added first support for config file

example.config.json

@@ -0,0 +1,15 @@
+{
+    "unms": {
+        "active": "true",
+        "unmsAPIUrl": "https://unifi.freifunk-troisdorf.de/v2.1",
+        "APItoken": "API TOKEN",
+        "devicesURL": "https://git.freifunk-rhein-sieg.net/Freifunk-Troisdorf/ubnt-freifunk-map-api/raw/branch/master/"
+    },
+    "unifi": {
+        "active": "true",
+        "APIUrl": "https://unifi.freifunk-troisdorf.de:8443",
+        "user": "APIuser",
+        "password": "PASSWORD",
+        "ucDevicesURL": "https://git.freifunk-rhein-sieg.net/Freifunk-Troisdorf/ubnt-freifunk-map-api/raw/branch/master/"
+    }
+}

main.go

@@ -10,6 +10,7 @@ import (
 	"log"
 	"net/http"
 	"net/http/cookiejar"
+	"os"
 	"strconv"
 	"strings"
 	"time"
@@ -17,74 +18,41 @@ import (
 	_ "git.nils.zone/nils/prettify"
 )
 
-// types
-
 const (
-	baseURL   = "https://unifi.freifunk-troisdorf.de/v2.1"
-	ucBaseURL = "https://unifi.freifunk-troisdorf.de:8443"
 	iso8601 = "2006-01-02T15:04:05-0700"
 )
 
 // flags
-var token = flag.String("token", "", "Defines the x-auth-token")
-var ucUser = flag.String("ucUser", "", "Defines the Unifi API User")
-var ucPass = flag.String("ucPass", "", "Defines the Unifi API Password")
+var configPath = flag.String("configPath", "config.json", "Path to config.json")
 var version = "development"
-var delay time.Duration = 60 * time.Second
+var delay time.Duration = 5 * time.Second
 
 func main() {
 	log.Printf("starting version %s...\n", version)
 	// parse all flags
 	flag.Parse()
+	c := loadConfig(*configPath)
 
 	// check if flags are set
-	if *token == "" {
-		log.Fatalln("Please specify an API token via the flag '-token'")
+	if *configPath == "" {
+		log.Fatalln("Please specify path to config.json flag '-configPath'")
 	}
-	if *ucPass == "" {
-		log.Fatalln("Please specify an API Password via the flag '-ucPass'")
-	}
-	if *ucUser == "" {
-		log.Fatalln("Please specify an API User via the flag '-ucUser'")
-	}
-
 	// start API processing (runs in a loop)
-	go processAPIs()
+	go processAPIs(c)
 
 	// start webserver on Port 3000
 	serveJSON()
 }
 
-//switch Unifi AP Mod IDs to Names
-func lookupModels(model string) string {
-	switch model {
-	case "BZ2", "U2S48", "U2Sv2":
-		return "Unifi AP"
-	case "BZ2LR", "U2L48", "U2Lv2":
-		return "UniFi AP-LR"
-	case "U7E", "U7Ev2":
-		return "UniFi AP-AC"
-	case "U7HD", "U7SHD":
-		return "UniFi AP-HD"
-	case "UXSDM":
-		return "UniFi AP-BaseStationXG"
-	case "UCMSH":
-		return "AP-MeshXG"
-	case "U7MP":
-		return "AP-AC-Mesh-Pro"
-	case "U7LR":
-		return "UniFi AP-AC-LR"
-	case "U7LT":
-		return "UniFi AP-AC-Lite"
-	case "U7P":
-		return "UniFi AP-Pro"
-	case "U7MSH":
-		return "UniFi AP-AC-Mesh"
-	case "U7PG2":
-		return "UniFi AP-AC-Pro"
-	default:
-		return "Unifi Gerät"
+func loadConfig(file string) Config {
+	var config Config
+	configFile, err := os.Open(file)
+	if err != nil {
+		log.Fatalln(err)
 	}
+	jsonParse := json.NewDecoder(configFile)
+	jsonParse.Decode(&config)
+	return config
 }
 
