go-config

Utility package to read the configuration.

Installation

go get -u github.com/tiny-go/config

How to use?

1. Import package github.com/tiny-go/config
2. Create a config struct
3. Set default values (if needed) for struct fields
4. Pass the pointer to a struct to Init() func
5. Check error and enjoy

Supported data types

• bool
• int, []int
• uint, []uint
• int64, []int64
• uint64, []uint64
• float64, []float64
• time.Duration, []time.Duration
• string, []string

Priorities

1. flags - hi
2. env vars - mid
3. defaults - low

Examples

package main

import (
	"fmt"

	"github.com/tiny-go/config"
)

type Config struct {
	Boolean bool `default:"true"`
	Nested  struct {
		Integer int     `default:"42"`
		Float64 float64 `default:"3.14"`
		String  string  `default:"text"`
	}
}

func main() {
	// create an instance
	conf := &Config{}
	// pass to Init() func and check the error
	if err := config.Init(conf, "MYAPP"); err != nil {
		fmt.Println(err)
	}
	// use your config
	fmt.Println(conf)
}