Method Exec

cli/chain.go:110–146

Exec executes the command chain. The first errored function terminates the chain and the error is returned. Otherwise, returns nil.

()

// The first errored function terminates the chain and the
// error is returned. Otherwise, returns nil.
func (a *ActiveCommandChain) Exec() error {
	a.executing = true
	defer func() { a.executing = false }()

	for _, f := range a.funcs {
		if f.f == nil {
			if f.s != "" {
				a.log.Println(f.s, "...")
				a.lastStage = f.s
			}
			continue
		}

		// success
		err := f.f()
		if err == nil {
			continue
		}

		// warning
		if _, ok := err.(errNonFatal); ok {
			if a.lastStage == "" {
				a.log.Warnln(err)
			} else {
				a.log.Warnln(fmt.Errorf("error at '%s': %w", a.lastStage, err))
			}
			continue
		}

		// error
		if a.lastStage == "" {
			return err
		}
		return fmt.Errorf("error at '%s': %w", a.lastStage, err)
	}
	return nil
}

// 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.