[Backlogmanager] [FIWARE-JIRA] (HELP-18358) [fiware-stackoverflow] FIWARE - Orion Context Broker as Context Provider

[Fernando Lopez (JIRA)]

     [ https://jira.fiware.org/browse/HELP-18358?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Fernando Lopez reassigned HELP-18358:
-------------------------------------

    Assignee: Ken Zangelin

> [fiware-stackoverflow] FIWARE - Orion Context Broker as Context Provider
> ------------------------------------------------------------------------
>
>                 Key: HELP-18358
>                 URL: https://jira.fiware.org/browse/HELP-18358
>             Project: Help-Desk
>          Issue Type: Monitor
>          Components: FIWARE-TECH-HELP
>            Reporter: Backlog Manager
>            Assignee: Ken Zangelin
>              Labels: fiware, fiware-orion
>
> Created question in FIWARE Q/A platform on 22-09-2021 at 16:09
> {color: red}Please, ANSWER this question AT{color} https://stackoverflow.com/questions/69288105/fiware-orion-context-broker-as-context-provider
> +Question:+
> FIWARE - Orion Context Broker as Context Provider
> +Description:+
> I'm having a hard time to understand how context providers work in the Orion Context Broker.
> I followed the examples in the step by step guide written by Json Fox. However, I still do not exactly get what happens in the background and how the context broker exactly creates the POST from the registration. Here is what I am trying to do:
> I do have a WeatherStation that provides sensor data for a neighborhood.
> {
>   "id": "urn:ngsi-ld:WeatherStation:001",
>   "type": "Device:WeatherStation",
>   "temperature": {
>     "type": "Number",
>     "value": 20.5,
>     "metadata": {}
>   },
>   "windspeed": {
>     "type": "Number",
>     "value": 60.0,
>     "metadata": {}
>   }
> }
> Now I like the WeatherStation to be a context provider for all buildings.
> {
>   "id": "urn:ngsi-ld:building:001",
>   "type": "Building"
> }
> Here is the registration that I try to use.
> {
>   "id": null,
>   "description": "Random Weather Conditions",
>   "provider": {
>     "http": {
>       "url": "http://localhost:1026/v2"
>     },
>     "supportedForwardingMode": "all"
>   },
>   "dataProvided": {
>     "entities": [
>       {
>         "id": "urn:ngsi-ld:building:001",
>         "idPattern": null,
>         "type": "Building",
>         "typePattern": null
>       }
>     ],
>     "attrs": [
>       "temperature",
>       "windspeed"
>     ],
>     "expression": null
>   },
>   "status": "active",
>   "expires": null,
>   "forwardingInformation": null
> }
> The context broker accepts both entities and the registration without any error.
> Since I have a multi-tenant setup I use one fiware_service for the complete neighborhood but every building would later have a seperate fiware_servicepath. Hence, the weatherstation has a different servicepath than the building. Although I also tried to put them both in the same path.
> I also tried to vary the url of the registration but with no success.
> Is this scenario actually possible with the current implementation? It would be very useful
> Is there any example for this including also the headers?
> I know that I could simply use reference but that would put more work on the user.
> Thanks for any help on this.



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