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85bca3b684
DeviceTaintRule is off by default because the corresponding v1beta2 API group is off. When enabled, the potentially still disabled v1alpha3 API version was used instead of the new v1beta2, causing the scheduler to fail while setting up informers and then not scheduling pods.
965 lines
30 KiB
Go
965 lines
30 KiB
Go
/*
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Copyright 2023 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 noderesources
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import (
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"testing"
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"github.com/google/go-cmp/cmp"
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"github.com/stretchr/testify/assert"
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v1 "k8s.io/api/core/v1"
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resourceapi "k8s.io/api/resource/v1"
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"k8s.io/apimachinery/pkg/api/resource"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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apiruntime "k8s.io/apimachinery/pkg/runtime"
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"k8s.io/apimachinery/pkg/types"
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utilfeature "k8s.io/apiserver/pkg/util/feature"
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"k8s.io/client-go/informers"
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"k8s.io/client-go/kubernetes/fake"
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featuregatetesting "k8s.io/component-base/featuregate/testing"
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"k8s.io/dynamic-resource-allocation/cel"
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"k8s.io/dynamic-resource-allocation/deviceclass/extendedresourcecache"
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"k8s.io/dynamic-resource-allocation/resourceslice/tracker"
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"k8s.io/dynamic-resource-allocation/structured"
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fwk "k8s.io/kube-scheduler/framework"
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"k8s.io/kubernetes/pkg/features"
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"k8s.io/kubernetes/pkg/scheduler/apis/config"
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"k8s.io/kubernetes/pkg/scheduler/framework"
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"k8s.io/kubernetes/pkg/scheduler/framework/plugins/dynamicresources"
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st "k8s.io/kubernetes/pkg/scheduler/testing"
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"k8s.io/kubernetes/pkg/scheduler/util"
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"k8s.io/kubernetes/pkg/scheduler/util/assumecache"
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"k8s.io/kubernetes/test/utils/ktesting"
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"k8s.io/utils/ptr"
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)
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func TestResourceAllocationScorerCalculateRequests(t *testing.T) {
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const oneMi = 1048576
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tests := []struct {
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name string
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pod v1.Pod
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expected map[v1.ResourceName]int64
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}{
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{
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name: "overhead only",
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pod: v1.Pod{
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Spec: v1.PodSpec{
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Overhead: v1.ResourceList{
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v1.ResourceCPU: resource.MustParse("1"),
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v1.ResourceMemory: resource.MustParse("1Mi"),
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},
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},
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},
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expected: map[v1.ResourceName]int64{
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v1.ResourceCPU: 1000,
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v1.ResourceMemory: oneMi,
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},
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},
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{
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name: "1x requestless container",
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pod: v1.Pod{
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Spec: v1.PodSpec{
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Containers: []v1.Container{
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{},
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},
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},
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},
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expected: map[v1.ResourceName]int64{
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v1.ResourceCPU: util.DefaultMilliCPURequest,
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v1.ResourceMemory: util.DefaultMemoryRequest,
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},
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},
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{
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name: "2x requestless container",
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pod: v1.Pod{
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Spec: v1.PodSpec{
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Containers: []v1.Container{
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{}, {},
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},
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},
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},
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// should accumulate once per container without a request
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expected: map[v1.ResourceName]int64{
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v1.ResourceCPU: 2 * util.DefaultMilliCPURequest,
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v1.ResourceMemory: 2 * util.DefaultMemoryRequest,
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},
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},
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{
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name: "request container + requestless container",
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pod: v1.Pod{
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Spec: v1.PodSpec{
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Containers: []v1.Container{
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{
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Resources: v1.ResourceRequirements{
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Requests: v1.ResourceList{
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v1.ResourceCPU: resource.MustParse("1"),
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v1.ResourceMemory: resource.MustParse("1Mi"),
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},
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},
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},
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{},
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},
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},
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},
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expected: map[v1.ResourceName]int64{
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v1.ResourceCPU: 1000 + util.DefaultMilliCPURequest,
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v1.ResourceMemory: oneMi + util.DefaultMemoryRequest,
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},
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},
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{
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name: "container + requestless container + overhead",
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pod: v1.Pod{
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Spec: v1.PodSpec{
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Overhead: v1.ResourceList{
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v1.ResourceCPU: resource.MustParse("1"),
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v1.ResourceMemory: resource.MustParse("1Mi"),
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},
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Containers: []v1.Container{
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{
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Resources: v1.ResourceRequirements{
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Requests: v1.ResourceList{
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v1.ResourceCPU: resource.MustParse("1"),
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v1.ResourceMemory: resource.MustParse("1Mi"),
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},
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},
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},
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{},
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},
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},
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},
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expected: map[v1.ResourceName]int64{
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v1.ResourceCPU: 2000 + util.DefaultMilliCPURequest,
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v1.ResourceMemory: 2*oneMi + util.DefaultMemoryRequest,
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},
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},
