1767 lines
64 KiB
Go
1767 lines
64 KiB
Go
/*
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Copyright 2017 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 predicates
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import (
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"fmt"
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"reflect"
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"sort"
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"testing"
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v1 "k8s.io/api/core/v1"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/labels"
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fakelisters "k8s.io/kubernetes/pkg/scheduler/listers/fake"
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schedulernodeinfo "k8s.io/kubernetes/pkg/scheduler/nodeinfo"
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nodeinfosnapshot "k8s.io/kubernetes/pkg/scheduler/nodeinfo/snapshot"
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st "k8s.io/kubernetes/pkg/scheduler/testing"
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)
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// sortablePods lets us to sort pods.
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type sortablePods []*v1.Pod
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func (s sortablePods) Less(i, j int) bool {
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return s[i].Namespace < s[j].Namespace ||
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(s[i].Namespace == s[j].Namespace && s[i].Name < s[j].Name)
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}
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func (s sortablePods) Len() int { return len(s) }
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func (s sortablePods) Swap(i, j int) { s[i], s[j] = s[j], s[i] }
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var _ sort.Interface = &sortablePods{}
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// sortableServices allows us to sort services.
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type sortableServices []*v1.Service
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func (s sortableServices) Less(i, j int) bool {
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return s[i].Namespace < s[j].Namespace ||
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(s[i].Namespace == s[j].Namespace && s[i].Name < s[j].Name)
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}
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func (s sortableServices) Len() int { return len(s) }
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func (s sortableServices) Swap(i, j int) { s[i], s[j] = s[j], s[i] }
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var _ sort.Interface = &sortableServices{}
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// predicateMetadataEquivalent returns true if the two metadata are equivalent.
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// Note: this function does not compare podRequest.
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func predicateMetadataEquivalent(meta1, meta2 *predicateMetadata) error {
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if !reflect.DeepEqual(meta1.pod, meta2.pod) {
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return fmt.Errorf("pods are not the same")
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}
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if meta1.podBestEffort != meta2.podBestEffort {
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return fmt.Errorf("podBestEfforts are not equal")
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}
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if len(meta1.podFitsHostPortsMetadata.podPorts) != len(meta2.podFitsHostPortsMetadata.podPorts) {
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return fmt.Errorf("podPorts are not equal")
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}
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for !reflect.DeepEqual(meta1.podFitsHostPortsMetadata.podPorts, meta2.podFitsHostPortsMetadata.podPorts) {
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return fmt.Errorf("podPorts are not equal")
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}
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if !reflect.DeepEqual(meta1.podAffinityMetadata.topologyPairsPotentialAffinityPods, meta2.podAffinityMetadata.topologyPairsPotentialAffinityPods) {
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return fmt.Errorf("topologyPairsPotentialAffinityPods are not equal")
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}
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if !reflect.DeepEqual(meta1.podAffinityMetadata.topologyPairsPotentialAntiAffinityPods, meta2.podAffinityMetadata.topologyPairsPotentialAntiAffinityPods) {
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return fmt.Errorf("topologyPairsPotentialAntiAffinityPods are not equal")
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}
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if !reflect.DeepEqual(meta1.podAffinityMetadata.topologyPairsAntiAffinityPodsMap.podToTopologyPairs,
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meta2.podAffinityMetadata.topologyPairsAntiAffinityPodsMap.podToTopologyPairs) {
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return fmt.Errorf("topologyPairsAntiAffinityPodsMap.podToTopologyPairs are not equal")
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}
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if !reflect.DeepEqual(meta1.podAffinityMetadata.topologyPairsAntiAffinityPodsMap.topologyPairToPods,
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meta2.podAffinityMetadata.topologyPairsAntiAffinityPodsMap.topologyPairToPods) {
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return fmt.Errorf("topologyPairsAntiAffinityPodsMap.topologyPairToPods are not equal")
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}
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if meta1.serviceAffinityMetadata != nil {
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sortablePods1 := sortablePods(meta1.serviceAffinityMetadata.matchingPodList)
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sort.Sort(sortablePods1)
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sortablePods2 := sortablePods(meta2.serviceAffinityMetadata.matchingPodList)
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sort.Sort(sortablePods2)
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if !reflect.DeepEqual(sortablePods1, sortablePods2) {
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return fmt.Errorf("serviceAffinityMatchingPodLists are not euqal")
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}
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sortableServices1 := sortableServices(meta1.serviceAffinityMetadata.matchingPodServices)
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sort.Sort(sortableServices1)
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sortableServices2 := sortableServices(meta2.serviceAffinityMetadata.matchingPodServices)
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sort.Sort(sortableServices2)
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if !reflect.DeepEqual(sortableServices1, sortableServices2) {
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return fmt.Errorf("serviceAffinityMatchingPodServices are not euqal")
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}
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}
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return nil
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}
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func TestPredicateMetadata_AddRemovePod(t *testing.T) {
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var label1 = map[string]string{
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"region": "r1",
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"zone": "z11",
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}
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var label2 = map[string]string{
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"region": "r1",
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"zone": "z12",
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}
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var label3 = map[string]string{
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"region": "r2",
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"zone": "z21",
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}
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selector1 := map[string]string{"foo": "bar"}
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antiAffinityFooBar := &v1.PodAntiAffinity{
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RequiredDuringSchedulingIgnoredDuringExecution: []v1.PodAffinityTerm{
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{
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LabelSelector: &metav1.LabelSelector{
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MatchExpressions: []metav1.LabelSelectorRequirement{
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{
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Key: "foo",
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Operator: metav1.LabelSelectorOpIn,
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Values: []string{"bar"},
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},
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},
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},
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TopologyKey: "region",
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},
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},
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}
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antiAffinityComplex := &v1.PodAntiAffinity{
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RequiredDuringSchedulingIgnoredDuringExecution: []v1.PodAffinityTerm{
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{
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LabelSelector: &metav1.LabelSelector{
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MatchExpressions: []metav1.LabelSelectorRequirement{
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{
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Key: "foo",
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Operator: metav1.LabelSelectorOpIn,
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Values: []string{"bar", "buzz"},
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},
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},
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},
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TopologyKey: "region",
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},
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{
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LabelSelector: &metav1.LabelSelector{
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MatchExpressions: []metav1.LabelSelectorRequirement{
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{
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Key: "service",
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Operator: metav1.LabelSelectorOpNotIn,
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Values: []string{"bar", "security", "test"},
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},
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},
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},
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TopologyKey: "zone",
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},
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},
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}
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affinityComplex := &v1.PodAffinity{
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RequiredDuringSchedulingIgnoredDuringExecution: []v1.PodAffinityTerm{
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{
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LabelSelector: &metav1.LabelSelector{
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MatchExpressions: []metav1.LabelSelectorRequirement{
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{
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Key: "foo",
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Operator: metav1.LabelSelectorOpIn,
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Values: []string{"bar", "buzz"},
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},
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},
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},
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TopologyKey: "region",
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},
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{
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LabelSelector: &metav1.LabelSelector{
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MatchExpressions: []metav1.LabelSelectorRequirement{
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{
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Key: "service",
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Operator: metav1.LabelSelectorOpNotIn,
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Values: []string{"bar", "security", "test"},
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},
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},
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},
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TopologyKey: "zone",
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},
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},
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}
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tests := []struct {
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name string
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pendingPod *v1.Pod
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addedPod *v1.Pod
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existingPods []*v1.Pod
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nodes []*v1.Node
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services []*v1.Service
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}{
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{
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name: "no anti-affinity or service affinity exist",
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pendingPod: &v1.Pod{
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ObjectMeta: metav1.ObjectMeta{Name: "pending", Labels: selector1},
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},
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existingPods: []*v1.Pod{
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{ObjectMeta: metav1.ObjectMeta{Name: "p1", Labels: selector1},
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Spec: v1.PodSpec{NodeName: "nodeA"},
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},
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{ObjectMeta: metav1.ObjectMeta{Name: "p2"},
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Spec: v1.PodSpec{NodeName: "nodeC"},
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},
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},
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addedPod: &v1.Pod{
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ObjectMeta: metav1.ObjectMeta{Name: "addedPod", Labels: selector1},
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Spec: v1.PodSpec{NodeName: "nodeB"},
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},
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nodes: []*v1.Node{
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{ObjectMeta: metav1.ObjectMeta{Name: "nodeA", Labels: label1}},
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{ObjectMeta: metav1.ObjectMeta{Name: "nodeB", Labels: label2}},
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{ObjectMeta: metav1.ObjectMeta{Name: "nodeC", Labels: label3}},
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},
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},
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{
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name: "metadata anti-affinity terms are updated correctly after adding and removing a pod",
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pendingPod: &v1.Pod{
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ObjectMeta: metav1.ObjectMeta{Name: "pending", Labels: selector1},
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},
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existingPods: []*v1.Pod{
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{ObjectMeta: metav1.ObjectMeta{Name: "p1", Labels: selector1},
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Spec: v1.PodSpec{NodeName: "nodeA"},
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},
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{ObjectMeta: metav1.ObjectMeta{Name: "p2"},
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Spec: v1.PodSpec{
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NodeName: "nodeC",
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Affinity: &v1.Affinity{
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PodAntiAffinity: antiAffinityFooBar,
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},
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},
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},
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},
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addedPod: &v1.Pod{
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ObjectMeta: metav1.ObjectMeta{Name: "addedPod", Labels: selector1},
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Spec: v1.PodSpec{
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NodeName: "nodeB",
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Affinity: &v1.Affinity{
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PodAntiAffinity: antiAffinityFooBar,
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},
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},
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},
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nodes: []*v1.Node{
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{ObjectMeta: metav1.ObjectMeta{Name: "nodeA", Labels: label1}},
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{ObjectMeta: metav1.ObjectMeta{Name: "nodeB", Labels: label2}},
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{ObjectMeta: metav1.ObjectMeta{Name: "nodeC", Labels: label3}},
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},
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},
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{
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name: "metadata service-affinity data are updated correctly after adding and removing a pod",
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pendingPod: &v1.Pod{
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ObjectMeta: metav1.ObjectMeta{Name: "pending", Labels: selector1},
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},
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existingPods: []*v1.Pod{
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{ObjectMeta: metav1.ObjectMeta{Name: "p1", Labels: selector1},
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Spec: v1.PodSpec{NodeName: "nodeA"},
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},
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{ObjectMeta: metav1.ObjectMeta{Name: "p2"},
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Spec: v1.PodSpec{NodeName: "nodeC"},
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},
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},
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addedPod: &v1.Pod{
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ObjectMeta: metav1.ObjectMeta{Name: "addedPod", Labels: selector1},
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Spec: v1.PodSpec{NodeName: "nodeB"},
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},
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services: []*v1.Service{{Spec: v1.ServiceSpec{Selector: selector1}}},
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nodes: []*v1.Node{
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{ObjectMeta: metav1.ObjectMeta{Name: "nodeA", Labels: label1}},
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{ObjectMeta: metav1.ObjectMeta{Name: "nodeB", Labels: label2}},
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{ObjectMeta: metav1.ObjectMeta{Name: "nodeC", Labels: label3}},
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},
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},
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{
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name: "metadata anti-affinity terms and service affinity data are updated correctly after adding and removing a pod",
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pendingPod: &v1.Pod{
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ObjectMeta: metav1.ObjectMeta{Name: "pending", Labels: selector1},
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},
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existingPods: []*v1.Pod{
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{ObjectMeta: metav1.ObjectMeta{Name: "p1", Labels: selector1},
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Spec: v1.PodSpec{NodeName: "nodeA"},
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},
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{ObjectMeta: metav1.ObjectMeta{Name: "p2"},
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Spec: v1.PodSpec{
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NodeName: "nodeC",
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Affinity: &v1.Affinity{
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PodAntiAffinity: antiAffinityFooBar,
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},
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},
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},
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},
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addedPod: &v1.Pod{
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ObjectMeta: metav1.ObjectMeta{Name: "addedPod", Labels: selector1},
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Spec: v1.PodSpec{
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NodeName: "nodeA",
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Affinity: &v1.Affinity{
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PodAntiAffinity: antiAffinityComplex,
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},
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},
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},
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services: []*v1.Service{{Spec: v1.ServiceSpec{Selector: selector1}}},
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nodes: []*v1.Node{
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{ObjectMeta: metav1.ObjectMeta{Name: "nodeA", Labels: label1}},
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{ObjectMeta: metav1.ObjectMeta{Name: "nodeB", Labels: label2}},
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{ObjectMeta: metav1.ObjectMeta{Name: "nodeC", Labels: label3}},
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},
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},
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{
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name: "metadata matching pod affinity and anti-affinity are updated correctly after adding and removing a pod",
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pendingPod: &v1.Pod{
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ObjectMeta: metav1.ObjectMeta{Name: "pending", Labels: selector1},
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},
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existingPods: []*v1.Pod{
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{ObjectMeta: metav1.ObjectMeta{Name: "p1", Labels: selector1},
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Spec: v1.PodSpec{NodeName: "nodeA"},
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},
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{ObjectMeta: metav1.ObjectMeta{Name: "p2"},
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Spec: v1.PodSpec{
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NodeName: "nodeC",
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Affinity: &v1.Affinity{
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PodAntiAffinity: antiAffinityFooBar,
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PodAffinity: affinityComplex,
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},
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},
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},
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},
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addedPod: &v1.Pod{
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ObjectMeta: metav1.ObjectMeta{Name: "addedPod", Labels: selector1},
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Spec: v1.PodSpec{
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NodeName: "nodeA",
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Affinity: &v1.Affinity{
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PodAntiAffinity: antiAffinityComplex,
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},
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},
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},
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services: []*v1.Service{{Spec: v1.ServiceSpec{Selector: selector1}}},
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nodes: []*v1.Node{
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{ObjectMeta: metav1.ObjectMeta{Name: "nodeA", Labels: label1}},
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{ObjectMeta: metav1.ObjectMeta{Name: "nodeB", Labels: label2}},
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{ObjectMeta: metav1.ObjectMeta{Name: "nodeC", Labels: label3}},
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},
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},
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}
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for _, test := range tests {
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t.Run(test.name, func(t *testing.T) {
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allPodLister := fakelisters.PodLister(append(test.existingPods, test.addedPod))
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// getMeta creates predicate meta data given the list of pods.
