Merge pull request #2 from wgarunap/return_configs

[IMPR] ⚡ return errors

README.md

@@ -4,34 +4,44 @@ Library to load env configuration
 ### How to use it
 
 ```go
+package main
+import (
+
+"errors"
+"github.com/caarlos0/env/v6"
+"github.com/wgarunap/goconf"
+"log"
+)
+
 type Conf struct {
 	Name string `env:"MY_NAME"`
 }
 
 var Config Conf
 
-func (Conf) Register() {
-	err := env.Parse(&Config)
-	if err != nil {
-		log.Fatal("error loading stream goconf, ", err)
-	}
+func (Conf) Register()error {
+	return env.Parse(&Config)
 }
 
-func (Conf) Validate() {
+func (Conf) Validate() error{
 	if Config.Name == "" {
-		log.Fatal(`MY_NAME environmental variable cannot be empty`)
+		return errors.New(`MY_NAME environmental variable cannot be empty`)
 	}
+    return nil
 }
 
 func (Conf) Print() interface{} {
 	return Config
 }
 
 func main() {
-	config.Load(
+	err := goconf.Load(
 		new(Conf),
 	)
-    log.Info(`configuration loaded, `,Config.Name)
+    if err != nil{
+           log.Fatal(err)
+    }
+    log.Print(`configuration loaded, `,Config.Name)
 }
 
 ```

example/main.go

@@ -1,9 +1,10 @@
 package main
 
 import (
+	"errors"
 	"github.com/caarlos0/env/v6"
 	"github.com/tryfix/log"
-	"github.com/wgarunap/config"
+	"github.com/wgarunap/goconf"
 	"os"
 )
 
@@ -13,17 +14,15 @@ type Conf struct {
 
 var Config Conf
 
-func (Conf) Register() {
-	err := env.Parse(&Config)
-	if err != nil {
-		log.Fatal("error loading stream goconf, ", err)
-	}
+func (Conf) Register() error {
+	return env.Parse(&Config)
 }
 
-func (Conf) Validate() {
+func (Conf) Validate() error {
 	if Config.Name == "" {
-		log.Fatal(`MY_NAME environmental variable cannot be empty`)
+		return errors.New(`MY_NAME environmental variable cannot be empty`)
 	}
+	return nil
 }
 
 func (Conf) Print() interface{} {
@@ -33,10 +32,12 @@ func (Conf) Print() interface{} {
 func main() {
 	_ = os.Setenv("MY_NAME", "My First Configuration")
 
-	goconf.Load(
+	err := goconf.Load(
 		new(Conf),
 	)
-
+	if err != nil {
+		log.Fatal(err)
+	}
 	if Config.Name != `My First Configuration` {
 		log.Fatal(`error while comparing config`)
 	}

register.go

@@ -9,29 +9,36 @@ import (
 )
 
 type Configer interface {
-	Register()
+	Register() error
 }
 type Validater interface {
-	Validate()
+	Validate() error
 }
 type Printer interface {
 	Print() interface{}
 }
 
-func Load(configs ...Configer) {
+func Load(configs ...Configer) error {
 	for _, c := range configs {
-		c.Register()
+		err := c.Register()
+		if err != nil {
+			return err
+		}
 
 		v, ok := c.(Validater)
 		if ok {
-			v.Validate()
+			err = v.Validate()
+			if err != nil {
+				return err
+			}
 		}
 
 		p, ok := c.(Printer)
 		if ok {
 			printTable(p)
 		}
 	}
+	return nil
 }
 
 func printTable(p Printer) {