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{
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name: "init container + container + requestless container + overhead",
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pod: v1.Pod{
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Spec: v1.PodSpec{
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Overhead: v1.ResourceList{
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v1.ResourceCPU: resource.MustParse("1"),
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v1.ResourceMemory: resource.MustParse("1Mi"),
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},
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InitContainers: []v1.Container{
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{
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Resources: v1.ResourceRequirements{
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Requests: v1.ResourceList{
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v1.ResourceCPU: resource.MustParse("3"),
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},
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},
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},
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},
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Containers: []v1.Container{
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{
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Resources: v1.ResourceRequirements{
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Requests: v1.ResourceList{
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v1.ResourceCPU: resource.MustParse("1"),
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v1.ResourceMemory: resource.MustParse("1Mi"),
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},
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},
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},
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{},
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},
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},
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},
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expected: map[v1.ResourceName]int64{
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v1.ResourceCPU: 4000,
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v1.ResourceMemory: 2*oneMi + util.DefaultMemoryRequest,
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},
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},
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{
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name: "requestless init container + small init container + small container ",
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pod: v1.Pod{
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Spec: v1.PodSpec{
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InitContainers: []v1.Container{
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{},
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{
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Resources: v1.ResourceRequirements{
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Requests: v1.ResourceList{
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v1.ResourceCPU: resource.MustParse("1m"),
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v1.ResourceMemory: resource.MustParse("1"),
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},
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},
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},
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},
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Containers: []v1.Container{
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{
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Resources: v1.ResourceRequirements{
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Requests: v1.ResourceList{
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v1.ResourceCPU: resource.MustParse("3m"),
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v1.ResourceMemory: resource.MustParse("3"),
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},
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},
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},
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},
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},
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},
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expected: map[v1.ResourceName]int64{
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v1.ResourceCPU: util.DefaultMilliCPURequest,
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v1.ResourceMemory: util.DefaultMemoryRequest,
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},
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},
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{
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name: "requestless init container + small init container + small container + requestless container ",
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pod: v1.Pod{
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Spec: v1.PodSpec{
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InitContainers: []v1.Container{
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{},
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{
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Resources: v1.ResourceRequirements{
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Requests: v1.ResourceList{
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v1.ResourceCPU: resource.MustParse("1m"),
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v1.ResourceMemory: resource.MustParse("1"),
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},
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},
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},
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},
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Containers: []v1.Container{
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{
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Resources: v1.ResourceRequirements{
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Requests: v1.ResourceList{
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v1.ResourceCPU: resource.MustParse("3m"),
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v1.ResourceMemory: resource.MustParse("3"),
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},
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},
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},
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{},
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},
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},
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},
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expected: map[v1.ResourceName]int64{
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v1.ResourceCPU: 3 + util.DefaultMilliCPURequest,
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v1.ResourceMemory: 3 + util.DefaultMemoryRequest,
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},
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},
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}
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for _, tc := range tests {
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t.Run(tc.name, func(t *testing.T) {
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var scorer resourceAllocationScorer
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for n, exp := range tc.expected {
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got := scorer.calculatePodResourceRequest(&tc.pod, n)
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if got != exp {
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t.Errorf("expected %s = %d, got %d", n, exp, got)
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}
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}
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})
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}
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}
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func TestCalculateResourceAllocatableRequest(t *testing.T) {
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testCalculateResourceAllocatableRequest(ktesting.Init(t))
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}
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func testCalculateResourceAllocatableRequest(tCtx ktesting.TContext) {
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// Initialize test variables
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nodeName := "resource-node"
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driverName := "test-driver"
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testClaim := "test-claim"
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explicitExtendedResource := v1.ResourceName(extendedResourceName)
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implicitExtendedResource := v1.ResourceName(resourceapi.ResourceDeviceClassPrefix + deviceClassName)
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celCache := cel.NewCache(10, cel.Features{EnableConsumableCapacity: true})
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draFeatures := structured.Features{
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AdminAccess: true,
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PrioritizedList: true,
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PartitionableDevices: true,
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DeviceTaints: true,
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DeviceBindingAndStatus: true,
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ConsumableCapacity: true,
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}
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// Define test cases
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tests := map[string]struct {
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enableDRAExtendedResource bool
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node *v1.Node
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extendedResource v1.ResourceName
