server_v1alpha1.go

Documentation: k8s.io/kubernetes/pkg/kubelet/apis/podresources

     1  /*
     2  Copyright 2018 The Kubernetes Authors.
     3  
     4  Licensed under the Apache License, Version 2.0 (the "License");
     5  you may not use this file except in compliance with the License.
     6  You may obtain a copy of the License at
     7  
     8      http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  Unless required by applicable law or agreed to in writing, software
    11  distributed under the License is distributed on an "AS IS" BASIS,
    12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  See the License for the specific language governing permissions and
    14  limitations under the License.
    15  */
    16  
    17  package podresources
    18  
    19  import (
    20  	"context"
    21  
    22  	"k8s.io/kubernetes/pkg/kubelet/metrics"
    23  
    24  	"k8s.io/kubelet/pkg/apis/podresources/v1"
    25  	"k8s.io/kubelet/pkg/apis/podresources/v1alpha1"
    26  )
    27  
    28  // v1alpha1PodResourcesServer implements PodResourcesListerServer
    29  type v1alpha1PodResourcesServer struct {
    30  	podsProvider    PodsProvider
    31  	devicesProvider DevicesProvider
    32  }
    33  
    34  // NewV1alpha1PodResourcesServer returns a PodResourcesListerServer which lists pods provided by the PodsProvider
    35  // with device information provided by the DevicesProvider
    36  func NewV1alpha1PodResourcesServer(providers PodResourcesProviders) v1alpha1.PodResourcesListerServer {
    37  	return &v1alpha1PodResourcesServer{
    38  		podsProvider:    providers.Pods,
    39  		devicesProvider: providers.Devices,
    40  	}
    41  }
    42  
    43  func v1DevicesToAlphaV1(alphaDevs []*v1.ContainerDevices) []*v1alpha1.ContainerDevices {
    44  	var devs []*v1alpha1.ContainerDevices
    45  	for _, alphaDev := range alphaDevs {
    46  		dev := v1alpha1.ContainerDevices{
    47  			ResourceName: alphaDev.ResourceName,
    48  			DeviceIds:    alphaDev.DeviceIds,
    49  		}
    50  		devs = append(devs, &dev)
    51  	}
    52  
    53  	return devs
    54  }
    55  
    56  // List returns information about the resources assigned to pods on the node
    57  func (p *v1alpha1PodResourcesServer) List(ctx context.Context, req *v1alpha1.ListPodResourcesRequest) (*v1alpha1.ListPodResourcesResponse, error) {
    58  	metrics.PodResourcesEndpointRequestsTotalCount.WithLabelValues("v1alpha1").Inc()
    59  	pods := p.podsProvider.GetPods()
    60  	podResources := make([]*v1alpha1.PodResources, len(pods))
    61  	p.devicesProvider.UpdateAllocatedDevices()
    62  
    63  	for i, pod := range pods {
    64  		pRes := v1alpha1.PodResources{
    65  			Name:       pod.Name,
    66  			Namespace:  pod.Namespace,
    67  			Containers: make([]*v1alpha1.ContainerResources, len(pod.Spec.Containers)),
    68  		}
    69  
    70  		for j, container := range pod.Spec.Containers {
    71  			pRes.Containers[j] = &v1alpha1.ContainerResources{
    72  				Name:    container.Name,
    73  				Devices: v1DevicesToAlphaV1(p.devicesProvider.GetDevices(string(pod.UID), container.Name)),
    74  			}
    75  		}
    76  		podResources[i] = &pRes
    77  	}
    78  
    79  	return &v1alpha1.ListPodResourcesResponse{
    80  		PodResources: podResources,
    81  	}, nil
    82  }
    83
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