[GO][ADD] Added a new collector for detect-internet

collector/collector.go

@@ -175,6 +175,13 @@ func WithIpsec() Option {
 	}
 }
 
+// WithInternet enables internet access metrics
+func WithInternet() Option {
+	return func(c *collector) {
+		c.collectors = append(c.collectors, newInternetCollector())
+	}
+}
+
 // Option applies options to collector
 type Option func(*collector)
 

collector/internet_collector.go

@@ -0,0 +1,81 @@
+package collector
+
+import (
+	"strings"
+	"github.com/prometheus/client_golang/prometheus"
+	log "github.com/sirupsen/logrus"
+)
+
+type internetCollector struct {
+	props        []string
+	descriptions map[string]*prometheus.Desc
+}
+
+func newInternetCollector() routerOSCollector {
+	c := &internetCollector{}
+	c.init()
+	return c
+}
+
+func (c *internetCollector) init() {
+	// Properties other than 'name' that will be used in .proplist
+	c.props = []string{"state"}
+	// Description for the returned values in the metric
+	labelNames := []string{"devicename", "interface"}
+	c.descriptions = make(map[string]*prometheus.Desc)
+	for _, p := range c.props {
+		c.descriptions[p] = descriptionForPropertyName("internet", p, labelNames)
+	}
+}
+
+func (c *internetCollector) describe(ch chan<- *prometheus.Desc) {
+	for _, d := range c.descriptions {
+		ch <- d
+	}
+}
+
+func (c *internetCollector) collect(ctx *collectorContext) error {
+	reply, err := ctx.client.Run("/interface/detect-internet/state/print", "=.proplist=name,"+strings.Join(c.props, ","))
+	if err != nil {
+		log.WithFields(log.Fields{
+			"device": ctx.device.Name,
+			"error":  err,
+		}).Error("error fetching detect-internet state")
+		return err
+	}
+
+	for _, e := range reply.Re {
+		for _, prop := range c.props {
+			v, ok := e.Map[prop]
+			if !ok {
+				continue
+			}
+
+			value := float64(c.valueForProp(prop, v))
+			ctx.ch <- prometheus.MustNewConstMetric(c.descriptions[prop], prometheus.GaugeValue, value, ctx.device.Name, e.Map["name"])
+		}
+	}
+
+	return nil
+}
+
+// Here are the corresponding values for detect-internet's output:
+// - internet: 2
+// - wan: 1
+// - lan: 0
+func (c *internetCollector) valueForProp(name, value string) int {
+	switch {
+	case name == "state":
+		return func(v string) int {
+			if v == "internet" {
+				return 2
+			}
+			if v == "wan" {
+				return 1
+			}
+			return 0
+		}(value)
+	default:
+		return 0
+	}
+}

config/config.go

@@ -27,6 +27,7 @@ type Config struct {
 		WlanIF   bool `yaml:"wlanif,omitempty"`
 		Monitor  bool `yaml:"monitor,omitempty"`
 		Ipsec    bool `yaml:"ipsec,omitempty"`
+		Internet bool `yaml:"internet,omitempty"`
 	} `yaml:"features,omitempty"`
 }
 

main.go

@@ -51,8 +51,8 @@ var (
 	withWlanIF   = flag.Bool("with-wlanif", false, "retrieves wlan interface metrics")
 	withMonitor  = flag.Bool("with-monitor", false, "retrieves ethernet interface monitor info")
 	withIpsec    = flag.Bool("with-ipsec", false, "retrieves ipsec metrics")
-
-	cfg *config.Config
+	withInternet = flag.Bool("with-internet", false, "retrieves detect-internet interfaces")
+	cfg          *config.Config
 
 	appVersion = "DEVELOPMENT"
 	shortSha   = "0xDEADBEEF"
@@ -241,12 +241,16 @@ func collectorOptions() []collector.Option {
 		opts = append(opts, collector.WithIpsec())
 	}
 
+	if *withInternet || cfg.Features.Internet {
+		opts = append(opts, collector.WithInternet())
+	}
+
 	if *timeout != collector.DefaultTimeout {
 		opts = append(opts, collector.WithTimeout(*timeout))
 	}
 
 	if *tls || cfg.Features.TLS {
-		fmt.Printf("TLS activated\n");
+		fmt.Printf("TLS activated\n")
 		opts = append(opts, collector.WithTLS(*insecure))
 	}