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getMeta := func(pods []*v1.Pod) (*predicateMetadata, map[string]*schedulernodeinfo.NodeInfo) {
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s := nodeinfosnapshot.NewSnapshot(nodeinfosnapshot.CreateNodeInfoMap(pods, test.nodes))
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_, precompute := NewServiceAffinityPredicate(s.NodeInfos(), s.Pods(), fakelisters.ServiceLister(test.services), nil)
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RegisterPredicateMetadataProducer("ServiceAffinityMetaProducer", precompute)
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factory := &MetadataProducerFactory{}
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meta := factory.GetPredicateMetadata(test.pendingPod, s)
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return meta.(*predicateMetadata), s.NodeInfoMap
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}
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// allPodsMeta is meta data produced when all pods, including test.addedPod
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// are given to the metadata producer.
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allPodsMeta, _ := getMeta(allPodLister)
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// existingPodsMeta1 is meta data produced for test.existingPods (without test.addedPod).
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existingPodsMeta1, nodeInfoMap := getMeta(test.existingPods)
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// Add test.addedPod to existingPodsMeta1 and make sure meta is equal to allPodsMeta
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nodeInfo := nodeInfoMap[test.addedPod.Spec.NodeName]
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if err := existingPodsMeta1.AddPod(test.addedPod, nodeInfo.Node()); err != nil {
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t.Errorf("error adding pod to meta: %v", err)
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}
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if err := predicateMetadataEquivalent(allPodsMeta, existingPodsMeta1); err != nil {
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t.Errorf("meta data are not equivalent: %v", err)
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}
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// Remove the added pod and from existingPodsMeta1 an make sure it is equal
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// to meta generated for existing pods.
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existingPodsMeta2, _ := getMeta(fakelisters.PodLister(test.existingPods))
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if err := existingPodsMeta1.RemovePod(test.addedPod, nil); err != nil {
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t.Errorf("error removing pod from meta: %v", err)
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}
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if err := predicateMetadataEquivalent(existingPodsMeta1, existingPodsMeta2); err != nil {
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t.Errorf("meta data are not equivalent: %v", err)
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}
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})
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}
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}
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|
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// TestPredicateMetadata_ShallowCopy tests the ShallowCopy function. It is based
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// on the idea that shallow-copy should produce an object that is deep-equal to the original
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// object.
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func TestPredicateMetadata_ShallowCopy(t *testing.T) {
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selector1 := map[string]string{"foo": "bar"}
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source := predicateMetadata{
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pod: &v1.Pod{
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ObjectMeta: metav1.ObjectMeta{
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Name: "test",
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Namespace: "testns",
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},
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},
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podBestEffort: true,
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podFitsResourcesMetadata: &podFitsResourcesMetadata{
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podRequest: &schedulernodeinfo.Resource{
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MilliCPU: 1000,
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Memory: 300,
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AllowedPodNumber: 4,
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},
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},
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podFitsHostPortsMetadata: &podFitsHostPortsMetadata{
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podPorts: []*v1.ContainerPort{
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{
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Name: "name",
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HostPort: 10,
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ContainerPort: 20,
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Protocol: "TCP",
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HostIP: "1.2.3.4",
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},
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},
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},
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podAffinityMetadata: &podAffinityMetadata{
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topologyPairsAntiAffinityPodsMap: &topologyPairsMaps{
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topologyPairToPods: map[topologyPair]podSet{
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{key: "name", value: "machine1"}: {
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&v1.Pod{ObjectMeta: metav1.ObjectMeta{Name: "p2", Labels: selector1},
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Spec: v1.PodSpec{NodeName: "nodeC"},
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}: struct{}{},
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},
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{key: "name", value: "machine2"}: {
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&v1.Pod{ObjectMeta: metav1.ObjectMeta{Name: "p1", Labels: selector1},
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Spec: v1.PodSpec{NodeName: "nodeA"},
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}: struct{}{},
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},
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},
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podToTopologyPairs: map[string]topologyPairSet{
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"p2_": {
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topologyPair{key: "name", value: "machine1"}: struct{}{},
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},
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"p1_": {
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topologyPair{key: "name", value: "machine2"}: struct{}{},
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},
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},
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},
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topologyPairsPotentialAffinityPods: &topologyPairsMaps{
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topologyPairToPods: map[topologyPair]podSet{
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{key: "name", value: "nodeA"}: {
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&v1.Pod{ObjectMeta: metav1.ObjectMeta{Name: "p1", Labels: selector1},
|
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Spec: v1.PodSpec{NodeName: "nodeA"},
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}: struct{}{},
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},
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{key: "name", value: "nodeC"}: {
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&v1.Pod{ObjectMeta: metav1.ObjectMeta{Name: "p2"},
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Spec: v1.PodSpec{
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NodeName: "nodeC",
|
|
},
|
|
}: struct{}{},
|
|
&v1.Pod{ObjectMeta: metav1.ObjectMeta{Name: "p6", Labels: selector1},
|
|
Spec: v1.PodSpec{NodeName: "nodeC"},
|
|
}: struct{}{},
|
|
},
|
|
},
|
|
podToTopologyPairs: map[string]topologyPairSet{
|
|
"p1_": {
|
|
topologyPair{key: "name", value: "nodeA"}: struct{}{},
|
|
},
|
|
"p2_": {
|
|
topologyPair{key: "name", value: "nodeC"}: struct{}{},
|
|
},
|
|
"p6_": {
|
|
topologyPair{key: "name", value: "nodeC"}: struct{}{},
|
|
},
|
|
},
|
|
},
|
|
topologyPairsPotentialAntiAffinityPods: &topologyPairsMaps{
|
|
topologyPairToPods: map[topologyPair]podSet{
|
|
{key: "name", value: "nodeN"}: {
|
|
&v1.Pod{ObjectMeta: metav1.ObjectMeta{Name: "p1", Labels: selector1},
|
|
Spec: v1.PodSpec{NodeName: "nodeN"},
|
|
}: struct{}{},
|
|
&v1.Pod{ObjectMeta: metav1.ObjectMeta{Name: "p2"},
|
|
Spec: v1.PodSpec{
|
|
NodeName: "nodeM",
|
|
},
|
|
}: struct{}{},
|
|
&v1.Pod{ObjectMeta: metav1.ObjectMeta{Name: "p3"},
|
|
Spec: v1.PodSpec{
|
|
NodeName: "nodeM",
|
|
},
|
|
}: struct{}{},
|
|
},
|
|
{key: "name", value: "nodeM"}: {
|
|
&v1.Pod{ObjectMeta: metav1.ObjectMeta{Name: "p6", Labels: selector1},
|
|
Spec: v1.PodSpec{NodeName: "nodeM"},
|
|
}: struct{}{},
|
|
},
|
|
},
|
|
podToTopologyPairs: map[string]topologyPairSet{
|
|
"p1_": {
|
|
topologyPair{key: "name", value: "nodeN"}: struct{}{},
|
|
},
|
|
"p2_": {
|
|
topologyPair{key: "name", value: "nodeN"}: struct{}{},
|
|
},
|
|
"p3_": {
|
|
topologyPair{key: "name", value: "nodeN"}: struct{}{},
|
|
},
|
|
"p6_": {
|
|
topologyPair{key: "name", value: "nodeM"}: struct{}{},
|
|
},
|
|
},
|
|
},
|
|
},
|
|
evenPodsSpreadMetadata: &evenPodsSpreadMetadata{
|
|
tpKeyToCriticalPaths: map[string]*criticalPaths{
|
|
"name": {{"nodeA", 1}, {"nodeC", 2}},
|
|
},
|
|
tpPairToMatchNum: map[topologyPair]int32{
|
|
{key: "name", value: "nodeA"}: 1,
|
|
{key: "name", value: "nodeC"}: 2,
|
|
},
|
|
},
|
|
serviceAffinityMetadata: &serviceAffinityMetadata{
|
|
matchingPodList: []*v1.Pod{
|
|
{ObjectMeta: metav1.ObjectMeta{Name: "pod1"}},
|
|
{ObjectMeta: metav1.ObjectMeta{Name: "pod2"}},
|
|
},
|
|
matchingPodServices: []*v1.Service{
|
|
{ObjectMeta: metav1.ObjectMeta{Name: "service1"}},
|
|
},
|
|
},
|
|
}
|
|
|
|
if !reflect.DeepEqual(source.ShallowCopy().(*predicateMetadata), &source) {
|
|
t.Errorf("Copy is not equal to source!")
