Grafana events

Grafana uses an event bus to publish application events and notify different parts of Grafana when users interact with a chart. The Business Charts panel can react to these actions by subscribing to one or more events.

Note
Business Charts 5.0.0 lets you unsubscribe from events to avoid memory leaks by returning an extended result object.

Predefined events

A full list of events is available in the Grafana Crash Course.

To subscribe and unsubscribe from events, create an extended result object.

const subscription = context.grafana.eventBus.subscribe({ type: 'data-hover' }, () => {
  console.log('React to Data Hover')
})

return {
  version: 2,
  config: { notMerge: true },
  option: {},
  unsubscribe: () => {
    subscription.unsubscribe();
    console.log('Unsubscribed');
  }
}