453 lines
18 KiB
Go
453 lines
18 KiB
Go
/*
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Copyright 2019 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 serviceaffinity
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import (
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"context"
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"reflect"
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"sort"
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"testing"
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apps "k8s.io/api/apps/v1"
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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/kubernetes/pkg/scheduler/algorithm/predicates"
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"k8s.io/kubernetes/pkg/scheduler/algorithm/priorities"
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"k8s.io/kubernetes/pkg/scheduler/framework/plugins/migration"
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framework "k8s.io/kubernetes/pkg/scheduler/framework/v1alpha1"
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fakelisters "k8s.io/kubernetes/pkg/scheduler/listers/fake"
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nodeinfosnapshot "k8s.io/kubernetes/pkg/scheduler/nodeinfo/snapshot"
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)
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func TestServiceAffinity(t *testing.T) {
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selector := map[string]string{"foo": "bar"}
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labels1 := map[string]string{
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"region": "r1",
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"zone": "z11",
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}
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labels2 := map[string]string{
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"region": "r1",
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"zone": "z12",
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}
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labels3 := map[string]string{
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"region": "r2",
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"zone": "z21",
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}
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labels4 := map[string]string{
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"region": "r2",
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"zone": "z22",
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}
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node1 := v1.Node{ObjectMeta: metav1.ObjectMeta{Name: "machine1", Labels: labels1}}
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node2 := v1.Node{ObjectMeta: metav1.ObjectMeta{Name: "machine2", Labels: labels2}}
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node3 := v1.Node{ObjectMeta: metav1.ObjectMeta{Name: "machine3", Labels: labels3}}
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node4 := v1.Node{ObjectMeta: metav1.ObjectMeta{Name: "machine4", Labels: labels4}}
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node5 := v1.Node{ObjectMeta: metav1.ObjectMeta{Name: "machine5", Labels: labels4}}
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tests := []struct {
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name string
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pod *v1.Pod
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pods []*v1.Pod
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services []*v1.Service
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node *v1.Node
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labels []string
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res framework.Code
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}{
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{
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name: "nothing scheduled",
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pod: new(v1.Pod),
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node: &node1,
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labels: []string{"region"},
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res: framework.Success,
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},
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{
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name: "pod with region label match",
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pod: &v1.Pod{Spec: v1.PodSpec{NodeSelector: map[string]string{"region": "r1"}}},
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node: &node1,
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labels: []string{"region"},
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res: framework.Success,
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},
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{
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name: "pod with region label mismatch",
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pod: &v1.Pod{Spec: v1.PodSpec{NodeSelector: map[string]string{"region": "r2"}}},
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node: &node1,
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labels: []string{"region"},
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res: framework.Unschedulable,
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},
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{
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name: "service pod on same node",
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pod: &v1.Pod{ObjectMeta: metav1.ObjectMeta{Labels: selector}},
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pods: []*v1.Pod{{Spec: v1.PodSpec{NodeName: "machine1"}, ObjectMeta: metav1.ObjectMeta{Labels: selector}}},
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node: &node1,
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services: []*v1.Service{{Spec: v1.ServiceSpec{Selector: selector}}},
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labels: []string{"region"},
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res: framework.Success,
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},
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{
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name: "service pod on different node, region match",
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pod: &v1.Pod{ObjectMeta: metav1.ObjectMeta{Labels: selector}},
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pods: []*v1.Pod{{Spec: v1.PodSpec{NodeName: "machine2"}, ObjectMeta: metav1.ObjectMeta{Labels: selector}}},
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node: &node1,
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services: []*v1.Service{{Spec: v1.ServiceSpec{Selector: selector}}},
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labels: []string{"region"},
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res: framework.Success,
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},
