influx.go

@@ -0,0 +1,63 @@
+package main
+
+import (
+	"encoding/json"
+	"log"
+
+	client "github.com/influxdata/influxdb1-client/v2"
+)
+
+// Create InfluxDB Client
+func influxDBClient(port string) client.Client {
+	c, err := client.NewHTTPClient(client.HTTPConfig{
+		Addr: conf.General.InfluxURL + ":" + port,
+	})
+	if err != nil {
+		log.Fatalln("Error: ", err)
+	}
+	return c
+}
+
+// Get a single Datapoint from InfluxDB
+func getInfluxDataPoint(dp string, h string, p string) float64 {
+
+	//Build the Query
+	query := "SELECT last(" + dp + ") FROM system WHERE host = '" + h + "'"
+
+	c := influxDBClient(p)
+	q := client.NewQuery(query, "udp", "s")
+	response, err := c.Query(q)
+	if err != nil {
+		log.Println("Influx query error!")
+	}
+	res := 0.0
+	if len(response.Results) > 0 {
+		res, err := response.Results[0].Series[0].Values[0][1].(json.Number).Float64()
+		if err != nil {
+			log.Println("Error in type conversion")
+		}
+		return res
+	}
+	return res
+}
+
+// Send Datapoints to InfluxDB, point map and InfluxDB Port needed
+func sendInfluxBatchDataPoint(point *client.Point, influxPort string) {
+
+	// Open connection to InfluxDB
+	bp, err := client.NewBatchPoints(client.BatchPointsConfig{
+		Database:  "freifunk",
+		Precision: "s",
+	})
+	if err != nil {
+		log.Fatalln("Error: ", err)
+	}
+
+	bp.AddPoint(point)
+	c := influxDBClient(influxPort)
+	err = c.Write(bp)
+	if err != nil {
+		log.Fatal(err)
+	}
+	//
+}

main.go

@@ -47,8 +47,6 @@ func main() {
 			}
 		}
 	}()
-	//processUNMSAPIRouter()
-	//createMetrics(influxDBClient())
 	// start webserver on Port 3000
 	serveJSON()
 }

staticDevices.go

@@ -4,15 +4,59 @@ import (
 	"log"
 	"strings"
 	"time"
+
+	client "github.com/influxdata/influxdb1-client/v2"
 )
 
 func processGateways() []node {
 	d := getDevices(conf.Gateways.GatewaysURL)
 	var nodes []node
+
 	for i := range d.Devices {
 		log.Println("Processing Static Device: ", d.Devices[i].Name)
+		currentDevice := d.Devices[i]
+
+		//Calulate Memory
+		mem := getInfluxDataPoint("mem", currentDevice.FQDN, conf.General.ProxmoxInfluxPort)
+		maxmem := getInfluxDataPoint("maxmem", currentDevice.FQDN, conf.General.ProxmoxInfluxPort)
+		memory := mem / maxmem * 100
+		rx := getInfluxDataPoint("netin", currentDevice.FQDN, conf.General.ProxmoxInfluxPort)
+		tx := getInfluxDataPoint("netout", currentDevice.FQDN, conf.General.ProxmoxInfluxPort)
+		// Get CPU
+		cpu := getInfluxDataPoint("cpu", currentDevice.FQDN, conf.General.ProxmoxInfluxPort)
+		//Uptime (seconds)
+		uptime := getInfluxDataPoint("uptime", currentDevice.FQDN, conf.General.ProxmoxInfluxPort)
+		t := time.Duration(uptime * float64(time.Second))
+		up := time.Now().Add(-t)
+
+		// fields := map[string]interface{}{}
+		fields := make(map[string]any)
+		tags := map[string]string{
+			"hostname": strings.ReplaceAll(d.Devices[i].Name, " ", "-"),
+			"nodeid":   strings.ReplaceAll(d.Devices[i].MAC, ":", ""),
+		}
+
+		//Build fields for InfluxDB
+		fields["load"] = cpu
+		fields["ram"] = int(memory)
+		fields["time.up"] = int(uptime)
+		//Network
+		fields["traffic.rx.bytes"] = int(rx)
+		fields["traffic.tx.bytes"] = int(tx)
+
+		point, err := client.NewPoint(
+			"node",
+			tags,
+			fields,
+			time.Now(),
+		)
+		if err != nil {
+			log.Fatalln("Error: ", err)
+		}
+		sendInfluxBatchDataPoint(point, conf.General.FreifunkInfluxPort)
+		//Build Nodes
 		nodes = append(nodes, node{
-			Firstseen:      time.Now().Format(iso8601),
+			Firstseen:      up.Format(iso8601),
 			Lastseen:       time.Now().Format(iso8601),
 			IsOnline:       true,
 			IsGateway:      true,
@@ -21,9 +65,9 @@ func processGateways() []node {
 			ClientsWifi5:   0,
 			ClientsOther:   0,
 			RootFSUsage:    0,
-			LoadAVG:        0,
+			LoadAVG:        cpu,
-			MemoryUsage:    0,
+			MemoryUsage:    memory,
-			Uptime:         time.Now().Format(iso8601),
+			Uptime:         up.Format(iso8601),
 			GatewayNexthop: "",
 			Gateway:        "",
 			NodeID:         strings.ReplaceAll(d.Devices[i].MAC, ":", ""),

