40 lines
783 B
Go
40 lines
783 B
Go
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package app
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import "errors"
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// PermanentError indicates a failure that should not be retried.
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type PermanentError struct {
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err error
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}
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// Error implements the error interface.
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func (e *PermanentError) Error() string {
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if e == nil || e.err == nil {
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return ""
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}
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return e.err.Error()
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}
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// Unwrap allows errors.Unwrap/Is/As to inspect the underlying error.
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func (e *PermanentError) Unwrap() error {
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if e == nil {
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return nil
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}
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return e.err
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}
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// Permanent wraps err to mark it as non-retriable.
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func Permanent(err error) error {
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if err == nil {
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return nil
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}
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return &PermanentError{err: err}
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}
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// IsPermanent reports whether the error or any wrapped error is permanent.
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func IsPermanent(err error) bool {
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var target *PermanentError
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return errors.As(err, &target)
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}
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