 //int to bool converter
@@ -96,27 +64,27 @@ func itob(i int) bool {
 }
 
 //Unifi Controller API processing
-func processUcAPIs() ([]node, []link) {
+func processUcAPIs(c Config) ([]node, []link) {
 	//get list of Unifi devices to display
 	var nodes []node
 	var links []link
-	d, err := getDevices("ucDevices.json")
+	d, err := getDevices(c, "ucDevices.json")
 	if err != nil {
 		log.Fatalln(err)
 	}
 	//call Unifi Controller
-	ucAPI := newAPI(*ucUser, *ucPass, ucBaseURL)
+	ucAPI := newAPI(c.Unifi.User, c.Unifi.Password, c.Unifi.APIURL)
 	//login
 	ucAPI.ucLogin()
 	//get all Sites from Controller
 	sites, err := ucAPI.ucGetSites()
 	if err != nil {
-		panic(err)
+		log.Fatalln(err)
 	}
 	//get all devices in all sites
 	devices, err := ucAPI.ucGetDevices(sites)
 	if err != nil {
-		panic(err)
+		log.Fatalln(err)
 	}
 
 	//build nodes struct
@@ -135,11 +103,11 @@ func processUcAPIs() ([]node, []link) {
 
 		load, err := strconv.ParseFloat(currentDevice.Sysstats.CPU, 64)
 		if err != nil {
-			panic(err)
+			log.Fatalln(err)
 		}
 		mem, err := strconv.ParseFloat(currentDevice.Sysstats.Memory, 64)
 		if err != nil {
-			panic(err)
+			log.Fatalln(err)
 		}
 
 		nodes = append(nodes, node{
@@ -180,12 +148,12 @@ func processUcAPIs() ([]node, []link) {
 }
 
 //UNMS API processing (Richtfunk)
-func processUNMSAPI() ([]node, []link) {
+func processUNMSAPI(c Config) ([]node, []link) {
 	// Variables for runtime
 	var links []link
 	var nodes []node
 
-	d, err := getDevices("devices.json")
+	d, err := getDevices(c, "devices.json")
 	if err != nil {
 		log.Fatalln(err)
 	}
@@ -193,7 +161,7 @@ func processUNMSAPI() ([]node, []link) {
 	// API CALL 1
 	log.Println("calling API 1")
 	var u []unifiAPIResponse
-	err = callUnifiAPI("/devices", &u)
+	err = callUnifiAPI(c, "/devices", &u)
 	if err != nil {
 		log.Fatalln(err)
 	}
@@ -217,13 +185,13 @@ func processUNMSAPI() ([]node, []link) {
 		// API CALL 2
 		log.Println("calling API 2 for device", d.Devices[i].Name)
 		var details unifiAPIDetails
-		callUnifiAPI("/devices/erouters/"+dev.Identification.ID, &details)
+		callUnifiAPI(c, "/devices/erouters/"+dev.Identification.ID, &details)
 		// END OF API CALL 2
 
 		// API CALL 3
 		log.Println("calling API 3 for device", d.Devices[i].Name)
 		var airmaxes []unifiAPIAirmax
-		callUnifiAPI("/devices/airmaxes/"+dev.Identification.ID+"/stations", &airmaxes)
+		callUnifiAPI(c, "/devices/airmaxes/"+dev.Identification.ID+"/stations", &airmaxes)
 		// check if remote mac address is part of our published network
 		for i := range airmaxes {
 			if isRemoteMACpublished(airmaxes[i].DeviceIdentification.MAC, d.Devices) == true {
@@ -270,14 +238,14 @@ func processUNMSAPI() ([]node, []link) {
 	return nodes, links
 }
 
-func processAPIs() {
+func processAPIs(c Config) {
 	tick := time.Tick(delay)
 	for range tick {
 		var nodes []node
 		var links []link
 
-		unmsNodes, unmsLinks := processUNMSAPI()
-		ucNodes, ucLinks := processUcAPIs()
+		unmsNodes, unmsLinks := processUNMSAPI(c)
+		ucNodes, ucLinks := processUcAPIs(c)
 		nodes = append(nodes, unmsNodes...)
 		nodes = append(nodes, ucNodes...)
 		links = append(links, unmsLinks...)
@@ -311,43 +279,41 @@ func getFile(url string) []byte {
 	return byteValue
 }
 
-func getDevices(file string) (devices, error) {
+func getDevices(c Config, file string) (devices, error) {
 	// get devices from JSON file
-	jsonFile := getFile("https://git.freifunk-rhein-sieg.net/Freifunk-Troisdorf/ubnt-freifunk-map-api/raw/branch/master/" + file)
+	jsonFile := getFile(c.Unms.DevicesURL + file)
 
