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main.go
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main.go
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// Copyright 2018 Ben Kochie <[email protected]>
//
// 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"
_ "net/http/pprof"
"os"
vigorv5 "github.com/SuperQ/draytek_exporter/vigor_v5"
"github.com/alecthomas/kingpin/v2"
"github.com/prometheus/client_golang/prometheus"
versioncollector "github.com/prometheus/client_golang/prometheus/collectors/version"
"github.com/prometheus/client_golang/prometheus/promhttp"
"github.com/prometheus/common/promslog"
"github.com/prometheus/common/promslog/flag"
"github.com/prometheus/common/version"
"github.com/prometheus/exporter-toolkit/web"
"github.com/prometheus/exporter-toolkit/web/kingpinflag"
)
const exporterName = "draytek_exporter"
func init() {
prometheus.MustRegister(versioncollector.NewCollector(exporterName))
}
func main() {
var (
toolkitFlags = kingpinflag.AddFlags(kingpin.CommandLine, ":9103")
metricsPath = kingpin.Flag("web.telemetry-path", "Path under which to expose metrics.").Default("/metrics").String()
username = kingpin.Flag("username", "username to authenticate to the target").Default("monitor").String()
passwordEnv = kingpin.Flag("password-env", "Env var that contains password to authenticate to the target").Default("DRAYTEK_PASSWORD").String()
target = kingpin.Flag("target", "target host/ip the router/modem is reachable on").Default("192.168.1.1").String()
)
promslogConfig := &promslog.Config{}
flag.AddFlags(kingpin.CommandLine, promslogConfig)
kingpin.Version(version.Print("mysqld_exporter"))
kingpin.Parse()
logger := promslog.New(promslogConfig)
logger.Info("Starting "+exporterName, "version", version.Info())
logger.Info("Build context", "build_context", version.BuildContext())
password := os.Getenv(*passwordEnv)
if password == "" {
logger.Error("Missing password from env", "env", *passwordEnv)
os.Exit(1)
}
var err error
v, err := vigorv5.New(logger, *target, *username, password)
if err != nil {
logger.Error("Unable to create target", "err", err)
os.Exit(1)
}
err = v.Login()
if err != nil {
logger.Error("Failed initial login attempt", "err", err)
os.Exit(1)
}
logger.Info("Initial Login on DrayTek device successful")
http.Handle(*metricsPath, promhttp.Handler())
if *metricsPath != "/" && *metricsPath != "" {
landingConfig := web.LandingConfig{
Name: "DrayTek Exporter",
Description: "Prometheus Exporter for DrayTek modems/routers",
Version: version.Info(),
Links: []web.LandingLinks{
{
Address: *metricsPath,
Text: "Metrics",
},
},
}
landingPage, err := web.NewLandingPage(landingConfig)
if err != nil {
logger.Error("error creating landing page", "err", err)
os.Exit(1)
}
http.Handle("/", landingPage)
}
prometheus.MustRegister(NewExporter(v))
srv := &http.Server{}
if err := web.ListenAndServe(srv, toolkitFlags, logger); err != nil {
logger.Error("Error starting HTTP server", "err", err)
os.Exit(1)
}
}