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Option for not to export go runtime and http handler metrcis #20

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Option for not to export go runtime and http handler metrcis #20

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12 changes: 11 additions & 1 deletion main.go
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Original file line number Diff line number Diff line change
Expand Up @@ -11,6 +11,7 @@ import (
"time"

"github.com/prometheus/client_golang/prometheus"
"github.com/prometheus/client_golang/prometheus/promhttp"
)

var (
Expand Down Expand Up @@ -43,6 +44,7 @@ type startParams struct {
NoExit bool
Test bool
Raw bool
Nogo bool
}

type varnishstatParams struct {
Expand Down Expand Up @@ -84,6 +86,7 @@ func init() {
flag.BoolVar(&StartParams.Verbose, "verbose", StartParams.Verbose, "Verbose logging.")
flag.BoolVar(&StartParams.Test, "test", StartParams.Test, "Test varnishstat availability, prints available metrics and exits.")
flag.BoolVar(&StartParams.Raw, "raw", StartParams.Test, "Raw stdout logging without timestamps.")
flag.BoolVar(&StartParams.Nogo, "no-go-metrics", StartParams.Nogo, "Don't export go runtime and http handler metrics")

flag.Parse()

Expand Down Expand Up @@ -158,7 +161,14 @@ func main() {
// Start serving
logInfo("Server starting on %s with metrics path %s", StartParams.ListenAddress, StartParams.Path)

prometheus.MustRegister(PrometheusExporter)
if StartParams.Nogo {
registry := prometheus.NewRegistry()
registry.Register(PrometheusExporter)
handler := promhttp.HandlerFor(registry, promhttp.HandlerOpts{})
http.Handle(StartParams.Path, handler)
} else {
prometheus.MustRegister(PrometheusExporter)
}

if StartParams.Path != "/" {
http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
Expand Down