385683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 386ba0821ed3bc2536be02df1ae850619b111cbd6f4Svet Ganov // Any error while writing is fatal. 387ba0821ed3bc2536be02df1ae850619b111cbd6f4Svet Ganov } catch (Throwable t) { 388ba0821ed3bc2536be02df1ae850619b111cbd6f4Svet Ganov Slog.wtf(LOG_TAG, "Failed to write settings, restoring backup", t); 389683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav destination.failWrite(out); 390683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } finally { 391683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav IoUtils.closeQuietly(out); 392683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 393683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 394683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 395683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav private void readStateSyncLocked() { 396683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav FileInputStream in; 397683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav if (!mStatePersistFile.exists()) { 398683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav return; 399683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 400683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav try { 401683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav in = new FileInputStream(mStatePersistFile); 402683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } catch (FileNotFoundException fnfe) { 403683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav Slog.i(LOG_TAG, "No settings state"); 404683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav return; 405683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 406683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav try { 407683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav XmlPullParser parser = Xml.newPullParser(); 408683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav parser.setInput(in, null); 409683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav parseStateLocked(parser); 410ba0821ed3bc2536be02df1ae850619b111cbd6f4Svet Ganov 411ba0821ed3bc2536be02df1ae850619b111cbd6f4Svet Ganov // Any error while parsing is fatal. 412ba0821ed3bc2536be02df1ae850619b111cbd6f4Svet Ganov } catch (Throwable t) { 413683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav throw new IllegalStateException("Failed parsing settings file: " 414ba0821ed3bc2536be02df1ae850619b111cbd6f4Svet Ganov + mStatePersistFile , t); 415683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } finally { 416683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav IoUtils.closeQuietly(in); 417683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 418683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 419683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 420683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav private void parseStateLocked(XmlPullParser parser) 421683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav throws IOException, XmlPullParserException { 4228440ca3934dbb65743b357006e4a019e4351d479Svet Ganov final int outerDepth = parser.getDepth(); 4238440ca3934dbb65743b357006e4a019e4351d479Svet Ganov int type; 4248440ca3934dbb65743b357006e4a019e4351d479Svet Ganov while ((type = parser.next()) != XmlPullParser.END_DOCUMENT 4258440ca3934dbb65743b357006e4a019e4351d479Svet Ganov && (type != XmlPullParser.END_TAG || parser.getDepth() > outerDepth)) { 4268440ca3934dbb65743b357006e4a019e4351d479Svet Ganov if (type == XmlPullParser.END_TAG || type == XmlPullParser.TEXT) { 4278440ca3934dbb65743b357006e4a019e4351d479Svet Ganov continue; 4288440ca3934dbb65743b357006e4a019e4351d479Svet Ganov } 429683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 4308440ca3934dbb65743b357006e4a019e4351d479Svet Ganov String tagName = parser.getName(); 4318440ca3934dbb65743b357006e4a019e4351d479Svet Ganov if (tagName.equals(TAG_SETTINGS)) { 4328440ca3934dbb65743b357006e4a019e4351d479Svet Ganov parseSettingsLocked(parser); 4338440ca3934dbb65743b357006e4a019e4351d479Svet Ganov } 434683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 435683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 436683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 4378440ca3934dbb65743b357006e4a019e4351d479Svet Ganov private void parseSettingsLocked(XmlPullParser parser) 438683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav throws IOException, XmlPullParserException { 439c9755bc4f2183d6d8e035e6a448b2c948dcd3a01Svet Ganov 440c9755bc4f2183d6d8e035e6a448b2c948dcd3a01Svet Ganov mVersion = Integer.parseInt(parser.getAttributeValue(null, ATTR_VERSION)); 441c9755bc4f2183d6d8e035e6a448b2c948dcd3a01Svet Ganov 4428440ca3934dbb65743b357006e4a019e4351d479Svet Ganov final int outerDepth = parser.getDepth(); 4438440ca3934dbb65743b357006e4a019e4351d479Svet Ganov int type; 4448440ca3934dbb65743b357006e4a019e4351d479Svet Ganov while ((type = parser.next()) != XmlPullParser.END_DOCUMENT 4458440ca3934dbb65743b357006e4a019e4351d479Svet Ganov && (type != XmlPullParser.END_TAG || parser.getDepth() > outerDepth)) { 4468440ca3934dbb65743b357006e4a019e4351d479Svet Ganov if (type == XmlPullParser.END_TAG || type == XmlPullParser.TEXT) { 4478440ca3934dbb65743b357006e4a019e4351d479Svet Ganov continue; 4488440ca3934dbb65743b357006e4a019e4351d479Svet Ganov } 449683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 450c9755bc4f2183d6d8e035e6a448b2c948dcd3a01Svet Ganov String tagName = parser.getName(); 451c9755bc4f2183d6d8e035e6a448b2c948dcd3a01Svet Ganov if (tagName.equals(TAG_SETTING)) { 452c9755bc4f2183d6d8e035e6a448b2c948dcd3a01Svet Ganov String id = parser.getAttributeValue(null, ATTR_ID); 453c9755bc4f2183d6d8e035e6a448b2c948dcd3a01Svet Ganov String name = parser.getAttributeValue(null, ATTR_NAME); 454c9755bc4f2183d6d8e035e6a448b2c948dcd3a01Svet Ganov String value = parser.getAttributeValue(null, ATTR_VALUE); 455c9755bc4f2183d6d8e035e6a448b2c948dcd3a01Svet Ganov String packageName = parser.getAttributeValue(null, ATTR_PACKAGE); 456c9755bc4f2183d6d8e035e6a448b2c948dcd3a01Svet Ganov mSettings.put(name, new Setting(name, unpackValue(value), 457c9755bc4f2183d6d8e035e6a448b2c948dcd3a01Svet Ganov unpackValue(packageName), id)); 458683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 459c9755bc4f2183d6d8e035e6a448b2c948dcd3a01Svet Ganov if (DEBUG_PERSISTENCE) { 460c9755bc4f2183d6d8e035e6a448b2c948dcd3a01Svet Ganov Slog.i(LOG_TAG, "[RESTORED] " + name + "=" + value); 461c9755bc4f2183d6d8e035e6a448b2c948dcd3a01Svet Ganov } 462683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 463683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 464683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 465683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 