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120 lines
2.8 KiB
Go
120 lines
2.8 KiB
Go
package swarm
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import (
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"errors"
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"fmt"
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"github.com/spf13/cobra"
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"github.com/docker/docker/api/types/swarm"
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"github.com/docker/docker/cli"
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"github.com/docker/docker/cli/command"
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"golang.org/x/net/context"
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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.DockerCli) *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(dockerCli, opts)
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},
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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(dockerCli *command.DockerCli, 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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client := dockerCli.Client()
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ctx := context.Background()
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if opts.rotate {
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flags := swarm.UpdateFlags{
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RotateWorkerToken: worker,
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RotateManagerToken: manager,
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}
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sw, err := client.SwarmInspect(ctx)
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if err != nil {
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return err
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}
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if err := client.SwarmUpdate(ctx, sw.Version, sw.Spec, flags); 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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sw, err := client.SwarmInspect(ctx)
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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(), sw.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(), sw.JoinTokens.Manager)
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return nil
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}
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info, err := client.Info(ctx)
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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, info.Swarm.NodeID, worker, manager)
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}
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func printJoinCommand(ctx context.Context, dockerCli *command.DockerCli, nodeID string, worker bool, manager bool) error {
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client := dockerCli.Client()
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node, _, err := client.NodeInspectWithRaw(ctx, nodeID)
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if err != nil {
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return err
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}
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sw, err := client.SwarmInspect(ctx)
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if err != nil {
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return err
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}
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if node.ManagerStatus != nil {
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if worker {
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fmt.Fprintf(dockerCli.Out(), "To add a worker to this swarm, run the following command:\n\n docker swarm join \\\n --token %s \\\n %s\n\n", sw.JoinTokens.Worker, node.ManagerStatus.Addr)
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}
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if manager {
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fmt.Fprintf(dockerCli.Out(), "To add a manager to this swarm, run the following command:\n\n docker swarm join \\\n --token %s \\\n %s\n\n", sw.JoinTokens.Manager, node.ManagerStatus.Addr)
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}
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}
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return nil
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}
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