Dashboard for version 29.0.0 adds unknwon JSON datasource

[kissifrot]

Hello @soulgalore ,

You recently updated page metrics' dashboard's JSON, but you added a new JSON API Datasource labeled DS_JSON_API.
But there seem to be no clue on how it is used.
Is a mistake or it misses associated documentation? 🙂

I'm available for more details is needed :)

[soulgalore]

Hi @kissifrot hmm that JSON is exported from Grafana, I wonder then if it's a bug in their exporter. Some time ago there was a similar bug when you manually needed to change it. Let me have a look, the JSON API datasource is used, but I think there's no documentation (I missed that). On dashboard.sitespeed.io the result is published to https://data.sitespeed.io/ so the URL for the datasource is https://data.sitespeed.io/. Using that, you can get meta data about each run. Let me add some documentation.

[soulgalore]

Ok, the Grafana instance should include these three plugins: grafana-piechart-panel,marcusolsson-json-datasource,marcusolsson-dynamictext-panel. Then you need to point the JSON data source to where you push the result. I've been using that for a couple of years internally and at Wikimedia, but I forgot to include it now when it was released in the documentation. Gonna update the documentation the coming days.

[kissifrot]

Well I'm a bit lost TBH, where do we configure where data is pushed?
Until now I didn't see mentions of this new data source 🤔

Sorry for the dumb questions 😅

[soulgalore]

Ah I see, no sorry I should have explained that better: where do you push the result (the HTML/video/screenshots) from the sitespeed.io test? Do you push it to S3, or a server? If you just test it out locally you can just add a dummy URL as endpoint for the JSON plugin.