package main
import (
"io"
"log"
"net/http"
"github.com/alecthomas/kingpin/v2"
kitlog "github.com/go-kit/log"
"github.com/hansmi/paperhooks/pkg/client"
"github.com/hansmi/paperhooks/pkg/kpflag"
"github.com/prometheus/client_golang/prometheus"
"github.com/prometheus/client_golang/prometheus/collectors"
"github.com/prometheus/client_golang/prometheus/collectors/version"
"github.com/prometheus/client_golang/prometheus/promhttp"
"github.com/prometheus/exporter-toolkit/web"
webflag "github.com/prometheus/exporter-toolkit/web/kingpinflag"
)
var webConfig = webflag.AddFlags(kingpin.CommandLine, ":8081")
var metricsPath = kingpin.Flag("web.telemetry-path", "Path under which to expose metrics").Default("/metrics").String()
var disableExporterMetrics = kingpin.Flag("web.disable-exporter-metrics", "Exclude metrics about the exporter itself").Bool()
var timeout = kingpin.Flag("scrape-timeout", "Maximum duration for a scrape").Default("1m").Duration()
func main() {
var clientFlags client.Flags
kpflag.RegisterClient(kingpin.CommandLine, &clientFlags)
kingpin.Parse()
client, err := clientFlags.Build()
if err != nil {
log.Fatal(err)
}
reg := prometheus.NewPedanticRegistry()
reg.MustRegister(newCollector(client, *timeout))
if !*disableExporterMetrics {
reg.MustRegister(
collectors.NewBuildInfoCollector(),
collectors.NewProcessCollector(collectors.ProcessCollectorOpts{}),
collectors.NewGoCollector(),
version.NewCollector("prometheus_paperless_exporter"),
)
}
http.Handle(*metricsPath, promhttp.HandlerFor(reg, promhttp.HandlerOpts{}))
http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
io.WriteString(w, `
Paperless Exporter
Paperless Exporter
Metrics
`)
})
logger := kitlog.NewLogfmtLogger(kitlog.StdlibWriter{})
server := &http.Server{}
if err := web.ListenAndServe(server, webConfig, logger); err != nil {
log.Fatal(err)
}
}