Golang Config File Best Practise
In this article, We will show you how to configure the config file in the Go project.
Video
There are many libraries available such as Viper, GoDotEnv, etc But we are using Gonfig.
We are using following different files one for production env and second for development env.
dev_config.json (Development Environment)
{"DB_USERNAME": "test","DB_PASSWORD": "test","DB_PORT": "3306","DB_HOST": "127.0.0.1","DB_NAME": "test"}https://gist.github.com/4957fed751fa843d96ab14a677dc7e59
prod_config.json (Production Environment)
{"DB_USERNAME": "prod_test","DB_PASSWORD": "prod_test","DB_PORT": "3306","DB_HOST": "127.0.0.1","DB_NAME": "prod_test"}https://gist.github.com/1a4acf19065358fc0e0bed5d4756c479
config.go file
package mainimport ("github.com/tkanos/gonfig""fmt")type Configuration struct { DB_USERNAME string DB_PASSWORD string DB_PORT string DB_HOST string DB_NAME string}func GetConfig(params ...string) Configuration { configuration := Configuration{} env := "dev" if len(params) > 0 { env = params[0] } fileName := fmt.Sprintf("./%s_config.json", env) gonfig.GetConf(fileName, &configuration) return configuration}
https://gist.github.com/0d1195748302be30b6e16543138d3251
Here is main.go file
package mainimport "fmt"func main() {fmt.Println("Dev Configuration\n")configuration := GetConfig()fmt.Println(configuration.DB_USERNAME)fmt.Println(configuration.DB_PASSWORD)fmt.Println(configuration.DB_PORT)fmt.Println(configuration.DB_NAME)fmt.Println("\nProd Configuration\n")configuration = GetConfig("prod")fmt.Println(configuration.DB_USERNAME)fmt.Println(configuration.DB_PASSWORD)fmt.Println(configuration.DB_PORT)fmt.Println(configuration.DB_NAME)}
https://gist.github.com/8e3e645c95237a026fbdc3093014f41a
Final output:
Dev Configurationtest
test
test
3306testProd Configurationprod_test
prod_test
3306
prod_test
Try following example code