|
|
}
|
|
}
|
|
|
|
// TestGetTPMapMatchingIncomingAffinityAntiAffinity tests against method getTPMapMatchingIncomingAffinityAntiAffinity
|
|
// on Anti Affinity cases
|
|
func TestGetTPMapMatchingIncomingAffinityAntiAffinity(t *testing.T) {
|
|
newPodAffinityTerms := func(keys ...string) []v1.PodAffinityTerm {
|
|
var terms []v1.PodAffinityTerm
|
|
for _, key := range keys {
|
|
terms = append(terms, v1.PodAffinityTerm{
|
|
LabelSelector: &metav1.LabelSelector{
|
|
MatchExpressions: []metav1.LabelSelectorRequirement{
|
|
{
|
|
Key: key,
|
|
Operator: metav1.LabelSelectorOpExists,
|
|
},
|
|
},
|
|
},
|
|
TopologyKey: "hostname",
|
|
})
|
|
}
|
|
return terms
|
|
}
|
|
newPod := func(labels ...string) *v1.Pod {
|
|
labelMap := make(map[string]string)
|
|
for _, l := range labels {
|
|
labelMap[l] = ""
|
|
}
|
|
return &v1.Pod{
|
|
ObjectMeta: metav1.ObjectMeta{Name: "normal", Labels: labelMap},
|
|
Spec: v1.PodSpec{NodeName: "nodeA"},
|
|
}
|
|
}
|
|
normalPodA := newPod("aaa")
|
|
normalPodB := newPod("bbb")
|
|
normalPodAB := newPod("aaa", "bbb")
|
|
nodeA := &v1.Node{ObjectMeta: metav1.ObjectMeta{Name: "nodeA", Labels: map[string]string{"hostname": "nodeA"}}}
|
|
|
|
tests := []struct {
|
|
name string
|
|
existingPods []*v1.Pod
|
|
nodes []*v1.Node
|
|
pod *v1.Pod
|
|
wantAffinityPodsMaps *topologyPairsMaps
|
|
wantAntiAffinityPodsMaps *topologyPairsMaps
|
|
wantErr bool
|
|
}{
|
|
{
|
|
name: "nil test",
|
|
nodes: []*v1.Node{nodeA},
|
|
pod: &v1.Pod{
|
|
ObjectMeta: metav1.ObjectMeta{Name: "aaa-normal"},
|
|
},
|
|
wantAffinityPodsMaps: newTopologyPairsMaps(),
|
|
wantAntiAffinityPodsMaps: newTopologyPairsMaps(),
|
|
},
|
|
{
|
|
name: "incoming pod without affinity/anti-affinity causes a no-op",
|
|
existingPods: []*v1.Pod{normalPodA},
|
|
nodes: []*v1.Node{nodeA},
|
|
pod: &v1.Pod{
|
|
ObjectMeta: metav1.ObjectMeta{Name: "aaa-normal"},
|
|
},
|
|
wantAffinityPodsMaps: newTopologyPairsMaps(),
|
|
wantAntiAffinityPodsMaps: newTopologyPairsMaps(),
|
|
},
|
|
{
|
|
name: "no pod has label that violates incoming pod's affinity and anti-affinity",
|
|
existingPods: []*v1.Pod{normalPodB},
|
|
nodes: []*v1.Node{nodeA},
|
|
pod: &v1.Pod{
|
|
ObjectMeta: metav1.ObjectMeta{Name: "aaa-anti"},
|
|
Spec: v1.PodSpec{
|
|
Affinity: &v1.Affinity{
|
|
PodAffinity: &v1.PodAffinity{
|
|
RequiredDuringSchedulingIgnoredDuringExecution: newPodAffinityTerms("aaa"),
|
|
},
|
|
PodAntiAffinity: &v1.PodAntiAffinity{
|
|
RequiredDuringSchedulingIgnoredDuringExecution: newPodAffinityTerms("aaa"),
|
|
},
|
|
},
|
|
},
|
|
},
|
|
wantAffinityPodsMaps: newTopologyPairsMaps(),
|
|
wantAntiAffinityPodsMaps: newTopologyPairsMaps(),
|
|
},
|
|
{
|
|
name: "existing pod matches incoming pod's affinity and anti-affinity - single term case",
|
|
existingPods: []*v1.Pod{normalPodA},
|
|
nodes: []*v1.Node{nodeA},
|
|
pod: &v1.Pod{
|
|
ObjectMeta: metav1.ObjectMeta{Name: "affi-antiaffi"},
|
|
Spec: v1.PodSpec{
|
|
Affinity: &v1.Affinity{
|
|
PodAffinity: &v1.PodAffinity{
|
|
RequiredDuringSchedulingIgnoredDuringExecution: newPodAffinityTerms("aaa"),
|
|
},
|
|
PodAntiAffinity: &v1.PodAntiAffinity{
|
|
RequiredDuringSchedulingIgnoredDuringExecution: newPodAffinityTerms("aaa"),
|
|
},
|
|
},
|
|
},
|
|
},
|
|
wantAffinityPodsMaps: &topologyPairsMaps{
|
|
topologyPairToPods: map[topologyPair]podSet{
|
|
{key: "hostname", value: "nodeA"}: {normalPodA: struct{}{}},
|
|
},
|
|
podToTopologyPairs: map[string]topologyPairSet{
|
|
"normal_": {
|
|
topologyPair{key: "hostname", value: "nodeA"}: struct{}{},
|
|
},
|
|
},
|
|
},
|
|
wantAntiAffinityPodsMaps: &topologyPairsMaps{
|
|
topologyPairToPods: map[topologyPair]podSet{
|
|
{key: "hostname", value: "nodeA"}: {normalPodA: struct{}{}},
|
|
},
|
|
podToTopologyPairs: map[string]topologyPairSet{
|
|
"normal_": {
|
|
topologyPair{key: "hostname", value: "nodeA"}: struct{}{},
|
|
},
|
|
},
|
|
},
|
|
},
|
|
{
|
|
name: "existing pod matches incoming pod's affinity and anti-affinity - mutiple terms case",
|
|
existingPods: []*v1.Pod{normalPodAB},
|
|
nodes: []*v1.Node{nodeA},
|
|
pod: &v1.Pod{
|
|
ObjectMeta: metav1.ObjectMeta{Name: "affi-antiaffi"},
|
|
Spec: v1.PodSpec{
|
|
Affinity: &v1.Affinity{
|
|
PodAffinity: &v1.PodAffinity{
|
|
RequiredDuringSchedulingIgnoredDuringExecution: newPodAffinityTerms("aaa", "bbb"),
|
|
},
|
|
PodAntiAffinity: &v1.PodAntiAffinity{
|
|
RequiredDuringSchedulingIgnoredDuringExecution: newPodAffinityTerms("aaa"),
|
|
},
|
|
},
|
|
},
|
|
},
|
|
wantAffinityPodsMaps: &topologyPairsMaps{
|
|
topologyPairToPods: map[topologyPair]podSet{
|
|
{key: "hostname", value: "nodeA"}: {normalPodAB: struct{}{}},
|
|
},
|
|
podToTopologyPairs: map[string]topologyPairSet{
|
|
"normal_": {
|
|
topologyPair{key: "hostname", value: "nodeA"}: struct{}{},
|
|
},
|
|
},
|
|
},
|
|
wantAntiAffinityPodsMaps: &topologyPairsMaps{
|
|
topologyPairToPods: map[topologyPair]podSet{
|
|
{key: "hostname", value: "nodeA"}: {normalPodAB: struct{}{}},
|
|
},
|
|
podToTopologyPairs: map[string]topologyPairSet{
|
|
"normal_": {
|
|
topologyPair{key: "hostname", value: "nodeA"}: struct{}{},
|
|
},
|
|
},
|
|
},
|
|
},
|
|
{
|
|
name: "existing pod not match incoming pod's affinity but matches anti-affinity",
|
|
existingPods: []*v1.Pod{normalPodA},
|
|
nodes: []*v1.Node{nodeA},
|
|
pod: &v1.Pod{
|
|
ObjectMeta: metav1.ObjectMeta{Name: "affi-antiaffi"},
|
|
Spec: v1.PodSpec{
|
|
Affinity: &v1.Affinity{
|
|
PodAffinity: &v1.PodAffinity{
|
|
RequiredDuringSchedulingIgnoredDuringExecution: newPodAffinityTerms("aaa", "bbb"),
|
|
},
|
|
PodAntiAffinity: &v1.PodAntiAffinity{
|
|
RequiredDuringSchedulingIgnoredDuringExecution: newPodAffinityTerms("aaa", "bbb"),
|
|
},
|
|
},
|
|
},
|
|
},
|
|
wantAffinityPodsMaps: newTopologyPairsMaps(),
|
|
wantAntiAffinityPodsMaps: &topologyPairsMaps{
|
|
topologyPairToPods: map[topologyPair]podSet{
|
|
{key: "hostname", value: "nodeA"}: {normalPodA: struct{}{}},
|
|
},
|
|
podToTopologyPairs: map[string]topologyPairSet{
|
|
"normal_": {
|
|
topologyPair{key: "hostname", value: "nodeA"}: struct{}{},
|
|
},
|
|
},
|
|
},
|
|
},
|
|
{
|
|
name: "incoming pod's anti-affinity has more than one term - existing pod violates partial term - case 1",
|
|
existingPods: []*v1.Pod{normalPodAB},
|
|
nodes: []*v1.Node{nodeA},
|
|
pod: &v1.Pod{
|
|
ObjectMeta: metav1.ObjectMeta{Name: "anaffi-antiaffiti"},
|
|
Spec: v1.PodSpec{
|
|
Affinity: &v1.Affinity{
|
|
PodAffinity: &v1.PodAffinity{
|
|
RequiredDuringSchedulingIgnoredDuringExecution: newPodAffinityTerms("aaa", "ccc"),
|
|
},
|
|
PodAntiAffinity: &v1.PodAntiAffinity{
|
|
RequiredDuringSchedulingIgnoredDuringExecution: newPodAffinityTerms("aaa", "ccc"),
|
|
},
|
|
},
|
|
},
|
|
},
|
|
wantAffinityPodsMaps: newTopologyPairsMaps(),
|
|
wantAntiAffinityPodsMaps: &topologyPairsMaps{
|
|
topologyPairToPods: map[topologyPair]podSet{
|
|
{key: "hostname", value: "nodeA"}: {normalPodAB: struct{}{}},
|
|
},
|
|
podToTopologyPairs: map[string]topologyPairSet{
|
|
"normal_": {
|
|
topologyPair{key: "hostname", value: "nodeA"}: struct{}{},
|
|
},
|
|
},
|
|
},
|
|
},
|
|
{
|
|
name: "incoming pod's anti-affinity has more than one term - existing pod violates partial term - case 2",
|
|
existingPods: []*v1.Pod{normalPodB},
|
|
nodes: []*v1.Node{nodeA},
|
|
pod: &v1.Pod{
|
|
ObjectMeta: metav1.ObjectMeta{Name: "affi-antiaffi"},
|
|
Spec: v1.PodSpec{
|
|
Affinity: &v1.Affinity{
|
|
PodAffinity: &v1.PodAffinity{
|
|
RequiredDuringSchedulingIgnoredDuringExecution: newPodAffinityTerms("aaa", "bbb"),
|
|
},
|
|
PodAntiAffinity: &v1.PodAntiAffinity{
|
|
