Method Decode

expfmt/decode.go:158–178

Decode implements the Decoder interface.

(v *dto.MetricFamily)

// Decode implements the Decoder interface.
func (d *textDecoder) Decode(v *dto.MetricFamily) error {
	if d.err == nil {
		// Read all metrics in one shot.
		p := NewTextParser(d.s)
		d.fams, d.err = p.TextToMetricFamilies(d.r)
		// If we don't get an error, store io.EOF for the end.
		if d.err == nil {
			d.err = io.EOF
		}
	}
	// Pick off one MetricFamily per Decode until there's nothing left.
	for key, fam := range d.fams {
		v.Name = fam.Name
		v.Help = fam.Help
		v.Type = fam.Type
		v.Metric = fam.Metric
		delete(d.fams, key)
		return nil
	}
	return d.err
}

// SampleDecoder wraps a Decoder to extract samples from the metric families
// decoded by the wrapped Decoder.