| package node |
| |
| import ( |
| "fmt" |
| |
| "github.com/docker/docker/api/types/swarm" |
| "github.com/docker/docker/cli" |
| "github.com/docker/docker/cli/command" |
| "github.com/spf13/cobra" |
| ) |
| |
| func newDemoteCommand(dockerCli *command.DockerCli) *cobra.Command { |
| return &cobra.Command{ |
| Use: "demote NODE [NODE...]", |
| Short: "Demote one or more nodes from manager in the swarm", |
| Args: cli.RequiresMinArgs(1), |
| RunE: func(cmd *cobra.Command, args []string) error { |
| return runDemote(dockerCli, args) |
| }, |
| } |
| } |
| |
| func runDemote(dockerCli *command.DockerCli, nodes []string) error { |
| demote := func(node *swarm.Node) error { |
| if node.Spec.Role == swarm.NodeRoleWorker { |
| fmt.Fprintf(dockerCli.Out(), "Node %s is already a worker.\n", node.ID) |
| return errNoRoleChange |
| } |
| node.Spec.Role = swarm.NodeRoleWorker |
| return nil |
| } |
| success := func(nodeID string) { |
| fmt.Fprintf(dockerCli.Out(), "Manager %s demoted in the swarm.\n", nodeID) |
| } |
| return updateNodes(dockerCli, nodes, demote, success) |
| } |