RequiredDuringSchedulingIgnoredDuringExecution: newPodAffinityTerms("aaa", "bbb"),
|
|
},
|
|
},
|
|
},
|
|
},
|
|
wantAffinityPodsMaps: newTopologyPairsMaps(),
|
|
wantAntiAffinityPodsMaps: &topologyPairsMaps{
|
|
topologyPairToPods: map[topologyPair]podSet{
|
|
{key: "hostname", value: "nodeA"}: {normalPodB: struct{}{}},
|
|
},
|
|
podToTopologyPairs: map[string]topologyPairSet{
|
|
"normal_": {
|
|
topologyPair{key: "hostname", value: "nodeA"}: struct{}{},
|
|
},
|
|
},
|
|
},
|
|
},
|
|
}
|
|
for _, tt := range tests {
|
|
t.Run(tt.name, func(t *testing.T) {
|
|
s := nodeinfosnapshot.NewSnapshot(nodeinfosnapshot.CreateNodeInfoMap(tt.existingPods, tt.nodes))
|
|
l, _ := s.NodeInfos().List()
|
|
gotAffinityPodsMaps, gotAntiAffinityPodsMaps, err := getTPMapMatchingIncomingAffinityAntiAffinity(tt.pod, l)
|
|
if (err != nil) != tt.wantErr {
|
|
t.Errorf("getTPMapMatchingIncomingAffinityAntiAffinity() error = %v, wantErr %v", err, tt.wantErr)
|
|
return
|
|
}
|
|
if !reflect.DeepEqual(gotAffinityPodsMaps, tt.wantAffinityPodsMaps) {
|
|
t.Errorf("getTPMapMatchingIncomingAffinityAntiAffinity() gotAffinityPodsMaps = %#v, want %#v", gotAffinityPodsMaps, tt.wantAffinityPodsMaps)
|
|
}
|
|
if !reflect.DeepEqual(gotAntiAffinityPodsMaps, tt.wantAntiAffinityPodsMaps) {
|
|
t.Errorf("getTPMapMatchingIncomingAffinityAntiAffinity() gotAntiAffinityPodsMaps = %#v, want %#v", gotAntiAffinityPodsMaps, tt.wantAntiAffinityPodsMaps)
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
func TestGetTPMapMatchingSpreadConstraints(t *testing.T) {
|
|
fooSelector := st.MakeLabelSelector().Exists("foo").Obj()
|
|
barSelector := st.MakeLabelSelector().Exists("bar").Obj()
|
|
tests := []struct {
|
|
name string
|
|
pod *v1.Pod
|
|
nodes []*v1.Node
|
|
existingPods []*v1.Pod
|
|
want *evenPodsSpreadMetadata
|
|
}{
|
|
{
|
|
name: "clean cluster with one spreadConstraint",
|
|
pod: st.MakePod().Name("p").Label("foo", "").SpreadConstraint(
|
|
5, "zone", hardSpread, st.MakeLabelSelector().Label("foo", "bar").Obj(),
|
|
).Obj(),
|
|
nodes: []*v1.Node{
|
|
st.MakeNode().Name("node-a").Label("zone", "zone1").Label("node", "node-a").Obj(),
|
|
st.MakeNode().Name("node-b").Label("zone", "zone1").Label("node", "node-b").Obj(),
|
|
st.MakeNode().Name("node-x").Label("zone", "zone2").Label("node", "node-x").Obj(),
|
|
st.MakeNode().Name("node-y").Label("zone", "zone2").Label("node", "node-y").Obj(),
|
|
},
|
|
want: &evenPodsSpreadMetadata{
|
|
constraints: []topologySpreadConstraint{
|
|
{
|
|
maxSkew: 5,
|
|
topologyKey: "zone",
|
|
selector: mustConvertLabelSelectorAsSelector(t, st.MakeLabelSelector().Label("foo", "bar").Obj()),
|
|
},
|
|
},
|
|
tpKeyToCriticalPaths: map[string]*criticalPaths{
|
|
"zone": {{"zone1", 0}, {"zone2", 0}},
|
|
},
|
|
tpPairToMatchNum: map[topologyPair]int32{
|
|
{key: "zone", value: "zone1"}: 0,
|
|
{key: "zone", value: "zone2"}: 0,
|
|
},
|
|
},
|
|
},
|
|
{
|
|
name: "normal case with one spreadConstraint",
|
|
pod: st.MakePod().Name("p").Label("foo", "").SpreadConstraint(
|
|
1, "zone", hardSpread, fooSelector,
|
|
).Obj(),
|
|
nodes: []*v1.Node{
|
|
st.MakeNode().Name("node-a").Label("zone", "zone1").Label("node", "node-a").Obj(),
|
|
st.MakeNode().Name("node-b").Label("zone", "zone1").Label("node", "node-b").Obj(),
|
|
st.MakeNode().Name("node-x").Label("zone", "zone2").Label("node", "node-x").Obj(),
|
|
st.MakeNode().Name("node-y").Label("zone", "zone2").Label("node", "node-y").Obj(),
|
|
},
|
|
existingPods: []*v1.Pod{
|
|
st.MakePod().Name("p-a1").Node("node-a").Label("foo", "").Obj(),
|
|
st.MakePod().Name("p-a2").Node("node-a").Label("foo", "").Obj(),
|
|
st.MakePod().Name("p-b1").Node("node-b").Label("foo", "").Obj(),
|
|
st.MakePod().Name("p-y1").Node("node-y").Label("foo", "").Obj(),
|
|
st.MakePod().Name("p-y2").Node("node-y").Label("foo", "").Obj(),
|
|
},
|
|
want: &evenPodsSpreadMetadata{
|
|
constraints: []topologySpreadConstraint{
|
|
{
|
|
maxSkew: 1,
|
|
topologyKey: "zone",
|
|
selector: mustConvertLabelSelectorAsSelector(t, fooSelector),
|
|
},
|
|
},
|
|
tpKeyToCriticalPaths: map[string]*criticalPaths{
|
|
"zone": {{"zone2", 2}, {"zone1", 3}},
|
|
},
|
|
tpPairToMatchNum: map[topologyPair]int32{
|
|
{key: "zone", value: "zone1"}: 3,
|
|
{key: "zone", value: "zone2"}: 2,
|
|
},
|
|
},
|
|
},
|
|
{
|
|
name: "normal case with one spreadConstraint, on a 3-zone cluster",
|
|
pod: st.MakePod().Name("p").Label("foo", "").SpreadConstraint(
|
|
1, "zone", hardSpread, st.MakeLabelSelector().Exists("foo").Obj(),
|
|
).Obj(),
|
|
nodes: []*v1.Node{
|
|
st.MakeNode().Name("node-a").Label("zone", "zone1").Label("node", "node-a").Obj(),
|
|
st.MakeNode().Name("node-b").Label("zone", "zone1").Label("node", "node-b").Obj(),
|
|
st.MakeNode().Name("node-x").Label("zone", "zone2").Label("node", "node-x").Obj(),
|
|
st.MakeNode().Name("node-y").Label("zone", "zone2").Label("node", "node-y").Obj(),
|
|
st.MakeNode().Name("node-o").Label("zone", "zone3").Label("node", "node-o").Obj(),
|
|
st.MakeNode().Name("node-p").Label("zone", "zone3").Label("node", "node-p").Obj(),
|
|
},
|
|
existingPods: []*v1.Pod{
|
|
st.MakePod().Name("p-a1").Node("node-a").Label("foo", "").Obj(),
|
|
st.MakePod().Name("p-a2").Node("node-a").Label("foo", "").Obj(),
|
|
st.MakePod().Name("p-b1").Node("node-b").Label("foo", "").Obj(),
|
|
st.MakePod().Name("p-y1").Node("node-y").Label("foo", "").Obj(),
|
|
st.MakePod().Name("p-y2").Node("node-y").Label("foo", "").Obj(),
|
|
},
|
|
want: &evenPodsSpreadMetadata{
|
|
constraints: []topologySpreadConstraint{
|
|
{
|
|
maxSkew: 1,
|
|
topologyKey: "zone",
|
|
selector: mustConvertLabelSelectorAsSelector(t, fooSelector),
|
|
},
|
|
},
|
|
tpKeyToCriticalPaths: map[string]*criticalPaths{
|
|
"zone": {{"zone3", 0}, {"zone2", 2}},
|
|
},
|
|
tpPairToMatchNum: map[topologyPair]int32{
|
|
{key: "zone", value: "zone1"}: 3,
|
|
{key: "zone", value: "zone2"}: 2,
|
|
{key: "zone", value: "zone3"}: 0,
|
|
},
|
|
},
|
|
},
|
|
{
|
|
name: "namespace mismatch doesn't count",
|
|
pod: st.MakePod().Name("p").Label("foo", "").SpreadConstraint(
|
|
1, "zone", hardSpread, fooSelector,
|
|
).Obj(),
|
|
nodes: []*v1.Node{
|
|
st.MakeNode().Name("node-a").Label("zone", "zone1").Label("node", "node-a").Obj(),
|
|
st.MakeNode().Name("node-b").Label("zone", "zone1").Label("node", "node-b").Obj(),
|
|
st.MakeNode().Name("node-x").Label("zone", "zone2").Label("node", "node-x").Obj(),
|
|
st.MakeNode().Name("node-y").Label("zone", "zone2").Label("node", "node-y").Obj(),
|
|
},
|
|
existingPods: []*v1.Pod{
|
|
st.MakePod().Name("p-a1").Node("node-a").Label("foo", "").Obj(),
|
|
st.MakePod().Name("p-a2").Namespace("ns1").Node("node-a").Label("foo", "").Obj(),
|
|
st.MakePod().Name("p-b1").Node("node-b").Label("foo", "").Obj(),
|
|
st.MakePod().Name("p-y1").Namespace("ns2").Node("node-y").Label("foo", "").Obj(),
|
|
st.MakePod().Name("p-y2").Node("node-y").Label("foo", "").Obj(),
|
|
},
|
|
want: &evenPodsSpreadMetadata{
|
|
constraints: []topologySpreadConstraint{
|
|
{
|
|
maxSkew: 1,
|
|
topologyKey: "zone",
|
|
selector: mustConvertLabelSelectorAsSelector(t, fooSelector),
|
|
},
|
|
},
|
|
tpKeyToCriticalPaths: map[string]*criticalPaths{
|
|
"zone": {{"zone2", 1}, {"zone1", 2}},
|
|
},
|
|
tpPairToMatchNum: map[topologyPair]int32{
|
|
{key: "zone", value: "zone1"}: 2,
|
|
{key: "zone", value: "zone2"}: 1,
|
|
},
|
|
},
|
|
},
|
|
{
|
|
name: "normal case with two spreadConstraints",
|
|
pod: st.MakePod().Name("p").Label("foo", "").
|
|
SpreadConstraint(1, "zone", hardSpread, fooSelector).
|
|
SpreadConstraint(1, "node", hardSpread, fooSelector).
