1 /* 2 * Copyright (C) 2016 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 17 package android.backup.app; 18 19 import android.app.backup.BackupAgent; 20 import android.app.backup.BackupDataInput; 21 import android.app.backup.BackupDataOutput; 22 import android.app.backup.FullBackupDataOutput; 23 import android.os.ParcelFileDescriptor; 24 import android.util.Log; 25 26 import java.io.File; 27 import java.io.FileInputStream; 28 import java.io.IOException; 29 30 /* 31 * Key Value Backup agent for Backup CTS App. 32 * 33 * Logs callbacks into logcat. 34 */ 35 public class KeyValueBackupAgent extends BackupAgent { 36 37 @Override onCreate()38 public void onCreate() { 39 Log.d(MainActivity.TAG, "onCreate"); 40 } 41 42 @Override onBackup(ParcelFileDescriptor oldState, BackupDataOutput data, ParcelFileDescriptor newState)43 public void onBackup(ParcelFileDescriptor oldState, BackupDataOutput data, 44 ParcelFileDescriptor newState) throws IOException { 45 Log.d(MainActivity.TAG, "Backup requested, quota is " + data.getQuota()); 46 47 // Always backup the entire file 48 File testFile = new File(getFilesDir(), MainActivity.FILE_NAME); 49 Log.d(MainActivity.TAG, "Writing " + testFile.length()); 50 51 data.writeEntityHeader(MainActivity.FILE_NAME, (int) testFile.length()); 52 byte[] buffer = new byte[4096]; 53 try (FileInputStream input = new FileInputStream(testFile)) { 54 int read; 55 while ((read = input.read(buffer)) >= 0) { 56 data.writeEntityData(buffer, read); 57 } 58 } 59 } 60 61 @Override onRestore(BackupDataInput data, int appVersionCode, ParcelFileDescriptor newState)62 public void onRestore(BackupDataInput data, int appVersionCode, 63 ParcelFileDescriptor newState) throws IOException { 64 Log.d(MainActivity.TAG, "Restore requested"); 65 } 66 67 @Override onRestoreFile(ParcelFileDescriptor data, long size, File destination, int type, long mode, long mtime)68 public void onRestoreFile(ParcelFileDescriptor data, long size, 69 File destination, int type, long mode, long mtime) throws IOException { 70 throw new IllegalStateException("unexpected onRestoreFile"); 71 } 72 73 @Override onFullBackup(FullBackupDataOutput data)74 public void onFullBackup(FullBackupDataOutput data) throws IOException { 75 throw new IllegalStateException("unexpected onFullBackup"); 76 } 77 78 @Override onQuotaExceeded(long backupDataBytes, long quotaBytes)79 public void onQuotaExceeded(long backupDataBytes, long quotaBytes) { 80 Log.d(MainActivity.TAG, "Quota exceeded!"); 81 } 82 83 @Override onRestoreFinished()84 public void onRestoreFinished() { 85 Log.d(MainActivity.TAG, "onRestoreFinished"); 86 } 87 88 @Override onDestroy()89 public void onDestroy() { 90 Log.d(MainActivity.TAG, "onDestroy"); 91 } 92 93 } 94