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error.go
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error.go
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package tanukirpc
import (
"log/slog"
"net/http"
)
type ErrorWithStatus interface {
error
Status() int
}
type errorWithStatus struct {
status int
err error
}
func (e *errorWithStatus) Error() string {
return e.err.Error()
}
func (e *errorWithStatus) Status() int {
return e.status
}
func (e *errorWithStatus) Unwrap() error {
return e.err
}
func WrapErrorWithStatus(status int, err error) error {
return &errorWithStatus{status: status, err: err}
}
type ErrorMessage struct {
Error ErrorBody `json:"error"`
}
type ErrorBody struct {
Message string `json:"message"`
}
type ErrorHooker interface {
OnError(w http.ResponseWriter, req *http.Request, logger *slog.Logger, codec Codec, err error)
}
type errorHooker struct{}
func (e *errorHooker) OnError(w http.ResponseWriter, req *http.Request, logger *slog.Logger, codec Codec, err error) {
if ews, ok := err.(ErrorWithStatus); ok {
w.WriteHeader(ews.Status())
} else {
w.WriteHeader(http.StatusInternalServerError)
logger.ErrorContext(req.Context(), "ocurred internal server error", slog.Any("error", err))
}
codec.Encode(w, req, ErrorMessage{Error: ErrorBody{Message: err.Error()}})
}