93 lines
2.8 KiB
Go
93 lines
2.8 KiB
Go
package swarm
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import (
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"context"
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"fmt"
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"strings"
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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/api/types/swarm"
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"github.com/moby/moby/client"
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"github.com/spf13/cobra"
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"github.com/spf13/pflag"
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)
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type joinOptions struct {
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remote string
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listenAddr NodeAddrOption
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// Not a NodeAddrOption because it has no default port.
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advertiseAddr string
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dataPathAddr string
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token string
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availability string
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}
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func newJoinCommand(dockerCLI command.Cli) *cobra.Command {
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opts := joinOptions{
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listenAddr: NewListenAddrOption(),
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}
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cmd := &cobra.Command{
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Use: "join [OPTIONS] HOST:PORT",
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Short: "Join a swarm as a node and/or manager",
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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.remote = args[0]
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return runJoin(cmd.Context(), dockerCLI, cmd.Flags(), 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": "", // swarm join does not require swarm to be active, and is always available on API 1.24 and up
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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.Var(&opts.listenAddr, flagListenAddr, `Listen address (format: "<ip|interface>[:port]")`)
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flags.StringVar(&opts.advertiseAddr, flagAdvertiseAddr, "", `Advertised address (format: "<ip|interface>[:port]")`)
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flags.StringVar(&opts.dataPathAddr, flagDataPathAddr, "", `Address or interface to use for data path traffic (format: "<ip|interface>")`)
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flags.SetAnnotation(flagDataPathAddr, "version", []string{"1.31"})
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flags.StringVar(&opts.token, flagToken, "", "Token for entry into the swarm")
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flags.StringVar(&opts.availability, flagAvailability, "active", `Availability of the node ("active", "pause", "drain")`)
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return cmd
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}
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func runJoin(ctx context.Context, dockerCLI command.Cli, flags *pflag.FlagSet, opts joinOptions) error {
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apiClient := dockerCLI.Client()
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var availability swarm.NodeAvailability
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if flags.Changed(flagAvailability) {
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switch a := swarm.NodeAvailability(strings.ToLower(opts.availability)); a {
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case swarm.NodeAvailabilityActive, swarm.NodeAvailabilityPause, swarm.NodeAvailabilityDrain:
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availability = a
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default:
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return fmt.Errorf("invalid availability %q, only active, pause and drain are supported", opts.availability)
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}
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}
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_, err := apiClient.SwarmJoin(ctx, client.SwarmJoinOptions{
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JoinToken: opts.token,
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ListenAddr: opts.listenAddr.String(),
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AdvertiseAddr: opts.advertiseAddr,
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DataPathAddr: opts.dataPathAddr,
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RemoteAddrs: []string{opts.remote},
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Availability: availability,
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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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res, 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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if res.Info.Swarm.ControlAvailable {
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_, _ = fmt.Fprintln(dockerCLI.Out(), "This node joined a swarm as a manager.")
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} else {
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_, _ = fmt.Fprintln(dockerCLI.Out(), "This node joined a swarm as a worker.")
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}
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return nil
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}
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