1/* 2Copyright 2017 The Kubernetes Authors. 3 4Licensed under the Apache License, Version 2.0 (the "License"); 5you may not use this file except in compliance with the License. 6You may obtain a copy of the License at 7 8 http://www.apache.org/licenses/LICENSE-2.0 9 10Unless required by applicable law or agreed to in writing, software 11distributed under the License is distributed on an "AS IS" BASIS, 12WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13See the License for the specific language governing permissions and 14limitations under the License. 15*/ 16 17package devicemanager 18 19import ( 20 v1 "k8s.io/api/core/v1" 21 "k8s.io/kubernetes/pkg/kubelet/cm/topologymanager" 22 "k8s.io/kubernetes/pkg/kubelet/config" 23 "k8s.io/kubernetes/pkg/kubelet/lifecycle" 24 "k8s.io/kubernetes/pkg/kubelet/pluginmanager/cache" 25 schedulerframework "k8s.io/kubernetes/pkg/scheduler/framework" 26) 27 28// ManagerStub provides a simple stub implementation for the Device Manager. 29type ManagerStub struct{} 30 31// NewManagerStub creates a ManagerStub. 32func NewManagerStub() (*ManagerStub, error) { 33 return &ManagerStub{}, nil 34} 35 36// Start simply returns nil. 37func (h *ManagerStub) Start(activePods ActivePodsFunc, sourcesReady config.SourcesReady) error { 38 return nil 39} 40 41// Stop simply returns nil. 42func (h *ManagerStub) Stop() error { 43 return nil 44} 45 46// Allocate simply returns nil. 47func (h *ManagerStub) Allocate(pod *v1.Pod, container *v1.Container) error { 48 return nil 49} 50 51// UpdatePluginResources simply returns nil. 52func (h *ManagerStub) UpdatePluginResources(node *schedulerframework.NodeInfo, attrs *lifecycle.PodAdmitAttributes) error { 53 return nil 54} 55 56// GetDeviceRunContainerOptions simply returns nil. 57func (h *ManagerStub) GetDeviceRunContainerOptions(pod *v1.Pod, container *v1.Container) (*DeviceRunContainerOptions, error) { 58 return nil, nil 59} 60 61// GetCapacity simply returns nil capacity and empty removed resource list. 62func (h *ManagerStub) GetCapacity() (v1.ResourceList, v1.ResourceList, []string) { 63 return nil, nil, []string{} 64} 65 66// GetWatcherHandler returns plugin watcher interface 67func (h *ManagerStub) GetWatcherHandler() cache.PluginHandler { 68 return nil 69} 70 71// GetTopologyHints returns an empty TopologyHint map 72func (h *ManagerStub) GetTopologyHints(pod *v1.Pod, container *v1.Container) map[string][]topologymanager.TopologyHint { 73 return map[string][]topologymanager.TopologyHint{} 74} 75 76// GetPodTopologyHints returns an empty TopologyHint map 77func (h *ManagerStub) GetPodTopologyHints(pod *v1.Pod) map[string][]topologymanager.TopologyHint { 78 return map[string][]topologymanager.TopologyHint{} 79} 80 81// GetDevices returns nil 82func (h *ManagerStub) GetDevices(_, _ string) ResourceDeviceInstances { 83 return nil 84} 85 86// GetAllocatableDevices returns nothing 87func (h *ManagerStub) GetAllocatableDevices() ResourceDeviceInstances { 88 return nil 89} 90 91// ShouldResetExtendedResourceCapacity returns false 92func (h *ManagerStub) ShouldResetExtendedResourceCapacity() bool { 93 return false 94} 95 96// UpdateAllocatedDevices returns nothing 97func (h *ManagerStub) UpdateAllocatedDevices() { 98 return 99} 100