Automate mapping table generation for plugins

Add plugin name in plugins.conf to enable the plugin
Mapping table will generate object for the respective plugin and register the service

grpc/server/CMakeLists.txt

@@ -69,6 +69,8 @@ target_link_libraries(dronecore_server
     dl
 )
 
+include(autogenerate_plugin_container.cmake)
+
 include_directories(
     ${Protobuf_INCLUDE_DIRS}
     ${GRPC_INCLUDE_DIRS}

grpc/server/autogenerate_plugin_container.cmake

@@ -0,0 +1,10 @@
+file(STRINGS ../proto/plugins.conf plugins_list)
+
+foreach(plugin ${plugins_list})
+    string(SUBSTRING ${plugin} 0 1 FIRST_LETTER)
+    string(TOUPPER ${FIRST_LETTER} FIRST_LETTER)
+    string(REGEX REPLACE "^.(.*)" "${FIRST_LETTER}\\1" class_name "${plugin}")
+    set(PLUGIN_MAP_APPEND_STRING "${PLUGIN_MAP_APPEND_STRING}    map[\"${plugin}\"] = &createInstances<${class_name}RPCImpl>;\n")
+endforeach()
+
+configure_file(dronecore_server.cpp.in dronecore_server.cpp)

grpc/server/dronecore_server.cpp → grpc/server/dronecore_server.cpp.in

@@ -47,14 +47,12 @@ void RunServer()
     DroneCoreRPCImpl service;
 
     map_type map;
-    map["action"] = &createInstances<ActionRPCImpl>;
-    map["mission"] = &createInstances<MissionRPCImpl>;
-    map["telemetry"] = &createInstances<TelemetryRPCImpl>;
-
     std::string plugin;
     std::fstream file;
     file.open("../proto/plugins.conf");
     std::vector<::grpc::Service *> list;
+${PLUGIN_MAP_APPEND_STRING}
+
     while (file >> plugin) {
         auto service_obj = map[plugin](&dc);
         list.push_back(service_obj);