content: /*
   * Copyright (C) 2015 The Android Open Source Project
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package com.android.server.backup;
  
  import android.app.INotificationManager;
  import android.app.backup.BlobBackupHelper;
  import android.os.ServiceManager;
  import android.util.Log;
  import android.util.Slog;
  
  public class NotificationBackupHelper extends BlobBackupHelper {
      static final String TAG = "NotifBackupHelper";   // must be < 23 chars
      static final boolean DEBUG = Log.isLoggable(TAG, Log.DEBUG);
  
      // Current version of the blob schema
      static final int BLOB_VERSION = 1;
  
      // Key under which the payload blob is stored
      static final String KEY_NOTIFICATIONS = "notifications";
  
      private final int mUserId;
  
      public NotificationBackupHelper(int userId) {
          super(BLOB_VERSION, KEY_NOTIFICATIONS);
          mUserId = userId;
      }
  
      @Override
      protected byte[] getBackupPayload(String key) {
          byte[] newPayload = null;
          if (KEY_NOTIFICATIONS.equals(key)) {
              try {
                  INotificationManager nm = INotificationManager.Stub.asInterface(
                          ServiceManager.getService("notification"));
                  newPayload = nm.getBackupPayload(mUserId);
              } catch (Exception e) {
                  // Treat as no data
                  Slog.e(TAG, "Couldn't communicate with notification manager");
                  newPayload = null;
              }
          }
          return newPayload;
      }
  
      @Override
      protected void applyRestoredPayload(String key, byte[] payload) {
          if (DEBUG) {
              Slog.v(TAG, "Got restore of " + key);
          }
  
          if (KEY_NOTIFICATIONS.equals(key)) {
              try {
                  INotificationManager nm = INotificationManager.Stub.asInterface(
                          ServiceManager.getService("notification"));
                  nm.applyRestore(payload, mUserId);
              } catch (Exception e) {
                  Slog.e(TAG, "Couldn't communicate with notification manager");
              }
          }
      }
  
  }
  