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tc4400_exporter.go
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package main
import (
"net/http"
"github.com/prometheus/client_golang/prometheus"
"github.com/prometheus/client_golang/prometheus/promhttp"
"github.com/prometheus/common/log"
"github.com/prometheus/common/version"
"gopkg.in/alecthomas/kingpin.v2"
)
const (
exporterName = "tc4400_exporter"
namespace = "tc4400"
)
func main() {
var (
listenAddress = kingpin.Flag("web.listen-address", "Address to listen on for web interface and telemetry.").Default(":9623").OverrideDefaultFromEnvar("TC4400_EXPORTER_PORT").String()
metricsPath = kingpin.Flag("web.telemetry-path", "Path under which to expose metrics.").Default("/metrics").String()
clientScrapeURI = kingpin.Flag("client.scrape-uri", "Base URI on which to scrape TC4400.").Default("http://admin:bEn2o%[email protected]/").OverrideDefaultFromEnvar("TC4400_EXPORTER_SCRAPEURI").String()
clientTimeout = kingpin.Flag("client.timeout", "Timeout for HTTP requests to TC440.").Default("50s").OverrideDefaultFromEnvar("TC4400_EXPORTER_CLIENTTIMEOUT").Duration()
)
log.AddFlags(kingpin.CommandLine)
kingpin.Version(version.Print(exporterName))
kingpin.HelpFlag.Short('h')
kingpin.Parse()
log.Infoln("Starting", exporterName, version.Info())
log.Infoln("Build context", version.BuildContext())
exporter, err := NewExporter(*clientScrapeURI, *clientTimeout)
if err != nil {
log.Fatal(err)
}
prometheus.MustRegister(exporter)
prometheus.MustRegister(version.NewCollector(exporterName))
log.Infoln("Listening on", *listenAddress)
http.Handle(*metricsPath, promhttp.Handler())
http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
w.Write([]byte(`<html>
<head><title>TC4400 Exporter</title></head>
<body>
<h1>TC4400 Exporter</h1>
<p><a href='` + *metricsPath + `'>Metrics</a></p>
</body>
</html>`))
})
log.Fatal(http.ListenAndServe(*listenAddress, nil))
}