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{
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name: "service pod on different node, region mismatch",
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pod: &v1.Pod{ObjectMeta: metav1.ObjectMeta{Labels: selector}},
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pods: []*v1.Pod{{Spec: v1.PodSpec{NodeName: "machine3"}, ObjectMeta: metav1.ObjectMeta{Labels: selector}}},
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node: &node1,
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services: []*v1.Service{{Spec: v1.ServiceSpec{Selector: selector}}},
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labels: []string{"region"},
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res: framework.Unschedulable,
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},
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{
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name: "service in different namespace, region mismatch",
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pod: &v1.Pod{ObjectMeta: metav1.ObjectMeta{Labels: selector, Namespace: "ns1"}},
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pods: []*v1.Pod{{Spec: v1.PodSpec{NodeName: "machine3"}, ObjectMeta: metav1.ObjectMeta{Labels: selector, Namespace: "ns1"}}},
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node: &node1,
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services: []*v1.Service{{Spec: v1.ServiceSpec{Selector: selector}, ObjectMeta: metav1.ObjectMeta{Namespace: "ns2"}}},
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labels: []string{"region"},
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res: framework.Success,
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},
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{
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name: "pod in different namespace, region mismatch",
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pod: &v1.Pod{ObjectMeta: metav1.ObjectMeta{Labels: selector, Namespace: "ns1"}},
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pods: []*v1.Pod{{Spec: v1.PodSpec{NodeName: "machine3"}, ObjectMeta: metav1.ObjectMeta{Labels: selector, Namespace: "ns2"}}},
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node: &node1,
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services: []*v1.Service{{Spec: v1.ServiceSpec{Selector: selector}, ObjectMeta: metav1.ObjectMeta{Namespace: "ns1"}}},
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labels: []string{"region"},
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res: framework.Success,
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},
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{
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name: "service and pod in same namespace, region mismatch",
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pod: &v1.Pod{ObjectMeta: metav1.ObjectMeta{Labels: selector, Namespace: "ns1"}},
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pods: []*v1.Pod{{Spec: v1.PodSpec{NodeName: "machine3"}, ObjectMeta: metav1.ObjectMeta{Labels: selector, Namespace: "ns1"}}},
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node: &node1,
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services: []*v1.Service{{Spec: v1.ServiceSpec{Selector: selector}, ObjectMeta: metav1.ObjectMeta{Namespace: "ns1"}}},
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labels: []string{"region"},
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res: framework.Unschedulable,
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},
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{
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name: "service pod on different node, multiple labels, not all match",
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pod: &v1.Pod{ObjectMeta: metav1.ObjectMeta{Labels: selector}},
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pods: []*v1.Pod{{Spec: v1.PodSpec{NodeName: "machine2"}, ObjectMeta: metav1.ObjectMeta{Labels: selector}}},
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node: &node1,
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services: []*v1.Service{{Spec: v1.ServiceSpec{Selector: selector}}},
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labels: []string{"region", "zone"},
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res: framework.Unschedulable,
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},
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{
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name: "service pod on different node, multiple labels, all match",
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pod: &v1.Pod{ObjectMeta: metav1.ObjectMeta{Labels: selector}},
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pods: []*v1.Pod{{Spec: v1.PodSpec{NodeName: "machine5"}, ObjectMeta: metav1.ObjectMeta{Labels: selector}}},
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node: &node4,
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services: []*v1.Service{{Spec: v1.ServiceSpec{Selector: selector}}},
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labels: []string{"region", "zone"},
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res: framework.Success,
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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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nodes := []*v1.Node{&node1, &node2, &node3, &node4, &node5}
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snapshot := nodeinfosnapshot.NewSnapshot(nodeinfosnapshot.CreateNodeInfoMap(test.pods, nodes))
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predicate, precompute := predicates.NewServiceAffinityPredicate(snapshot.NodeInfos(), snapshot.Pods(), fakelisters.ServiceLister(test.services), test.labels)
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predicates.RegisterPredicateMetadataProducer("ServiceAffinityMetaProducer", precompute)
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p := &ServiceAffinity{
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predicate: predicate,
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}
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factory := &predicates.MetadataProducerFactory{}
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meta := factory.GetPredicateMetadata(test.pod, snapshot)
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state := framework.NewCycleState()
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state.Write(migration.PredicatesStateKey, &migration.PredicatesStateData{Reference: meta})
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status := p.Filter(context.Background(), state, test.pod, snapshot.NodeInfoMap[test.node.Name])
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if status.Code() != test.res {
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t.Errorf("Status mismatch. got: %v, want: %v", status.Code(), test.res)
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}
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})
