func runJoin(dockerCli command.Cli, flags *pflag.FlagSet, opts joinOptions) error {
client := dockerCli.Client()
ctx := context.Background()
req := swarm.JoinRequest{
JoinToken: opts.token,
ListenAddr: opts.listenAddr.String(),
AdvertiseAddr: opts.advertiseAddr,
RemoteAddrs: []string{opts.remote},
}
if flags.Changed(flagAvailability) {
availability := swarm.NodeAvailability(strings.ToLower(opts.availability))
switch availability {
case swarm.NodeAvailabilityActive, swarm.NodeAvailabilityPause, swarm.NodeAvailabilityDrain:
req.Availability = availability
default:
return fmt.Errorf("invalid availability %q, only active, pause and drain are supported", opts.availability)
}
}
err := client.SwarmJoin(ctx, req)
if err != nil {
return err
}
info, err := client.Info(ctx)
if err != nil {
return err
}
if info.Swarm.ControlAvailable {
fmt.Fprintln(dockerCli.Out(), "This node joined a swarm as a manager.")
} else {
fmt.Fprintln(dockerCli.Out(), "This node joined a swarm as a worker.")
}
return nil
}
