// setCommandFunc executes the "set" command. func setCommandFunc(c *cli.Context, client *etcd.Client) (*etcd.Response, error) { if len(c.Args()) == 0 { return nil, errors.New("Key required") } key := c.Args()[0] value, err := argOrStdin(c.Args(), os.Stdin, 1) if err != nil { return nil, errors.New("Value required") } ttl := c.Int("ttl") prevValue := c.String("swap-with-value") prevIndex := c.Int("swap-with-index") if prevValue == "" && prevIndex == 0 { return client.Set(key, value, uint64(ttl)) } else { return client.CompareAndSwap(key, value, uint64(ttl), prevValue, uint64(prevIndex)) } }