env

Tag-based environment configuration for structs.

Installation

$ go get -u github.com/codingconcepts/env

Usage

package main
import (
"fmt""log""time""github.com/codingconcepts/env"
)
typeconfigstruct {
Secret []byte`env:"SECRET" required:"true"`Regionstring`env:"REGION"`Portint`env:"PORT" required:"true"`Peers []string`env:"PEERS"`// you can use `delimiter` tag to specify separator, for example `delimiter:" "` ConnectionTimeout time.Duration`env:"TIMEOUT" default:"10s"`
}
funcmain() {
c:=config{}
iferr:=env.Set(&c); err!=nil {
log.Fatal(err)
}
...
}

$ ID=1 SECRET=shh PORT=1234 PEERS=localhost:1235,localhost:1236 TIMEOUT=5s go run main.go

Supported field types

• bool and []bool
• string and []string
• []byte
• int, int8, int16, int32, int64, []int, []int8, []int16, []int32, and []int64
• uint, uint8, uint16, uint32, uint64, []uint, []uint8, []uint16, []uint32, and []uint64
• float32, float64, []float32, and []float64
• time.Duration and []time.Duration