mirror of
https://github.com/prometheus-community/windows_exporter.git
synced 2026-02-22 20:56:36 +00:00
committed by
Martin Lindhe
parent
bda7dd18cf
commit
df0db7a54f
12
vendor/github.com/prometheus/common/model/labels.go
generated
vendored
12
vendor/github.com/prometheus/common/model/labels.go
generated
vendored
@@ -80,14 +80,18 @@ const (
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QuantileLabel = "quantile"
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)
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// LabelNameRE is a regular expression matching valid label names.
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// LabelNameRE is a regular expression matching valid label names. Note that the
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// IsValid method of LabelName performs the same check but faster than a match
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// with this regular expression.
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var LabelNameRE = regexp.MustCompile("^[a-zA-Z_][a-zA-Z0-9_]*$")
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// A LabelName is a key for a LabelSet or Metric. It has a value associated
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// therewith.
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type LabelName string
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// IsValid is true iff the label name matches the pattern of LabelNameRE.
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// IsValid is true iff the label name matches the pattern of LabelNameRE. This
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// method, however, does not use LabelNameRE for the check but a much faster
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// hardcoded implementation.
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func (ln LabelName) IsValid() bool {
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if len(ln) == 0 {
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return false
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@@ -106,7 +110,7 @@ func (ln *LabelName) UnmarshalYAML(unmarshal func(interface{}) error) error {
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if err := unmarshal(&s); err != nil {
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return err
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}
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if !LabelNameRE.MatchString(s) {
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if !LabelName(s).IsValid() {
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return fmt.Errorf("%q is not a valid label name", s)
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}
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*ln = LabelName(s)
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@@ -119,7 +123,7 @@ func (ln *LabelName) UnmarshalJSON(b []byte) error {
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if err := json.Unmarshal(b, &s); err != nil {
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return err
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}
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if !LabelNameRE.MatchString(s) {
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if !LabelName(s).IsValid() {
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return fmt.Errorf("%q is not a valid label name", s)
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}
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*ln = LabelName(s)
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