90 lines
2.0 KiB
Go
90 lines
2.0 KiB
Go
package swarm
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import (
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"fmt"
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"golang.org/x/net/context"
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"github.com/docker/docker/api/client"
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"github.com/docker/docker/cli"
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"github.com/docker/engine-api/types/swarm"
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"github.com/spf13/cobra"
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"github.com/spf13/pflag"
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)
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func newUpdateCommand(dockerCli *client.DockerCli) *cobra.Command {
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opts := swarmOptions{autoAccept: NewAutoAcceptOption()}
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cmd := &cobra.Command{
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Use: "update",
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Short: "Update the Swarm",
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Args: cli.NoArgs,
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RunE: func(cmd *cobra.Command, args []string) error {
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return runUpdate(dockerCli, cmd.Flags(), opts)
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},
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}
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addSwarmFlags(cmd.Flags(), &opts)
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return cmd
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}
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func runUpdate(dockerCli *client.DockerCli, flags *pflag.FlagSet, opts swarmOptions) error {
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client := dockerCli.Client()
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ctx := context.Background()
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swarm, err := client.SwarmInspect(ctx)
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if err != nil {
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return err
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}
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err = mergeSwarm(&swarm, flags)
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if err != nil {
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return err
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}
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err = client.SwarmUpdate(ctx, swarm.Version, swarm.Spec)
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if err != nil {
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return err
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}
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fmt.Println("Swarm updated.")
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return nil
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}
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func mergeSwarm(swarm *swarm.Swarm, flags *pflag.FlagSet) error {
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spec := &swarm.Spec
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if flags.Changed(flagAutoAccept) {
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value := flags.Lookup(flagAutoAccept).Value.(*AutoAcceptOption)
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spec.AcceptancePolicy.Policies = value.Policies(nil)
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}
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var psecret *string
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if flags.Changed(flagSecret) {
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secret, _ := flags.GetString(flagSecret)
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psecret = &secret
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}
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for i := range spec.AcceptancePolicy.Policies {
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spec.AcceptancePolicy.Policies[i].Secret = psecret
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}
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if flags.Changed(flagTaskHistoryLimit) {
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spec.Orchestration.TaskHistoryRetentionLimit, _ = flags.GetInt64(flagTaskHistoryLimit)
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}
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if flags.Changed(flagDispatcherHeartbeat) {
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if v, err := flags.GetDuration(flagDispatcherHeartbeat); err == nil {
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spec.Dispatcher.HeartbeatPeriod = uint64(v.Nanoseconds())
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}
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}
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if flags.Changed(flagCertExpiry) {
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if v, err := flags.GetDuration(flagCertExpiry); err == nil {
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spec.CAConfig.NodeCertExpiry = v
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}
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}
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return nil
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}
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