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pkg/textparse: allocate single string per metric

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This commit is contained in:
Fabian Reinartz 2017-01-16 17:24:00 +01:00
parent 157e698958
commit db48726a6b
1 changed files with 9 additions and 6 deletions
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15
pkg/textparse/parse.go
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@ -73,18 +73,21 @@ func (p *Parser) Err() error {
} }
func (p *Parser) Metric(l *labels.Labels) { func (p *Parser) Metric(l *labels.Labels) {
// Allocate the full immutable string immediately, so we just
// have to create references on it below.
s := string(p.l.b[p.l.mstart:p.l.mend])
*l = append(*l, labels.Label{ *l = append(*l, labels.Label{
Name: labels.MetricName, Name: labels.MetricName,
Value: string(p.l.b[p.l.mstart:p.l.offsets[0]]), Value: s[:p.l.offsets[0]-p.l.mstart],
}) })
for i := 1; i < len(p.l.offsets); i += 3 { for i := 1; i < len(p.l.offsets); i += 3 {
a, b, c := p.l.offsets[i], p.l.offsets[i+1], p.l.offsets[i+2] a := p.l.offsets[i] - p.l.mstart
b := p.l.offsets[i+1] - p.l.mstart
c := p.l.offsets[i+2] - p.l.mstart
*l = append(*l, labels.Label{ *l = append(*l, labels.Label{Name: s[a:b], Value: s[b+2 : c]})
Name: string(p.l.b[a:b]),
Value: string(p.l.b[b+2 : c]),
})
} }
sort.Sort((*l)[1:]) sort.Sort((*l)[1:])