in pkg/metrics/gcm.go [238:244]
func (r *gcmNodeRecorder) RecordNodeConditions(ctx context.Context, labels []map[string]string) {
ts := []*monitoringpb.TimeSeries{}
for _, clabel := range labels {
ts = append(ts, r.p.intGaugeTimeSeries(MetricNodeCondition, clabel, 1))
}
r.p.writeTimeSeries(ctx, ts...)
}