|
|
Obj(),
|
|
nodes: []*v1.Node{
|
|
st.MakeNode().Name("node-a").Label("zone", "zone1").Label("node", "node-a").Obj(),
|
|
st.MakeNode().Name("node-b").Label("zone", "zone1").Label("node", "node-b").Obj(),
|
|
st.MakeNode().Name("node-x").Label("zone", "zone2").Label("node", "node-x").Obj(),
|
|
st.MakeNode().Name("node-y").Label("zone", "zone2").Label("node", "node-y").Obj(),
|
|
},
|
|
existingPods: []*v1.Pod{
|
|
st.MakePod().Name("p-a1").Node("node-a").Label("foo", "").Obj(),
|
|
st.MakePod().Name("p-a2").Node("node-a").Label("foo", "").Obj(),
|
|
st.MakePod().Name("p-b1").Node("node-b").Label("foo", "").Obj(),
|
|
st.MakePod().Name("p-y1").Node("node-y").Label("foo", "").Obj(),
|
|
st.MakePod().Name("p-y2").Node("node-y").Label("foo", "").Obj(),
|
|
st.MakePod().Name("p-y3").Node("node-y").Label("foo", "").Obj(),
|
|
st.MakePod().Name("p-y4").Node("node-y").Label("foo", "").Obj(),
|
|
},
|
|
want: &evenPodsSpreadMetadata{
|
|
constraints: []topologySpreadConstraint{
|
|
{
|
|
maxSkew: 1,
|
|
topologyKey: "zone",
|
|
selector: mustConvertLabelSelectorAsSelector(t, fooSelector),
|
|
},
|
|
{
|
|
maxSkew: 1,
|
|
topologyKey: "node",
|
|
selector: mustConvertLabelSelectorAsSelector(t, fooSelector),
|
|
},
|
|
},
|
|
tpKeyToCriticalPaths: map[string]*criticalPaths{
|
|
"zone": {{"zone1", 3}, {"zone2", 4}},
|
|
"node": {{"node-x", 0}, {"node-b", 1}},
|
|
},
|
|
tpPairToMatchNum: map[topologyPair]int32{
|
|
{key: "zone", value: "zone1"}: 3,
|
|
{key: "zone", value: "zone2"}: 4,
|
|
{key: "node", value: "node-a"}: 2,
|
|
{key: "node", value: "node-b"}: 1,
|
|
{key: "node", value: "node-x"}: 0,
|
|
{key: "node", value: "node-y"}: 4,
|
|
},
|
|
},
|
|
},
|
|
{
|
|
name: "soft spreadConstraints should be bypassed",
|
|
pod: st.MakePod().Name("p").Label("foo", "").
|
|
SpreadConstraint(1, "zone", softSpread, fooSelector).
|
|
SpreadConstraint(1, "zone", hardSpread, fooSelector).
|
|
SpreadConstraint(1, "node", softSpread, fooSelector).
|
|
SpreadConstraint(1, "node", hardSpread, fooSelector).
|
|
Obj(),
|
|
nodes: []*v1.Node{
|
|
st.MakeNode().Name("node-a").Label("zone", "zone1").Label("node", "node-a").Obj(),
|
|
st.MakeNode().Name("node-b").Label("zone", "zone1").Label("node", "node-b").Obj(),
|
|
st.MakeNode().Name("node-y").Label("zone", "zone2").Label("node", "node-y").Obj(),
|
|
},
|
|
existingPods: []*v1.Pod{
|
|
st.MakePod().Name("p-a1").Node("node-a").Label("foo", "").Obj(),
|
|
st.MakePod().Name("p-a2").Node("node-a").Label("foo", "").Obj(),
|
|
st.MakePod().Name("p-b1").Node("node-b").Label("foo", "").Obj(),
|
|
st.MakePod().Name("p-y1").Node("node-y").Label("foo", "").Obj(),
|
|
st.MakePod().Name("p-y2").Node("node-y").Label("foo", "").Obj(),
|
|
st.MakePod().Name("p-y3").Node("node-y").Label("foo", "").Obj(),
|
|
st.MakePod().Name("p-y4").Node("node-y").Label("foo", "").Obj(),
|
|
},
|
|
want: &evenPodsSpreadMetadata{
|
|
constraints: []topologySpreadConstraint{
|
|
{
|
|
maxSkew: 1,
|
|
topologyKey: "zone",
|
|
selector: mustConvertLabelSelectorAsSelector(t, fooSelector),
|
|
},
|
|
{
|
|
maxSkew: 1,
|
|
topologyKey: "node",
|
|
selector: mustConvertLabelSelectorAsSelector(t, fooSelector),
|
|
},
|
|
},
|
|
tpKeyToCriticalPaths: map[string]*criticalPaths{
|
|
"zone": {{"zone1", 3}, {"zone2", 4}},
|
|
"node": {{"node-b", 1}, {"node-a", 2}},
|
|
},
|
|
tpPairToMatchNum: map[topologyPair]int32{
|
|
{key: "zone", value: "zone1"}: 3,
|
|
{key: "zone", value: "zone2"}: 4,
|
|
{key: "node", value: "node-a"}: 2,
|
|
{key: "node", value: "node-b"}: 1,
|
|
{key: "node", value: "node-y"}: 4,
|
|
},
|
|
},
|
|
},
|
|
{
|
|
name: "different labelSelectors - simple version",
|
|
pod: st.MakePod().Name("p").Label("foo", "").Label("bar", "").
|
|
SpreadConstraint(1, "zone", hardSpread, fooSelector).
|
|
SpreadConstraint(1, "node", hardSpread, barSelector).
|
|
Obj(),
|
|
nodes: []*v1.Node{
|
|
st.MakeNode().Name("node-a").Label("zone", "zone1").Label("node", "node-a").Obj(),
|
|
st.MakeNode().Name("node-b").Label("zone", "zone1").Label("node", "node-b").Obj(),
|
|
st.MakeNode().Name("node-y").Label("zone", "zone2").Label("node", "node-y").Obj(),
|
|
},
|
|
existingPods: []*v1.Pod{
|
|
st.MakePod().Name("p-a").Node("node-a").Label("foo", "").Obj(),
|
|
st.MakePod().Name("p-b").Node("node-b").Label("bar", "").Obj(),
|
|
},
|
|
want: &evenPodsSpreadMetadata{
|
|
constraints: []topologySpreadConstraint{
|
|
{
|
|
maxSkew: 1,
|
|
topologyKey: "zone",
|
|
selector: mustConvertLabelSelectorAsSelector(t, fooSelector),
|
|
},
|
|
{
|
|
maxSkew: 1,
|
|
topologyKey: "node",
|
|
selector: mustConvertLabelSelectorAsSelector(t, barSelector),
|
|
},
|
|
},
|
|
tpKeyToCriticalPaths: map[string]*criticalPaths{
|
|
"zone": {{"zone2", 0}, {"zone1", 1}},
|
|
"node": {{"node-a", 0}, {"node-y", 0}},
|
|
},
|
|
tpPairToMatchNum: map[topologyPair]int32{
|
|
{key: "zone", value: "zone1"}: 1,
|
|
{key: "zone", value: "zone2"}: 0,
|
|
{key: "node", value: "node-a"}: 0,
|
|
{key: "node", value: "node-b"}: 1,
|
|
{key: "node", value: "node-y"}: 0,
|
|
},
|
|
},
|
|
},
|
|
{
|
|
name: "different labelSelectors - complex pods",
|
|
pod: st.MakePod().Name("p").Label("foo", "").Label("bar", "").
|
|
SpreadConstraint(1, "zone", hardSpread, fooSelector).
|
|
SpreadConstraint(1, "node", hardSpread, barSelector).
|
|
Obj(),
|
|
nodes: []*v1.Node{
|
|
st.MakeNode().Name("node-a").Label("zone", "zone1").Label("node", "node-a").Obj(),
|
|
st.MakeNode().Name("node-b").Label("zone", "zone1").Label("node", "node-b").Obj(),
|
|
st.MakeNode().Name("node-y").Label("zone", "zone2").Label("node", "node-y").Obj(),
|
|
},
|
|
existingPods: []*v1.Pod{
|
|
st.MakePod().Name("p-a1").Node("node-a").Label("foo", "").Obj(),
|
|
st.MakePod().Name("p-a2").Node("node-a").Label("foo", "").Label("bar", "").Obj(),
|
|
st.MakePod().Name("p-b1").Node("node-b").Label("foo", "").Obj(),
|
|
st.MakePod().Name("p-y1").Node("node-y").Label("foo", "").Obj(),
|
|
st.MakePod().Name("p-y2").Node("node-y").Label("foo", "").Label("bar", "").Obj(),
|
|
st.MakePod().Name("p-y3").Node("node-y").Label("foo", "").Obj(),
|
|
st.MakePod().Name("p-y4").Node("node-y").Label("foo", "").Label("bar", "").Obj(),
|
|
},
|
|
want: &evenPodsSpreadMetadata{
|
|
constraints: []topologySpreadConstraint{
|
|
{
|
|
maxSkew: 1,
|
|
topologyKey: "zone",
|
|
selector: mustConvertLabelSelectorAsSelector(t, fooSelector),
|
|
},
|
|
{
|
|
maxSkew: 1,
|
|
topologyKey: "node",
|
|
selector: mustConvertLabelSelectorAsSelector(t, barSelector),
|
|
},
|
|
},
|
|
tpKeyToCriticalPaths: map[string]*criticalPaths{
|
|
"zone": {{"zone1", 3}, {"zone2", 4}},
|
|
"node": {{"node-b", 0}, {"node-a", 1}},
|
|
},
|
|
tpPairToMatchNum: map[topologyPair]int32{
|
|
{key: "zone", value: "zone1"}: 3,
|
|
{key: "zone", value: "zone2"}: 4,
|
|
{key: "node", value: "node-a"}: 1,
|
|
{key: "node", value: "node-b"}: 0,
|
|
{key: "node", value: "node-y"}: 2,
|
|
},
|
|
},
|
|
},
|
|
{
|
|
name: "two spreadConstraints, and with podAffinity",
|
|
pod: st.MakePod().Name("p").Label("foo", "").
|
|
NodeAffinityNotIn("node", []string{"node-x"}). // exclude node-x
|
|
SpreadConstraint(1, "zone", hardSpread, fooSelector).
|
|
SpreadConstraint(1, "node", hardSpread, fooSelector).
