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Soundcheck can emit events to the backstage events plugin.

​
Configuration

To enable events add the following configuration to your soundcheck config: 
soundcheck:
  events:
    enabled: true
Make sure you are also running the most recent version of @spotify/backstage-plugin-soundcheck-node, as this package includes typing for the events.

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Event Types

There are currently two types of events supported, CheckStatusChangeEvent and CertificationChangeEvent.

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CheckStatusChangeEvent

This event is emitted when a check status changes, for example if a check status goes from failed to passed. Example Payload: 
eventPayload: {
  checkId: 'check-1',
  entityRef: 'component:default/test-1',
  state: 'passed',
  timestampMs: 1743777961,
  previousState: 'failed',
  scope: 'default'
},
topic: 'soundcheck-check-status-change',
If there was no prior check status, the event’s previousState field will be undefined. To use this event you can subscribe to it via events service: 
import { EventsService } from '@backstage/plugin-events-node';
import {
  CHECK_STATUS_CHANGE_TOPIC,
  CheckStatusChangeEvent,
} from '@spotify/backstage-plugin-soundcheck-node';

const subscribeToEvents = (events: EventsService) => {
  events.subscribe({
    id: 'test-sub',
    topics: [CHECK_STATUS_CHANGE_TOPIC],
    onEvent: async params => {
      // handle event
    },
  });
}
//...
subscribeToEvents(eventsService);

​
CertificationStatusChangeEvent

This event is emitted when a certification state changes, for example if a certification for a level goes from failed to passed. Example Payload: 
eventPayload: {
  trackId: 'track-1',
  entityRef: 'component:default/test-1',
  state: 'passed',
  cumulativeState: 'passed',
  levelOrdinal: 1,
  timestampMs: 1743777961,
  previousState: 'failed',
  scope: 'default',
},
topic: 'soundcheck-certification-change',
If there was no prior certification status, the event’s previousState field will be undefined. To use this event you can subscribe to it via events service: 
import { EventsService } from '@backstage/plugin-events-node';
import {
  CERTIFICATION_CHANGE_TOPIC,
  CertificationChangeEvent,
} from '@spotify/backstage-plugin-soundcheck-node';

const subscribeToEvents = (events: EventsService) => {
  events.subscribe({
    id: 'test-sub',
    topics: [CERTIFICATION_CHANGE_TOPIC],
    onEvent: async params => {
      // handle event
    },
  });
}
//...
subscribeToEvents(eventsService);