Use a config file instead of env vars.

.env.example

@@ -1,17 +0,0 @@
-UNIFI_ADDR="107.170.232.179"
-UNIFI_PORT="8443"
-# Go to Settings -> Admins and add (or use) a read-only user for this.
-UNIFI_USERNAME="username"
-UNIFI_PASSWORD="password"
-
-# Can be 1m15s for 1 minute 0 seconds, 15s for 15 seconds, etc.
-INTERVAL="15s"
-
-INFLUXDB_ADDR="http://hostname:8086"
-INFLUXDB_DATABASE="unifi"
-INFLUXDB_USERNAME="unifi"
-INFLUXDB_PASSWORD="password"
-
-export UNIFI_ADDR UNIFI_PORT UNIFI_USERNAME UNIFI_PASSWORD
-export INTERVAL
-export INFLUXDB_ADDR INFLUXDB_DATABASE INFLUXDB_USERNAME INFLUXDB_PASSWORD

.gitignore

@@ -1,4 +1,4 @@
-.env
+/up.conf
 /unifi-poller
 /*.1.gz
 /*.1

Godeps/Godeps.json

@@ -21,6 +21,26 @@
 			"Comment": "v1.5.0-149-g14dcc5d",
 			"Rev": "14dcc5d6e7a6b15e17aba7b104b8ad0ca6c91ad2"
 		},
+		{
+			"ImportPath": "github.com/naoina/go-stringutil",
+			"Comment": "v0.1.0",
+			"Rev": "6b638e95a32d0c1131db0e7fe83775cbea4a0d0b"
+		},
+		{
+			"ImportPath": "github.com/naoina/toml",
+			"Comment": "v0.1.0",
+			"Rev": "751171607256bb66e64c9f0220c00662420c38e9"
+		},
+		{
+			"ImportPath": "github.com/naoina/toml/ast",
+			"Comment": "v0.1.0",
+			"Rev": "751171607256bb66e64c9f0220c00662420c38e9"
+		},
+		{
+			"ImportPath": "github.com/ogier/pflag",
+			"Comment": "v0.0.1-7-g45c278a",
+			"Rev": "45c278ab3607870051a2ea9040bb85fcb8557481"
+		},
 		{
 			"ImportPath": "github.com/pkg/errors",
 			"Comment": "v0.8.0-6-g2b3a18b",

README.md

@@ -1,20 +1,12 @@
 # Unifi
 
-Collect your Unifi Controller Client data and send it to an InfluxDB instance.
+Collect your Unifi Controller Client data and send it to an InfluxDB instance. Grafana dashboard included.
 
 ![image](https://raw.githubusercontent.com/davidnewhall/unifi/master/grafana-unifi-dashboard.png)
 
-## Deploying
+## Installation
 
-
-Clone the repository and using `.env.example` create your own `.env` file with your Unifi GUI and InfluxDB credentials.
-
-
-Set your environment variables before running:
-
-```
-source .env ; ./unifi-poller
-```
+[See the Wiki!](https://github.com/davidnewhall/unifi-poller/wiki/Installation)
 
 ## Copyright & License
-Copyright © 2016 Garrett Bjerkhoel. See [MIT-LICENSE](http://github.com/dewski/unifi/blob/master/MIT-LICENSE) for details.
+Copyright © 2016 Garrett Bjerkhoel. See [MIT-LICENSE](MIT-LICENSE) for details.

cmd/unifi-poller/config.go

@@ -5,6 +5,9 @@ import (
 	"time"
 )
 
+// Version will be injected at build time.
+var Version = "v0.1"
+
 const (
 	// LoginPath is Unifi Controller Login API Path
 	LoginPath = "/api/login"
@@ -17,6 +20,7 @@ const (
 	// UserGroupPath contains usergroup configurations.
 	UserGroupPath = "/api/s/default/rest/usergroup"
 	// App defaults in case they're missing from the config.
+	defaultConfFile = "/usr/local/etc/unifi-poller/up.conf"
 	defaultInterval = 30 * time.Second
 	defaultInfxDb   = "unifi"
 	defaultInfxUser = "unifi"
@@ -28,13 +32,28 @@ const (
 
