jalr/vodafone-station-exporter
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Update dependencies and rework logging

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This commit is contained in:
Jakob Lechner 2025-09-15 16:35:42 +02:00
parent 0d17408255
commit 09785448e2
6 changed files with 127 additions and 439 deletions
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34
main.go
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@ -6,7 +6,9 @@ import (
"github.com/fluepke/vodafone-station-exporter/collector"
"github.com/prometheus/client_golang/prometheus"
"github.com/prometheus/client_golang/prometheus/promhttp"
"github.com/prometheus/common/log"
"github.com/prometheus/common/promslog"
stdlog "log"
"log/slog"
"net/http"
"os"
"reflect"
@ -14,23 +16,29 @@ import (
const version = "0.0.1"
var logger *slog.Logger
type slogWriter struct{}
func (s *slogWriter) Write(p []byte) (n int, err error) {
logger.Error("promhttp error", slog.String("err", string(p)))
return len(p), nil
}
var (
showVersion = flag.Bool("version", false, "Print version and exit")
showMetrics = flag.Bool("show-metrics", false, "Show available metrics and exit")
listenAddress = flag.String("web.listen-address", "[::]:9420", "Address to listen on")
metricsPath = flag.String("web.telemetry-path", "/metrics", "Path under which to expose metrics")
logLevel = flag.String("log.level", "info", "Logging level")
vodafoneStationUrl = flag.String("vodafone.station-url", "http://192.168.0.1", "Vodafone station URL. For bridge mode this is 192.168.100.1 (note: Configure a route if using bridge mode)")
vodafoneStationPassword = flag.String("vodafone.station-password", "How is the default password calculated? mhmm", "Password for logging into the Vodafone station")
)
func main() {
flag.Parse()
err := log.Base().SetLevel(*logLevel)
if err != nil {
fmt.Println("Invalid log level")
os.Exit(2)
}
cfg := &promslog.Config{}
logger = promslog.New(cfg)
if *showMetrics {
describeMetrics()
@ -85,7 +93,7 @@ func describeMetric(desc *prometheus.Desc) {
}
func startServer() {
log.Infof("Starting vodafone-station-exporter (version %s)", version)
logger.Info("Starting vodafone-station-exporter", slog.String("version", version))
http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
w.Write([]byte(`<html>
<head><title>vodafone-station-exporter (Version ` + version + `)</title></head>
@ -97,17 +105,21 @@ func startServer() {
})
http.HandleFunc(*metricsPath, handleMetricsRequest)
log.Infof("Listening on %s", *listenAddress)
log.Fatal(http.ListenAndServe(*listenAddress, nil))
logger.Info("Listening on address", slog.String("address", *listenAddress))
if err := http.ListenAndServe(*listenAddress, nil); err != nil {
logger.Error("HTTP server failed", slog.String("err", err.Error()))
os.Exit(1)
}
}
func handleMetricsRequest(w http.ResponseWriter, request *http.Request) {
registry := prometheus.NewRegistry()
registry.MustRegister(&collector.Collector{
Station: collector.NewVodafoneStation(*vodafoneStationUrl, *vodafoneStationPassword),
Logger: logger,
})
promhttp.HandlerFor(registry, promhttp.HandlerOpts{
ErrorLog: log.NewErrorLogger(),
ErrorLog: stdlog.New(&slogWriter{}, "", 0),
ErrorHandling: promhttp.ContinueOnError,
}).ServeHTTP(w, request)
}