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draObjects []apiruntime.Object
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expectedAllocatable int64
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expectedAllocated int64
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}{
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"device-plugin-resource-feature-disabled": {
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enableDRAExtendedResource: false,
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node: st.MakeNode().Name(nodeName).Capacity(map[v1.ResourceName]string{explicitExtendedResource: "4"}).Obj(),
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extendedResource: explicitExtendedResource,
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expectedAllocatable: 4,
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expectedAllocated: 0,
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},
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"device-plugin-resource-feature-enabled": {
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enableDRAExtendedResource: true,
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node: st.MakeNode().Name(nodeName).Capacity(map[v1.ResourceName]string{explicitExtendedResource: "4"}).Obj(),
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extendedResource: explicitExtendedResource,
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expectedAllocatable: 4,
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expectedAllocated: 0,
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},
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"DRA-backed-resource-explicit": {
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enableDRAExtendedResource: true,
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node: st.MakeNode().Name(nodeName).Obj(),
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extendedResource: explicitExtendedResource,
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draObjects: []apiruntime.Object{
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deviceClassWithExtendResourceName,
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st.MakeResourceSlice(nodeName, driverName).Device("device-1").Obj(),
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},
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expectedAllocatable: 1, // 1 device `device-1`
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expectedAllocated: 0,
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},
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"DRA-backed-resource-implicit": {
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enableDRAExtendedResource: true,
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node: st.MakeNode().Name(nodeName).Obj(),
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extendedResource: implicitExtendedResource,
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draObjects: []apiruntime.Object{
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&resourceapi.DeviceClass{
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ObjectMeta: metav1.ObjectMeta{
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Name: deviceClassName,
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},
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},
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st.MakeResourceSlice(nodeName, driverName).Device("device-1").Obj(),
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},
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expectedAllocatable: 1, // 1 device `device-1`
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expectedAllocated: 0,
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},
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"DRA-backed-resource-no-slices": {
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enableDRAExtendedResource: true,
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node: st.MakeNode().Name(nodeName).Obj(),
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extendedResource: explicitExtendedResource,
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draObjects: []apiruntime.Object{
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deviceClassWithExtendResourceName,
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},
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expectedAllocatable: 0,
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expectedAllocated: 0,
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},
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"DRA-backed-resource-with-allocated-device": {
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enableDRAExtendedResource: true,
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node: st.MakeNode().Name(nodeName).Obj(),
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extendedResource: explicitExtendedResource,
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draObjects: []apiruntime.Object{
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deviceClassWithExtendResourceName,
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st.MakeResourceSlice(nodeName, driverName).Devices("device-1", "device-2").Obj(),
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// Create a resource claim that fully allocates device-1
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st.MakeResourceClaim().
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Name(testClaim).
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Request(deviceClassName).
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Allocation(&resourceapi.AllocationResult{
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Devices: resourceapi.DeviceAllocationResult{
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Results: []resourceapi.DeviceRequestAllocationResult{
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{
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Request: "req-1",
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Driver: driverName,
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Pool: nodeName,
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Device: "device-1",
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},
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},
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},
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}).
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Obj(),
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},
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expectedAllocatable: 2, // 2 allocatable devices `device-1`, `device-2`
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expectedAllocated: 1, // 1 allocated by `testClaim`
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},
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"DRA-backed-resource-with-shared-device-allocation": {
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enableDRAExtendedResource: true,
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node: st.MakeNode().Name(nodeName).Obj(),
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extendedResource: explicitExtendedResource,
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draObjects: []apiruntime.Object{
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deviceClassWithExtendResourceName,
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st.MakeResourceSlice(nodeName, driverName).Devices("device-1", "device-2").Obj(),
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// Create a resource claim with shared device allocation (consumable capacity)
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st.MakeResourceClaim().
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Name(testClaim).
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Request(deviceClassName).
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Allocation(&resourceapi.AllocationResult{
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Devices: resourceapi.DeviceAllocationResult{
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Results: []resourceapi.DeviceRequestAllocationResult{
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{
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Request: "req-1",
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Driver: driverName,
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Pool: nodeName,
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Device: "device-1",
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ShareID: ptr.To(types.UID("share-123")), // Shared device allocation
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},
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},
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},
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}).
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Obj(),
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},
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expectedAllocatable: 2, // 2 allocatable devices `device-1`, `device-2`
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expectedAllocated: 1, // 1 allocated (shared) by `testClaim`
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},
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"DRA-backed-resource-multiple-devices-mixed-allocation": {
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enableDRAExtendedResource: true,
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node: st.MakeNode().Name(nodeName).Obj(),
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extendedResource: explicitExtendedResource,
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draObjects: []apiruntime.Object{
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deviceClassWithExtendResourceName,
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st.MakeResourceSlice(nodeName, driverName).Devices("device-1", "device-2", "device-3").Obj(),
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// Mix of fully allocated and shared device allocations
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st.MakeResourceClaim().
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Name("test-claim-1").
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Request(deviceClassName).
