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metrics: allow label_strategy to be implemented as api

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I use this exporter as an api, and I need to implement another
custom label strategy. Purpose being to habe business logic in
those labels (datacenter, ...).

Because the interface is private, this can not be implemented
elsewhere. This commit makes it public.

Signed-off-by: Arthur Gautier <baloo@gandi.net>
This commit is contained in:
Arthur Gautier 2018-08-09 06:43:29 +00:00
parent bf73cd8309
commit e570048463
4 changed files with 8 additions and 8 deletions
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4
metrics/default_label_strategy.go
View File

@ -7,11 +7,11 @@ import (
type DefaultLabelStrategy struct {
}
func (*DefaultLabelStrategy) labelNames() []string {
func (*DefaultLabelStrategy) LabelNames() []string {
return []string{"name", "proto", "ip_version"}
}
func (*DefaultLabelStrategy) labelValues(p *protocol.Protocol) []string {
func (*DefaultLabelStrategy) LabelValues(p *protocol.Protocol) []string {
return []string{p.Name, protoString(p), p.IpVersion}
}

4
metrics/generic_exporter.go
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@ -43,7 +43,7 @@ func NewGenericProtocolMetricExporter(prefix string, newNaming bool, labelStrate
}
func (m *GenericProtocolMetricExporter) initDesc(prefix string, newNaming bool) {
labels := m.labelStrategy.labelNames()
labels := m.labelStrategy.LabelNames()
m.upDesc = prometheus.NewDesc(prefix+"_up", "Protocol is up", labels, nil)
if newNaming {
@ -111,7 +111,7 @@ func (m *GenericProtocolMetricExporter) Describe(ch chan<- *prometheus.Desc) {
}
func (m *GenericProtocolMetricExporter) Export(p *protocol.Protocol, ch chan<- prometheus.Metric) {
l := m.labelStrategy.labelValues(p)
l := m.labelStrategy.LabelValues(p)
ch <- prometheus.MustNewConstMetric(m.upDesc, prometheus.GaugeValue, float64(p.Up), l...)
ch <- prometheus.MustNewConstMetric(m.importCountDesc, prometheus.GaugeValue, float64(p.Imported), l...)
ch <- prometheus.MustNewConstMetric(m.exportCountDesc, prometheus.GaugeValue, float64(p.Exported), l...)

4
metrics/label_strategy.go
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@ -3,6 +3,6 @@ package metrics
import "github.com/czerwonk/bird_exporter/protocol"
type LabelStrategy interface {
labelNames() []string
labelValues(p *protocol.Protocol) []string
LabelNames() []string
LabelValues(p *protocol.Protocol) []string
}

4
metrics/legacy_label_strategy.go
View File

@ -5,10 +5,10 @@ import "github.com/czerwonk/bird_exporter/protocol"
type LegacyLabelStrategy struct {
}
func (*LegacyLabelStrategy) labelNames() []string {
func (*LegacyLabelStrategy) LabelNames() []string {
return []string{"name"}
}
func (*LegacyLabelStrategy) labelValues(p *protocol.Protocol) []string {
func (*LegacyLabelStrategy) LabelValues(p *protocol.Protocol) []string {
return []string{p.Name}
}