/
generics.go
90 lines (81 loc) · 1.71 KB
/
generics.go
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/*
Copyright © 2022 THINKINGATOMS LLC <atom@thinkingatoms.com>
*/
package ez
import (
"encoding/json"
"github.com/rs/zerolog/log"
"net/http"
)
//func Chain[A any, B any](f func(A) (B, error)) func(A, error) (B, error) {
// return func(a A, err error) (B, error) {
// if err != nil {
// return nil, err
// }
// return f(a)
// }
//}
//
//func Chain2[A any, B any, C any](g func(*B) (*C, error), f func(*A) (*B, error)) func(A, error) (*C, error) {
// return func(a A, err error) (*C, error) {
// if err != nil {
// return nil, err
// }
// b, berr := f(&a)
// if berr != nil {
// return nil, berr
// }
// return g(b)
// }
//}
//goland:noinspection GoUnusedExportedFunction
func ReturnOrPanic[K any](k K, err error) K {
if err != nil {
panic(err)
}
return k
}
//goland:noinspection GoUnusedExportedFunction
func ReturnOrLog[K any](k K, err error) K {
if err != nil {
log.Fatal().Err(err).Msg(err.Error())
}
return k
}
func PanicIfErr(err error) {
if err != nil {
panic(err)
}
}
func MapToObject(m map[string]any, o any) error {
marshal, err := json.Marshal(m)
if err != nil {
return err
}
if err := json.Unmarshal(marshal, o); err != nil {
return err
}
return nil
}
func DoOr500[K any](w http.ResponseWriter, r *http.Request,
handler func(w http.ResponseWriter, r *http.Request, k K),
) func(k K, err error) {
return func(k K, err error) {
if err != nil {
InternalServerErrorHandler(w, r, err)
return
}
handler(w, r, k)
}
}
func DoOr401[K any](w http.ResponseWriter, r *http.Request,
handler func(w http.ResponseWriter, r *http.Request, k K),
) func(k K, err error) {
return func(k K, err error) {
if err != nil {
AccessDeniedHandler(w, r, err)
return
}
handler(w, r, k)
}
}