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Allocation(&resourceapi.AllocationResult{
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Devices: resourceapi.DeviceAllocationResult{
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Results: []resourceapi.DeviceRequestAllocationResult{
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{
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Request: "req-1",
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Driver: driverName,
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Pool: nodeName,
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Device: "device-1",
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// No ShareID = fully allocated device
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},
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},
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},
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}).
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Obj(),
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st.MakeResourceClaim().
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Name("test-claim-2").
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Request(deviceClassName).
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Allocation(&resourceapi.AllocationResult{
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Devices: resourceapi.DeviceAllocationResult{
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Results: []resourceapi.DeviceRequestAllocationResult{
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{
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Request: "req-1",
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Driver: driverName,
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Pool: nodeName,
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Device: "device-2",
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ShareID: ptr.To(types.UID("share-456")), // Shared device allocation
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},
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},
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},
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}).
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Obj(),
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// device-3 remains unallocated
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},
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expectedAllocatable: 3, // 3 allocatable devices `device-1`, `device-2`, `device-3`
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expectedAllocated: 2, // 2 allocated (1 full `test-claim-1` + 1 shared `test-claim-2`)
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},
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"DRA-backed-resource-with-per-device-node-selection": {
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enableDRAExtendedResource: true,
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node: st.MakeNode().Name(nodeName).Label("zone", "us-east-1a").Obj(),
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extendedResource: explicitExtendedResource,
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draObjects: []apiruntime.Object{
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&resourceapi.DeviceClass{
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ObjectMeta: metav1.ObjectMeta{
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Name: deviceClassName,
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},
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Spec: resourceapi.DeviceClassSpec{
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ExtendedResourceName: &extendedResourceName,
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Selectors: []resourceapi.DeviceSelector{
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{
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CEL: &resourceapi.CELDeviceSelector{
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// Realistic GPU selection: match test driver with at least 8GB memory and SOME- model
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Expression: `device.driver == "test-driver" && device.capacity["test-driver"].memory.compareTo(quantity("8Gi")) >= 0 && device.attributes["test-driver"].model.startsWith("SOME-")`,
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},
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},
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},
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},
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},
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// Create a custom resource slice with per-device node selection
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&resourceapi.ResourceSlice{
|
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ObjectMeta: metav1.ObjectMeta{Name: "per-device-slice"},
|
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Spec: resourceapi.ResourceSliceSpec{
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Driver: driverName, // Match the CEL expression driver
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Pool: resourceapi.ResourcePool{Name: "per-device-pool", ResourceSliceCount: 1},
|
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PerDeviceNodeSelection: ptr.To(true), // Enable per-device node selection
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// Note: No NodeName, AllNodes, or NodeSelector at slice level when PerDeviceNodeSelection is true
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Devices: []resourceapi.Device{
|
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{
|
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Name: "device-1",
|
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NodeName: ptr.To(nodeName), // This device matches the test node
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Attributes: map[resourceapi.QualifiedName]resourceapi.DeviceAttribute{
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"model": {StringValue: ptr.To("SOME-XYZ")},
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},
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Capacity: map[resourceapi.QualifiedName]resourceapi.DeviceCapacity{
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"memory": {Value: resource.MustParse("16Gi")}, // 16GB GPU - matches CEL (>= 8GB)
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},
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},
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{
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Name: "device-2",
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NodeName: ptr.To("other-node"), // This device matches a different node
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Attributes: map[resourceapi.QualifiedName]resourceapi.DeviceAttribute{
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"model": {StringValue: ptr.To("SOME-ZYX")},
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},
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Capacity: map[resourceapi.QualifiedName]resourceapi.DeviceCapacity{
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"memory": {Value: resource.MustParse("12Gi")}, // 12GB GPU - matches CEL (>= 8GB)
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},
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},
|
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{
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Name: "device-3",
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// Use a node selector to ensure nodeMatches is exercised for this device
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|
NodeSelector: &v1.NodeSelector{
|
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NodeSelectorTerms: []v1.NodeSelectorTerm{
|
|
{
|
|
MatchExpressions: []v1.NodeSelectorRequirement{
|
|
{
|
|
Key: "zone",
|
|
Operator: v1.NodeSelectorOpIn,
|
|
Values: []string{"us-east-1a"},
|
|
},
|
|
},
|
|
},
|
|
},
|
|
},
|
|
Attributes: map[resourceapi.QualifiedName]resourceapi.DeviceAttribute{
|
|
"model": {StringValue: ptr.To("SOME-XZY")},
|
|
},
|
|
Capacity: map[resourceapi.QualifiedName]resourceapi.DeviceCapacity{
|
|
"memory": {Value: resource.MustParse("24Gi")}, // 24GB GPU - matches CEL (>= 8GiB)
|
|
},
|
|
},
|
|
},
|
|
},
|
|
},
|
|
// Create a resource claim that allocates gpu-1
|
|
st.MakeResourceClaim().
