Grafana Events (EventBus)

Grafana uses an event bus to publish application events to notify different parts of Grafana when the user acts.

const subscription = eventBus.subscribe({ type: "data-hover" }, () => {
  console.log("Data hovered.");
});

return () => {
  subscription.unsubscribe();
};

Predefined Events

Event	Description
absolute-time	Called when the user selects an absolute time range on the dashboard.
annotation-event	Called when an annotation event occurs, such as when an annotation is created, updated, or deleted.
annotation-query-finished	Called when an annotation query has finished executing.
annotation-query-started	Called when an annotation query has started executing.
copy-panel	Called to copy a panel JSON into local storage.
dashboard-loaded	Called when a dashboard is loaded.
dashboard-saved	Called when a dashboard is saved.
data-hover	Hovering over Legend and data point when shared crosshair enabled.
data-hover-clear	Called when the user stops hovering over a data point on a panel when shared crosshair enabled.
data-select	Called when the user selects a data point on a panel.
datasource-updated-successfully	Called when a datasource is successfully updated.
panel-edit-finished	Called when the user finishes editing a panel.
panel-edit-started	Called When the user starts editing a panel.
refresh	Called when a dashboard is refreshed.
render	Called when a dashboard is rendered
shift-time	Called when the time shifts range on the dashboard.
theme-changed	Called when the theme settings change.
time-range-updated	Called when time range is updated.
variables-changed	Called when the variable values on the dashboard are changed.
variables-changed-in-url	Called when the variable values in the URL are changed.
variables-time-range-process-done	Called when the time range for variables in the dashboard is processed.
zoom-out	Called when use time range zoom out.

Panels interconnectivity in Grafana via EventBus

This article describes the possibility of using ECharts Instance, Grafana Events, and Extended Result for panel communication by sending and receiving events in Grafana.