Crate dotenv_config
source ·Expand description
dotenv_config provides a way to read configuration from environment variables.
use .env
as config file and parse environments to config struct.
§Usage
§derive EnvConfig
use dotenv_config::EnvConfig;
use dotenvy::dotenv;
#[derive(Debug, EnvConfig)]
struct Config {
#[env_config(default = "192.168.2.1")]
server_addr: String,
server_mode: bool,
#[env_config(name = "ZINC_ENABLE", default = true)]
enable: bool,
#[env_config(name = "ZINC_NUMBER", default = 123456)]
num: Option<i64>,
}
dotenv().ok();
let cfg = Config::init().unwrap();
println!("{:#?}", cfg);
// print config help
let help = Config::get_help();
println!("{:#?}", help);
§attribute env_config
you can use macro attribute set field attribute
- name: change default environment key
- default: if not set, used as default value
§you can though system environments or .env
file config it.
ⓘ
ZINC_ENABLE=false
ZINC_NUMBER=8787878
default load environment key is: structName_fieldName
do UpperSnake, like above struct, default config key is:
ⓘ
CONFIG_SERVER_ADDR
CONFIG_SERVER_MODE
ZINC_ENABLE
ZINC_NUMBER
If you have some problems please go to github create a issue. https://github.com/zinclabs/dotenv-config