|
|
Name("test-claim").
|
|
Request(deviceClassName).
|
|
Allocation(&resourceapi.AllocationResult{
|
|
Devices: resourceapi.DeviceAllocationResult{
|
|
Results: []resourceapi.DeviceRequestAllocationResult{
|
|
{
|
|
Request: "req-1",
|
|
Driver: driverName,
|
|
Pool: "per-device-pool",
|
|
Device: "device-1",
|
|
},
|
|
},
|
|
},
|
|
}).
|
|
Obj(),
|
|
},
|
|
expectedAllocatable: 2, // device-1 matches the test node and device-3 matches via its selector
|
|
expectedAllocated: 1, // 1 allocated (device-1)
|
|
},
|
|
}
|
|
|
|
for name, tc := range tests {
|
|
tCtx.SyncTest(name, func(tCtx ktesting.TContext) {
|
|
// Setup environment, create required objects
|
|
featuregatetesting.SetFeatureGateDuringTest(tCtx, utilfeature.DefaultFeatureGate, features.DRAExtendedResource, tc.enableDRAExtendedResource)
|
|
|
|
draManager := newTestDRAManager(tCtx, tc.draObjects...)
|
|
|
|
nodeInfo := framework.NewNodeInfo()
|
|
nodeInfo.SetNode(tc.node)
|
|
|
|
scorer := &resourceAllocationScorer{
|
|
enableDRAExtendedResource: tc.enableDRAExtendedResource,
|
|
draManager: draManager,
|
|
draFeatures: draFeatures,
|
|
DRACaches: DRACaches{
|
|
celCache: celCache,
|
|
},
|
|
}
|
|
|
|
var draPreScoreState *draPreScoreState
|
|
if tc.enableDRAExtendedResource {
|
|
var status *fwk.Status
|
|
draPreScoreState, status = getDRAPreScoredParams(draManager, []config.ResourceSpec{{Name: string(tc.extendedResource)}})
|
|
if status != nil {
|
|
tCtx.Fatalf("getting DRA pre-scored params failed: %v", status)
|
|
}
|
|
}
|
|
|
|
// Test calculateResourceAllocatableRequest API
|
|
allocatable, allocated := scorer.calculateResourceAllocatableRequest(tCtx, nodeInfo, tc.extendedResource, draPreScoreState)
|
|
if !cmp.Equal(allocatable, tc.expectedAllocatable) {
|
|
tCtx.Errorf("Expected allocatable=%v, but got %v", tc.expectedAllocatable, allocatable)
|
|
}
|
|
if !cmp.Equal(allocated, tc.expectedAllocated) {
|
|
tCtx.Errorf("Expected allocated=%v, but got %v", tc.expectedAllocated, allocated)
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
// newTestDRAManager creates a DefaultDRAManager for testing purposes.
|
|
// Only usable in a syntest bubble.
|
|
func newTestDRAManager(tCtx ktesting.TContext, objects ...apiruntime.Object) *dynamicresources.DefaultDRAManager {
|
|
tCtx = tCtx.WithCancel()
|
|
client := fake.NewClientset(objects...)
|
|
informerFactory := informers.NewSharedInformerFactory(client, 0)
|
|
resourceSliceTrackerOpts := tracker.Options{
|
|
SliceInformer: informerFactory.Resource().V1().ResourceSlices(),
|
|
TaintInformer: informerFactory.Resource().V1beta2().DeviceTaintRules(),
|
|
ClassInformer: informerFactory.Resource().V1().DeviceClasses(),
|
|
KubeClient: client,
|
|
}
|
|
resourceSliceTracker, err := tracker.StartTracker(tCtx, resourceSliceTrackerOpts)
|
|
tCtx.ExpectNoError(err, "couldn't start resource slice tracker")
|
|
draManager := dynamicresources.NewDRAManager(
|
|
tCtx,
|
|
assumecache.NewAssumeCache(
|
|
tCtx.Logger(),
|
|
informerFactory.Resource().V1().ResourceClaims().Informer(),
|
|
"resource claim",
|
|
"",
|
|
nil),
|
|
resourceSliceTracker,
|
|
informerFactory)
|
|
|
|
cache := draManager.DeviceClassResolver().(*extendedresourcecache.ExtendedResourceCache)
|
|
handle, err := informerFactory.Resource().V1().DeviceClasses().Informer().AddEventHandler(cache)
|
|
tCtx.ExpectNoError(err, "add device class informer event handler")
|
|
tCtx.Cleanup(func() {
|
|
_ = informerFactory.Resource().V1().DeviceClasses().Informer().RemoveEventHandler(handle)
|
|
})
|
|
|
|
informerFactory.Start(tCtx.Done())
|
|
tCtx.Cleanup(func() {
|
|
tCtx.Cancel("test has completed")
|
|
// Now we can wait for all goroutines to stop.
