forked from TrueCloudLab/restic
f92ecf13c9
github.com/pkg/errors is no longer getting updates, because Go 1.13
went with the more flexible errors.{As,Is} function. Use those instead:
errors from pkg/errors already support the Unwrap interface used by 1.13
error handling. Also:
* check for io.EOF with a straight ==. That value should not be wrapped,
and the chunker (whose error is checked in the cases changed) does not
wrap it.
* Give custom Error methods pointer receivers, so there's no ambiguity
when type-switching since the value type will no longer implement error.
* Make restic.ErrAlreadyLocked private, and rename it to
alreadyLockedError to match the stdlib convention that error type
names end in Error.
* Same with rest.ErrIsNotExist => rest.notExistError.
* Make s3.Backend.IsAccessDenied a private function.
57 lines
1.4 KiB
Go
57 lines
1.4 KiB
Go
package errors
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import (
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"net/url"
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"github.com/cenkalti/backoff/v4"
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"github.com/pkg/errors"
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)
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// New creates a new error based on message. Wrapped so that this package does
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// not appear in the stack trace.
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var New = errors.New
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// Errorf creates an error based on a format string and values. Wrapped so that
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// this package does not appear in the stack trace.
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var Errorf = errors.Errorf
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// Wrap wraps an error retrieved from outside of restic. Wrapped so that this
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// package does not appear in the stack trace.
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var Wrap = errors.Wrap
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// Wrapf returns an error annotating err with the format specifier. If err is
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// nil, Wrapf returns nil.
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var Wrapf = errors.Wrapf
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// WithMessage annotates err with a new message. If err is nil, WithMessage
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// returns nil.
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var WithMessage = errors.WithMessage
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var WithStack = errors.WithStack
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// Cause returns the cause of an error. It will also unwrap certain errors,
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// e.g. *url.Error returned by the net/http client.
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func Cause(err error) error {
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type Causer interface {
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Cause() error
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}
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for {
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switch e := err.(type) {
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case Causer: // github.com/pkg/errors
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err = e.Cause()
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case *backoff.PermanentError:
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err = e.Err
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case *url.Error:
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err = e.Err
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default:
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return err
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}
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}
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}
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// Go 1.13-style error handling.
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func As(err error, tgt interface{}) bool { return errors.As(err, tgt) }
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func Is(x, y error) bool { return errors.Is(x, y) }
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