config

Overview ¶

Package config provides a thin wrapper around cleanenv for loading application configuration from environment variables.

Define a config struct with env tags and call Load:

type Config struct {
    Port     int    `env:"PORT"     env-default:"8080"`
    DSN      string `env:"DATABASE_URL" env-required:"true"`
    LogLevel string `env:"LOG_LEVEL"    env-default:"info"`
}

var cfg Config
if err := config.Load(&cfg); err != nil {
    log.Fatal(err)
}

Package config provides environment-based configuration loading.

Define a config struct with env tags:

type Config struct {
    Port        int    `env:"PORT"         env-default:"8080"`
    DatabaseURL string `env:"DATABASE_URL" env-required:"true"`
    LogLevel    string `env:"LOG_LEVEL"    env-default:"info"`
}

Load from environment:

var cfg Config
if err := config.Load(&cfg); err != nil {
    log.Fatal(err)
}

Load from a .env file (variables in environment take precedence):

if err := config.LoadFile(".env", &cfg); err != nil {
    log.Fatal(err)
}

Supported tag options:

• env:"VAR_NAME" — environment variable name
• env-default:"value" — default value when variable is not set
• env-required:"true" — return error when variable is not set