|
|
informerFactory.Shutdown()
|
|
})
|
|
informerFactory.WaitForCacheSync(tCtx.Done())
|
|
|
|
// Wait for full initialization of manager, including
|
|
// processing of all informer events.
|
|
tCtx.Wait()
|
|
|
|
return draManager
|
|
}
|
|
|
|
// getCachedDeviceMatch checks the cache for a DeviceMatches result
|
|
// returns (matches, found)
|
|
func (r *resourceAllocationScorer) getCachedDeviceMatch(expression string, driver string, poolName string, deviceName string) (bool, bool) {
|
|
key := buildDeviceMatchCacheKey(expression, driver, poolName, deviceName)
|
|
|
|
if value, ok := r.deviceMatchCache.Load(key); ok {
|
|
return value.(bool), true
|
|
}
|
|
|
|
return false, false
|
|
}
|
|
|
|
// setCachedDeviceMatch stores a DeviceMatches result in the cache
|
|
func (r *resourceAllocationScorer) setCachedDeviceMatch(expression string, driver string, poolName string, deviceName string, matches bool) {
|
|
key := buildDeviceMatchCacheKey(expression, driver, poolName, deviceName)
|
|
r.deviceMatchCache.Store(key, matches)
|
|
}
|
|
|
|
func TestDeviceMatchCaching(t *testing.T) {
|
|
// Create a scorer with caching enabled
|
|
scorer := &resourceAllocationScorer{
|
|
DRACaches: DRACaches{
|
|
celCache: cel.NewCache(10, cel.Features{}),
|
|
},
|
|
}
|
|
|
|
expression := `device.attributes["example.com"].test_attr == "test-value"`
|
|
driverName := "example.com/test-driver"
|
|
poolName := "example-pool"
|
|
deviceName := "device-1"
|
|
|
|
// Test cache operations
|
|
// Initially, cache should be empty
|
|
matches, found := scorer.getCachedDeviceMatch(expression, driverName, poolName, deviceName)
|
|
if found {
|
|
t.Errorf("Cache should be empty initially, but found an entry")
|
|
}
|
|
if matches {
|
|
t.Errorf("Matches should be false initially, but got true")
|
|
}
|
|
|
|
// Store a result in cache
|
|
scorer.setCachedDeviceMatch(expression, driverName, poolName, deviceName, true)
|
|
|
|
// Retrieve from cache
|
|
matches, found = scorer.getCachedDeviceMatch(expression, driverName, poolName, deviceName)
|
|
if !found {
|
|
t.Errorf("Result should be found in cache, but was not")
|
|
}
|
|
if !matches {
|
|
t.Errorf("Cached result should match what we stored, expected true but got false")
|
|
}
|
|
|
|
// Test caching with error
|
|
scorer.setCachedDeviceMatch(expression, driverName, poolName, deviceName, false)
|
|
|
|
matches, found = scorer.getCachedDeviceMatch(expression, driverName, poolName, deviceName)
|
|
if !found {
|
|
t.Errorf("Result should be found in cache")
|
|
}
|
|
if matches {
|
|
t.Errorf("Cached result should match what we stored, expected false but got true")
|
|
}
|
|
|
|
// Test that different devices have different cache keys
|
|
matches, found = scorer.getCachedDeviceMatch(expression, driverName, poolName, "device-2")
|
|
if found {
|
|
t.Errorf("Different device should not hit cache")
|
|
}
|
|
if matches {
|
|
t.Errorf("Matches should be false for uncached entry")
|
|
}
|
|
|
|
// Test that different pools have different cache keys
|
|
matches, found = scorer.getCachedDeviceMatch(expression, driverName, "other-pool", deviceName)
|
|
if found {
|
|
t.Errorf("Different pool should not hit cache")
|
|
}
|
|
if matches {
|
|
t.Errorf("Matches should be false for uncached entry")
|
|
}
|
|
}
|
|
|
|
func BenchmarkDeviceMatchCaching(b *testing.B) {
|
|
expression := `device.attributes["example.com"].test_attr == "test-value"`
|
|
driverName := "example.com/test-driver"
|
|
poolName := "example-pool"
|
|
