From 7f57dc09d3bcbc49fcb33efe68185436f11cda33 Mon Sep 17 00:00:00 2001
From: Vasiliy Tolstov <v.tolstov@unistack.org>
Date: Wed, 15 Mar 2023 22:51:40 +0300
Subject: [PATCH] config: fix Default funcs

Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>
---
 config/config.go | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/config/config.go b/config/config.go
index 6469cbc7..917a6b2b 100644
--- a/config/config.go
+++ b/config/config.go
@@ -126,6 +126,9 @@ func Validate(ctx context.Context, cfg interface{}) error {
 var (
 	// DefaultBeforeLoad default func that runs before config Load
 	DefaultBeforeLoad = func(ctx context.Context, c Config) error {
+		if c.Options().BeforeLoad == nil {
+			return nil
+		}
 		for _, fn := range c.Options().BeforeLoad {
 			if err := fn(ctx, c); err != nil {
 				c.Options().Logger.Errorf(ctx, "%s BeforeLoad err: %v", c.String(), err)
@@ -138,6 +141,9 @@ var (
 	}
 	// DefaultAfterLoad default func that runs after config Load
 	DefaultAfterLoad = func(ctx context.Context, c Config) error {
+		if c.Options().AfterLoad == nil {
+			return nil
+		}
 		for _, fn := range c.Options().AfterLoad {
 			if err := fn(ctx, c); err != nil {
 				c.Options().Logger.Errorf(ctx, "%s AfterLoad err: %v", c.String(), err)
@@ -150,6 +156,9 @@ var (
 	}
 	// DefaultBeforeSave default func that runs befora config Save
 	DefaultBeforeSave = func(ctx context.Context, c Config) error {
+		if c.Options().BeforeSave == nil {
+			return nil
+		}
 		for _, fn := range c.Options().BeforeSave {
 			if err := fn(ctx, c); err != nil {
 				c.Options().Logger.Errorf(ctx, "%s BeforeSave err: %v", c.String(), err)
@@ -162,6 +171,9 @@ var (
 	}
 	// DefaultAfterSave default func that runs after config Save
 	DefaultAfterSave = func(ctx context.Context, c Config) error {
+		if c.Options().AfterSave == nil {
+			return nil
+		}
 		for _, fn := range c.Options().AfterSave {
 			if err := fn(ctx, c); err != nil {
 				c.Options().Logger.Errorf(ctx, "%s AfterSave err: %v", c.String(), err)
@@ -174,6 +186,9 @@ var (
 	}
 	// DefaultBeforeInit default func that runs befora config Init
 	DefaultBeforeInit = func(ctx context.Context, c Config) error {
+		if c.Options().BeforeInit == nil {
+			return nil
+		}
 		for _, fn := range c.Options().BeforeInit {
 			if err := fn(ctx, c); err != nil {
 				c.Options().Logger.Errorf(ctx, "%s BeforeInit err: %v", c.String(), err)
@@ -186,6 +201,9 @@ var (
 	}
 	// DefaultAfterInit default func that runs after config Init
 	DefaultAfterInit = func(ctx context.Context, c Config) error {
+		if c.Options().AfterInit == nil {
+			return nil
+		}
 		for _, fn := range c.Options().AfterSave {
 			if err := fn(ctx, c); err != nil {
 				c.Options().Logger.Errorf(ctx, "%s AfterInit err: %v", c.String(), err)