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main.go
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main.go
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package main
import (
"flag"
"net/http"
"os"
"time"
"github.com/prometheus/client_golang/prometheus"
"github.com/prometheus/client_golang/prometheus/promhttp"
"github.com/rs/zerolog"
"github.com/rs/zerolog/log"
)
func main() {
listen := flag.String("listen-addr", ":9649", "Address to listen")
interval := flag.Duration("update-interval", 10*time.Minute, "SMART metrics collect interval")
verbose := flag.Bool("v", false, "Verbose output")
flag.Parse()
zerolog.SetGlobalLevel(zerolog.InfoLevel)
if *verbose {
zerolog.SetGlobalLevel(zerolog.DebugLevel)
}
log.Info().Msg("starting updater")
updaterLogger := zerolog.New(os.Stderr).With().Str("component", "updater").Logger()
u := NewSMARTUpdater(metrics, *interval, &updaterLogger)
go u.Run()
log.Info().Msg("registering metrics")
for _, m := range metrics {
prometheus.MustRegister(m)
}
http.Handle("/metrics", promhttp.Handler())
http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
_, _ = w.Write([]byte(`<html>
<head><title>SMART exporter</title></head>
<body>
<h1>SMART Exporter</h1>
<p><a href='/metrics'>Metrics</a></p>
</body>
</html>
`))
})
log.Info().Str("listen", *listen).Msg("starting server")
log.Fatal().Err(http.ListenAndServe(*listen, nil)).Send()
}