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main.go
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// SPDX-FileCopyrightText: (c) Mauve Mailorder Software GmbH & Co. KG, 2020. Licensed under MIT license.
//
// SPDX-License-Identifier: MIT
package main
import (
"flag"
"fmt"
"net/http"
"os"
"github.com/prometheus/client_golang/prometheus"
"github.com/prometheus/client_golang/prometheus/promhttp"
"github.com/sirupsen/logrus"
)
const version string = "0.1.0"
var (
showVersion = flag.Bool("version", false, "Print version information.")
listenAddress = flag.String("web.listen-address", ":9665", "Address on which to expose metrics and web interface.")
metricsPath = flag.String("web.telemetry-path", "/metrics", "Path under which to expose metrics.")
configFile = flag.String("config.path", "config.yml", "Path to config file")
)
func main() {
flag.Parse()
if *showVersion {
printVersion()
os.Exit(0)
}
startServer()
}
func printVersion() {
fmt.Println("senderscore_exporter")
fmt.Printf("Version: %s\n", version)
fmt.Println("Author(s): Daniel Czerwonk")
fmt.Println("Copyright: 2020, Mauve Mailorder Software GmbH & Co. KG, Licensed under MIT license")
fmt.Println("Metric exporter for senderscore.org scores")
}
func startServer() {
logrus.Infof("Starting Senderscore exporter (Version: %s)", version)
http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
w.Write([]byte(`<html>
<head><title>Senderscore Exporter (Version ` + version + `)</title></head>
<body>
<h1>Senderscore Exporter by Mauve Mailorder Software</h1>
<h2>Metrics</h2>
<p><a href="/metrics">here</a></p>
<h2>More information</h2>
<p><a href="https://github.com/MauveSoftware/senderscore_exporter">github.com/MauveSoftware/senderscore_exporter</a></p>
</body>
</html>`))
})
cfg, err := loadConfigFromFile(*configFile)
if err != nil {
logrus.Fatal(err)
}
prometheus.MustRegister(newCollector(cfg))
http.Handle("/metrics", promhttp.Handler())
logrus.Infof("Listening for %s on %s", *metricsPath, *listenAddress)
logrus.Fatal(http.ListenAndServe(*listenAddress, nil))
}