58 lines
1.2 KiB
Go
58 lines
1.2 KiB
Go
package util
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import (
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"errors"
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"fmt"
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)
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// Code is a string error category used across the application.
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type Code string
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const (
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CodeBadRequest Code = "bad_request"
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CodeNotFound Code = "not_found"
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CodeConflict Code = "conflict"
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CodeInternal Code = "internal"
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)
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// AppError is a typed error carrying a Code and optional wrapped error.
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type AppError struct {
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Code Code
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Message string
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Err error
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}
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func (e *AppError) Error() string {
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if e.Err != nil {
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return fmt.Sprintf("%s: %s: %v", e.Code, e.Message, e.Err)
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}
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return fmt.Sprintf("%s: %s", e.Code, e.Message)
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}
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func (e *AppError) Unwrap() error {
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return e.Err
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}
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// New returns a new AppError with the given code and message.
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func New(code Code, message string) error {
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return &AppError{Code: code, Message: message}
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}
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// Wrap returns a new AppError wrapping err with the given code and message.
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func Wrap(code Code, message string, err error) error {
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return &AppError{Code: code, Message: message, Err: err}
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}
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// CodeOf returns the Code embedded in err. nil returns CodeInternal;
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// non-AppError errors also default to CodeInternal.
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func CodeOf(err error) Code {
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if err == nil {
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return CodeInternal
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}
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var ae *AppError
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if errors.As(err, &ae) {
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return ae.Code
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}
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return CodeInternal
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}
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