1e7bb20c52
Before the addition of GetAllocatableResources, the podresources API had just one endpoint `List()`, thus we could just account for the total of the calls to have a good pulse of the API usage. Now that we extend the API with more endpoints (`GetAlloctableResources`), in order to improve the observability we add per-endpoint counters, in addition to the existing counter of the total API calls. Signed-off-by: Francesco Romani <fromani@redhat.com>
95 lines
3.4 KiB
Go
95 lines
3.4 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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"fmt"
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utilfeature "k8s.io/apiserver/pkg/util/feature"
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kubefeatures "k8s.io/kubernetes/pkg/features"
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"k8s.io/kubernetes/pkg/kubelet/metrics"
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"k8s.io/kubelet/pkg/apis/podresources/v1"
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)
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// podResourcesServerV1alpha1 implements PodResourcesListerServer
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type v1PodResourcesServer struct {
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podsProvider PodsProvider
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devicesProvider DevicesProvider
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cpusProvider CPUsProvider
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}
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// NewV1PodResourcesServer 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 NewV1PodResourcesServer(podsProvider PodsProvider, devicesProvider DevicesProvider, cpusProvider CPUsProvider) v1.PodResourcesListerServer {
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return &v1PodResourcesServer{
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podsProvider: podsProvider,
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devicesProvider: devicesProvider,
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cpusProvider: cpusProvider,
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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 *v1PodResourcesServer) List(ctx context.Context, req *v1.ListPodResourcesRequest) (*v1.ListPodResourcesResponse, error) {
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metrics.PodResourcesEndpointRequestsTotalCount.WithLabelValues("v1").Inc()
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metrics.PodResourcesEndpointRequestsListCount.WithLabelValues("v1").Inc()
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pods := p.podsProvider.GetPods()
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podResources := make([]*v1.PodResources, len(pods))
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p.devicesProvider.UpdateAllocatedDevices()
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for i, pod := range pods {
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pRes := v1.PodResources{
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Name: pod.Name,
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Namespace: pod.Namespace,
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Containers: make([]*v1.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] = &v1.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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CpuIds: p.cpusProvider.GetCPUs(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 &v1.ListPodResourcesResponse{
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PodResources: podResources,
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}, nil
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}
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// GetAllocatableResources returns information about all the resources known by the server - this more like the capacity, not like the current amount of free resources.
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func (p *v1PodResourcesServer) GetAllocatableResources(ctx context.Context, req *v1.AllocatableResourcesRequest) (*v1.AllocatableResourcesResponse, error) {
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metrics.PodResourcesEndpointRequestsTotalCount.WithLabelValues("v1").Inc()
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metrics.PodResourcesEndpointRequestsGetAllocatableCount.WithLabelValues("v1").Inc()
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if !utilfeature.DefaultFeatureGate.Enabled(kubefeatures.KubeletPodResourcesGetAllocatable) {
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metrics.PodResourcesEndpointErrorsGetAllocatableCount.WithLabelValues("v1").Inc()
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return nil, fmt.Errorf("Pod Resources API GetAllocatableResources disabled")
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}
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metrics.PodResourcesEndpointRequestsTotalCount.WithLabelValues("v1").Inc()
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return &v1.AllocatableResourcesResponse{
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Devices: p.devicesProvider.GetAllocatableDevices(),
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CpuIds: p.cpusProvider.GetAllocatableCPUs(),
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}, nil
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}
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