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https://github.com/go-gitea/gitea
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716fcfcf72
A lot of our code is repeatedly testing if individual errors are specific types of Not Exist errors. This is repetitative and unnecesary. `Unwrap() error` provides a common way of labelling an error as a NotExist error and we can/should use this. This PR has chosen to use the common `io/fs` errors e.g. `fs.ErrNotExist` for our errors. This is in some ways not completely correct as these are not filesystem errors but it seems like a reasonable thing to do and would allow us to simplify a lot of our code to `errors.Is(err, fs.ErrNotExist)` instead of `package.IsErr...NotExist(err)` I am open to suggestions to use a different base error - perhaps `models/db.ErrNotExist` if that would be felt to be better. Signed-off-by: Andrew Thornton <art27@cantab.net> Co-authored-by: delvh <dev.lh@web.de>
75 lines
1.6 KiB
Go
75 lines
1.6 KiB
Go
// Copyright 2021 The Gitea Authors. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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package db
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import (
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"fmt"
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"code.gitea.io/gitea/modules/util"
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)
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// ErrCancelled represents an error due to context cancellation
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type ErrCancelled struct {
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Message string
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}
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// IsErrCancelled checks if an error is a ErrCancelled.
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func IsErrCancelled(err error) bool {
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_, ok := err.(ErrCancelled)
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return ok
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}
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func (err ErrCancelled) Error() string {
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return "Cancelled: " + err.Message
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}
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// ErrCancelledf returns an ErrCancelled for the provided format and args
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func ErrCancelledf(format string, args ...interface{}) error {
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return ErrCancelled{
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fmt.Sprintf(format, args...),
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}
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}
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// ErrSSHDisabled represents an "SSH disabled" error.
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type ErrSSHDisabled struct{}
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// IsErrSSHDisabled checks if an error is a ErrSSHDisabled.
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func IsErrSSHDisabled(err error) bool {
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_, ok := err.(ErrSSHDisabled)
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return ok
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}
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func (err ErrSSHDisabled) Error() string {
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return "SSH is disabled"
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}
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// ErrNotExist represents a non-exist error.
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type ErrNotExist struct {
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Resource string
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ID int64
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}
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// IsErrNotExist checks if an error is an ErrNotExist
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func IsErrNotExist(err error) bool {
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_, ok := err.(ErrNotExist)
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return ok
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}
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func (err ErrNotExist) Error() string {
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name := "record"
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if err.Resource != "" {
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name = err.Resource
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}
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if err.ID != 0 {
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return fmt.Sprintf("%s does not exist [id: %d]", name, err.ID)
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}
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return fmt.Sprintf("%s does not exist", name)
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}
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// Unwrap unwraps this as a ErrNotExist err
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func (err ErrNotExist) Unwrap() error {
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return util.ErrNotExist
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}
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