 	// read file to bytes
 	// variable for d
 	var d devices
 	// unmarshal to struct
-	json.Unmarshal(jsonFile, &d)
+	err := json.Unmarshal(jsonFile, &d)
+	if err != nil {
+		fmt.Println("can´t get devices file from " + c.Unms.DevicesURL)
+		log.Fatal(err)
+	}
 	return d, nil
 }
 
-func callUnifiAPI(url string, i interface{}) error {
-	request, err := http.NewRequest(http.MethodGet, baseURL+url, nil)
+func callUnifiAPI(c Config, url string, i interface{}) error {
+	request, err := http.NewRequest(http.MethodGet, c.Unms.UnmsAPIURL+url, nil)
 	if err != nil {
-		return errors.New(fmt.Sprint("can't set request", baseURL+url))
+		return errors.New(fmt.Sprint("can't set request", c.Unms.UnmsAPIURL+url))
 	}
-	request.Header.Set("x-auth-token", *token)
+	request.Header.Set("x-auth-token", c.Unms.APItoken)
 	client := &http.Client{}
 	response, err := client.Do(request)
 	if err != nil {
-		return fmt.Errorf("can't get request %s with x-auth-token %s", baseURL+url, *token)
+		return fmt.Errorf("can't get request %s with x-auth-token %s", c.Unms.UnmsAPIURL+url, c.Unms.APItoken)
+	}
+	if response.StatusCode != 200 {
+		log.Fatalln("Can´t call UNMS API, check token and URL. HTTP Status: ", response.StatusCode)
 	}
-
 	data, err := ioutil.ReadAll(response.Body)
 	defer response.Body.Close()
 	if err != nil {
 		return fmt.Errorf("can't read response body: %+v", response.Body)
 	}
-	// try to fetch errors
-	var a apiResponse
-	json.Unmarshal(data, &a)
-
-	if a.StatusCode != 0 {
-		return fmt.Errorf("got following errorcode from API: %d %s %s", a.StatusCode, a.Error, a.Message)
-	}
-
 	// no error occurred, unmarshal to struct
 	json.Unmarshal(data, &i)
 	return nil

types.go

@@ -10,6 +10,22 @@ import (
 	"time"
 )
 
+type Config struct {
+	Unms struct {
+		Active     string `json:"active"`
+		UnmsAPIURL string `json:"unmsAPIUrl"`
+		APItoken   string `json:"APItoken"`
+		DevicesURL string `json:"devicesURL"`
+	} `json:"unms"`
+	Unifi struct {
+		Active       string `json:"active"`
+		APIURL       string `json:"APIUrl"`
+		User         string `json:"user"`
+		Password     string `json:"password"`
+		UCDevicesURL string `json:"ucDevicesURL"`
+	} `json:"unifi"`
+}
+
 type device struct {
 	Name           string `json:"name"`
 	MAC            string `json:"mac"`
@@ -178,3 +194,35 @@ type ucAPIData struct {
 	baseURL string
 	client  *http.Client
 }
+
+//switch Unifi AP Mod IDs to Names
+func lookupModels(model string) string {
+	switch model {
+	case "BZ2", "U2S48", "U2Sv2":
+		return "Unifi AP"
+	case "BZ2LR", "U2L48", "U2Lv2":
+		return "UniFi AP-LR"
+	case "U7E", "U7Ev2":
+		return "UniFi AP-AC"
+	case "U7HD", "U7SHD":
+		return "UniFi AP-HD"
+	case "UXSDM":
+		return "UniFi AP-BaseStationXG"
+	case "UCMSH":
+		return "AP-MeshXG"
+	case "U7MP":
+		return "AP-AC-Mesh-Pro"
+	case "U7LR":
+		return "UniFi AP-AC-LR"
+	case "U7LT":
+		return "UniFi AP-AC-Lite"
+	case "U7P":
+		return "UniFi AP-Pro"
+	case "U7MSH":
+		return "UniFi AP-AC-Mesh"
+	case "U7PG2":
+		return "UniFi AP-AC-Pro"
+	default:
+		return "Unifi Gerät"
+	}
+}