How is the `/panels` endpoint supposed to work?

[amotl]

Hi there,

at ¹, I discovered that @fbeneventi used the add_panel_reader() routine on this recipe the other day. However, I haven't been able to figure out how this is supposed to work as I also wasn't able to find any reference in simple-json-datasource ².

What subsystem of Grafana would request this endpoint? I am feeling a bit silly on this and dearly hope that @linar-jether or @fbeneventi could shed some light on this.

With kind regards,
Andreas.

Footnotes

1. https://gist.github.com/fbeneventi/9264d8760f847ad5acf0a4bcdab8d87f#file-simple_python_datasource-py-L281 ↩

2. https://github.com/grafana/simple-json-datasource ↩

[amotl]

To answer myself, I was able to discover @linar-jether's introduction to that feature at ¹:

To serve HTML panels, use add_panel_reader(name, lambda query_str, ts_range: <html_content>) to register a function that returns a HTML string for a given query string and time range. To query it, use the AJAX Panel for Grafana.

It would be sweet to have an example in the repository demoing that feature.

Footnotes

1. https://gist.github.com/linar-jether/95ff412f9d19fdf5e51293eb0c09b850#gistcomment-2316794 ↩