131 lines
3.1 KiB
Go
131 lines
3.1 KiB
Go
package swarm
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import (
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"context"
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"errors"
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"fmt"
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"github.com/docker/cli/cli"
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"github.com/docker/cli/cli/command"
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"github.com/moby/moby/client"
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"github.com/spf13/cobra"
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)
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type joinTokenOptions struct {
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role string
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rotate bool
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quiet bool
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}
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func newJoinTokenCommand(dockerCLI command.Cli) *cobra.Command {
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opts := joinTokenOptions{}
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cmd := &cobra.Command{
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Use: "join-token [OPTIONS] (worker|manager)",
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Short: "Manage join tokens",
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Args: cli.ExactArgs(1),
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RunE: func(cmd *cobra.Command, args []string) error {
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opts.role = args[0]
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return runJoinToken(cmd.Context(), dockerCLI, opts)
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},
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Annotations: map[string]string{
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"version": "1.24",
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"swarm": "manager",
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},
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DisableFlagsInUseLine: true,
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}
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flags := cmd.Flags()
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flags.BoolVar(&opts.rotate, flagRotate, false, "Rotate join token")
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flags.BoolVarP(&opts.quiet, flagQuiet, "q", false, "Only display token")
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return cmd
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}
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func runJoinToken(ctx context.Context, dockerCLI command.Cli, opts joinTokenOptions) error {
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worker := opts.role == "worker"
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manager := opts.role == "manager"
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if !worker && !manager {
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return errors.New("unknown role " + opts.role)
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}
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apiClient := dockerCLI.Client()
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if opts.rotate {
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res, err := apiClient.SwarmInspect(ctx, client.SwarmInspectOptions{})
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if err != nil {
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return err
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}
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_, err = apiClient.SwarmUpdate(ctx, client.SwarmUpdateOptions{
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Version: res.Swarm.Version,
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Spec: res.Swarm.Spec,
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RotateWorkerToken: worker,
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RotateManagerToken: manager,
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})
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if err != nil {
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return err
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}
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if !opts.quiet {
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_, _ = fmt.Fprintf(dockerCLI.Out(), "Successfully rotated %s join token.\n\n", opts.role)
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}
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}
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// second SwarmInspect in this function,
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// this is necessary since SwarmUpdate after first changes the join tokens
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res, err := apiClient.SwarmInspect(ctx, client.SwarmInspectOptions{})
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if err != nil {
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return err
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}
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if opts.quiet && worker {
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_, _ = fmt.Fprintln(dockerCLI.Out(), res.Swarm.JoinTokens.Worker)
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return nil
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}
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if opts.quiet && manager {
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_, _ = fmt.Fprintln(dockerCLI.Out(), res.Swarm.JoinTokens.Manager)
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return nil
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}
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infoResp, err := apiClient.Info(ctx, client.InfoOptions{})
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if err != nil {
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return err
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}
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return printJoinCommand(ctx, dockerCLI, infoResp.Info.Swarm.NodeID, worker, manager)
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}
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func printJoinCommand(ctx context.Context, dockerCLI command.Cli, nodeID string, worker bool, manager bool) error {
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apiClient := dockerCLI.Client()
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res, err := apiClient.NodeInspect(ctx, nodeID, client.NodeInspectOptions{})
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if err != nil {
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return err
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}
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sw, err := apiClient.SwarmInspect(ctx, client.SwarmInspectOptions{})
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if err != nil {
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return err
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}
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if res.Node.ManagerStatus != nil {
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if worker {
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_, _ = fmt.Fprintf(dockerCLI.Out(),
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"To add a worker to this swarm, run the following command:\n\n docker swarm join --token %s %s\n\n",
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sw.Swarm.JoinTokens.Worker, res.Node.ManagerStatus.Addr,
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)
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}
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if manager {
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_, _ = fmt.Fprintf(dockerCLI.Out(),
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"To add a manager to this swarm, run the following command:\n\n docker swarm join --token %s %s\n\n",
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sw.Swarm.JoinTokens.Manager, res.Node.ManagerStatus.Addr,
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)
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}
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}
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return nil
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}
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