// ScaleSimple does a simple one-shot attempt at scaling - not useful on it's own, but
// a necessary building block for Scale
func (scaler *DeploymentConfigScaler) ScaleSimple(namespace, name string, preconditions *kubectl.ScalePrecondition, newSize uint) (string, error) {
const scaled = "scaled"
controller, err := scaler.c.GetReplicationController(namespace, name)
if err != nil {
return "", kubectl.ControllerScaleError{FailureType: kubectl.ControllerScaleGetFailure, ResourceVersion: "Unknown", ActualError: err}
}
if preconditions != nil {
if err := preconditions.Validate(controller); err != nil {
return "", err
}
}
controller.Spec.Replicas = int(newSize)
// TODO: do retry on 409 errors here?
if _, err := scaler.c.UpdateReplicationController(namespace, controller); err != nil {
return "", kubectl.ControllerScaleError{FailureType: kubectl.ControllerScaleUpdateFailure, ResourceVersion: controller.ResourceVersion, ActualError: err}
}
// TODO: do a better job of printing objects here.
return scaled, nil
}
// ScaleSimple does a simple one-shot attempt at scaling - not useful on it's own, but
// a necessary building block for Scale
func (scaler *DeploymentConfigScaler) ScaleSimple(namespace, name string, preconditions *kubectl.ScalePrecondition, newSize uint) error {
dc, err := scaler.dcClient.DeploymentConfigs(namespace).Get(name)
if err != nil {
return err
}
controller, err := scaler.rcClient.ReplicationControllers(namespace).Get(util.LatestDeploymentNameForConfig(dc))
if err != nil {
return kubectl.ControllerScaleError{FailureType: kubectl.ControllerScaleGetFailure, ResourceVersion: "Unknown", ActualError: err}
}
if preconditions != nil {
if err := preconditions.ValidateReplicationController(controller); err != nil {
return err
}
}
controller.Spec.Replicas = int(newSize)
// TODO: do retry on 409 errors here?
if _, err := scaler.rcClient.ReplicationControllers(namespace).Update(controller); err != nil {
return kubectl.ControllerScaleError{FailureType: kubectl.ControllerScaleUpdateFailure, ResourceVersion: controller.ResourceVersion, ActualError: err}
}
// TODO: do a better job of printing objects here.
return nil
}