|
|
Obj(),
|
|
nodes: []*v1.Node{
|
|
st.MakeNode().Name("node-a").Label("zone", "zone1").Label("node", "node-a").Obj(),
|
|
st.MakeNode().Name("node-b").Label("zone", "zone1").Label("node", "node-b").Obj(),
|
|
st.MakeNode().Name("node-x").Label("zone", "zone2").Label("node", "node-x").Obj(),
|
|
st.MakeNode().Name("node-y").Label("zone", "zone2").Label("node", "node-y").Obj(),
|
|
},
|
|
existingPods: []*v1.Pod{
|
|
st.MakePod().Name("p-a1").Node("node-a").Label("foo", "").Obj(),
|
|
st.MakePod().Name("p-a2").Node("node-a").Label("foo", "").Obj(),
|
|
st.MakePod().Name("p-b1").Node("node-b").Label("foo", "").Obj(),
|
|
st.MakePod().Name("p-y1").Node("node-y").Label("foo", "").Obj(),
|
|
st.MakePod().Name("p-y2").Node("node-y").Label("foo", "").Obj(),
|
|
st.MakePod().Name("p-y3").Node("node-y").Label("foo", "").Obj(),
|
|
st.MakePod().Name("p-y4").Node("node-y").Label("foo", "").Obj(),
|
|
},
|
|
want: &evenPodsSpreadMetadata{
|
|
constraints: []topologySpreadConstraint{
|
|
{
|
|
maxSkew: 1,
|
|
topologyKey: "zone",
|
|
selector: mustConvertLabelSelectorAsSelector(t, fooSelector),
|
|
},
|
|
{
|
|
maxSkew: 1,
|
|
topologyKey: "node",
|
|
selector: mustConvertLabelSelectorAsSelector(t, fooSelector),
|
|
},
|
|
},
|
|
tpKeyToCriticalPaths: map[string]*criticalPaths{
|
|
"zone": {{"zone1", 3}, {"zone2", 4}},
|
|
"node": {{"node-b", 1}, {"node-a", 2}},
|
|
},
|
|
tpPairToMatchNum: map[topologyPair]int32{
|
|
{key: "zone", value: "zone1"}: 3,
|
|
{key: "zone", value: "zone2"}: 4,
|
|
{key: "node", value: "node-a"}: 2,
|
|
{key: "node", value: "node-b"}: 1,
|
|
{key: "node", value: "node-y"}: 4,
|
|
},
|
|
},
|
|
},
|
|
}
|
|
for _, tt := range tests {
|
|
t.Run(tt.name, func(t *testing.T) {
|
|
s := nodeinfosnapshot.NewSnapshot(nodeinfosnapshot.CreateNodeInfoMap(tt.existingPods, tt.nodes))
|
|
l, _ := s.NodeInfos().List()
|
|
got, _ := getEvenPodsSpreadMetadata(tt.pod, l)
|
|
got.sortCriticalPaths()
|
|
if !reflect.DeepEqual(got, tt.want) {
|
|
t.Errorf("getEvenPodsSpreadMetadata() = %#v, want %#v", *got, *tt.want)
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
func TestPodSpreadCache_addPod(t *testing.T) {
|
|
nodeConstraint := topologySpreadConstraint{
|
|
maxSkew: 1,
|
|
topologyKey: "node",
|
|
selector: mustConvertLabelSelectorAsSelector(t, st.MakeLabelSelector().Exists("foo").Obj()),
|
|
}
|
|
zoneConstraint := nodeConstraint
|
|
zoneConstraint.topologyKey = "zone"
|
|
tests := []struct {
|
|
name string
|
|
preemptor *v1.Pod
|
|
addedPod *v1.Pod
|
|
existingPods []*v1.Pod
|
|
nodeIdx int // denotes which node 'addedPod' belongs to
|
|
nodes []*v1.Node
|
|
want *evenPodsSpreadMetadata
|
|
}{
|
|
{
|
|
name: "node a and b both impact current min match",
|
|
preemptor: st.MakePod().Name("p").Label("foo", "").
|
|
SpreadConstraint(1, "node", hardSpread, st.MakeLabelSelector().Exists("foo").Obj()).
|
|
Obj(),
|
|
addedPod: st.MakePod().Name("p-a1").Node("node-a").Label("foo", "").Obj(),
|
|
existingPods: nil, // it's an empty cluster
|
|
nodeIdx: 0,
|
|
nodes: []*v1.Node{
|
|
st.MakeNode().Name("node-a").Label("zone", "zone1").Label("node", "node-a").Obj(),
|
|
st.MakeNode().Name("node-b").Label("zone", "zone1").Label("node", "node-b").Obj(),
|
|
},
|
|
want: &evenPodsSpreadMetadata{
|
|
constraints: []topologySpreadConstraint{nodeConstraint},
|
|
tpKeyToCriticalPaths: map[string]*criticalPaths{
|
|
"node": {{"node-b", 0}, {"node-a", 1}},
|
|
},
|
|
tpPairToMatchNum: map[topologyPair]int32{
|
|
{key: "node", value: "node-a"}: 1,
|
|
{key: "node", value: "node-b"}: 0,
|
|
},
|
|
},
|
|
},
|
|
{
|
|
name: "only node a impacts current min match",
|
|
preemptor: st.MakePod().Name("p").Label("foo", "").
|
|
SpreadConstraint(1, "node", hardSpread, st.MakeLabelSelector().Exists("foo").Obj()).
|
|
Obj(),
|
|
addedPod: st.MakePod().Name("p-a1").Node("node-a").Label("foo", "").Obj(),
|
|
existingPods: []*v1.Pod{
|
|
st.MakePod().Name("p-b1").Node("node-b").Label("foo", "").Obj(),
|
|
},
|
|
nodeIdx: 0,
|
|
nodes: []*v1.Node{
|
|
st.MakeNode().Name("node-a").Label("zone", "zone1").Label("node", "node-a").Obj(),
|
|
st.MakeNode().Name("node-b").Label("zone", "zone1").Label("node", "node-b").Obj(),
|
|
},
|
|
want: &evenPodsSpreadMetadata{
|
|
constraints: []topologySpreadConstraint{nodeConstraint},
|
|
tpKeyToCriticalPaths: map[string]*criticalPaths{
|
|
"node": {{"node-a", 1}, {"node-b", 1}},
|
|
},
|
|
tpPairToMatchNum: map[topologyPair]int32{
|
|
{key: "node", value: "node-a"}: 1,
|
|
{key: "node", value: "node-b"}: 1,
|
|
},
|
|
},
|
|
},
|
|
{
|
|
name: "add a pod with mis-matched namespace doesn't change topologyKeyToMinPodsMap",
|
|
preemptor: st.MakePod().Name("p").Label("foo", "").
|
|
SpreadConstraint(1, "node", hardSpread, st.MakeLabelSelector().Exists("foo").Obj()).
|
|
Obj(),
|
|
addedPod: st.MakePod().Name("p-a1").Namespace("ns1").Node("node-a").Label("foo", "").Obj(),
|
|
existingPods: []*v1.Pod{
|
|
st.MakePod().Name("p-b1").Node("node-b").Label("foo", "").Obj(),
|
|
},
|
|
nodeIdx: 0,
|
|
nodes: []*v1.Node{
|
|
st.MakeNode().Name("node-a").Label("zone", "zone1").Label("node", "node-a").Obj(),
|
|
st.MakeNode().Name("node-b").Label("zone", "zone1").Label("node", "node-b").Obj(),
|
|
},
|
|
want: &evenPodsSpreadMetadata{
|
|
constraints: []topologySpreadConstraint{nodeConstraint},
|
|
tpKeyToCriticalPaths: map[string]*criticalPaths{
|
|
"node": {{"node-a", 0}, {"node-b", 1}},
|
|
},
|
|
tpPairToMatchNum: map[topologyPair]int32{
|
|
{key: "node", value: "node-a"}: 0,
|
|
{key: "node", value: "node-b"}: 1,
|
|
},
|
|
},
|
|
},
|
|
{
|
|
name: "add pod on non-critical node won't trigger re-calculation",
|
|
preemptor: st.MakePod().Name("p").Label("foo", "").
|
|
SpreadConstraint(1, "node", hardSpread, st.MakeLabelSelector().Exists("foo").Obj()).
|
|
Obj(),
|
|
addedPod: st.MakePod().Name("p-b2").Node("node-b").Label("foo", "").Obj(),
|
|
existingPods: []*v1.Pod{
|
|
st.MakePod().Name("p-b1").Node("node-b").Label("foo", "").Obj(),
|
|
},
|
|
nodeIdx: 1,
|
|
nodes: []*v1.Node{
|
|
st.MakeNode().Name("node-a").Label("zone", "zone1").Label("node", "node-a").Obj(),
|
|
st.MakeNode().Name("node-b").Label("zone", "zone1").Label("node", "node-b").Obj(),
|
|
},
|
|
want: &evenPodsSpreadMetadata{
|
|
constraints: []topologySpreadConstraint{nodeConstraint},
|
|
tpKeyToCriticalPaths: map[string]*criticalPaths{
|
|
"node": {{"node-a", 0}, {"node-b", 2}},
|
|
},
|
|
tpPairToMatchNum: map[topologyPair]int32{
|
|
{key: "node", value: "node-a"}: 0,
|
|
{key: "node", value: "node-b"}: 2,
|
|
},
|
|
},
|
|
},
|
|
{
|
|
name: "node a and x both impact topologyKeyToMinPodsMap on zone and node",
|
|
preemptor: st.MakePod().Name("p").Label("foo", "").
|
|
SpreadConstraint(1, "zone", hardSpread, st.MakeLabelSelector().Exists("foo").Obj()).
|
|
SpreadConstraint(1, "node", hardSpread, st.MakeLabelSelector().Exists("foo").Obj()).
|
|
Obj(),
|
|
addedPod: st.MakePod().Name("p-a1").Node("node-a").Label("foo", "").Obj(),
|
|
existingPods: nil, // it's an empty cluster
|
|
nodeIdx: 0,
|
|
nodes: []*v1.Node{
|
|
st.MakeNode().Name("node-a").Label("zone", "zone1").Label("node", "node-a").Obj(),
|
|
st.MakeNode().Name("node-x").Label("zone", "zone2").Label("node", "node-x").Obj(),
|
|
},
|
|
want: &evenPodsSpreadMetadata{
|
|
constraints: []topologySpreadConstraint{zoneConstraint, nodeConstraint},
|
|
tpKeyToCriticalPaths: map[string]*criticalPaths{
|
|
"zone": {{"zone2", 0}, {"zone1", 1}},
|
|
"node": {{"node-x", 0}, {"node-a", 1}},
|
|
},
|
|
tpPairToMatchNum: map[topologyPair]int32{
|
|
{key: "zone", value: "zone1"}: 1,
|
|
{key: "zone", value: "zone2"}: 0,
|
|
{key: "node", value: "node-a"}: 1,
|
|
{key: "node", value: "node-x"}: 0,
|
|
},
|
|
},
|
|
},
|
|
{
|
|
name: "only node a impacts topologyKeyToMinPodsMap on zone and node",
|
|
preemptor: st.MakePod().Name("p").Label("foo", "").
|
|
SpreadConstraint(1, "zone", hardSpread, st.MakeLabelSelector().Exists("foo").Obj()).
|
|
SpreadConstraint(1, "node", hardSpread, st.MakeLabelSelector().Exists("foo").Obj()).
|
|
Obj(),
|
|
addedPod: st.MakePod().Name("p-a1").Node("node-a").Label("foo", "").Obj(),
|
|
existingPods: []*v1.Pod{
|
|
st.MakePod().Name("p-x1").Node("node-x").Label("foo", "").Obj(),
|
|
},
|
|
nodeIdx: 0,
|
|
nodes: []*v1.Node{
|
|
st.MakeNode().Name("node-a").Label("zone", "zone1").Label("node", "node-a").Obj(),
|
|
st.MakeNode().Name("node-x").Label("zone", "zone2").Label("node", "node-x").Obj(),
|
|
},
|
|
want: &evenPodsSpreadMetadata{
|
|
constraints: []topologySpreadConstraint{zoneConstraint, nodeConstraint},
|
|
tpKeyToCriticalPaths: map[string]*criticalPaths{
|
|
"zone": {{"zone1", 1}, {"zone2", 1}},
|
|
"node": {{"node-a", 1}, {"node-x", 1}},
|
|
},
|
|
tpPairToMatchNum: map[topologyPair]int32{
|
|
{key: "zone", value: "zone1"}: 1,
|
|
{key: "zone", value: "zone2"}: 1,
|
|
{key: "node", value: "node-a"}: 1,
|
|
{key: "node", value: "node-x"}: 1,
|
|
},
|
|
},
|
|
},
|
|
{
|
|
name: "node a impacts topologyKeyToMinPodsMap on node, node x impacts topologyKeyToMinPodsMap on zone",
|
|
preemptor: st.MakePod().Name("p").Label("foo", "").
|
|
SpreadConstraint(1, "zone", hardSpread, st.MakeLabelSelector().Exists("foo").Obj()).
|
|
SpreadConstraint(1, "node", hardSpread, st.MakeLabelSelector().Exists("foo").Obj()).
