Add exporter

Author: Tomy2e

.dockerignore

@@ -0,0 +1 @@
+.git

Dockerfile

@@ -0,0 +1,12 @@
+# Build stage
+FROM golang:1.17-alpine AS build
+WORKDIR /app
+COPY . .
+RUN go build -o /livebox-exporter
+# Final image
+FROM alpine:3.14
+WORKDIR /
+COPY --from=build /livebox-exporter /usr/local/bin/livebox-exporter
+EXPOSE 8080
+USER 10001:10001
+ENTRYPOINT ["livebox-exporter"]

README.md

@@ -1 +1,39 @@
-# livebox-exporter
+# livebox-exporter
+
+A prometheus exporter for Livebox. This exporter was tested with a Livebox 5 and
+FTTH subscription.
+
+## Metrics
+
+This exporter currently exposes the following metrics:
+
+| Name               | Type  | Description                  | Labels    |
+| ------------------ | ----- | ---------------------------- | --------- |
+| interface_rx_mbits | gauge | Received Mbits per second    | interface |
+| interface_tx_mbits | gauge | Transmitted Mbits per second | interface |
+
+## Usage
+
+### Options
+
+The exporter accepts the following command-line options:
+
+| Name                | Description       | Default value |
+| ------------------- | ----------------- | ------------- |
+| --polling-frequency | Polling frequency | 30            |
+| --listen            | Listening address | :8080         |
+
+The exporter reads the following environment variables:
+
+| Name           | Description                                                                                               | Default value |
+| -------------- | --------------------------------------------------------------------------------------------------------- | ------------- |
+| ADMIN_PASSWORD | Password of the Livebox "admin" user. The exporter will exit if this environment variable is not defined. |               |
+
+### Docker
+
+Use the following commands to run the exporter in Docker:
+
+```console
+docker build -t livebox-exporter .
+docker run -p 8080:8080 -e ADMIN_PASSWORD=<changeme> livebox-exporter
+```

go.mod

@@ -0,0 +1,20 @@
+module github.com/Tomy2e/livebox-exporter
+
+go 1.17
+
+require (
+	github.com/Tomy2e/livebox-api-client v0.0.0-20211112014400-2ac195fb56d7
+	github.com/prometheus/client_golang v1.11.0
+)
+
+require (
+	github.com/beorn7/perks v1.0.1 // indirect
+	github.com/cespare/xxhash/v2 v2.1.1 // indirect
+	github.com/golang/protobuf v1.4.3 // indirect
+	github.com/matttproud/golang_protobuf_extensions v1.0.1 // indirect
+	github.com/prometheus/client_model v0.2.0 // indirect
+	github.com/prometheus/common v0.26.0 // indirect
+	github.com/prometheus/procfs v0.6.0 // indirect
+	golang.org/x/sys v0.0.0-20210603081109-ebe580a85c40 // indirect
+	google.golang.org/protobuf v1.26.0-rc.1 // indirect
+)

go.sum

@@ -0,0 +1,140 @@
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main.go

@@ -0,0 +1,106 @@
+package main
+
+import (
+	"context"
+	"flag"
+	"log"
+	"net/http"
+	"os"
+	"time"
+
+	"github.com/Tomy2e/livebox-api-client"
+	"github.com/Tomy2e/livebox-api-client/api/request"
+	"github.com/prometheus/client_golang/prometheus"
+	"github.com/prometheus/client_golang/prometheus/promauto"
+	"github.com/prometheus/client_golang/prometheus/promhttp"
+)
+
+const defaultPollingFrequency = 30
+
+var (
+	rxMbits = promauto.NewGaugeVec(prometheus.GaugeOpts{
+		Name: "interface_rx_mbits",
+		Help: "Received Mbits per second",
+	}, []string{
+		// Name of the interface.
+		"interface",
+	})
+	txMbits = promauto.NewGaugeVec(prometheus.GaugeOpts{
+		Name: "interface_tx_mbits",
+		Help: "Transmitted Mbits per second",
+	}, []string{
+		// Name of the interface.
+		"interface",
+	})
+)
+
+func bitsPer30SecsToMbitsPerSec(v int) float64 {
+	return float64(v) / 30000000
+}
+
+func main() {
+	pollingFrequency := flag.Uint("polling-frequency", defaultPollingFrequency, "Polling frequency")
+	listen := flag.String("listen", ":8080", "Listening address")
+	flag.Parse()
+
+	adminPassword := os.Getenv("ADMIN_PASSWORD")
+	if adminPassword == "" {
+		log.Fatal("ADMIN_PASSWORD environment variable must be set")
+	}
+
+	ctx := context.Background()
+	client := livebox.NewClient(adminPassword)
+
+	go func() {
+		for {
+			var counters struct {
+				Status map[string]struct {
+					Traffic []struct {
+						Timestamp int `json:"Timestamp"`
+						RxCounter int `json:"Rx_Counter"`
+						TxCounter int `json:"Tx_Counter"`
+					} `json:"Traffic"`
+				} `json:"status"`
+			}
+
+			// Request latest rx/tx counters.
+			if err := client.Request(
+				ctx,
+				request.New(
+					"HomeLan",
+					"getResults",
+					map[string]interface{}{
+						"Seconds":          0,
+						"NumberOfReadings": 1,
+					},
+				),
+				&counters,
+			); err != nil {
+				log.Fatalf("Request to Livebox API failed: %v", err)
+			}
+
+			for iface, traffic := range counters.Status {
+				rxCounter := 0
+				txCounter := 0
+
+				if len(traffic.Traffic) > 0 {
+					rxCounter = traffic.Traffic[0].RxCounter
+					txCounter = traffic.Traffic[0].TxCounter
+				}
+
+				rxMbits.
+					With(prometheus.Labels{"interface": iface}).
+					Set(bitsPer30SecsToMbitsPerSec(rxCounter))
+				txMbits.
+					With(prometheus.Labels{"interface": iface}).
+					Set(bitsPer30SecsToMbitsPerSec(txCounter))
+			}
+
+			time.Sleep(time.Duration(*pollingFrequency) * time.Second)
+		}
+	}()
+
+	http.Handle("/metrics", promhttp.Handler())
+	log.Printf("Listening on %s\n", *listen)
+	log.Fatal(http.ListenAndServe(*listen, nil))
+}