package client
 
 import (
 	"fmt"
 	"net/url"
 	"strconv"
 
 	"github.com/docker/docker/api/types/swarm"
 	"golang.org/x/net/context"
 )
 
 // SwarmUpdate updates the Swarm.
 func (cli *Client) SwarmUpdate(ctx context.Context, version swarm.Version, swarm swarm.Spec, flags swarm.UpdateFlags) error {
 	query := url.Values{}
 	query.Set("version", strconv.FormatUint(version.Index, 10))
 	query.Set("rotateWorkerToken", fmt.Sprintf("%v", flags.RotateWorkerToken))
 	query.Set("rotateManagerToken", fmt.Sprintf("%v", flags.RotateManagerToken))

 	query.Set("rotateManagerUnlockKey", fmt.Sprintf("%v", flags.RotateManagerUnlockKey))

 	resp, err := cli.post(ctx, "/swarm/update", query, swarm, nil)
 	ensureReaderClosed(resp)
 	return err
 }