config-Configuration Service

Used Open Source Libraries

"github.com/joho/godotenv"
"github.com/caarlos0/env/v7"

Service Provider

Service Identifier

"config"

Register Service

app/providers/config

P.Register("config", func(...services.Service) services.Service {
    c := new(configs.Config)
    if err := env.Parse(c); err != nil {
        panic(err)
    }

    return config.Mount(c).Init()
})

Registration Format Refer to Auth Service

Dependent Services

None

ENV Configuration

# Backend environment

APP_NAME=Gower
APP_CLI=gower
APP_VERSION=v0.2.1
APP_KEY=mXQ60jZG61/bfdW2hI8bWJZNrpN1RZhwRjiM7pY7/Nk=
# Three modes: development, production, test
APP_MODE=development
APP_URL=https://localhost
# Domain, related to Cookie settings
APP_DOMAIN=localhost

Actually, the entire .env file is provided by config, otherwise there wouldn’t be so many services depending on config.

Service Interface Methods

// Config configuration content interface
type Config interface {
    Service // General service interface
    
    Set(arg any) Config // Set configuration service
    Get(fieldStr string, args ...any) any  // Get configuration item
}

The actual service provider for the configuration service is the configuration content [carrier].

Usage Examples

Using Get Method

Slower, directly get if possible.

appName := config.Get("app.name", "Gower").(string)

Directly Get

Extremely fast, a few tenths of a nanosecond.

appName := config.App.Name

Benchmark Comparison

Benchmark/BenchmarkConfig-12            1000000000               0.3776 ns/op
Benchmark/BenchmarkConfigGet-12          3089138               388.0 ns/op