Files
Gitea/modules/util/error.go
T
silverwind 32728fc581 chore: misc go 1.27 tweaks (#39069)
Follow-up to https://github.com/go-gitea/gitea/pull/39068, which
disabled `modernize` entirely.

- re-enable `modernize`, with only the new `embedlit` rule disabled. It
flattens embedded struct literals across ~145 files, and orphans imports
in 6 of them that the fixer does not remove
- apply the rest of the suite: `errors.AsType`, `reflect.TypeAssert`,
`strings.Cut`, and dropping the legacy import comment
- use the new stdlib `uuid` package, `github.com/google/uuid` becomes
indirect
- use `strings.CutLast` in place of manual `LastIndex` slicing in label
scopes, email domains and the diff tree list
- take the header lint skip dirs from the `go.mod` `ignore` directive
and skip dot-directories, instead of hardcoding the list

Assisted-by: Claude Code:claude-opus-5
2026-08-24 18:26:10 +00:00

107 lines
3.6 KiB
Go

// Copyright 2022 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package util
import (
"errors"
"fmt"
"html/template"
)
// Common Errors forming the base of our error system
//
// Many Errors returned by Gitea can be tested against these errors using "errors.Is".
var (
ErrInvalidArgument = errors.New("invalid argument") // also implies HTTP 400
ErrPermissionDenied = errors.New("permission denied") // also implies HTTP 403
ErrNotExist = errors.New("resource does not exist") // also implies HTTP 404
ErrAlreadyExist = errors.New("resource already exists") // also implies HTTP 409
ErrContentTooLarge = errors.New("content exceeds limit") // also implies HTTP 413
// ErrUnprocessableContent implies HTTP 422, the syntax of the request content is correct,
// but the server is unable to process the contained instructions
ErrUnprocessableContent = errors.New("unprocessable content")
)
// errorWrapper provides a simple wrapper for a wrapped error where the wrapped error message plays no part in the error message
// Especially useful for "untyped" errors created with "errors.New(…)" that can be classified as 'invalid argument', 'permission denied', 'exists already', or 'does not exist'
type errorWrapper struct {
Message string
Err error
}
// Error returns the message
func (w errorWrapper) Error() string {
return w.Message
}
// Unwrap returns the underlying error
func (w errorWrapper) Unwrap() error {
return w.Err
}
// ErrorWrap returns an error that formats as the given text but unwraps as the provided error
func ErrorWrap(unwrap error, message string, args ...any) error {
if len(args) == 0 {
return errorWrapper{Message: message, Err: unwrap}
}
return errorWrapper{Message: fmt.Sprintf(message, args...), Err: unwrap}
}
// NewInvalidArgumentErrorf returns an error that formats as the given text but unwraps as an ErrInvalidArgument
func NewInvalidArgumentErrorf(message string, args ...any) error {
return ErrorWrap(ErrInvalidArgument, message, args...)
}
// NewPermissionDeniedErrorf returns an error that formats as the given text but unwraps as an ErrPermissionDenied
func NewPermissionDeniedErrorf(message string, args ...any) error {
return ErrorWrap(ErrPermissionDenied, message, args...)
}
// NewAlreadyExistErrorf returns an error that formats as the given text but unwraps as an ErrAlreadyExist
func NewAlreadyExistErrorf(message string, args ...any) error {
return ErrorWrap(ErrAlreadyExist, message, args...)
}
// NewNotExistErrorf returns an error that formats as the given text but unwraps as an ErrNotExist
func NewNotExistErrorf(message string, args ...any) error {
return ErrorWrap(ErrNotExist, message, args...)
}
// ErrorTranslatable wraps an error with translation information
type ErrorTranslatable interface {
error
Unwrap() error
Translate(ErrorLocaleTranslator) template.HTML
}
type errorTranslatableWrapper struct {
err error
trKey string
trArgs []any
}
type ErrorLocaleTranslator interface {
Tr(key string, args ...any) template.HTML
}
func (w *errorTranslatableWrapper) Error() string { return w.err.Error() }
func (w *errorTranslatableWrapper) Unwrap() error { return w.err }
func (w *errorTranslatableWrapper) Translate(t ErrorLocaleTranslator) template.HTML {
return t.Tr(w.trKey, w.trArgs...)
}
func ErrorWrapTranslatable(err error, trKey string, trArgs ...any) ErrorTranslatable {
return &errorTranslatableWrapper{err: err, trKey: trKey, trArgs: trArgs}
}
func ErrorAsTranslatable(err error) ErrorTranslatable {
if e, ok := errors.AsType[*errorTranslatableWrapper](err); ok {
return e
}
return nil
}