61 lines
1.7 KiB
Go
61 lines
1.7 KiB
Go
// Copyright (c) 2017 Arista Networks, Inc.
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// Use of this source code is governed by the Apache License 2.0
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// that can be found in the COPYING file.
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// The ocprometheus implements a Prometheus exporter for OpenConfig telemetry data.
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package main
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import (
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"flag"
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"io/ioutil"
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"net/http"
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"sync"
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"github.com/aristanetworks/goarista/openconfig/client"
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"github.com/aristanetworks/glog"
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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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)
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func main() {
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listenaddr := flag.String("listenaddr", ":8080", "Address on which to expose the metrics")
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url := flag.String("url", "/metrics", "URL where to expose the metrics")
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configFlag := flag.String("config", "",
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"Config to turn OpenConfig telemetry into Prometheus metrics")
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username, password, subscriptions, addrs, opts := client.ParseFlags()
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if *configFlag == "" {
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glog.Fatal("You need specify a config file using -config flag")
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}
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cfg, err := ioutil.ReadFile(*configFlag)
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if err != nil {
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glog.Fatalf("Can't read config file %q: %v", *configFlag, err)
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}
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config, err := parseConfig(cfg)
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if err != nil {
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glog.Fatal(err)
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}
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// Ignore the default "subscribe-to-everything" subscription of the
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// -subscribe flag.
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if subscriptions[0] == "" {
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subscriptions = subscriptions[1:]
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}
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// Add the subscriptions from the config file.
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subscriptions = append(subscriptions, config.Subscriptions...)
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coll := newCollector(config)
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prometheus.MustRegister(coll)
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wg := new(sync.WaitGroup)
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for _, addr := range addrs {
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wg.Add(1)
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c := client.New(username, password, addr, opts)
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go c.Subscribe(wg, subscriptions, coll.update)
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}
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http.Handle(*url, promhttp.Handler())
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glog.Fatal(http.ListenAndServe(*listenaddr, nil))
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}
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