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moby--moby/api/client/swarm/join.go

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package swarm
import (
"fmt"
"github.com/docker/docker/api/client"
"github.com/docker/docker/cli"
"github.com/docker/engine-api/types/swarm"
"github.com/spf13/cobra"
"golang.org/x/net/context"
)
type joinOptions struct {
remote string
listenAddr NodeAddrOption
manager bool
secret string
CACertHash string
}
func newJoinCommand(dockerCli *client.DockerCli) *cobra.Command {
opts := joinOptions{
listenAddr: NodeAddrOption{addr: defaultListenAddr},
}
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, "listen-addr", "Listen address")
flags.BoolVar(&opts.manager, "manager", false, "Try joining as a manager.")
flags.StringVar(&opts.secret, "secret", "", "Secret for node acceptance")
flags.StringVar(&opts.CACertHash, "ca-hash", "", "Hash of the Root Certificate Authority certificate used for trusted join")
return cmd
}
func runJoin(dockerCli *client.DockerCli, opts joinOptions) error {
client := dockerCli.Client()
ctx := context.Background()
req := swarm.JoinRequest{
Manager: opts.manager,
Secret: opts.secret,
ListenAddr: opts.listenAddr.String(),
RemoteAddrs: []string{opts.remote},
CACertHash: opts.CACertHash,
}
err := client.SwarmJoin(ctx, req)
if err != nil {
return err
}
if opts.manager {
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
}