func runServiceScale(dockerCli *client.DockerCli, serviceID string, scale string) error {
client := dockerCli.Client()
ctx := context.Background()
service, err := client.ServiceInspect(ctx, serviceID)
if err != nil {
return err
}
serviceMode := &service.Spec.Mode
if serviceMode.Replicated == nil {
return fmt.Errorf("scale can only be used with replicated mode")
}
uintScale, err := strconv.ParseUint(scale, 10, 64)
if err != nil {
return fmt.Errorf("invalid replicas value %s: %s", scale, err.Error())
}
serviceMode.Replicated.Replicas = &uintScale
err = client.ServiceUpdate(ctx, service.ID, service.Version, service.Spec)
if err != nil {
return err
}
fmt.Fprintf(dockerCli.Out(), "%s scaled to %s\n", serviceID, scale)
return nil
}
func runUpdate(dockerCli *client.DockerCli, flags *pflag.FlagSet, serviceID string) error {
client := dockerCli.Client()
ctx := context.Background()
service, err := client.ServiceInspect(ctx, serviceID)
if err != nil {
return err
}
err = mergeService(&service.Spec, flags)
if err != nil {
return err
}
err = client.ServiceUpdate(ctx, service.ID, service.Version, service.Spec)
if err != nil {
return err
}
fmt.Fprintf(dockerCli.Out(), "%s\n", serviceID)
return nil
}