grafana/pkg/metrics/common.go

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package metrics
import "github.com/grafana/grafana/pkg/log"
type MetricMeta struct {
tags map[string]string
name string
}
func NewMetricMeta(name string, tagStrings []string) *MetricMeta {
if len(tagStrings)%2 != 0 {
log.Fatal(3, "Metrics: tags array is missing value for key, %v", tagStrings)
}
tags := make(map[string]string)
for i := 0; i < len(tagStrings); i += 2 {
tags[tagStrings[i]] = tagStrings[i+1]
}
return &MetricMeta{
tags: tags,
name: name,
}
}
func (m *MetricMeta) Name() string {
return m.name
}
func (m *MetricMeta) Tags() map[string]string {
return m.tags
}
func (m *MetricMeta) StringifyTags() string {
if len(m.tags) == 0 {
return ""
}
str := ""
for key, value := range m.tags {
str += "." + key + "_" + value
}
return str
}
type Metric interface {
Name() string
Tags() map[string]string
StringifyTags() string
Snapshot() Metric
Clear()
}