1 /*
2  * Copyright (C) 2020 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 #pragma once
18 
19 #include <optional>
20 #include <string>
21 
22 class ServiceDescriptor {
23   public:
24     ServiceDescriptor(std::string name, std::string cmd);
25 
name()26     const char* name() const { return mName.c_str(); }
command()27     const char* command() const { return mCommandLine.c_str(); }
28 
IsAvailable()29     bool IsAvailable() const {
30         // TODO(egranata): how to validate this?
31         return true;
32     }
33 
34     struct OutputConsumer {
35         virtual void Write(char* ptr, size_t len) = 0;
36     };
37 
38     using Error = std::optional<std::string>;
39     // std::nullopt for success; an error descriptor otherwise
40     Error GetOutput(OutputConsumer* consumer) const;
41 
42   private:
43     std::string mName;
44     std::string mCommandLine;
45 };
46