 // Config represents the data needed to poll a controller and report to influxdb.
 type Config struct {
-	Interval   time.Duration `json:"interval" toml:"interval" xml:"interval" yaml:"interval"`
-	InfluxURL  string        `json:"influx_url" toml:"influx_addr" xml:"influx_addr" yaml:"influx_addr"`
-	InfluxUser string        `json:"influx_user" toml:"influx_user" xml:"influx_user" yaml:"influx_user"`
-	InfluxPass string        `json:"influx_pass" toml:"influx_pass" xml:"influx_pass" yaml:"influx_pass"`
-	InfluxDB   string        `json:"influx_db" toml:"influx_db" xml:"influx_db" yaml:"influx_db"`
-	UnifiUser  string        `json:"unifi_user" toml:"unifi_user" xml:"unifi_user" yaml:"unifi_user"`
-	UnifiPass  string        `json:"unifi_pass" toml:"unifi_pass" xml:"unifi_pass" yaml:"unifi_pass"`
-	UnifiBase  string        `json:"unifi_url" toml:"unifi_url" xml:"unifi_url" yaml:"unifi_url"`
+	Interval   Dur    `json:"interval" toml:"interval" xml:"interval" yaml:"interval"`
+	InfluxURL  string `json:"influx_url" toml:"influx_url" xml:"influx_url" yaml:"influx_url"`
+	InfluxUser string `json:"influx_user" toml:"influx_user" xml:"influx_user" yaml:"influx_user"`
+	InfluxPass string `json:"influx_pass" toml:"influx_pass" xml:"influx_pass" yaml:"influx_pass"`
+	InfluxDB   string `json:"influx_db" toml:"influx_db" xml:"influx_db" yaml:"influx_db"`
+	UnifiUser  string `json:"unifi_user" toml:"unifi_user" xml:"unifi_user" yaml:"unifi_user"`
+	UnifiPass  string `json:"unifi_pass" toml:"unifi_pass" xml:"unifi_pass" yaml:"unifi_pass"`
+	UnifiBase  string `json:"unifi_url" toml:"unifi_url" xml:"unifi_url" yaml:"unifi_url"`
 	uniClient  *http.Client
 }
+
+// Dur is used to UnmarshalTOML into a time.Duration value.
+type Dur struct {
+	value time.Duration
+}
+
+// UnmarshalTOML parses a duration type from a config file.
+func (v *Dur) UnmarshalTOML(data []byte) error {
+	unquoted := string(data[1 : len(data)-1])
+	dur, err := time.ParseDuration(unquoted)
+	if err == nil {
+		v.value = dur
+	}
+	return err
+}

cmd/unifi-poller/main.go

@@ -4,6 +4,7 @@ import (
 	"bytes"
 	"crypto/tls"
 	"encoding/json"
+	"fmt"
 	"io/ioutil"
 	"log"
 	"net/http"
@@ -12,15 +13,36 @@ import (
 	"time"
 
 	influx "github.com/influxdata/influxdb/client/v2"
+	"github.com/naoina/toml"
+	flg "github.com/ogier/pflag"
 	"github.com/pkg/errors"
 )
 
 func main() {
-	config := GetConfig()
+	flg.Usage = func() {
+		fmt.Println("Usage: unifi-poller [--config=filepath] [--debug] [--version]")
+		flg.PrintDefaults()
+	}
+	configFile := flg.StringP("config", "c", defaultConfFile, "Poller Config File (TOML Format)")
+	debug := flg.BoolP("debug", "D", false, "Turn on the Spam (default false)")
+	version := flg.BoolP("version", "v", false, "Print the version and exit.")
+	flg.Parse()
+	if *version {
+		fmt.Println("unifi-poller version:", Version)
+		os.Exit(0) // don't run anything else.
+	}
+	if log.SetFlags(0); *debug {
+		log.SetFlags(log.Lshortfile | log.Lmicroseconds | log.Ldate)
+	}
+	config, errc := GetConfig(*configFile)
+	if errc != nil {
+		flg.Usage()
+		log.Fatalln("Config Error:", errc)
+	}
 	if err := config.AuthController(); err != nil {
 		log.Fatal(err)
 	}
-	log.Println("Authenticated to Unifi Controller", config.UnifiBase, "as user", config.UnifiUser)
+	log.Println("Authenticated to Unifi Controller @", config.UnifiBase, "as user", config.UnifiUser)
 
