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util/vizerror: add ErrorWithInternal type and func WithInternal

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Updates tailscale/corp#23781

Change-Id: I072d0169703aefb0f37b1fa715881f1ccb561f03
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This commit is contained in:
Brad Fitzpatrick 2024-10-09 09:25:07 -07:00
parent f6d4d03355
commit 87c0eadf57
1 changed files with 18 additions and 0 deletions
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18
util/vizerror/vizerror.go
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@ -48,3 +48,21 @@ func As(err error) (e Error, ok bool) {
ok = errors.As(err, &e)
return
}
// ErrorWithInternal is a tuple of a user-visible error along with
// an internal error that should not be shown to users.
type ErrorWithInternal struct {
UserVisibleErr Error // user-visible half
InternalErr error // internal error not to be shown to users
}
func (e ErrorWithInternal) Error() string {
return e.UserVisibleErr.Error()
}
// WithInternal returns a new ErrorWithInternal combining a user-visible error
// string and an internal error to pass around for internal logging but not
// to be shown to end users.
func WithInternal(visibleError string, internalErr error) error {
return ErrorWithInternal{Error{errors.New(visibleError)}, internalErr}
}