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Copyright 2017 The Kubernetes Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
See the License for the specific language governing permissions and
limitations under the License.
package devicemanager
import (
v1 ""
podresourcesapi ""
schedulernodeinfo ""
// ManagerStub provides a simple stub implementation for the Device Manager.
type ManagerStub struct{}
// NewManagerStub creates a ManagerStub.
func NewManagerStub() (*ManagerStub, error) {
return &ManagerStub{}, nil
// Start simply returns nil.
func (h *ManagerStub) Start(activePods ActivePodsFunc, sourcesReady config.SourcesReady) error {
return nil
// Stop simply returns nil.
func (h *ManagerStub) Stop() error {
return nil
// Allocate simply returns nil.
func (h *ManagerStub) Allocate(node *schedulernodeinfo.NodeInfo, attrs *lifecycle.PodAdmitAttributes) error {
return nil
// GetDeviceRunContainerOptions simply returns nil.
func (h *ManagerStub) GetDeviceRunContainerOptions(pod *v1.Pod, container *v1.Container) (*DeviceRunContainerOptions, error) {
return nil, nil
// GetCapacity simply returns nil capacity and empty removed resource list.
func (h *ManagerStub) GetCapacity() (v1.ResourceList, v1.ResourceList, []string) {
return nil, nil, []string{}
// GetWatcherHandler returns plugin watcher interface
func (h *ManagerStub) GetWatcherHandler() cache.PluginHandler {
return nil
// GetTopologyHints returns an empty TopologyHint map
func (h *ManagerStub) GetTopologyHints(pod v1.Pod, container v1.Container) map[string][]topologymanager.TopologyHint {
return map[string][]topologymanager.TopologyHint{}
// GetDevices returns nil
func (h *ManagerStub) GetDevices(_, _ string) []*podresourcesapi.ContainerDevices {
return nil
// ShouldResetExtendedResourceCapacity returns false
func (h *ManagerStub) ShouldResetExtendedResourceCapacity() bool {
return false
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