 	infdb, err := influx.NewHTTPClient(influx.HTTPConfig{
 		Addr:     config.InfluxURL,
@@ -31,28 +53,30 @@ func main() {
 		log.Fatal(err)
 	}
 	log.Println("Logging Unifi Metrics to InfluXDB @", config.InfluxURL, "as user", config.InfluxUser)
-	log.Println("Polling Unifi Controller, interval:", config.Interval)
+	log.Println("Polling Unifi Controller, interval:", config.Interval.value)
 	config.PollUnifiController(infdb)
 }
 
 // GetConfig parses and returns our configuration data.
-func GetConfig() Config {
-	// TODO: A real config file.
-	interval, err := time.ParseDuration(os.Getenv("INTERVAL"))
-	if err != nil {
-		log.Println("Invalid Interval, defaulting to", defaultInterval)
-		interval = time.Duration(defaultInterval)
-	}
-	return Config{
-		InfluxURL:  os.Getenv("INFLUXDB_URL"),
-		InfluxUser: os.Getenv("INFLUXDB_USERNAME"),
-		InfluxPass: os.Getenv("INFLUXDB_PASSWORD"),
-		InfluxDB:   os.Getenv("INFLUXDB_DATABASE"),
-		UnifiUser:  os.Getenv("UNIFI_USERNAME"),
+func GetConfig(configFile string) (Config, error) {
+	// Preload our defaults.
+	config := Config{
+		InfluxURL:  defaultInfxURL,
+		InfluxUser: defaultInfxUser,
+		InfluxPass: defaultInfxPass,
+		InfluxDB:   defaultInfxDb,
+		UnifiUser:  defaultUnifUser,
 		UnifiPass:  os.Getenv("UNIFI_PASSWORD"),
-		UnifiBase:  "https://" + os.Getenv("UNIFI_ADDR") + ":" + os.Getenv("UNIFI_PORT"),
-		Interval:   interval,
+		UnifiBase:  defaultUnifURL,
+		Interval:   Dur{value: defaultInterval},
 	}
+	if buf, err := ioutil.ReadFile(configFile); err != nil {
+		return config, err
+		// This is where the defaults in the config variable are overwritten.
+	} else if err := toml.Unmarshal(buf, &config); err != nil {
+		return config, errors.Wrap(err, "invalid config")
+	}
+	return config, nil
 }
 
 // AuthController creates a http.Client with authenticated cookies.
@@ -80,7 +104,7 @@ func (c *Config) AuthController() error {
 
 // PollUnifiController runs forever, polling and pushing.
 func (c *Config) PollUnifiController(infdb influx.Client) {
-	ticker := time.NewTicker(c.Interval)
+	ticker := time.NewTicker(c.Interval.value)
 	for range ticker.C {
 		clients, err := c.GetUnifiClients()
 		if err != nil {

up.conf.example

@@ -0,0 +1,15 @@
+# The Unifi Controller only updates traffic stats about every 30 seconds. 
+# Setting this to something lower may lead to "zeros" in your data. You've been warned.
+interval = "30s"
+
+# InfluxDB does not require auth by default, so the user/password are probably unimportant.
+influx_url = "http://127.0.0.1:8086"
+influx_user = "unifi"
+influx_pass = "unifi"
+# Be sure to create this database.
+influx_db = "unifi"
+
+# Make a read-only user in the Unifi Admin Settings.
+unifi_user = "influxdb"
+unifi_pass = "4BB9345C-2341-48D7-99F5-E01B583FF77F"
+unifi_url = "https://127.0.0.1:8443"