Incident: Log ignored superfluous events

Author: yhabteab

internal/incident/incident.go

@@ -298,8 +298,8 @@ func (i *Incident) processSeverityChangedEvent(ctx context.Context, tx *sqlx.Tx,
 	oldSeverity := i.Severity
 	newSeverity := ev.Severity
 	if oldSeverity == newSeverity {
-		err := fmt.Errorf("%w: %s state event from source %d", event.ErrSuperfluousStateChange, ev.Severity.String(), ev.SourceId)
-		return err
+		i.logger.Debugw("Ignoring superfluous severity change event", zap.Int64("source_id", ev.SourceId), zap.Stringer("event", ev))
+		return event.ErrSuperfluousStateChange
 	}
 
 	i.logger.Infof("Incident severity changed from %s to %s", oldSeverity.String(), newSeverity.String())