Redo auth flags

auth/flags.go

@@ -0,0 +1,27 @@
+package auth
+
+import (
+	"github.com/namsral/flag"
+	"github.com/pkg/errors"
+)
+
+type (
+	configuration struct {
+		jwtSecret string
+	}
+)
+
+var config configuration
+
+func (c configuration) validate() error {
+	if c.jwtSecret == "" {
+		return errors.New("JWT Secret not set for AUTH")
+	}
+
+	return nil
+}
+
+// Flags should be called from main to register flags
+func Flags() {
+	flag.StringVar(&config.jwtSecret, "auth-jwt-secret", "", "JWT Secret")
+}

auth/jwt.go

@@ -11,10 +11,14 @@ type jwt struct {
 	tokenAuth *jwtauth.JWTAuth
 }
 
-func JWT(secret []byte) *jwt {
-	jwt := &jwt{tokenAuth: jwtauth.New("HS256", secret, nil)}
+func JWT() (*jwt, error) {
+	if err := config.validate(); err != nil {
+		return nil, err
+	}
 
-	return jwt
+	jwt := &jwt{tokenAuth: jwtauth.New("HS256", []byte(config.jwtSecret), nil)}
+
+	return jwt, nil
 }
 
 // Verifies JWT and stores it into context