|
|
Obj(),
|
|
addedPod: st.MakePod().Name("p-a1").Node("node-a").Label("foo", "").Obj(),
|
|
existingPods: []*v1.Pod{
|
|
st.MakePod().Name("p-b1").Node("node-b").Label("foo", "").Obj(),
|
|
st.MakePod().Name("p-b2").Node("node-b").Label("foo", "").Obj(),
|
|
st.MakePod().Name("p-x1").Node("node-x").Label("foo", "").Obj(),
|
|
},
|
|
nodeIdx: 0,
|
|
nodes: []*v1.Node{
|
|
st.MakeNode().Name("node-a").Label("zone", "zone1").Label("node", "node-a").Obj(),
|
|
st.MakeNode().Name("node-b").Label("zone", "zone1").Label("node", "node-b").Obj(),
|
|
st.MakeNode().Name("node-x").Label("zone", "zone2").Label("node", "node-x").Obj(),
|
|
},
|
|
want: &evenPodsSpreadMetadata{
|
|
constraints: []topologySpreadConstraint{zoneConstraint, nodeConstraint},
|
|
tpKeyToCriticalPaths: map[string]*criticalPaths{
|
|
"zone": {{"zone2", 1}, {"zone1", 3}},
|
|
"node": {{"node-a", 1}, {"node-x", 1}},
|
|
},
|
|
tpPairToMatchNum: map[topologyPair]int32{
|
|
{key: "zone", value: "zone1"}: 3,
|
|
{key: "zone", value: "zone2"}: 1,
|
|
{key: "node", value: "node-a"}: 1,
|
|
{key: "node", value: "node-b"}: 2,
|
|
{key: "node", value: "node-x"}: 1,
|
|
},
|
|
},
|
|
},
|
|
{
|
|
name: "constraints hold different labelSelectors, node a impacts topologyKeyToMinPodsMap on zone",
|
|
preemptor: st.MakePod().Name("p").Label("foo", "").Label("bar", "").
|
|
SpreadConstraint(1, "zone", hardSpread, st.MakeLabelSelector().Exists("foo").Obj()).
|
|
SpreadConstraint(1, "node", hardSpread, st.MakeLabelSelector().Exists("bar").Obj()).
|
|
Obj(),
|
|
addedPod: st.MakePod().Name("p-a1").Node("node-a").Label("foo", "").Obj(),
|
|
existingPods: []*v1.Pod{
|
|
st.MakePod().Name("p-b1").Node("node-b").Label("foo", "").Label("bar", "").Obj(),
|
|
st.MakePod().Name("p-x1").Node("node-x").Label("foo", "").Label("bar", "").Obj(),
|
|
st.MakePod().Name("p-x2").Node("node-x").Label("bar", "").Obj(),
|
|
},
|
|
nodeIdx: 0,
|
|
nodes: []*v1.Node{
|
|
st.MakeNode().Name("node-a").Label("zone", "zone1").Label("node", "node-a").Obj(),
|
|
st.MakeNode().Name("node-b").Label("zone", "zone1").Label("node", "node-b").Obj(),
|
|
st.MakeNode().Name("node-x").Label("zone", "zone2").Label("node", "node-x").Obj(),
|
|
},
|
|
want: &evenPodsSpreadMetadata{
|
|
constraints: []topologySpreadConstraint{
|
|
zoneConstraint,
|
|
{
|
|
maxSkew: 1,
|
|
topologyKey: "node",
|
|
selector: mustConvertLabelSelectorAsSelector(t, st.MakeLabelSelector().Exists("bar").Obj()),
|
|
},
|
|
},
|
|
tpKeyToCriticalPaths: map[string]*criticalPaths{
|
|
"zone": {{"zone2", 1}, {"zone1", 2}},
|
|
"node": {{"node-a", 0}, {"node-b", 1}},
|
|
},
|
|
tpPairToMatchNum: map[topologyPair]int32{
|
|
{key: "zone", value: "zone1"}: 2,
|
|
{key: "zone", value: "zone2"}: 1,
|
|
{key: "node", value: "node-a"}: 0,
|
|
{key: "node", value: "node-b"}: 1,
|
|
{key: "node", value: "node-x"}: 2,
|
|
},
|
|
},
|
|
},
|
|
{
|
|
name: "constraints hold different labelSelectors, node a impacts topologyKeyToMinPodsMap on both zone and node",
|
|
preemptor: st.MakePod().Name("p").Label("foo", "").Label("bar", "").
|
|
SpreadConstraint(1, "zone", hardSpread, st.MakeLabelSelector().Exists("foo").Obj()).
|
|
SpreadConstraint(1, "node", hardSpread, st.MakeLabelSelector().Exists("bar").Obj()).
|
|
Obj(),
|
|
addedPod: st.MakePod().Name("p-a1").Node("node-a").Label("foo", "").Label("bar", "").Obj(),
|
|
existingPods: []*v1.Pod{
|
|
st.MakePod().Name("p-b1").Node("node-b").Label("bar", "").Obj(),
|
|
st.MakePod().Name("p-x1").Node("node-x").Label("foo", "").Label("bar", "").Obj(),
|
|
st.MakePod().Name("p-x2").Node("node-x").Label("bar", "").Obj(),
|
|
},
|
|
nodeIdx: 0,
|
|
nodes: []*v1.Node{
|
|
st.MakeNode().Name("node-a").Label("zone", "zone1").Label("node", "node-a").Obj(),
|
|
st.MakeNode().Name("node-b").Label("zone", "zone1").Label("node", "node-b").Obj(),
|
|
st.MakeNode().Name("node-x").Label("zone", "zone2").Label("node", "node-x").Obj(),
|
|
},
|
|
want: &evenPodsSpreadMetadata{
|
|
constraints: []topologySpreadConstraint{
|
|
zoneConstraint,
|
|
{
|
|
maxSkew: 1,
|
|
topologyKey: "node",
|
|
selector: mustConvertLabelSelectorAsSelector(t, st.MakeLabelSelector().Exists("bar").Obj()),
|
|
},
|
|
},
|
|
tpKeyToCriticalPaths: map[string]*criticalPaths{
|
|
"zone": {{"zone1", 1}, {"zone2", 1}},
|
|
"node": {{"node-a", 1}, {"node-b", 1}},
|
|
},
|
|
tpPairToMatchNum: map[topologyPair]int32{
|
|
{key: "zone", value: "zone1"}: 1,
|
|
{key: "zone", value: "zone2"}: 1,
|
|
{key: "node", value: "node-a"}: 1,
|
|
{key: "node", value: "node-b"}: 1,
|
|
{key: "node", value: "node-x"}: 2,
|
|
},
|
|
},
|
|
},
|
|
}
|
|
for _, tt := range tests {
|
|
t.Run(tt.name, func(t *testing.T) {
|
|
s := nodeinfosnapshot.NewSnapshot(nodeinfosnapshot.CreateNodeInfoMap(tt.existingPods, tt.nodes))
|
|
l, _ := s.NodeInfos().List()
|
|
evenPodsSpreadMetadata, _ := getEvenPodsSpreadMetadata(tt.preemptor, l)
|
|
evenPodsSpreadMetadata.addPod(tt.addedPod, tt.preemptor, tt.nodes[tt.nodeIdx])
|
|
evenPodsSpreadMetadata.sortCriticalPaths()
|
|
if !reflect.DeepEqual(evenPodsSpreadMetadata, tt.want) {
|
|
t.Errorf("evenPodsSpreadMetadata#addPod() = %v, want %v", evenPodsSpreadMetadata, tt.want)
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
func TestPodSpreadCache_removePod(t *testing.T) {
|
|
nodeConstraint := topologySpreadConstraint{
|
|
maxSkew: 1,
|
|
topologyKey: "node",
|
|
selector: mustConvertLabelSelectorAsSelector(t, st.MakeLabelSelector().Exists("foo").Obj()),
|
|
}
|
|
zoneConstraint := nodeConstraint
|
|
zoneConstraint.topologyKey = "zone"
|
|
tests := []struct {
|
|
name string
|
|
preemptor *v1.Pod // preemptor pod
|
|
nodes []*v1.Node
|
|
existingPods []*v1.Pod
|
|
deletedPodIdx int // need to reuse *Pod of existingPods[i]
|
|
deletedPod *v1.Pod // this field is used only when deletedPodIdx is -1
|
|
nodeIdx int // denotes which node "deletedPod" belongs to
|
|
want *evenPodsSpreadMetadata
|
|
}{
|
|
{
|
|
// A high priority pod may not be scheduled due to node taints or resource shortage.
|
|
// So preemption is triggered.
|
|
name: "one spreadConstraint on zone, topologyKeyToMinPodsMap unchanged",
|
|
preemptor: st.MakePod().Name("p").Label("foo", "").
|
|
SpreadConstraint(1, "zone", hardSpread, st.MakeLabelSelector().Exists("foo").Obj()).
|
|
Obj(),
|
|
nodes: []*v1.Node{
|
|
st.MakeNode().Name("node-a").Label("zone", "zone1").Label("node", "node-a").Obj(),
|
|
st.MakeNode().Name("node-b").Label("zone", "zone1").Label("node", "node-b").Obj(),
|
|
st.MakeNode().Name("node-x").Label("zone", "zone2").Label("node", "node-x").Obj(),
|
|
},
|
|
existingPods: []*v1.Pod{
|
|
st.MakePod().Name("p-a1").Node("node-a").Label("foo", "").Obj(),
|
|
st.MakePod().Name("p-b1").Node("node-b").Label("foo", "").Obj(),
|
|
st.MakePod().Name("p-x1").Node("node-x").Label("foo", "").Obj(),
|
|
},
|
|
deletedPodIdx: 0, // remove pod "p-a1"
|
|
nodeIdx: 0, // node-a
|
|
want: &evenPodsSpreadMetadata{
|
|
constraints: []topologySpreadConstraint{zoneConstraint},
|
|
tpKeyToCriticalPaths: map[string]*criticalPaths{
|
|
"zone": {{"zone1", 1}, {"zone2", 1}},
|
|
},
|
|
tpPairToMatchNum: map[topologyPair]int32{
|
|
{key: "zone", value: "zone1"}: 1,
|
|
{key: "zone", value: "zone2"}: 1,
|
|
},
|
|
},
|
|
},
|
|
{
|
|
name: "one spreadConstraint on node, topologyKeyToMinPodsMap changed",
|
|
preemptor: st.MakePod().Name("p").Label("foo", "").
|
|
SpreadConstraint(1, "zone", hardSpread, st.MakeLabelSelector().Exists("foo").Obj()).
|
|
Obj(),
|
|
nodes: []*v1.Node{
|
|
st.MakeNode().Name("node-a").Label("zone", "zone1").Label("node", "node-a").Obj(),
|
|
st.MakeNode().Name("node-b").Label("zone", "zone1").Label("node", "node-b").Obj(),
|
|
st.MakeNode().Name("node-x").Label("zone", "zone2").Label("node", "node-x").Obj(),
|
|
st.MakeNode().Name("node-y").Label("zone", "zone2").Label("node", "node-y").Obj(),
|
|
},
|
|
existingPods: []*v1.Pod{
|
|
st.MakePod().Name("p-a1").Node("node-a").Label("foo", "").Obj(),
|
|
st.MakePod().Name("p-b1").Node("node-b").Label("foo", "").Obj(),
|
|
st.MakePod().Name("p-x1").Node("node-x").Label("foo", "").Obj(),
|
|
st.MakePod().Name("p-y1").Node("node-y").Label("foo", "").Obj(),
|
|
},
|
|
deletedPodIdx: 0, // remove pod "p-a1"
|
|
nodeIdx: 0, // node-a
|
|
want: &evenPodsSpreadMetadata{
|
|
constraints: []topologySpreadConstraint{zoneConstraint},
|
|
tpKeyToCriticalPaths: map[string]*criticalPaths{
|
|
"zone": {{"zone1", 1}, {"zone2", 2}},
|
|
},
|
|
tpPairToMatchNum: map[topologyPair]int32{
|
|
{key: "zone", value: "zone1"}: 1,
|
|
{key: "zone", value: "zone2"}: 2,
|
|
},
|
|
},
|
|
},
|
|
{
|
|
name: "delete an irrelevant pod won't help",
|
|
preemptor: st.MakePod().Name("p").Label("foo", "").
