53 lines
1.6 KiB
Go
53 lines
1.6 KiB
Go
// Command apcupsd_exporter provides a Prometheus exporter for apcupsd.
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package main
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import (
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"context"
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"flag"
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"log"
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"net/http"
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"github.com/mdlayher/apcupsd"
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apcupsdexporter "github.com/mdlayher/apcupsd_exporter"
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"github.com/prometheus/client_golang/prometheus"
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"github.com/prometheus/client_golang/prometheus/promhttp"
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)
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var (
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telemetryAddr = flag.String("telemetry.addr", ":9162", "address for apcupsd exporter")
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metricsPath = flag.String("telemetry.path", "/metrics", "URL path for surfacing collected metrics")
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apcupsdAddr = flag.String("apcupsd.addr", ":3551", "address of apcupsd Network Information Server (NIS)")
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apcupsdNetwork = flag.String("apcupsd.network", "tcp", `network of apcupsd Network Information Server (NIS): typically "tcp", "tcp4", or "tcp6"`)
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)
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func main() {
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flag.Parse()
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if *apcupsdAddr == "" {
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log.Fatal("address of apcupsd Network Information Server (NIS) must be specified with '-apcupsd.addr' flag")
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}
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fn := newClient(*apcupsdNetwork, *apcupsdAddr)
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prometheus.MustRegister(apcupsdexporter.New(fn))
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http.Handle(*metricsPath, promhttp.Handler())
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http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
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http.Redirect(w, r, *metricsPath, http.StatusMovedPermanently)
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})
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log.Printf("starting apcupsd exporter on %q for server %s://%s",
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*telemetryAddr, *apcupsdNetwork, *apcupsdAddr)
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if err := http.ListenAndServe(*telemetryAddr, nil); err != nil {
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log.Fatalf("cannot start apcupsd exporter: %s", err)
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}
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}
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func newClient(network, addr string) apcupsdexporter.ClientFunc {
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return func(ctx context.Context) (*apcupsd.Client, error) {
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return apcupsd.DialContext(ctx, network, addr)
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}
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}
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