my-log/formatters/new.go

41 lines
844 B
Go

package formatters
import (
"context"
"fmt"
"codeberg.org/danjones000/my-log/config"
"github.com/spf13/viper"
)
type formatMaker func(config *viper.Viper) (Formatter, error)
var formatterMap = map[string]formatMaker{
"plain": newPlain,
"json": newJson,
"zero": newNull,
}
func Preferred(ctx context.Context) (f Formatter, err error) {
_, c := config.RetrieveFromContext(ctx)
return New(ctx, c.Formatters.Preferred)
}
func New(ctx context.Context, kind string) (f Formatter, err error) {
v, _ := config.RetrieveFromContext(ctx)
formatterConf := v.Sub("formatters." + kind)
if maker, ok := formatterMap[kind]; ok {
return maker(formatterConf)
}
return nil, fmt.Errorf("unimplemented format: %s", kind)
}
func Kinds() []string {
r := []string{}
for kind, _ := range formatterMap {
r = append(r, kind)
}
return r
}