joshbetz/config

🛠 A configuration library for Go that parses environment variables, JSON files, and reloads automatically on SIGHUP.

Programming language: Go

License: MIT License

Tags: Configuration    

README

config

A small configuration library for Go that parses environment variables, JSON files, and reloads automatically on SIGHUP.

Example

func main() {
    c := config.New("config.json")

    http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
        var value string
        c.Get("value", &value)
        fmt.Fprintf(w, "Value: %s", value)
    })

    http.ListenAndServe(":3000", nil)
}

API

func New(file string) *Config

Constructor that initializes a Config object and sets up the SIGHUP watcher.

func (config *Config) Get(key string, v interface{}) error

Takes the path to a JSON file, the name of the configuration option, and a pointer to the variable where the config value will be stored. v can be a pointer to a string, bool, or float64.

func (config *Config) Reload()

Reloads the config. Happens automatically on SIGHUP.