deviceName := "device-1"
|
|
|
|
// Create a scorer with caching enabled
|
|
scorer := &resourceAllocationScorer{
|
|
DRACaches: DRACaches{
|
|
celCache: cel.NewCache(10, cel.Features{}),
|
|
},
|
|
}
|
|
|
|
b.Run("WithoutCache", func(b *testing.B) {
|
|
// Disable caching by creating a new scorer each time
|
|
for i := 0; i < b.N; i++ {
|
|
freshScorer := &resourceAllocationScorer{
|
|
DRACaches: DRACaches{
|
|
celCache: cel.NewCache(10, cel.Features{}),
|
|
},
|
|
}
|
|
|
|
// This will always be a cache miss
|
|
_, _ = freshScorer.getCachedDeviceMatch(expression, driverName, poolName, deviceName)
|
|
}
|
|
})
|
|
|
|
b.Run("WithCache", func(b *testing.B) {
|
|
// Pre-warm the cache
|
|
scorer.setCachedDeviceMatch(expression, driverName, poolName, deviceName, true)
|
|
|
|
b.ResetTimer()
|
|
for i := 0; i < b.N; i++ {
|
|
// This should always be a cache hit
|
|
_, _ = scorer.getCachedDeviceMatch(expression, driverName, poolName, deviceName)
|
|
}
|
|
})
|
|
}
|
|
|
|
// getCachedNodeMatch checks the cache for a NodeMatches result
|
|
func (r *resourceAllocationScorer) getCachedNodeMatch(nodeName string, nodeNameToMatch string, allNodesMatch bool, nodeSelectorHash string) (bool, bool) {
|
|
key := buildNodeMatchCacheKey(nodeName, nodeNameToMatch, allNodesMatch, nodeSelectorHash)
|
|
|
|
if value, ok := r.nodeMatchCache.Load(key); ok {
|
|
return value.(bool), true
|
|
}
|
|
|
|
return false, false
|
|
}
|
|
|
|
// setCachedNodeMatch stores a NodeMatches result in the cache
|
|
func (r *resourceAllocationScorer) setCachedNodeMatch(nodeName string, nodeNameToMatch string, allNodesMatch bool, nodeSelectorHash string, matches bool) {
|
|
key := buildNodeMatchCacheKey(nodeName, nodeNameToMatch, allNodesMatch, nodeSelectorHash)
|
|
r.nodeMatchCache.Store(key, matches)
|
|
}
|
|
|
|
func TestNodeMatchCaching(t *testing.T) {
|
|
// Create a scorer with caching enabled
|
|
scorer := &resourceAllocationScorer{
|
|
DRACaches: DRACaches{
|
|
celCache: cel.NewCache(10, cel.Features{}),
|
|
},
|
|
}
|
|
|
|
// Create test node
|
|
testNode := &v1.Node{
|
|
ObjectMeta: metav1.ObjectMeta{
|
|
Name: "test-node-1",
|
|
Labels: map[string]string{
|
|
"zone": "us-east-1a",
|
|
"instance.type": "gpu-xlarge",
|
|
},
|
|
},
|
|
}
|
|
|
|
// Test cases for different NodeMatches scenarios
|
|
testCases := []struct {
|
|
name string
|
|
nodeNameToMatch string
|
|
allNodesMatch bool
|
|
nodeSelector *v1.NodeSelector
|
|
expectedMatch bool
|
|
}{
|
|
{
|
|
name: "exact node name match",
|
|
nodeNameToMatch: "test-node-1",
|
|
allNodesMatch: false,
|
|
nodeSelector: nil,
|
|
expectedMatch: true,
|
|
},
|
|
{
|
|
name: "node name mismatch",
|
|
nodeNameToMatch: "different-node",
|
|
allNodesMatch: false,
|
|
nodeSelector: nil,
|
|
expectedMatch: false,
|
|
},
|
|
{
|
|
name: "all nodes match",
|
|
nodeNameToMatch: "",
|
|
allNodesMatch: true,
|
|
nodeSelector: nil,
|
|
expectedMatch: true,
|
|
},
|
|
{
|
|
name: "node selector match",
|
|
nodeNameToMatch: "",
|
|
allNodesMatch: false,
|
|
nodeSelector: &v1.NodeSelector{
|
|
NodeSelectorTerms: []v1.NodeSelectorTerm{
|
|
{
|
|
MatchExpressions: []v1.NodeSelectorRequirement{
|
|
{
|
|
Key: "zone",
|
|
Operator: v1.NodeSelectorOpIn,
|
|
Values: []string{"us-east-1a", "us-east-1b"},
|
|
},
|
|
},
|
|
},
|
|
},
|
|
},
|
|
expectedMatch: true,
|
|
},
|
|
}
|
|
|
|
for _, tc := range testCases {
|
|
t.Run(tc.name, func(t *testing.T) {
|
|
nodeSelectorStr := tc.nodeSelector.String()
|
|
|
|
// First call should be a cache miss
