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78 lines
2.4 KiB
Go
78 lines
2.4 KiB
Go
/*
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Copyright 2018 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package podresources
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import (
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"context"
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"k8s.io/api/core/v1"
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"k8s.io/kubelet/pkg/apis/podresources/v1alpha1"
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)
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// DevicesProvider knows how to provide the devices used by the given container
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type DevicesProvider interface {
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GetDevices(podUID, containerName string) []*v1alpha1.ContainerDevices
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UpdateAllocatedDevices()
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}
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// PodsProvider knows how to provide the pods admitted by the node
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type PodsProvider interface {
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GetPods() []*v1.Pod
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}
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// podResourcesServer implements PodResourcesListerServer
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type podResourcesServer struct {
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podsProvider PodsProvider
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devicesProvider DevicesProvider
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}
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// NewPodResourcesServer returns a PodResourcesListerServer which lists pods provided by the PodsProvider
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// with device information provided by the DevicesProvider
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func NewPodResourcesServer(podsProvider PodsProvider, devicesProvider DevicesProvider) v1alpha1.PodResourcesListerServer {
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return &podResourcesServer{
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podsProvider: podsProvider,
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devicesProvider: devicesProvider,
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}
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}
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// List returns information about the resources assigned to pods on the node
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func (p *podResourcesServer) List(ctx context.Context, req *v1alpha1.ListPodResourcesRequest) (*v1alpha1.ListPodResourcesResponse, error) {
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pods := p.podsProvider.GetPods()
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podResources := make([]*v1alpha1.PodResources, len(pods))
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p.devicesProvider.UpdateAllocatedDevices()
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for i, pod := range pods {
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pRes := v1alpha1.PodResources{
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Name: pod.Name,
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Namespace: pod.Namespace,
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Containers: make([]*v1alpha1.ContainerResources, len(pod.Spec.Containers)),
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}
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for j, container := range pod.Spec.Containers {
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pRes.Containers[j] = &v1alpha1.ContainerResources{
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Name: container.Name,
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Devices: p.devicesProvider.GetDevices(string(pod.UID), container.Name),
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}
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}
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podResources[i] = &pRes
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}
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return &v1alpha1.ListPodResourcesResponse{
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PodResources: podResources,
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}, nil
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}
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