1 /* 2 * Copyright (C) 2017 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License 15 */ 16 package com.android.dialer.backup; 17 18 import android.app.backup.BackupDataInput; 19 import android.app.backup.BackupDataOutput; 20 import android.os.ParcelFileDescriptor; 21 import android.support.annotation.NonNull; 22 import android.support.annotation.VisibleForTesting; 23 import android.util.ArrayMap; 24 import com.android.dialer.common.Assert; 25 import com.android.dialer.common.LogUtil; 26 import com.android.dialer.logging.DialerImpression; 27 import com.android.dialer.logging.Logger; 28 import com.google.android.libraries.backup.BackupKeyPredicate; 29 import com.google.android.libraries.backup.BackupKeyPredicates; 30 import com.google.android.libraries.backup.PersistentBackupAgentHelper; 31 import java.io.IOException; 32 import java.util.Map; 33 34 /** Implementation of Key/Value Backup that powers Dialer's backup and restore. */ 35 public class DialerPersistentBackupAgent extends PersistentBackupAgentHelper { 36 37 private static final String[] BACKUP_NAMED_SHARED_PREFS = { 38 "com.google.android.dialer_preferences", "com.google.android.dialer", "com.android.dialer" 39 }; 40 41 @NonNull private final String[] sharedPreferencesToBackup; 42 43 @VisibleForTesting(otherwise = VisibleForTesting.NONE) 44 DialerPersistentBackupAgent(@NonNull String[] sharedPrefs) { 45 this.sharedPreferencesToBackup = Assert.isNotNull(sharedPrefs); 46 Logger.get(this).logImpression(DialerImpression.Type.BACKUP_KEY_VALUE_BACKUP_AGENT_CONSTRUCTOR); 47 } 48 49 public DialerPersistentBackupAgent() { 50 this(BACKUP_NAMED_SHARED_PREFS); 51 } 52 53 @Override 54 public void onRestore(BackupDataInput data, int appVersionCode, ParcelFileDescriptor stateFile) 55 throws IOException { 56 Logger.get(this).logImpression(DialerImpression.Type.BACKUP_KEY_VALUE_ON_RESTORE); 57 LogUtil.i("DialerPersistentBackupAgent.onRestore", "restore from version: " + appVersionCode); 58 super.onRestore(data, appVersionCode, stateFile); 59 } 60 61 @Override 62 public void onBackup( 63 ParcelFileDescriptor oldState, BackupDataOutput data, ParcelFileDescriptor newState) 64 throws IOException { 65 Logger.get(this).logImpression(DialerImpression.Type.BACKUP_KEY_VALUE_ON_BACKUP); 66 LogUtil.i("DialerPersistentBackupAgent.onBackup", "onBackup being performed"); 67 super.onBackup(oldState, data, newState); 68 } 69 70 @Override 71 public Map<String, BackupKeyPredicate> getBackupSpecification() { 72 Logger.get(this).logImpression(DialerImpression.Type.BACKUP_KEY_VALUE_GET_BACKUP_SPECIFICATION); 73 LogUtil.i( 74 "DialerPersistentBackupAgent.getBackupSpecification", 75 "number of files being backed up: " + sharedPreferencesToBackup.length); 76 77 Map<String, BackupKeyPredicate> arrayMap = new ArrayMap<>(); 78 for (String fileName : sharedPreferencesToBackup) { 79 LogUtil.i("DialerPersistentBackupAgent.getBackupSpecification", "arrayMap.put: " + fileName); 80 arrayMap.put(fileName, BackupKeyPredicates.alwaysTrue()); 81 } 82 83 return arrayMap; 84 } 85 86 @Override 87 public void onRestoreFinished() { 88 Logger.get(this).logImpression(DialerImpression.Type.BACKUP_KEY_VALUE_ON_RESTORE_FINISHED); 89 super.onRestoreFinished(); 90 } 91 } 92
