xdefer

xdefer

Package xdefer implements an extremely useful function, Errorf, to annotate all errors returned from a function transparently.

Install

go get oss.terrastruct.com/xdefer

Usage

Your code without xdefer:

func MyFunc() (err error) {
  err := doA()
  if err != nil {
    return fmt.Errorf("failed at MyFunc: %w", err)
  }
  err = doB()
  if err != nil {
    return fmt.Errorf("failed at MyFunc: %w", err)
  }
  ...
}

Your code with xdefer:

func MyFunc() (err error) {
  defer xdefer.Errorf(&err, "failed at MyFunc")

  err := doA()
  if err != nil {
    return err
  }
  err = doB()
  if err != nil {
    return err
  }
}