config

Go Config

configuration library in go

Get it

go get github.com/patrickhuber/go-config

Example

config.yml

yaml: yes

config.json

{"json": "yes"}

config.toml

toml="yes"

.env

dotenv="yes"

package main
import (
    "fmt"
    "log"
    "github.com/patrickhuber/go-config"
    "github.com/patrickhuber/go-cross"
    "github.com/patrickhuber/go-cross/arch"
    "github.com/patrickhuber/go-cross/platform"
)
func main(){
    args := []string{"--hello", "world"}

    // Create a target for cross-platform abstractions
    target := cross.NewTest(platform.Linux, arch.AMD64)
    filesystem := target.FS()

    // Use environment provider from target and set environment variable
    osEnv := target.Env()
    osEnv.Set("env", "yes")

    builder := config.NewBuilder(
        config.NewYaml(filesystem, "config.yml"),
        config.NewJson(filesystem, "config.json"),
        config.NewToml(filesystem, "config.toml"),
        config.NewEnv(osEnv, config.EnvOption{Prefix: "env"}),
        config.NewDotEnv(filesystem, ".env"),
        config.NewFlag([]config.Flag{
            &config.StringFlag{
                Name: "hello",
            },
        }, args),
    )
    
    root, err := builder.Build()
    if err != nil{
        log.Fatal(err)
    }

    cfg, err := root.Get(&config.GetContext{})
    if err != nil {
        log.Fatal(err)
    } else {
        log.Printf("%v", cfg)
    }
}

output

yaml: yes
json: yes
toml: yes
dotenv: yes
env: yes