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metrics: correctly register all metrics (#1335)

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After initial startup, see if prometheus is loaded and if so, register
our metrics with it.
Stop doing the init() func and just use the sync.Once so we don't double
registrer our metrics.
This commit is contained in:
Miek Gieben 2017-12-27 15:48:14 +00:00 • committed by GitHub
parent 5ac42ed5c2
commit 90dd4bbd45
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8 changed files with 76 additions and 45 deletions
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11
plugin/proxy/metrics.go
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@ -25,15 +25,6 @@ var (
}, []string{"proto", "proxy_proto", "family", "to"})
)
// OnStartupMetrics sets up the metrics on startup. This is done for all proxy protocols.
func OnStartupMetrics() error {
metricsOnce.Do(func() {
prometheus.MustRegister(RequestCount)
prometheus.MustRegister(RequestDuration)
})
return nil
}
// familyToString returns the string form of either 1, or 2. Returns
// empty string is not a known family
func familyToString(f int) string {
@ -46,4 +37,4 @@ func familyToString(f int) string {
return ""
}
var metricsOnce sync.Once
var once sync.Once