How to update a data source query from the panel display options

[franc]

• What Grafana version and what operating system are you using?
  Grafana v8.1.2 , Linux ubuntu 20.04

• What are you trying to achieve?
  PlugIn development: Can I prebuild an influx query from the panel options with preset pull down menu items and have it populated to the data section raw queries? Is this possible?

• How are you trying to achieve it?
  Not sure if this is possible with the framework.

• What happened?
  Designing a new plugin for specific influx queries.

• What did you expect to happen?

• Can you copy/paste the configuration(s) that you are having problems with?

• Did you receive any errors in the Grafana UI or in related logs? If so, please tell us exactly what they were.

• Did you follow any online instructions? If so, what is the URL?
  Following the plugin development instructions from the docs.

[marcusolsson]

First off, since panels are designed to not depend on any specific data source, this is not a well supported use case. I think accessing the data source from your panel options is going to be tricky, and updating the query model would be even trickier.

That being said, here are a few tips that might help you (though I could also be leading you on a wild goose chase):

• You can access a specific data source instance by using the getBackendSrv() function to list all data sources.
• Within the render method of a panel, you can get the id of the data source that was used for the specific query, but I’m not sure how you’d update the jsonData model with that approach.
• If it’s a custom data source that you controlled, you could add a method on the data source instance, and then invoke it from the panel. For a built-in data source like InfluxDB, that’s likely not going to work though.