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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 #ifndef NOS_APP_CLIENT_H
     18 #define NOS_APP_CLIENT_H
     19 
     20 #include <cstdint>
     21 #include <vector>
     22 
     23 #include <nos/NuggetClientInterface.h>
     24 
     25 namespace nos {
     26 
     27 /**
     28  * Client to communicate with an app running on Nugget.
     29  */
     30 class AppClient {
     31 public:
     32     /**
     33      * Create a client for an app with the given ID that communicates with
     34      * Nugget through the given NuggetClient.
     35      *
     36      * @param client Client for Nugget.
     37      * @param appId  ID of the target app.
     38      */
     39     AppClient(NuggetClientInterface& client, uint32_t appId)
     40             : _client(client), _appId(appId) {}
     41 
     42     /**
     43      * Call the app.
     44      *
     45      * @param arg      Argument to pass to the app.
     46      * @param request  Data to send to the app.
     47      * @param response Buffer to receive data from the app.
     48      */
     49     uint32_t Call(uint16_t arg, const std::vector<uint8_t>& request,
     50                   std::vector<uint8_t>* response) {
     51         return _client.CallApp(_appId, arg, request, response);
     52     }
     53 
     54 
     55 private:
     56     NuggetClientInterface& _client;
     57     uint32_t _appId;
     58 };
     59 
     60 } // namespace nos
     61 
     62 #endif // NOS_APP_CLIENT_H
     63