// SetDeploymentAnnotationsTo sets deployment's annotations as given RS's annotations.
// This action should be done if and only if the deployment is rolling back to this rs.
// Note that apply and revision annotations are not changed.
func SetDeploymentAnnotationsTo(deployment *extensions.Deployment, rollbackToRS *extensions.ReplicaSet) {
	deployment.Annotations = getSkippedAnnotations(deployment.Annotations)
	for k, v := range rollbackToRS.Annotations {
		if !skipCopyAnnotation(k) {
			deployment.Annotations[k] = v
		}
	}
}

func (dc *DeploymentController) markDeploymentOverlap(deployment *extensions.Deployment, withDeployment string) (*extensions.Deployment, error) {
	if deployment.Annotations[util.OverlapAnnotation] == withDeployment && deployment.Status.ObservedGeneration >= deployment.Generation {
		return deployment, nil
	}
	if deployment.Annotations == nil {
		deployment.Annotations = make(map[string]string)
	}
	// Update observedGeneration for overlapping deployments so that their deletion won't be blocked.
	deployment.Status.ObservedGeneration = deployment.Generation
	deployment.Annotations[util.OverlapAnnotation] = withDeployment
	return dc.client.Extensions().Deployments(deployment.Namespace).UpdateStatus(deployment)
}

// SetDeploymentRevision updates the revision for a deployment.
func SetDeploymentRevision(deployment *extensions.Deployment, revision string) bool {
	updated := false

	if deployment.Annotations == nil {
		deployment.Annotations = make(map[string]string)
	}
	if deployment.Annotations[RevisionAnnotation] != revision {
		deployment.Annotations[RevisionAnnotation] = revision
		updated = true
	}

	return updated
}