types.go

@@ -10,6 +10,11 @@ import (
 )
 
 type config struct {
+	General struct {
+		FreifunkInfluxPort string `json:"freifunk_influx_port"`
+		ProxmoxInfluxPort  string `json:"proxmox_influx_port"`
+		InfluxURL          string `json:"influx_url"`
+	}
 	Unms struct {
 		Enabled    bool   `json:"enabled"`
 		UnmsAPIURL string `json:"unmsAPIUrl"`
@@ -40,6 +45,7 @@ type config struct {
 
 type device struct {
 	Name           string `json:"name"`
+	FQDN           string `json:"fqdn"`
 	MAC            string `json:"mac"`
 	GatewayNexthop string `json:"gateway_nexthop"`
 	LinkedTo       string `json:"linked_to"`

unms.go

@@ -104,7 +104,6 @@ func processUNMSAPI() ([]node, []link) {
 func processUNMSAPIRouter() ([]node, error) {
 	// Variables for runtime
 	var nodes []node
-
 	d := getDevices(conf.Unms.RouterURL)
 
 	// API CALL 1, get all devices list from UNMS
@@ -154,16 +153,6 @@ func processUNMSAPIRouter() ([]node, error) {
 			log.Println("Router ist offline, skipping DHCP Leases")
 		}
 
-		// Open connection to InfluxDB
-		bp, err := client.NewBatchPoints(client.BatchPointsConfig{
-			Database:  "freifunk",
-			Precision: "s",
-		})
-		if err != nil {
-			log.Fatalln("Error: ", err)
-		}
-		//
-
 		// fields := map[string]interface{}{}
 		fields := make(map[string]any)
 		tags := map[string]string{
@@ -204,14 +193,8 @@ func processUNMSAPIRouter() ([]node, error) {
 		if err != nil {
 			log.Fatalln("Error: ", err)
 		}
-		// Add Datapoints in InfluxDB
-		bp.AddPoint(point)
-		c := influxDBClient()
-		err = c.Write(bp)
-		if err != nil {
-			log.Fatal(err)
-		}
 
+		sendInfluxBatchDataPoint(point, conf.General.FreifunkInfluxPort)
 		// Get info from json file (static)
 		nodes = append(nodes, node{
 			Firstseen:      dev.Overview.CreatedAt.Format(iso8601),
@@ -250,16 +233,6 @@ func processUNMSAPIRouter() ([]node, error) {
 	return nodes, nil
 }
 
-func influxDBClient() client.Client {
-	c, err := client.NewHTTPClient(client.HTTPConfig{
-		Addr: "http://statistik.freifunk-troisdorf.de:8886",
-	})
-	if err != nil {
-		log.Fatalln("Error: ", err)
-	}
-	return c
-}
-
 func UnmsCallAPI(url string, i any) error {
 	request, err := http.NewRequest(http.MethodGet, conf.Unms.UnmsAPIURL+url, nil)
 	if err != nil {