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|
package main
import (
"fmt"
"log/slog"
"net/http"
logflag "github.com/prometheus/common/promslog/flag"
"gopkg.in/alecthomas/kingpin.v2"
"github.com/prometheus/common/promslog"
tkweb "github.com/prometheus/exporter-toolkit/web"
tkflag "github.com/prometheus/exporter-toolkit/web/kingpinflag"
)
var (
relabelMap = argRelabel(kingpin.Flag(
"relabel", "name=yaml.",
).Short('r'))
srcList = argSrcList(kingpin.Arg(
"sources", "Metric source.",
).Required())
logger *slog.Logger
)
func main() {
promslogConfig := &promslog.Config{}
logflag.AddFlags(kingpin.CommandLine, promslogConfig)
tkFlag := tkflag.AddFlags(kingpin.CommandLine, ":9199")
kingpin.CommandLine.HelpFlag.Short('h')
kingpin.Parse()
logger = promslog.New(promslogConfig)
parts, err := PartsFromArgs(*srcList, relabelMap)
if err != nil{
logger.Error(err.Error())
return
}
http.HandleFunc("/metrics", func(
w http.ResponseWriter, r *http.Request,
){
out, err := parts.Get()
if err != nil{
logger.Error(err.Error())
w.WriteHeader(500)
}
w.Header()["Content-Type"] = []string{"application/openmetrics-text"}
fmt.Fprint(w, out)
})
err = tkweb.ListenAndServe(&http.Server{}, tkFlag, logger)
if err != nil{
logger.Error(err.Error())
return
}
}
|
