// Copyright 2019 VEXXHOST, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package main
import (
"net/http"
"github.com/libvirt/libvirt-go"
"github.com/prometheus/client_golang/prometheus"
"github.com/prometheus/client_golang/prometheus/promhttp"
"github.com/prometheus/common/log"
"github.com/prometheus/common/version"
"gopkg.in/alecthomas/kingpin.v2"
"opendev.org/vexxhost/libvirtd_exporter/collectors"
)
func main() {
var (
listenAddress = kingpin.Flag(
"web.listen-address",
"Address on which to expose metrics and web interface.",
).Default(":9474").String()
metricsPath = kingpin.Flag(
"web.telemetry-path",
"Path under which to expose metrics.",
).Default("/metrics").String()
libvirtURI = kingpin.Flag(
"libvirt.uri",
"Libvirt Connection URI",
).Default("qemu:///system").String()
libvirtNova = kingpin.Flag(
"libvirt.nova",
"Parse Libvirt Nova metadata",
).Bool()
)
kingpin.Version(version.Print("libvirtd_exporter"))
kingpin.HelpFlag.Short('h')
kingpin.Parse()
conn, err := libvirt.NewConnect(*libvirtURI)
if err != nil {
log.Fatalln(err)
}
defer conn.Close()
versionCollector, err := collectors.NewVersionCollector(conn)
if err != nil {
log.Fatalln(err)
}
domainStats, err := collectors.NewDomainStatsCollector(conn, *libvirtNova)
if err != nil {
log.Fatalln(err)
}
prometheus.MustRegister(domainStats)
prometheus.MustRegister(versionCollector)
http.Handle("/metrics", promhttp.Handler())
http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
_, _ = w.Write([]byte(`
Libvirtd Exporter
Libvirtd Exporter
Metrics
Build
` + version.Info() + ` ` + version.BuildContext() + `