78 lines
2.3 KiB
Go
78 lines
2.3 KiB
Go
/*
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Copyright 2022 Dolysis Consulting Limited
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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For changes see the git log
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*/
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package main
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import (
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"flag"
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"github.com/go-logr/logr"
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"github.com/go-logr/zapr"
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"git.st8l.com/dolysis/cups-exporter/pkg"
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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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"go.uber.org/zap"
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"net/http"
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"os"
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)
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type options struct {
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Address string
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MetricsPath string
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CupsUri string
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}
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func main() {
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log := getLogger()
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opts := options{}
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flag.StringVar(&opts.Address, "web.listen-address", ":9628", "address on which to expose metrics and web interface")
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flag.StringVar(&opts.MetricsPath, "web.telemetry-path", "/metrics", "path under which to expose metrics")
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flag.StringVar(&opts.CupsUri, "cups.uri", "https://localhost:631", "uri under which the cups server is available, including username and password it required")
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flag.Parse()
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log.Info("starting cups exporter")
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exporter, err := pkg.NewExporter(opts.CupsUri, log)
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if err != nil {
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log.Error(err, "failed to create the exporter")
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os.Exit(1)
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}
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prometheus.MustRegister(exporter)
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http.Handle(opts.MetricsPath, promhttp.Handler())
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http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
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_, err := w.Write([]byte(`<html>
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<head><title>Cups Exporter</title></head>
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<body>
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<h1>Cups Exporter</h1>
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<p><a href="` + opts.MetricsPath + `">Metrics</a></p>
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</body>
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</html>`))
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if err != nil {
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log.Info("An error occured while writing http response: %v", err)
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}
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})
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log.Info("listening on " + opts.Address)
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log.Error(http.ListenAndServe(opts.Address, nil), "failed to start the http server")
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}
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func getLogger() logr.Logger {
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zapLog, err := zap.NewDevelopment()
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if err != nil {
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panic(err)
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}
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return zapr.NewLogger(zapLog)
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}
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