github.com/noxiouz/docker@v0.7.3-0.20160629055221-3d231c78e8c5/api/client/swarm/update.go (about)

     1  package swarm
     2  
     3  import (
     4  	"fmt"
     5  
     6  	"golang.org/x/net/context"
     7  
     8  	"github.com/docker/docker/api/client"
     9  	"github.com/docker/docker/cli"
    10  	"github.com/docker/engine-api/types/swarm"
    11  	"github.com/spf13/cobra"
    12  	"github.com/spf13/pflag"
    13  )
    14  
    15  func newUpdateCommand(dockerCli *client.DockerCli) *cobra.Command {
    16  	opts := swarmOptions{autoAccept: NewAutoAcceptOption()}
    17  
    18  	cmd := &cobra.Command{
    19  		Use:   "update",
    20  		Short: "Update the Swarm",
    21  		Args:  cli.NoArgs,
    22  		RunE: func(cmd *cobra.Command, args []string) error {
    23  			return runUpdate(dockerCli, cmd.Flags(), opts)
    24  		},
    25  	}
    26  
    27  	addSwarmFlags(cmd.Flags(), &opts)
    28  	return cmd
    29  }
    30  
    31  func runUpdate(dockerCli *client.DockerCli, flags *pflag.FlagSet, opts swarmOptions) error {
    32  	client := dockerCli.Client()
    33  	ctx := context.Background()
    34  
    35  	swarm, err := client.SwarmInspect(ctx)
    36  	if err != nil {
    37  		return err
    38  	}
    39  
    40  	err = mergeSwarm(&swarm, flags)
    41  	if err != nil {
    42  		return err
    43  	}
    44  
    45  	err = client.SwarmUpdate(ctx, swarm.Version, swarm.Spec)
    46  	if err != nil {
    47  		return err
    48  	}
    49  
    50  	fmt.Println("Swarm updated.")
    51  	return nil
    52  }
    53  
    54  func mergeSwarm(swarm *swarm.Swarm, flags *pflag.FlagSet) error {
    55  	spec := &swarm.Spec
    56  
    57  	if flags.Changed(flagAutoAccept) {
    58  		value := flags.Lookup(flagAutoAccept).Value.(*AutoAcceptOption)
    59  		spec.AcceptancePolicy.Policies = value.Policies(nil)
    60  	}
    61  
    62  	var psecret *string
    63  	if flags.Changed(flagSecret) {
    64  		secret, _ := flags.GetString(flagSecret)
    65  		psecret = &secret
    66  	}
    67  
    68  	for i := range spec.AcceptancePolicy.Policies {
    69  		spec.AcceptancePolicy.Policies[i].Secret = psecret
    70  	}
    71  
    72  	if flags.Changed(flagTaskHistoryLimit) {
    73  		spec.Orchestration.TaskHistoryRetentionLimit, _ = flags.GetInt64(flagTaskHistoryLimit)
    74  	}
    75  
    76  	if flags.Changed(flagDispatcherHeartbeat) {
    77  		if v, err := flags.GetDuration(flagDispatcherHeartbeat); err == nil {
    78  			spec.Dispatcher.HeartbeatPeriod = uint64(v.Nanoseconds())
    79  		}
    80  	}
    81  
    82  	if flags.Changed(flagCertExpiry) {
    83  		if v, err := flags.GetDuration(flagCertExpiry); err == nil {
    84  			spec.CAConfig.NodeCertExpiry = v
    85  		}
    86  	}
    87  
    88  	return nil
    89  }