49 lines
940 B
Go
49 lines
940 B
Go
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package main
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import (
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"fmt"
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"log"
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"strings"
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"time"
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"github.com/caarlos0/env"
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)
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type config struct {
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Home string `env:"HOME"`
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Port int `env:"PORT" envDefault:"3000"`
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IsProduction bool `env:"PRODUCTION"`
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Hosts []string `env:"HOSTS" envSeparator:":"`
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Duration time.Duration `env:"DURATION"`
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ExampleFoo Foo `env:"EXAMPLE_FOO"`
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}
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type Foo struct {
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Name string
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}
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func main() {
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cfg := config{}
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// Parse for built-in types
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if err := env.Parse(&cfg); err != nil {
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log.Fatal("Unable to parse envs: ", err)
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}
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// OR w/ a custom parser for `Foo`
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//
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// if err := env.ParseWithFuncs(&cfg, env.CustomParsers{
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// reflect.TypeOf(Foo{}): fooParser,
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// }); err != nil {
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// log.Fatal("Unable to parse envs: ", err)
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// }
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fmt.Printf("%+v\n", cfg)
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}
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func fooParser(value string) (interface{}, error) {
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return Foo{
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Name: strings.ToUpper(value),
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}, nil
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}
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