|
|
SpreadConstraint(1, "zone", hardSpread, st.MakeLabelSelector().Exists("foo").Obj()).
|
|
Obj(),
|
|
nodes: []*v1.Node{
|
|
st.MakeNode().Name("node-a").Label("zone", "zone1").Label("node", "node-a").Obj(),
|
|
st.MakeNode().Name("node-b").Label("zone", "zone1").Label("node", "node-b").Obj(),
|
|
st.MakeNode().Name("node-x").Label("zone", "zone2").Label("node", "node-x").Obj(),
|
|
st.MakeNode().Name("node-y").Label("zone", "zone2").Label("node", "node-y").Obj(),
|
|
},
|
|
existingPods: []*v1.Pod{
|
|
st.MakePod().Name("p-a0").Node("node-a").Label("bar", "").Obj(),
|
|
st.MakePod().Name("p-a1").Node("node-a").Label("foo", "").Obj(),
|
|
st.MakePod().Name("p-b1").Node("node-b").Label("foo", "").Obj(),
|
|
st.MakePod().Name("p-x1").Node("node-x").Label("foo", "").Obj(),
|
|
st.MakePod().Name("p-y1").Node("node-y").Label("foo", "").Obj(),
|
|
},
|
|
deletedPodIdx: 0, // remove pod "p-a0"
|
|
nodeIdx: 0, // node-a
|
|
want: &evenPodsSpreadMetadata{
|
|
constraints: []topologySpreadConstraint{zoneConstraint},
|
|
tpKeyToCriticalPaths: map[string]*criticalPaths{
|
|
"zone": {{"zone1", 2}, {"zone2", 2}},
|
|
},
|
|
tpPairToMatchNum: map[topologyPair]int32{
|
|
{key: "zone", value: "zone1"}: 2,
|
|
{key: "zone", value: "zone2"}: 2,
|
|
},
|
|
},
|
|
},
|
|
{
|
|
name: "delete a non-existing pod won't help",
|
|
preemptor: st.MakePod().Name("p").Label("foo", "").
|
|
SpreadConstraint(1, "zone", hardSpread, st.MakeLabelSelector().Exists("foo").Obj()).
|
|
Obj(),
|
|
nodes: []*v1.Node{
|
|
st.MakeNode().Name("node-a").Label("zone", "zone1").Label("node", "node-a").Obj(),
|
|
st.MakeNode().Name("node-b").Label("zone", "zone1").Label("node", "node-b").Obj(),
|
|
st.MakeNode().Name("node-x").Label("zone", "zone2").Label("node", "node-x").Obj(),
|
|
st.MakeNode().Name("node-y").Label("zone", "zone2").Label("node", "node-y").Obj(),
|
|
},
|
|
existingPods: []*v1.Pod{
|
|
st.MakePod().Name("p-a1").Node("node-a").Label("foo", "").Obj(),
|
|
st.MakePod().Name("p-b1").Node("node-b").Label("foo", "").Obj(),
|
|
st.MakePod().Name("p-x1").Node("node-x").Label("foo", "").Obj(),
|
|
st.MakePod().Name("p-y1").Node("node-y").Label("foo", "").Obj(),
|
|
},
|
|
deletedPodIdx: -1,
|
|
deletedPod: st.MakePod().Name("p-a0").Node("node-a").Label("bar", "").Obj(),
|
|
nodeIdx: 0, // node-a
|
|
want: &evenPodsSpreadMetadata{
|
|
constraints: []topologySpreadConstraint{zoneConstraint},
|
|
tpKeyToCriticalPaths: map[string]*criticalPaths{
|
|
"zone": {{"zone1", 2}, {"zone2", 2}},
|
|
},
|
|
tpPairToMatchNum: map[topologyPair]int32{
|
|
{key: "zone", value: "zone1"}: 2,
|
|
{key: "zone", value: "zone2"}: 2,
|
|
},
|
|
},
|
|
},
|
|
{
|
|
name: "two spreadConstraints",
|
|
preemptor: st.MakePod().Name("p").Label("foo", "").
|
|
SpreadConstraint(1, "zone", hardSpread, st.MakeLabelSelector().Exists("foo").Obj()).
|
|
SpreadConstraint(1, "node", hardSpread, st.MakeLabelSelector().Exists("foo").Obj()).
|
|
Obj(),
|
|
nodes: []*v1.Node{
|
|
st.MakeNode().Name("node-a").Label("zone", "zone1").Label("node", "node-a").Obj(),
|
|
st.MakeNode().Name("node-b").Label("zone", "zone1").Label("node", "node-b").Obj(),
|
|
st.MakeNode().Name("node-x").Label("zone", "zone2").Label("node", "node-x").Obj(),
|
|
},
|
|
existingPods: []*v1.Pod{
|
|
st.MakePod().Name("p-a1").Node("node-a").Label("foo", "").Obj(),
|
|
st.MakePod().Name("p-a2").Node("node-a").Label("foo", "").Obj(),
|
|
st.MakePod().Name("p-b1").Node("node-b").Label("foo", "").Obj(),
|
|
st.MakePod().Name("p-x1").Node("node-x").Label("foo", "").Obj(),
|
|
st.MakePod().Name("p-x2").Node("node-x").Label("foo", "").Obj(),
|
|
},
|
|
deletedPodIdx: 3, // remove pod "p-x1"
|
|
nodeIdx: 2, // node-x
|
|
want: &evenPodsSpreadMetadata{
|
|
constraints: []topologySpreadConstraint{zoneConstraint, nodeConstraint},
|
|
tpKeyToCriticalPaths: map[string]*criticalPaths{
|
|
"zone": {{"zone2", 1}, {"zone1", 3}},
|
|
"node": {{"node-b", 1}, {"node-x", 1}},
|
|
},
|
|
tpPairToMatchNum: map[topologyPair]int32{
|
|
{key: "zone", value: "zone1"}: 3,
|
|
{key: "zone", value: "zone2"}: 1,
|
|
{key: "node", value: "node-a"}: 2,
|
|
{key: "node", value: "node-b"}: 1,
|
|
{key: "node", value: "node-x"}: 1,
|
|
},
|
|
},
|
|
},
|
|
}
|
|
for _, tt := range tests {
|
|
t.Run(tt.name, func(t *testing.T) {
|
|
s := nodeinfosnapshot.NewSnapshot(nodeinfosnapshot.CreateNodeInfoMap(tt.existingPods, tt.nodes))
|
|
l, _ := s.NodeInfos().List()
|
|
evenPodsSpreadMetadata, _ := getEvenPodsSpreadMetadata(tt.preemptor, l)
|
|
|
|
var deletedPod *v1.Pod
|
|
if tt.deletedPodIdx < len(tt.existingPods) && tt.deletedPodIdx >= 0 {
|
|
deletedPod = tt.existingPods[tt.deletedPodIdx]
|
|
} else {
|
|
deletedPod = tt.deletedPod
|
|
}
|
|
evenPodsSpreadMetadata.removePod(deletedPod, tt.preemptor, tt.nodes[tt.nodeIdx])
|
|
evenPodsSpreadMetadata.sortCriticalPaths()
|
|
if !reflect.DeepEqual(evenPodsSpreadMetadata, tt.want) {
|
|
t.Errorf("evenPodsSpreadMetadata#removePod() = %v, want %v", evenPodsSpreadMetadata, tt.want)
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
func BenchmarkTestGetTPMapMatchingSpreadConstraints(b *testing.B) {
|
|
tests := []struct {
|
|
name string
|
|
pod *v1.Pod
|
|
existingPodsNum int
|
|
allNodesNum int
|
|
filteredNodesNum int
|
|
}{
|
|
{
|
|
name: "1000nodes/single-constraint-zone",
|
|
pod: st.MakePod().Name("p").Label("foo", "").
|
|
SpreadConstraint(1, v1.LabelZoneFailureDomain, hardSpread, st.MakeLabelSelector().Exists("foo").Obj()).
|
|
Obj(),
|
|
existingPodsNum: 10000,
|
|
allNodesNum: 1000,
|
|
filteredNodesNum: 500,
|
|
},
|
|
{
|
|
name: "1000nodes/single-constraint-node",
|
|
pod: st.MakePod().Name("p").Label("foo", "").
|
|
SpreadConstraint(1, v1.LabelHostname, hardSpread, st.MakeLabelSelector().Exists("foo").Obj()).
|
|
Obj(),
|
|
existingPodsNum: 10000,
|
|
allNodesNum: 1000,
|
|
filteredNodesNum: 500,
|
|
},
|
|
{
|
|
name: "1000nodes/two-constraints-zone-node",
|
|
pod: st.MakePod().Name("p").Label("foo", "").Label("bar", "").
|
|
SpreadConstraint(1, v1.LabelZoneFailureDomain, hardSpread, st.MakeLabelSelector().Exists("foo").Obj()).
|
|
SpreadConstraint(1, v1.LabelHostname, hardSpread, st.MakeLabelSelector().Exists("bar").Obj()).
|
|
Obj(),
|
|
existingPodsNum: 10000,
|
|
allNodesNum: 1000,
|
|
filteredNodesNum: 500,
|
|
},
|
|
}
|
|
for _, tt := range tests {
|
|
b.Run(tt.name, func(b *testing.B) {
|
|
existingPods, allNodes, _ := st.MakeNodesAndPodsForEvenPodsSpread(tt.pod.Labels, tt.existingPodsNum, tt.allNodesNum, tt.filteredNodesNum)
|
|
s := nodeinfosnapshot.NewSnapshot(nodeinfosnapshot.CreateNodeInfoMap(existingPods, allNodes))
|
|
l, _ := s.NodeInfos().List()
|
|
b.ResetTimer()
|
|
for i := 0; i < b.N; i++ {
|
|
getEvenPodsSpreadMetadata(tt.pod, l)
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
var (
|
|
hardSpread = v1.DoNotSchedule
|
|
softSpread = v1.ScheduleAnyway
|
|
)
|
|
|
|
// sortCriticalPaths is only served for testing purpose.
|
|
func (m *evenPodsSpreadMetadata) sortCriticalPaths() {
|
|
for _, paths := range m.tpKeyToCriticalPaths {
|
|
// If two paths both hold minimum matching number, and topologyValue is unordered.
|
|
if paths[0].matchNum == paths[1].matchNum && paths[0].topologyValue > paths[1].topologyValue {
|
|
// Swap topologyValue to make them sorted alphabetically.
|
|
paths[0].topologyValue, paths[1].topologyValue = paths[1].topologyValue, paths[0].topologyValue
|
|
}
|
|
}
|
|
}
|
|
|
|
func mustConvertLabelSelectorAsSelector(t *testing.T, ls *metav1.LabelSelector) labels.Selector {
|
|
t.Helper()
|
|
s, err := metav1.LabelSelectorAsSelector(ls)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
return s
|
|
}
|