koanfenv provides callbacks which convert environment variables to koanf
keys. These callbacks are used for env.Provider
.
config := struct{
Foo1 string `koanf:"foo1" env:"APP_FOO1"`
}{}
k := koanf.New(".")
if err := k.Load(env.Provider("APP_", ".", koanfenv.ByStruct(&config)), nil); err != nil {
log.Fatal(err)
}m := map[string]string{
"APP_FOO1": "foo1",
}
k := koanf.New(".")
if err := k.Load(env.Provider("APP_", ".", koanfenv.ByMap(m)), nil); err != nil {
log.Fatal(err)
}