|
|
_, found1 := scorer.getCachedNodeMatch(testNode.Name, tc.nodeNameToMatch, tc.allNodesMatch, nodeSelectorStr)
|
|
assert.False(t, found1, "Cache should be empty initially")
|
|
|
|
// Simulate setting a cached result
|
|
scorer.setCachedNodeMatch(testNode.Name, tc.nodeNameToMatch, tc.allNodesMatch, nodeSelectorStr, tc.expectedMatch)
|
|
|
|
// Second call should be a cache hit
|
|
matches2, found2 := scorer.getCachedNodeMatch(testNode.Name, tc.nodeNameToMatch, tc.allNodesMatch, nodeSelectorStr)
|
|
assert.True(t, found2, "Result should be found in cache")
|
|
assert.Equal(t, tc.expectedMatch, matches2, "Cached result should match expected value")
|
|
})
|
|
}
|
|
}
|
|
|
|
func TestNodeMatchesCacheHit(t *testing.T) {
|
|
scorer := &resourceAllocationScorer{
|
|
DRACaches: DRACaches{
|
|
celCache: cel.NewCache(1, cel.Features{}),
|
|
},
|
|
}
|
|
|
|
node := st.MakeNode().Name("cache-node").Label("zone", "us-east-1a").Obj()
|
|
selector := &v1.NodeSelector{
|
|
NodeSelectorTerms: []v1.NodeSelectorTerm{
|
|
{
|
|
MatchExpressions: []v1.NodeSelectorRequirement{
|
|
{
|
|
Key: "zone",
|
|
Operator: v1.NodeSelectorOpIn,
|
|
Values: []string{"us-east-1a"},
|
|
},
|
|
},
|
|
},
|
|
},
|
|
}
|
|
|
|
firstMatch, err := scorer.nodeMatches(node, "", false, selector)
|
|
if err != nil {
|
|
t.Fatalf("unexpected error while evaluating selector: %v", err)
|
|
}
|
|
if !firstMatch {
|
|
t.Fatalf("expected nodeMatches to return true for the selector")
|
|
}
|
|
|
|
secondMatch, err := scorer.nodeMatches(node, "", false, selector)
|
|
if err != nil {
|
|
t.Fatalf("unexpected error while hitting cache: %v", err)
|
|
}
|
|
if !secondMatch {
|
|
t.Fatalf("expected cached nodeMatches to be true")
|
|
}
|
|
}
|
|
|
|
func BenchmarkNodeMatchCaching(b *testing.B) {
|
|
// Create test node
|
|
testNode := &v1.Node{
|
|
ObjectMeta: metav1.ObjectMeta{
|
|
Name: "test-node-1",
|
|
Labels: map[string]string{
|
|
"zone": "us-east-1a",
|
|
"instance.type": "gpu-xlarge",
|
|
},
|
|
},
|
|
}
|
|
|
|
// Create a complex NodeSelector to make the test meaningful
|
|
nodeSelector := &v1.NodeSelector{
|
|
NodeSelectorTerms: []v1.NodeSelectorTerm{
|
|
{
|
|
MatchExpressions: []v1.NodeSelectorRequirement{
|
|
{
|
|
Key: "zone",
|
|
Operator: v1.NodeSelectorOpIn,
|
|
Values: []string{"us-east-1a", "us-east-1b", "us-west-2a"},
|
|
},
|
|
{
|
|
Key: "instance.type",
|
|
Operator: v1.NodeSelectorOpExists,
|
|
},
|
|
},
|
|
},
|
|
},
|
|
}
|
|
|
|
b.Run("WithoutCache", func(b *testing.B) {
|
|
nodeSelectorStr := nodeSelector.String()
|
|
|
|
// Create a new scorer for each iteration to avoid caching
|
|
for i := 0; i < b.N; i++ {
|
|
freshScorer := &resourceAllocationScorer{
|
|
DRACaches: DRACaches{
|
|
celCache: cel.NewCache(10, cel.Features{}),
|
|
},
|
|
}
|
|
|
|
// This will always be a cache miss
|
|
_, _ = freshScorer.getCachedNodeMatch(testNode.Name, "", false, nodeSelectorStr)
|
|
}
|
|
})
|
|
|
|
b.Run("WithCache", func(b *testing.B) {
|
|
nodeSelectorStr := nodeSelector.String()
|
|
|
|
// Create a scorer and pre-warm the cache
|
|
scorer := &resourceAllocationScorer{
|
|
DRACaches: DRACaches{
|
|
celCache: cel.NewCache(10, cel.Features{}),
|
|
},
|
|
}
|
|
|
|
// Pre-warm the cache
|
|
scorer.setCachedNodeMatch(testNode.Name, "", false, nodeSelectorStr, true)
|
|
|
|
b.ResetTimer()
|
|
for i := 0; i < b.N; i++ {
|
|
// This should always be a cache hit
|
|
_, _ = scorer.getCachedNodeMatch(testNode.Name, "", false, nodeSelectorStr)
|
|
}
|
|
})
|
|
}
|