466683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav private final class MyHandler extends Handler { 467683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav public static final int MSG_PERSIST_SETTINGS = 1; 468683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 469683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav public MyHandler() { 470e1519582ab3010a132d4c4f1fa5cc92fad7cbc39Svetoslav Ganov super(BackgroundThread.getHandler().getLooper()); 471683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 472683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 473683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav @Override 474683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav public void handleMessage(Message message) { 475683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav switch (message.what) { 476683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav case MSG_PERSIST_SETTINGS: { 477683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav Runnable callback = (Runnable) message.obj; 478683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav doWriteState(); 479683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav if (callback != null) { 480683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav callback.run(); 481683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 482683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 483683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav break; 484683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 485683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 486683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 487683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 488683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav private static String packValue(String value) { 489683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav if (value == null) { 490683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav return NULL_VALUE; 491683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 492683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav return value; 493683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 494683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 495683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav private static String unpackValue(String value) { 496683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav if (NULL_VALUE.equals(value)) { 497683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav return null; 498683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 499683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav return value; 500683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 501683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 502b505ccc90667ad69a1b122f025a415a3b2aee6afSvetoslav public final class Setting { 503683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav private String name; 504683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav private String value; 505683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav private String packageName; 506683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav private String id; 507683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 508683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav public Setting(String name, String value, String packageName) { 509b505ccc90667ad69a1b122f025a415a3b2aee6afSvetoslav init(name, value, packageName, String.valueOf(mNextId++)); 510683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 511683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 512683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav public Setting(String name, String value, String packageName, String id) { 513b505ccc90667ad69a1b122f025a415a3b2aee6afSvetoslav mNextId = Math.max(mNextId, Long.valueOf(id) + 1); 514b505ccc90667ad69a1b122f025a415a3b2aee6afSvetoslav init(name, value, packageName, id); 515683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 516683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 517683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav private void init(String name, String value, String packageName, String id) { 518683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav this.name = name; 519683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav this.value = value; 520683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav this.packageName = packageName; 521683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav this.id = id; 522683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 523683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 524683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav public String getName() { 525683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav return name; 526683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 527683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 528683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav public String getValue() { 529683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav return value; 530683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 531683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 532683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav public String getPackageName() { 533683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav return packageName; 534683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 535683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 536683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav public String getId() { 537683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav return id; 538683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 539683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav 540683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav public boolean update(String value, String packageName) { 541683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav if (Objects.equal(value, this.value)) { 542683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav return false; 543683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 544683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav this.value = value; 545683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav this.packageName = packageName; 546b505ccc90667ad69a1b122f025a415a3b2aee6afSvetoslav this.id = String.valueOf(mNextId++); 547683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav return true; 548683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 549683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav } 550683914bfb13908bf380a25258cd45bcf43f13dc9Svetoslav} 551