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}
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}
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func TestServiceAffinityScore(t *testing.T) {
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labels1 := map[string]string{
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"foo": "bar",
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"baz": "blah",
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}
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labels2 := map[string]string{
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"bar": "foo",
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"baz": "blah",
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}
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zone1 := map[string]string{
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"zone": "zone1",
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}
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zone1Rack1 := map[string]string{
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"zone": "zone1",
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"rack": "rack1",
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}
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zone1Rack2 := map[string]string{
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"zone": "zone1",
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"rack": "rack2",
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}
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zone2 := map[string]string{
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"zone": "zone2",
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}
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zone2Rack1 := map[string]string{
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"zone": "zone2",
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"rack": "rack1",
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}
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nozone := map[string]string{
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"name": "value",
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}
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zone0Spec := v1.PodSpec{
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NodeName: "machine01",
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}
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zone1Spec := v1.PodSpec{
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NodeName: "machine11",
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}
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zone2Spec := v1.PodSpec{
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NodeName: "machine21",
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}
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labeledNodes := map[string]map[string]string{
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"machine01": nozone, "machine02": nozone,
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"machine11": zone1, "machine12": zone1,
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"machine21": zone2, "machine22": zone2,
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}
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nodesWithZoneAndRackLabels := map[string]map[string]string{
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"machine01": nozone, "machine02": nozone,
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"machine11": zone1Rack1, "machine12": zone1Rack2,
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"machine21": zone2Rack1, "machine22": zone2Rack1,
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}
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tests := []struct {
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pod *v1.Pod
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pods []*v1.Pod
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nodes map[string]map[string]string
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services []*v1.Service
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labels []string
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expectedList framework.NodeScoreList
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name string
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}{
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{
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pod: new(v1.Pod),
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nodes: labeledNodes,
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labels: []string{"zone"},
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expectedList: []framework.NodeScore{{Name: "machine11", Score: framework.MaxNodeScore}, {Name: "machine12", Score: framework.MaxNodeScore},
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{Name: "machine21", Score: framework.MaxNodeScore}, {Name: "machine22", Score: framework.MaxNodeScore},
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{Name: "machine01", Score: 0}, {Name: "machine02", Score: 0}},
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name: "nothing scheduled",
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},
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{
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pod: &v1.Pod{ObjectMeta: metav1.ObjectMeta{Labels: labels1}},
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pods: []*v1.Pod{{Spec: zone1Spec}},
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nodes: labeledNodes,
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labels: []string{"zone"},
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expectedList: []framework.NodeScore{{Name: "machine11", Score: framework.MaxNodeScore}, {Name: "machine12", Score: framework.MaxNodeScore},
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{Name: "machine21", Score: framework.MaxNodeScore}, {Name: "machine22", Score: framework.MaxNodeScore},
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{Name: "machine01", Score: 0}, {Name: "machine02", Score: 0}},
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name: "no services",
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},
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{
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pod: &v1.Pod{ObjectMeta: metav1.ObjectMeta{Labels: labels1}},
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pods: []*v1.Pod{{Spec: zone1Spec, ObjectMeta: metav1.ObjectMeta{Labels: labels2}}},
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nodes: labeledNodes,
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labels: []string{"zone"},
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services: []*v1.Service{{Spec: v1.ServiceSpec{Selector: map[string]string{"key": "value"}}}},
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expectedList: []framework.NodeScore{{Name: "machine11", Score: framework.MaxNodeScore}, {Name: "machine12", Score: framework.MaxNodeScore},
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{Name: "machine21", Score: framework.MaxNodeScore}, {Name: "machine22", Score: framework.MaxNodeScore},
