CVII Tech Stack

The Technology Stack development is one of three main tracks of  the Common Vehicle Interface Initiative

Goal of this activity:

   Find/Develop/Define attractive technology solutions that can be used with the industry-common model for data+services.

The term Technology Stack is used to describe all software that is related to the transfer and use of data and services that adhere to the common model(s). 

Examples:

Initial Brainstorm, implementation ideas

Which technologies come immediately to mind?

• VSS-to-MQTT client
  • Steps: 
    • Complete the draft mapping document to a full definition of message formats, etc.
    • Implementation, (with lots of code reuse)
  • Access control solution for MQTT?
    • Certificate based?
      • Q: Is there a way to apply VISS access control method on MQTT?
  • Best Practices for MQTT security?

• Investigation point:  VISSv2 with MQTT as "transport" - is there a possible compatibility?
• General (MQTT and other):  Binary data representation to optimize compared to VISS-JSON transport.
  • ...use also as variant encoding in VISS?
  • ...use as independent protocol (not part of VISS spec)
• AUTOSAR Adaptive compatibility
  • SOME/IP is important so we cannot ignore it.
  • DDS also.
  • (However, ARA:COM abstracts the technolgies.  For AUTOSAR systems, generating ARA:COM XML format is enough, the rest follows.  For non-AUTOSAR systems that are going to communicate with AUTOSAR systems, however, something that implements the concrete chosen protocol is needed. 
    • Previous work:  Franca IDL → Common API for SOME/IP and vSomeIP, and Franca IDL ↔ AUTOSAR XML converter)
  • Opinion:  SOME/IP is used in a very static way – an alternative might be desirable.
  • (AUTOSAR) RESTful services (not HTTP, rather stateless principle, get, set etc.) → Only discussions currently, no drive?
    • How is this concrete protocol defined?
    • Bosch might be willing to work on this.
• Protobuf conversion → Main page
  (because it is used and preferred by SENSORiS, but is also generally popular, and there was a recent vspec2proto converter proposal in vss-tools)

VSC to code generation

• Code generation - general stubs/proxies (C++ and other)

A lot of communication related technologies were investigated in the Generic Protocol Evaluation project during 2019.
A set of reference links are here : List of relevant technologies

MQTT-tool

Notes

AUTOSAR

Current tool chain   

(RED is not existing or not yet clearly defined).  (The rest exists already)

Notes

Going via Franca  is complicated...   →  VSS/VSC to AUTOSAR directly makes sense 

Direct approach for AUTOSAR