Using flagger for config path getting

So, now we can deploy via go get and handle config in separate folder.

Gopkg.lock

@@ -55,6 +55,12 @@
   packages = ["."]
   revision = "eb3733d160e74a9c7e442f435eb3bea458e1d19f"
 
+[[projects]]
+  branch = "master"
+  name = "lab.pztrn.name/golibs/flagger"
+  packages = ["."]
+  revision = "5cf6a6dd8fe8a4f37d1bb1e3deb5121c6e923668"
+
 [[projects]]
   branch = "master"
   name = "lab.pztrn.name/golibs/mogrus"
@@ -64,6 +70,6 @@
 [solve-meta]
   analyzer-name = "dep"
   analyzer-version = 1
-  inputs-digest = "3e9df6d446d8789d138790622cf19935d4331f9903af640d13654c07b9f433a5"
+  inputs-digest = "72b8805a04554297ce6fcb28ecaad016e3398624e90621de1b067cfe2f662e40"
   solver-name = "gps-cdcl"
   solver-version = 1

cmd/i2_bot/i2_bot.go

@@ -28,6 +28,7 @@ var (
 func main() {
 	c := appcontext.New()
 	c.Init()
+
 	router.New(c)
 	migrations.New(c)
 	c.RunDatabaseMigrations()

lib/appcontext/appcontext.go

@@ -20,12 +20,14 @@ import (
 	"lab.pztrn.name/fat0troll/i2_bot/lib/talkers/talkersinterface"
 	"lab.pztrn.name/fat0troll/i2_bot/lib/users/usersinterface"
 	"lab.pztrn.name/fat0troll/i2_bot/lib/welcomer/welcomerinterface"
+	"lab.pztrn.name/golibs/flagger"
 	"lab.pztrn.name/golibs/mogrus"
 	"os"
 )
 
 // Context is an application context struct
 type Context struct {
+	StartupFlags *flagger.Flagger
 	Cfg          *config.Config
 	Log          *mogrus.LoggerHandler
 	Bot          *tgbotapi.BotAPI
@@ -46,27 +48,52 @@ type Context struct {
 
 // Init is a initialization function for context
 func (c *Context) Init() {
-	c.Cfg = config.New()
-	c.Cfg.Init()
-
 	l := mogrus.New()
 	l.Initialize()
 
 	log := l.CreateLogger("i2_bot")
 	log.CreateOutput("stdout", os.Stdout, true, "debug")
+	c.Log = log
+
+	c.StartupFlags = flagger.New(c.Log)
+	c.StartupFlags.Initialize()
+
+	// Adding available startup flags here
+	configFlag := flagger.Flag{}
+	configFlag.Name = "config"
+	configFlag.Description = "Configuration file path"
+	configFlag.Type = "string"
+	configFlag.DefaultValue = "./config.yaml"
+	err := c.StartupFlags.AddFlag(&configFlag)
+	if err != nil {
+		c.Log.Errorln(err)
+	}
+	c.StartupFlags.Parse()
+
+	configPath, err := c.StartupFlags.GetStringValue("config")
+	if err != nil {
+		c.Log.Errorln(err)
+		c.Log.Fatal("Can't get config file parameter from command line. Exiting.")
+	}
+
+	c.Cfg = config.New()
+	c.Cfg.Init(c.Log, configPath)
 
 	logFile, err := os.OpenFile(c.Cfg.Logs.LogPath, os.O_RDWR|os.O_APPEND|os.O_CREATE, 0660)
 	if err != nil {
 		log.Fatalln(err)
 	}
-	log.CreateOutput("file="+c.Cfg.Logs.LogPath, logFile, true, "debug")
-
-	c.Log = log
+	c.Log.CreateOutput("file="+c.Cfg.Logs.LogPath, logFile, true, "debug")
 
 	c.Bot = connections.BotInit(c.Cfg, c.Log)
 	c.Db = connections.DBInit(c.Cfg, c.Log)
 }
 
+// InitializeStartupFlags gives information about available startup flags
+func (c *Context) InitializeStartupFlags() {
+
+}
+
 // RegisterRouterInterface registering router interface in application
 func (c *Context) RegisterRouterInterface(ri routerinterface.RouterInterface) {
 	c.Router = ri

lib/config/config.go

@@ -6,10 +6,11 @@ package config
 import (
 	"gopkg.in/yaml.v2"
 	"io/ioutil"
-	"log"
+	"lab.pztrn.name/golibs/mogrus"
 	"path/filepath"
 )
 
+// VERSION is the urrent bot's version
 const VERSION = "0.51"
 
 // DatabaseConnection handles database connection settings in config.yaml
@@ -45,11 +46,13 @@ type Config struct {
 }
 
 // Init is a configuration initializer
-func (c *Config) Init() {
-	fname, _ := filepath.Abs("./config.yml")
+func (c *Config) Init(log *mogrus.LoggerHandler, configPath string) {
+	fname, _ := filepath.Abs(configPath)
 	yamlFile, yerr := ioutil.ReadFile(fname)
 	if yerr != nil {
 		log.Fatal("Can't read config file")
+	} else {
+		log.Info("Using " + configPath + " as config file.")
 	}
 
 	yperr := yaml.Unmarshal(yamlFile, c)