DockerCLI/command/swarm/join.go

76 lines
1.9 KiB
Go

package swarm
import (
"fmt"
"strings"
"github.com/docker/docker/api/types/swarm"
"github.com/docker/docker/cli"
"github.com/docker/docker/cli/command"
"github.com/spf13/cobra"
"golang.org/x/net/context"
)
type joinOptions struct {
remote string
listenAddr NodeAddrOption
// Not a NodeAddrOption because it has no default port.
advertiseAddr string
token string
}
func newJoinCommand(dockerCli *command.DockerCli) *cobra.Command {
opts := joinOptions{
listenAddr: NewListenAddrOption(),
}
cmd := &cobra.Command{
Use: "join [OPTIONS] HOST:PORT",
Short: "Join a swarm as a node and/or manager",
Args: cli.ExactArgs(1),
RunE: func(cmd *cobra.Command, args []string) error {
opts.remote = args[0]
return runJoin(dockerCli, opts)
},
}
flags := cmd.Flags()
flags.Var(&opts.listenAddr, flagListenAddr, "Listen address (format: <ip|interface>[:port])")
flags.StringVar(&opts.advertiseAddr, flagAdvertiseAddr, "", "Advertised address (format: <ip|interface>[:port])")
flags.StringVar(&opts.token, flagToken, "", "Token for entry into the swarm")
return cmd
}
func runJoin(dockerCli *command.DockerCli, 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},
}
err := client.SwarmJoin(ctx, req)
if err != nil {
return err
}
info, err := client.Info(ctx)
if err != nil {
return err
}
_, _, err = client.NodeInspectWithRaw(ctx, info.Swarm.NodeID)
if err != nil {
// TODO(aaronl): is there a better way to do this?
if strings.Contains(err.Error(), "This node is not a swarm manager.") {
fmt.Fprintln(dockerCli.Out(), "This node joined a swarm as a worker.")
}
} else {
fmt.Fprintln(dockerCli.Out(), "This node joined a swarm as a manager.")
}
return nil
}