| package swarm |
| |
| import ( |
| "fmt" |
| |
| "golang.org/x/net/context" |
| |
| "github.com/docker/docker/api/client" |
| "github.com/docker/docker/cli" |
| "github.com/docker/engine-api/types/swarm" |
| "github.com/spf13/cobra" |
| "github.com/spf13/pflag" |
| ) |
| |
| func newUpdateCommand(dockerCli *client.DockerCli) *cobra.Command { |
| opts := swarmOptions{} |
| |
| cmd := &cobra.Command{ |
| Use: "update [OPTIONS]", |
| Short: "Update the swarm", |
| Args: cli.NoArgs, |
| RunE: func(cmd *cobra.Command, args []string) error { |
| return runUpdate(dockerCli, cmd.Flags(), opts) |
| }, |
| } |
| |
| addSwarmFlags(cmd.Flags(), &opts) |
| return cmd |
| } |
| |
| func runUpdate(dockerCli *client.DockerCli, flags *pflag.FlagSet, opts swarmOptions) error { |
| client := dockerCli.Client() |
| ctx := context.Background() |
| |
| var updateFlags swarm.UpdateFlags |
| |
| swarm, err := client.SwarmInspect(ctx) |
| if err != nil { |
| return err |
| } |
| |
| err = mergeSwarm(&swarm, flags) |
| if err != nil { |
| return err |
| } |
| |
| err = client.SwarmUpdate(ctx, swarm.Version, swarm.Spec, updateFlags) |
| if err != nil { |
| return err |
| } |
| |
| fmt.Fprintln(dockerCli.Out(), "Swarm updated.") |
| |
| return nil |
| } |
| |
| func mergeSwarm(swarm *swarm.Swarm, flags *pflag.FlagSet) error { |
| spec := &swarm.Spec |
| |
| if flags.Changed(flagTaskHistoryLimit) { |
| spec.Orchestration.TaskHistoryRetentionLimit, _ = flags.GetInt64(flagTaskHistoryLimit) |
| } |
| |
| if flags.Changed(flagDispatcherHeartbeat) { |
| if v, err := flags.GetDuration(flagDispatcherHeartbeat); err == nil { |
| spec.Dispatcher.HeartbeatPeriod = uint64(v.Nanoseconds()) |
| } |
| } |
| |
| if flags.Changed(flagCertExpiry) { |
| if v, err := flags.GetDuration(flagCertExpiry); err == nil { |
| spec.CAConfig.NodeCertExpiry = v |
| } |
| } |
| |
| if flags.Changed(flagExternalCA) { |
| value := flags.Lookup(flagExternalCA).Value.(*ExternalCAOption) |
| spec.CAConfig.ExternalCAs = value.Value() |
| } |
| |
| return nil |
| } |