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      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 
     17 package com.android.server.backup.fullbackup;
     18 
     19 import static com.android.server.backup.BackupManagerService.TAG;
     20 
     21 import android.app.backup.IFullBackupRestoreObserver;
     22 import android.os.RemoteException;
     23 import android.util.Slog;
     24 
     25 /**
     26  * Generic driver skeleton for full backup operations.
     27  */
     28 public abstract class FullBackupTask implements Runnable {
     29 
     30     IFullBackupRestoreObserver mObserver;
     31 
     32     FullBackupTask(IFullBackupRestoreObserver observer) {
     33         mObserver = observer;
     34     }
     35 
     36     // wrappers for observer use
     37     final void sendStartBackup() {
     38         if (mObserver != null) {
     39             try {
     40                 mObserver.onStartBackup();
     41             } catch (RemoteException e) {
     42                 Slog.w(TAG, "full backup observer went away: startBackup");
     43                 mObserver = null;
     44             }
     45         }
     46     }
     47 
     48     final void sendOnBackupPackage(String name) {
     49         if (mObserver != null) {
     50             try {
     51                 // TODO: use a more user-friendly name string
     52                 mObserver.onBackupPackage(name);
     53             } catch (RemoteException e) {
     54                 Slog.w(TAG, "full backup observer went away: backupPackage");
     55                 mObserver = null;
     56             }
     57         }
     58     }
     59 
     60     final void sendEndBackup() {
     61         if (mObserver != null) {
     62             try {
     63                 mObserver.onEndBackup();
     64             } catch (RemoteException e) {
     65                 Slog.w(TAG, "full backup observer went away: endBackup");
     66                 mObserver = null;
     67             }
     68         }
     69     }
     70 }
     71