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Comment: 17th July minutes

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Historical note: the minutes for the previous project, the CVII Tech Stack, can be found here: CVII Technology Stack meeting notes

17th July 2024

Agenda:

  • Playground Kanban "stand-up meeting": In-progress task status, major new items
  • Fall  AMM: https://wiki.covesa.global/x/WgBSBg. We need to firm up plans as the end of month is approaching. This is in part also a discussion of the group roadmap towards the AMM.
  • AoB
    • Christian: Simulators


Minutes:

  • Playground Kanban 
    • Christian expects to make greater progress on Knowledge connector next week
    • Steve is working on an example for the IoTDB data processing PR. He's got ok from RemotiveLabs to use some of their data.
    • Steve has been contacted by Halim from GM. He is checking the uProtocol Simulator status
    • Knowledge Layer Connector
      • Christian asks about connecting to IoTDB in the Playground
        • During development phase can simply connect to the iotdb-service container running the IoTDB server either from host or another containers as you wish.
        • For deployment we will need to discuss how to integrate the connector, but for example it could be a knowledge-layer image that becomes a service in the playground compose.
  • Fall AMM
    • BMW internal meeting was pushed back. Christian should have news next week.
    • Steve: Chicken and egg on workshops. Holding workshop on playground internals will depend on participation else it might make more sense to join the verticals (commerical, safety, insurance) and discuss use-cases and playground use.
  • Simulator
    • Christian: we have been thinking internally about connecting simulators to the Playground, including the information layer and I wanted to discuss this publically.
    • Discussion:
      • Various simulators will be needed.
      • It's agreed its helpful if only minor glue code is needed to make connections. For that to be possible appropriate documentation is needed for interface integration.
      • Some 'playback' will be as simple as ETL style operations of loading data sets into the DB
      • Standalone collection of data sets reusable across examples is a need.

10th July 2024

Agenda:


Minutes:

  • Kanban meeting:
    • Waiting on GM to return from break for uProtocol simulator update
    • IoTDB Data Processing functions: Steve has updated the PR to add online documentation for the changes.
      • Next is Grafana, plus an example
    • Knowledge Connector: Christian explained updates to the PR, e.g. DB router changes.
      • Discussion in the DB Schema section about challenges of maintaining a single source of truth when relating data models as is typically needed with knowledge layer.
      • For the connector itself it seems ok if it uses a particular approach to communicate the wider idea of using Rules based reasoning. That is internal to the blackbox and other approaches could be used in implementation.
  • DB Schema:
  • Fall AMM
  • Summer holidays:
    • Ulf: off next week and 1 after. Probably some further break later in summer.
    • Sven: 3 week break coming up.
    • Christian: Long break from 8th Aug.
    • Steve: will take 1-2 week break, probably in Aug, to match when others are off.


3rd July 2024

Agenda:

  • Playground Kanban "stand-up meeting": In-progress task status, major new items
  • Docker: Brief summary of my PR above.
  • DB Schema generation: I had some discussion with Gunnar in CVI about this. Basically keeping the meta-data for it with VSS as a layer, rather than dislocated in for example a template language config file. I think ultimately I need to write a fuller proposal that can be discussed, but it perhaps warrants a short discussion if people have input to help form the ideas.
  • Fall AMM: deadline for talks is end of the month. We need to discuss what we want to do, including the possible extra technical day.
  • AoB

Minutes:

  • Kanban stand-up meeting:
    • Knowledge Layer Connector, Christian: Started on skeleten PoC DB router in information layer
    • IoTDB Data Processing, Steve: A WIP PR has been added https://github.com/COVESA/cdsp/pull/52 which adds the optional IoTDB Data Quality Library to the Playground IoTDB docker image and configures IoTDB for access from Grafana.
    • uProtocol Simulator: waiting for update from GM
  • DB Schema Generation:
    • Discussion of providing a mechanism for DB Schema generation for VSS nodes. This would accelerate users ability to more quickly get started with the Playground as it could automate the generation of all nodes.
    • Steve and Christian think this could be useful. Christian in addition raises a similar use-case for the knowledge layer, e.g. SHACL generation. There was some conversion to SHACL in the past.
    • Idea brainstorming:
      • Rough requirements:
        • Input: VSS vspec (a reduced vspec could be input if only a few nodes are required)
        • Generation:
          • Template language + config (config is the description needed to match VSS to the DB)
        • Output: schema for DB X
          • Example: Series of lines to create schema for each VSS node e.g CREATE timeseries.Vehicle.Speed (datatype=INT, compression=X, encoding=Y, meta-data=Z)
      • Steve: In discussion with Gunnar in CVI it was considered that this mapping meta-data could be held in a VSS layer/overlay (closed to the source) rather than in an isolated stand-along config file. If the existing VSS overlay mechanism did not support it, then evolving VSS overlays to be something closer to IFEX layer mechanism could.
    • VSS layer:
      • vehicle.speed DB meta-data=> data-type=INT, compression=squashy, encoding=super-encoding, meta-data="some attribute"
    • Generation / vss-tools:
      • Christian asks about doing this in vss-tools.
      • vss-tools has good set of meta-model functions now, which means generator largely just needs to contemplate output side so could have:
        • vspec2iotdb
        • vspec2realm
        • vspec2shaql
  • Fall AMM
    • COVESA wants technical session proposals by end of the Month.
    • So we need to contemplate:
      • Weds/Thurs Main Conf: Technical Sessions
        • e.g. Outreach etc.
      • Tues Smaller Conf: Workshops
        • e.g. Playground internals
    • Steve will put up the usual page for ideas
    • Paul: COVESA page here All Member Meeting Planning

26th June 2024

Agenda:

  • Playground Kanban "stand-up meeting": In-progress task status, major new items
  • Docker: I have been working on integrating the IoTDB Data Quality library and Grafana. That raises some questions about configuration of Docker containers and the source for the parts we integrate. That may be worth a discussion to get some feedback. Particularly from the BMW team who may be doing similar work at the moment.
  • @Swen Schisler (Endava) mentioned last week wanting to discuss some of his proposal to the CVI group
  • AoB

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