Implemented omitempty to config parser for completely dynamic config loading

Author: PythonHacker24

cmd/laclm/main.go

@@ -31,7 +31,7 @@ func exec() error {
 
 	err := godotenv.Load()
 	if err != nil {
-		fmt.Println("No .env file found, continuing with system environment variables")
+		fmt.Println("No .env file found, continuing with system environment variables\n")
 	}
 
 	/* setting up cobra for cli interactions */

config.yaml

@@ -2,7 +2,7 @@
 
 # backend environment configs
 app:
-  name: laclm-dev
+#  name: laclm-dev
   version: v1.1
   debug_mode: true 
 

config/app.go

@@ -2,9 +2,9 @@ package config
 
 /* app parameters */
 type App struct {
-	Name        string `yaml:"name"`
-	Version     string `yaml:"version"`
-	DebugMode   bool   `yaml:"debug_mode"`
+	Name        string `yaml:"name,omitempty"`
+	Version     string `yaml:"version,omitempty"`
+	DebugMode   bool   `yaml:"debug_mode,omitempty"`
 }
 
 /* normalization function */

config/authentication.go

@@ -8,15 +8,15 @@ import (
 
 /* authentication parameters */
 type Authentication struct {
-	LDAPConfig		LDAPConfig 	`yaml:"ldap"`
+	LDAPConfig		LDAPConfig 	`yaml:"ldap,omitempty"`
 }
 
 /* ldap authentication parameters */
 type LDAPConfig struct {
-	TLS             bool		`yaml:"tls"`
-	Address			string 		`yaml:"address"`
-	AdminDN 		string		`yaml:"admin_dn"`
-	AdminPassword	string		`yaml:"admin_password"`
+	TLS             bool		`yaml:"tls,omitempty"`
+	Address			string 		`yaml:"address,omitempty"`
+	AdminDN 		string		`yaml:"admin_dn,omitempty"`
+	AdminPassword	string		`yaml:"admin_password,omitempty"`
 }
 
 /* normalization function */

config/backend_security.go

@@ -8,8 +8,8 @@ import (
 
 /* backend security configs */
 type BackendSecurity struct {
-	JWTTokenSecret 	string 	`yaml:"jwt_secret_token"`
-	JWTExpiry 		int 	`yaml:"jwt_expiry"`
+	JWTTokenSecret 	string 	`yaml:"jwt_secret_token,omitempty"`
+	JWTExpiry 		int 	`yaml:"jwt_expiry,omitempty"`
 }
 
 /* normalization function */

config/config.go

@@ -7,13 +7,13 @@ var BackendConfig Config
 
 /* complete yaml config for global usage */
 type Config struct {
-	AppInfo           App                 `yaml:"app"`
-	Server            Server              `yaml:"server"`
-	Database          Database            `yaml:"database"`
-	Logging           Logging             `yaml:"logging"`
-	FileSystemServers []FileSystemServers `yaml:"filesystem_servers"`
-	BackendSecurity   BackendSecurity     `yaml:"backend_security"`
-	Authentication	  Authentication	  `yaml:"authentication"`
+	AppInfo           App                 `yaml:"app,omitempty"`
+	Server            Server              `yaml:"server,omitempty"`
+	Database          Database            `yaml:"database,omitempty"`
+	Logging           Logging             `yaml:"logging,omitempty"`
+	FileSystemServers []FileSystemServers `yaml:"filesystem_servers,omitempty"`
+	BackendSecurity   BackendSecurity     `yaml:"backend_security,omitempty"`
+	Authentication	  Authentication	  `yaml:"authentication,omitempty"`
 }
 
 /* complete config normalizer function */

config/database.go

@@ -9,14 +9,14 @@ import (
 
 /* database parameters */
 type Database struct {
-	TransactionLogRedis TransactionLogRedis `yaml:"transaction_log_redis"`
+	TransactionLogRedis TransactionLogRedis `yaml:"transaction_log_redis,omitempty"`
 }
 
 /* transaction log redis parameters */
 type TransactionLogRedis struct {
-	Address  string `yaml:"address"`
-	Password string `yaml:"password"`
-	DB       int    `yaml:"db"`
+	Address  string `yaml:"address,omitempty"`
+	Password string `yaml:"password,omitempty"`
+	DB       int    `yaml:"db,omitempty"`
 }
 
 /* normalization function */

config/filesystem.go

@@ -8,15 +8,15 @@ import (
 
 /* file system server parameters */
 type FileSystemServers struct {
-	Path   string  `yaml:"path"`
-	Method string  `yaml:"method"`
+	Path   string  `yaml:"path,omitempty"`
+	Method string  `yaml:"method,omitempty"`
 	Remote *Remote `yaml:"remote,omitempty"`
 }
 
 /* remote parameters for file system server with laclm daemons installed */
 type Remote struct {
-	Host string `yaml:"host"`
-	Port int    `yaml:"port"`
+	Host string `yaml:"host,omitempty"`
+	Port int    `yaml:"port,omitempty"`
 }
 
 /* normalization function */

config/logging.go

@@ -2,11 +2,11 @@ package config
 
 /* logging parameters */
 type Logging struct {
-	File       string `yaml:"file"`
-	MaxSize    int    `yaml:"max_size"`
-	MaxBackups int    `yaml:"max_backups"`
-	MaxAge     int    `yaml:"max_age"`
-	Compress   bool   `yaml:"compress"`
+	File       string `yaml:"file,omitempty"`
+	MaxSize    int    `yaml:"max_size,omitempty"`
+	MaxBackups int    `yaml:"max_backups,omitempty"`
+	MaxAge     int    `yaml:"max_age,omitempty"`
+	Compress   bool   `yaml:"compress,omitempty"`
 }
 
 /* normalization function */

config/server.go

@@ -2,8 +2,8 @@ package config
 
 /* server deployment parameters */
 type Server struct {
-	Host string `yaml:"host"`
-	Port int    `yaml:"port"`
+	Host string `yaml:"host,omitempty"`
+	Port int    `yaml:"port,omitempty"`
 }
 
 /* normalization function */