Reactive Grafana variables in plugin

[nulluser]

Currently in my custom plugin I am using getTemplateSrv in order to grab dashboard variables from my grafana dashboard. However when I have a query variable when that variable updates that change isnt reflected in the plugin and therefore functionality relying on that variable isnt updating.

Currently I use this to grab variables,
getTemplateSrv().replace('variablename')
This works for the inital state of the varible, however as the query in the variable runs it doesnt update on the plugin side.

I have implementing polling in order to make sure I also have the current variable however this solution doesnt scale and is a bad solution. are there any other methods to get grafana variables that always are updated with the current value?

[mikhailvolkov]

@nulluser You can use EventBus to catch the variables updates and other events:

How to subscribe to Grafana application events

@rajatghosh52 Panel A should do eventBus.publish(), and Panel B should subscribe to this event. Marcus is not working with Grafana anymore.

[nulluser]

Worked like a charm, tysm.

[mikhailvolkov]

@holdenmalcolm

Data source plugins have access to query variables and can retrieve data directly from Grafana’s data sources.

Can you add more details on how data source plugin can retrieve data from the Grafana data source?