Golang CloudServersProvider.ServerById方法代碼示例

func withServer(api gophercloud.CloudServersProvider, f func(string)) {
	id, err := createServer(api, "", "", "", "")
	if err != nil {
		panic(err)
	}

	for {
		s, err := api.ServerById(id)
		if err != nil {
			panic(err)
		}
		if s.Status == "ACTIVE" {
			break
		}
		time.Sleep(10 * time.Second)
	}

	f(id)

	// I've learned that resizing an instance can fail if a delete request
	// comes in prior to its completion.  This ends up leaving the server
	// in an error state, and neither the resize NOR the delete complete.
	// This is a bug in OpenStack, as far as I'm concerned, but thankfully,
	// there's an easy work-around -- just wait for your server to return to
	// active state first!
	waitForServerState(api, id, "ACTIVE")
	err = api.DeleteServerById(id)
	if err != nil {
		panic(err)
	}
}

// waitForServerState polls, every 10 seconds, for a given server to appear in the indicated state.
// This call will block forever if it never appears in the desired state, so if a timeout is required,
// make sure to call this function in a goroutine.
func waitForServerState(api gophercloud.CloudServersProvider, id, state string) error {
	for {
		s, err := api.ServerById(id)
		if err != nil {
			return err
		}
		if s.Status == state {
			return nil
		}
		time.Sleep(10 * time.Second)
	}
	panic("Impossible")
}

func tryAllAddresses(id string, api gophercloud.CloudServersProvider) {
	log("Getting the server instance")
	s, err := api.ServerById(id)
	if err != nil {
		panic(err)
	}

	log("Getting the complete set of pools")
	ps, err := s.AllAddressPools()
	if err != nil {
		panic(err)
	}

	log("Listing IPs for each pool")
	for k, v := range ps {
		log(fmt.Sprintf("  Pool %s", k))
		for _, a := range v {
			log(fmt.Sprintf("    IP: %s, Version: %d", a.Addr, a.Version))
		}
	}
}