in internal/tel/v2/tel.go [291:299]
func (m *metricRecorder) RecordDialCount(ctx context.Context, a Attributes) {
m.mDialCount.Add(ctx, 1,
metric.WithAttributeSet(attribute.NewSet(
attribute.String(connectorType, connectorTypeValue(a.UserAgent)),
attribute.String(authType, authTypeValue(a.IAMAuthN)),
attribute.Bool(isCacheHit, a.CacheHit),
attribute.String(status, a.DialStatus)),
))
}