Method Retry

cli/chain.go:151–162

Retry retries `f` up to `count` times at interval. If after `count` attempts there is an error, the command chain is terminated with the final error. retryCount starts from 1.

(stage string, interval time.Duration, count int, f func(retryCount int) error)

// If after `count` attempts there is an error, the command chain is terminated with the final error.
// retryCount starts from 1.
func (a *ActiveCommandChain) Retry(stage string, interval time.Duration, count int, f func(retryCount int) error) {
	a.Add(func() (err error) {
		var i int
		for err = f(i + 1); i < count && err != nil; i, err = i+1, f(i+1) {
			if stage != "" {
				a.log.Println(stage, "...")
			}
			time.Sleep(interval)
		}
		return err
	})
}