forked from mirrors/gotosocial
d8d5818b47
* add error value wrapping, include status code / not found flags from transport errors, update error usages Signed-off-by: kim <grufwub@gmail.com> * add code commenting for gtserror functions Signed-off-by: kim <grufwub@gmail.com> --------- Signed-off-by: kim <grufwub@gmail.com>
60 lines
1.9 KiB
Go
60 lines
1.9 KiB
Go
/*
|
|
GoToSocial
|
|
Copyright (C) 2021-2023 GoToSocial Authors admin@gotosocial.org
|
|
|
|
This program is free software: you can redistribute it and/or modify
|
|
it under the terms of the GNU Affero General Public License as published by
|
|
the Free Software Foundation, either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU Affero General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Affero General Public License
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
package gtserror
|
|
|
|
import (
|
|
"codeberg.org/gruf/go-errors/v2"
|
|
)
|
|
|
|
// package private error key type.
|
|
type errkey int
|
|
|
|
const (
|
|
// error value keys.
|
|
_ errkey = iota
|
|
statusCodeKey
|
|
notFoundKey
|
|
)
|
|
|
|
// StatusCode checks error for a stored status code value. For example
|
|
// an error from an outgoing HTTP request may be stored, or an API handler
|
|
// expected response status code may be stored.
|
|
func StatusCode(err error) int {
|
|
i, _ := errors.Value(err, statusCodeKey).(int)
|
|
return i
|
|
}
|
|
|
|
// WithStatusCode will wrap the given error to store provided status code,
|
|
// returning wrapped error. See StatusCode() for example use-cases.
|
|
func WithStatusCode(err error, code int) error {
|
|
return errors.WithValue(err, statusCodeKey, code)
|
|
}
|
|
|
|
// NotFound checks error for a stored "not found" flag. For example
|
|
// an error from an outgoing HTTP request due to DNS lookup.
|
|
func NotFound(err error) bool {
|
|
_, ok := errors.Value(err, notFoundKey).(struct{})
|
|
return ok
|
|
}
|
|
|
|
// SetNotFound will wrap the given error to store a "not found" flag,
|
|
// returning wrapped error. See NotFound() for example use-cases.
|
|
func SetNotFound(err error) error {
|
|
return errors.WithValue(err, notFoundKey, struct{}{})
|
|
}
|