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package main
import (
"flag"
"github.com/go-logr/logr"
"github.com/go-logr/zapr"
"github.com/phin1x/cups-exporter/pkg"
"github.com/prometheus/client_golang/prometheus"
"github.com/prometheus/client_golang/prometheus/promhttp"
"go.uber.org/zap"
"net/http"
"os"
)
type options struct {
Address string
MetricsPath string
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CupsUri string
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}
func main ( ) {
log := getLogger ( )
opts := options { }
flag . StringVar ( & opts . Address , "web.listen-address" , ":9628" , "address on which to expose metrics and web interface" )
flag . StringVar ( & opts . MetricsPath , "web.telemetry-path" , "/metrics" , "path under which to expose metrics" )
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flag . StringVar ( & opts . CupsUri , "cups.uri" , "https://localhost:631" , "uri under which the cups server is available, including username and password it required" )
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flag . Parse ( )
log . Info ( "starting cups exporter" )
exporter , err := pkg . NewExporter ( opts . CupsUri , log )
if err != nil {
log . Error ( err , "failed to create the exporter" )
os . Exit ( 1 )
}
prometheus . MustRegister ( exporter )
http . Handle ( opts . MetricsPath , promhttp . Handler ( ) )
http . HandleFunc ( "/" , func ( w http . ResponseWriter , r * http . Request ) {
w . Write ( [ ] byte ( ` < html >
< head > < title > Cups Exporter < / title > < / head >
< body >
< h1 > Cups Exporter < / h1 >
< p > < a href = "` + opts.MetricsPath + `" > Metrics < / a > < / p >
< / body >
< / html > ` ) )
} )
log . Info ( "listening on " + opts . Address )
log . Error ( http . ListenAndServe ( opts . Address , nil ) , "failed to start the http server" )
}
func getLogger ( ) logr . Logger {
zapLog , err := zap . NewDevelopment ( )
if err != nil {
panic ( err )
}
return zapr . NewLogger ( zapLog )
}
