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Implementation roadmap

  • milestone 1 - Spring GENIVI Virtual Tech Summit (12-14 May)
  • milestone 2 - internal milestone (early Q3 - July ?)
  • milestone 3 - Fall All Member Meeting, Leipzig, Germany (last week of October)
  • milestone 4 - CES 2021 (January 2021)

Communication framework architecture

This page lists the different components and tasks to be completed for the architecture discussed on the Vehicle data exchange protocols page. The table references to the following diagram, with components that are considered in scope for the PoC highlighted with green color.

Components 


Vehicle


     

Definitions:

StateStorage and VSSFeeder is expected to be combined into one component in the implementation.

SignalStoreIF : Done by reading/writing sqlite database transactions, and using the notification feature to notify components that update occurred.
StateStorage:   Essentially implemented by sqlite instance
SignalFeedIF:    This is an internal implementation detail now since StateStorage/VSSFeeder is essentially one program


                    OEM Cloud 

ValueStoreIF:   ?
ValueQueryIF:  ?


Interface details


Description of work

Apache License is more preferred by participants.

#ComponentWork(green star) Software Components / Implementation details (PoC)Software Components / Implementation for Production Systems
(star) (WIP, future)		Owner
1In-vehicle
State storage
(laptop simulator)
  • Custom code + in-memory database (+ persistence) + connection to feeder
  • Either locally cached during uptime of system or
  • Stored and indexed in a database to allow access to historical data
    • Selection of database
    • Implementation of database schema

CCS-106 - Getting issue details... STATUS

  • Custom control code (Python or C++)
  • + sqlite binding, OK for PoC

CCS-107 - Getting issue details... STATUS



  • Custom code

CCS-108 - Getting issue details... STATUS

Keith

CCS-109 - Getting issue details... STATUS


2

In-vehicle

VSS2 translation (a.k.a. VSS feeder)
(laptop simulator)

  • Implementation of SOME/IP client?
  • or simple simulator
  • or Vehicle Driving Simulator (LG?  OpenDS? or GENIVI GitHub version?)
    • = set up simulator, make it drive around track, get list of available signals, write code to convert signals to VSS...
    • Signals are fed over DDS to AutoWare or Apollo autonomous driving stacks.
    • Sim needs a high-end graphics machine
  • Look if VSI or VSD should play a part

CCS-110 - Getting issue details... STATUS

  • Custom code, feeding simple simulated data

then (future) run full vehicle driving simulator

CCS-111 - Getting issue details... STATUS


Keith

CCS-112 - Getting issue details... STATUS

3

In-vehicle

Data Package

  • Collecting VSS2 data into snapshots and bundles according to Value measurement formats
  • Presenting data packages to the Data server
  • Possibly closely related to the State storage schema

CCS-113 - Getting issue details... STATUS

Protocol defined within the CCS project

Start with results of Apache NiFi track
to fulfil this need.

CCS-114 - Getting issue details... STATUS

Future development. No support currently to transfer a Data Package in W3C Gen2

CCS-115 - Getting issue details... STATUS

Gunnar
4

In-vehicle

Data server
(laptop simulator)

  • Data server implementation for W3C Gen2
    • Reference implementation exists in GitHub MEAE-GOT
    • Ulf can work together with someone how to connect to an existing API of "state storage"
    • (also talk to Kuksa project - VISS+REST server)

CCS-116 - Getting issue details... STATUS

Use server directory from W3C_VehicleSignalInterfaceImpl

CCS-117 - Getting issue details... STATUS



Ulf

CCS-154 - Getting issue details... STATUS

5

OEM Cloud

Vehicle client

  • W3C Gen2 protocol (VISS Websocket Pub/Sub)
  • Options:
    • Investigate Sanjeev's work for reusable client
    • Curl script
    • Custom code + HTTP library (e.g. written in python) custom code + libcurl binding
    • Client directory from MEAE-GOT/W3C ?
    • No clear answer.  Depends on use-case.  What is the rate of data for example?
    • Sanjeev: It would make sense to write also client in Go.
  • This program shall also store the data into the data lake program (or directly into the database used as data lake)

CCS-118 - Getting issue details... STATUS

Written in Go, some similar code as in W3C Gen 2 reference server

CCS-119 - Getting issue details... STATUS

(tick)  Demo includes this function already..  In ccs-client repo.
Reads data from data server in vehicle and writes it into the database.





CCS-120 - Getting issue details... STATUS

Ulf
6

OEM Cloud

VSS2 database

  • Selection of libraries and database
    • Define database schema → Start with Ulf's proposal for DB schema

CCS-121 - Getting issue details... STATUS

Gunnar: I have some experience setting up Postgres, so this is a reasonable option.
Ulf: A Go library to support Postgres exists, so this is only a small rewrite.

  • Custom control code (Python or C++)
  • + Sqlite binding, OK for PoC, or other database such as postgresql.

CCS-122 - Getting issue details... STATUS

(tick) Implemented in In ccs-client repo.

In production more likely to be an object store database instead of a RDBS.

Sanjeev looking at Apache ecosystem and Hortonworks/Cloudera platform capabilities.

CCS-124 - Getting issue details... STATUS


Ulf

CCS-125 - Getting issue details... STATUS


7

OEM Cloud

Identity management

  • Implementation of end-user login and authentication using OpenID
    • Lots of candidates.  Responsible implementer should propose a good alternative.

CCS-126 - Getting issue details... STATUS

Later. programming language preference could be influenced by the programmer



--
8

OEM Cloud

Access management

  • Implementation of authorization between end-user and 3rd party application or Neutral Server using OAuth2

CCS-127 - Getting issue details... STATUS

Later. programming language preference could be influenced by the programmer



--
9

OEM Cloud

Resource Management
 = Data server API

  • Implementation of basic API management
  • Resource Mgmt is the ExVe naming.
  • Implementation of a GraphQL API using the VSS2 schema 

CCS-128 - Getting issue details... STATUS

GraphQL → Apache Apollo?

CCS-129 - Getting issue details... STATUS

Located in vss-graphql repo

  • (tick) Has one schema.
  • (error) Does not have tool to regenerate schema.
  • (tick) Has Apollo server in docker



(Alexander Domin)


CCS-130 - Getting issue details... STATUS

10

Neutral Server

Data Marketplace

  • Separate instance that consumes the OEM Cloud OAuth2 and GraphQL APIs
    • We could implement a very simplistic neutral server using the published API of High Mobility, but an open implementation.
    • Security, consent and other complicates things.   Leave those details out.

CCS-131 - Getting issue details... STATUS

CCS-132 - Getting issue details... STATUS

Repo link?

In vss-graphql-client-swift repository

(tick) Has programming framework/example (in SWIFT) to access data via graphql.

  • This could show a way for 3rd party applications to access the OEM/GraphQL interface directly but possibly a more limited REST-API is more realistic for 3rd part app access

(blue star) TODO: Expose a neutral-server API to third party applications.



Kevin
113rd Party Application
  • Example applications exist on High Mobility's GitHub
  • One instance that consumes the Neutral Server/Data Marketplace APIs
    • Use an example application from HM
    • For example an app that just shows the data (written in Node.js)
  • One instance that consumes the OEM Cloud OAuth2 and GraphQL APIs
    • Modify the application to use the OEM API directly

CCS-133 - Getting issue details... STATUS

CCS-134 - Getting issue details... STATUS

(blue star)  Example/standard API work needed
The example apps are using High Mobility's API.

(blue star) Need discussion/definition of what the open API should be.

The API would be quite transparent if VSS is exposed directly, but the Neutral Server API might expose different functions also.

The apps could however be used with modification.


Kevin
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