Page History

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• Spring AMM sessions
• Central Data Service Playground
  • Status reports
    • Upstreaming Apache IoTDB support into WAII VISS Data Server
    • Apache IoTDB runtime configuration support
    • Online documentation
  • Continue discussion of Knowledge Layer Connector. One related aspect is the topic of schemas on the data layer side.
  • Roadmap/backlog/work package definition. What does AMM release look like?
  • Feeders
• AoB

Minutes:

• Central Data Service Playground
  • Status reports
    • Online documentation: Steve has merged Ulf's online documentation PR to add the Hugo setup. Next step is enabling the workflow to automatically build and publish any content.
    • Apache IoTDB state storage: Steve has added runtime configuration (where to find DB, what database path to use etc) support for the WAII IoTDB connector. It's available in his PR https://github.com/COVESA/cdsp/pull/20. He will send a PR upstream to WAII once its moved to its new home.
    • Realm state storage:
      • Arnaldo had questions about how best to handle the paradigm difference between the typically complex documentation schema used in Realm and the key/value pair schema of VISS/WAII. A second challenge is Realm has C++, but no Go client/binding so how best to interface to WAII get/set methods in Go?
      • Discussion about possible approaches:
        • Complex schema
          • Steve: Same problem exists I think for the JSON-schema to RDF connector for the knowledge layer. We've started with simple with key/value pairs in the store for maximum flexibility, but approaches will need to be found for more complex schema as we go along.
          • Swen: I saw this problem when working with Realm cases. We added accessor methods to our solutions to allow interfacing to other systems.
          • Discussion wondering how BMW VISS implementation had addressed the same issue. Arnaldo/Haonan could look for internal suggestions.
        • WAII connector
          • Steve showed the three WAII methods to be supported (init, get, set) which have straight forward parameters.
          • Two ideas suggested:
            • Use Go binding to other languages. Ulf had succesfully used a package that provided type conversions and binding for C.
            • If Realm has IPC support then it could be used form the Go methods. Ulf explains the Redis connector uses a unix socket.
    • Out of time to discuss Knowledge Layer Connector this week.

21st February 2024

Agenda:

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