func (c *UnitCommandBase) Init(args []string) error {
if c.NumUnits < 1 {
return errors.New("--num-units must be a positive integer")
}
if c.ToMachineSpec != "" {
if c.NumUnits > 1 {
return errors.New("cannot use --num-units > 1 with --to")
}
if !state.IsMachineOrNewContainer(c.ToMachineSpec) {
return fmt.Errorf("invalid --to parameter %q", c.ToMachineSpec)
}
}
return nil
}
func (c *AddMachineCommand) Init(args []string) error {
if c.Constraints.Container != nil {
return fmt.Errorf("container constraint %q not allowed when adding a machine", *c.Constraints.Container)
}
containerSpec, err := cmd.ZeroOrOneArgs(args)
if err != nil {
return err
}
if containerSpec == "" {
return nil
}
// container arg can either be 'type:machine' or 'type'
if c.ContainerType, err = instance.ParseSupportedContainerType(containerSpec); err != nil {
if !state.IsMachineOrNewContainer(containerSpec) {
return fmt.Errorf("malformed container argument %q", containerSpec)
}
sep := strings.Index(containerSpec, ":")
c.MachineId = containerSpec[sep+1:]
c.ContainerType, err = instance.ParseSupportedContainerType(containerSpec[:sep])
}
return err
}