116 lines
3.5 KiB
Go
116 lines
3.5 KiB
Go
package main
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import (
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"flag"
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"fmt"
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"net/http"
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"os"
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"github.com/czerwonk/bird_exporter/protocol"
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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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"github.com/prometheus/common/log"
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)
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const version string = "1.2.1"
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var (
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showVersion = flag.Bool("version", false, "Print version information.")
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listenAddress = flag.String("web.listen-address", ":9324", "Address on which to expose metrics and web interface.")
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metricsPath = flag.String("web.telemetry-path", "/metrics", "Path under which to expose metrics.")
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birdSocket = flag.String("bird.socket", "/var/run/bird.ctl", "Socket to communicate with bird routing daemon")
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birdV2 = flag.Bool("bird.v2", false, "Bird major version >= 2.0 (multi channel protocols)")
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newFormat = flag.Bool("format.new", false, "New metric format (more convenient / generic)")
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enableBgp = flag.Bool("proto.bgp", true, "Enables metrics for protocol BGP")
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enableOspf = flag.Bool("proto.ospf", true, "Enables metrics for protocol OSPF")
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enableKernel = flag.Bool("proto.kernel", true, "Enables metrics for protocol Kernel")
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enableStatic = flag.Bool("proto.static", true, "Enables metrics for protocol Static")
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enableDirect = flag.Bool("proto.direct", true, "Enables metrics for protocol Direct")
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// pre bird 2.0
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bird6Socket = flag.String("bird.socket6", "/var/run/bird6.ctl", "Socket to communicate with bird6 routing daemon (not compatible with -bird.v2)")
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birdEnabled = flag.Bool("bird.ipv4", true, "Get protocols from bird (not compatible with -bird.v2)")
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bird6Enabled = flag.Bool("bird.ipv6", true, "Get protocols from bird6 (not compatible with -bird.v2)")
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)
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func init() {
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flag.Usage = func() {
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fmt.Println("Usage: bird_exporter [ ... ]\n\nParameters:")
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fmt.Println()
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flag.PrintDefaults()
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}
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}
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func main() {
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flag.Parse()
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if *showVersion {
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printVersion()
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os.Exit(0)
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}
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startServer()
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}
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func printVersion() {
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fmt.Println("bird_exporter")
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fmt.Printf("Version: %s\n", version)
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fmt.Println("Author(s): Daniel Czerwonk")
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fmt.Println("Metric exporter for bird routing daemon")
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}
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func startServer() {
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log.Infof("Starting bird exporter (Version: %s)\n", version)
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if !*newFormat {
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log.Info("INFO: You are using the old metric format. Please consider using the new (more convenient one) by setting -format.new=true.")
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}
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http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
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w.Write([]byte(`<html>
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<head><title>Bird Routing Daemon Exporter (Version ` + version + `)</title></head>
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<body>
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<h1>Bird Routing Daemon Exporter</h1>
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<p><a href="` + *metricsPath + `">Metrics</a></p>
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<h2>More information:</h2>
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<p><a href="https://github.com/czerwonk/bird_exporter">github.com/czerwonk/bird_exporter</a></p>
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</body>
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</html>`))
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})
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http.HandleFunc(*metricsPath, handleMetricsRequest)
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log.Infof("Listening for %s on %s\n", *metricsPath, *listenAddress)
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log.Fatal(http.ListenAndServe(*listenAddress, nil))
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}
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func handleMetricsRequest(w http.ResponseWriter, r *http.Request) {
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reg := prometheus.NewRegistry()
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p := enabledProtocols()
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c := NewMetricCollector(*newFormat, p)
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reg.MustRegister(c)
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promhttp.HandlerFor(reg, promhttp.HandlerOpts{
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ErrorLog: log.NewErrorLogger(),
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ErrorHandling: promhttp.ContinueOnError}).ServeHTTP(w, r)
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}
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func enabledProtocols() int {
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res := 0
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if *enableBgp {
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res |= protocol.BGP
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}
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if *enableOspf {
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res |= protocol.OSPF
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}
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if *enableKernel {
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res |= protocol.Kernel
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}
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if *enableStatic {
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res |= protocol.Static
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}
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if *enableDirect {
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res |= protocol.Direct
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}
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return res
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}
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