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{Name: "machine01", Score: 0}, {Name: "machine02", Score: 0}},
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name: "different services",
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},
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{
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pod: &v1.Pod{ObjectMeta: metav1.ObjectMeta{Labels: labels1}},
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pods: []*v1.Pod{
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{Spec: zone0Spec, ObjectMeta: metav1.ObjectMeta{Labels: labels2}},
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{Spec: zone1Spec, ObjectMeta: metav1.ObjectMeta{Labels: labels2}},
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{Spec: zone2Spec, ObjectMeta: metav1.ObjectMeta{Labels: labels1}},
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},
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nodes: labeledNodes,
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labels: []string{"zone"},
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services: []*v1.Service{{Spec: v1.ServiceSpec{Selector: labels1}}},
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expectedList: []framework.NodeScore{{Name: "machine11", Score: framework.MaxNodeScore}, {Name: "machine12", Score: framework.MaxNodeScore},
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{Name: "machine21", Score: 0}, {Name: "machine22", Score: 0},
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{Name: "machine01", Score: 0}, {Name: "machine02", Score: 0}},
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name: "three pods, one service pod",
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},
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{
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pod: &v1.Pod{ObjectMeta: metav1.ObjectMeta{Labels: labels1}},
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pods: []*v1.Pod{
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{Spec: zone1Spec, ObjectMeta: metav1.ObjectMeta{Labels: labels2}},
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{Spec: zone1Spec, ObjectMeta: metav1.ObjectMeta{Labels: labels1}},
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{Spec: zone2Spec, ObjectMeta: metav1.ObjectMeta{Labels: labels1}},
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},
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nodes: labeledNodes,
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labels: []string{"zone"},
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services: []*v1.Service{{Spec: v1.ServiceSpec{Selector: labels1}}},
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expectedList: []framework.NodeScore{{Name: "machine11", Score: 50}, {Name: "machine12", Score: 50},
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{Name: "machine21", Score: 50}, {Name: "machine22", Score: 50},
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{Name: "machine01", Score: 0}, {Name: "machine02", Score: 0}},
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name: "three pods, two service pods on different machines",
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},
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{
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pod: &v1.Pod{ObjectMeta: metav1.ObjectMeta{Labels: labels1, Namespace: metav1.NamespaceDefault}},
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pods: []*v1.Pod{
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{Spec: zone1Spec, ObjectMeta: metav1.ObjectMeta{Labels: labels1}},
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{Spec: zone1Spec, ObjectMeta: metav1.ObjectMeta{Labels: labels1, Namespace: metav1.NamespaceDefault}},
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{Spec: zone2Spec, ObjectMeta: metav1.ObjectMeta{Labels: labels1}},
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{Spec: zone2Spec, ObjectMeta: metav1.ObjectMeta{Labels: labels1, Namespace: "ns1"}},
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},
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nodes: labeledNodes,
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labels: []string{"zone"},
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services: []*v1.Service{{Spec: v1.ServiceSpec{Selector: labels1}, ObjectMeta: metav1.ObjectMeta{Namespace: metav1.NamespaceDefault}}},
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expectedList: []framework.NodeScore{{Name: "machine11", Score: 0}, {Name: "machine12", Score: 0},
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{Name: "machine21", Score: framework.MaxNodeScore}, {Name: "machine22", Score: framework.MaxNodeScore},
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{Name: "machine01", Score: 0}, {Name: "machine02", Score: 0}},
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name: "three service label match pods in different namespaces",
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},
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{
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pod: &v1.Pod{ObjectMeta: metav1.ObjectMeta{Labels: labels1}},
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pods: []*v1.Pod{
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{Spec: zone1Spec, ObjectMeta: metav1.ObjectMeta{Labels: labels2}},
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{Spec: zone1Spec, ObjectMeta: metav1.ObjectMeta{Labels: labels1}},
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{Spec: zone2Spec, ObjectMeta: metav1.ObjectMeta{Labels: labels1}},
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{Spec: zone2Spec, ObjectMeta: metav1.ObjectMeta{Labels: labels1}},
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},
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nodes: labeledNodes,
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labels: []string{"zone"},
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services: []*v1.Service{{Spec: v1.ServiceSpec{Selector: labels1}}},
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expectedList: []framework.NodeScore{{Name: "machine11", Score: 66}, {Name: "machine12", Score: 66},
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{Name: "machine21", Score: 33}, {Name: "machine22", Score: 33},
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{Name: "machine01", Score: 0}, {Name: "machine02", Score: 0}},
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name: "four pods, three service pods",
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},
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{
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pod: &v1.Pod{ObjectMeta: metav1.ObjectMeta{Labels: labels1}},
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pods: []*v1.Pod{
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{Spec: zone1Spec, ObjectMeta: metav1.ObjectMeta{Labels: labels2}},
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{Spec: zone1Spec, ObjectMeta: metav1.ObjectMeta{Labels: labels1}},
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{Spec: zone2Spec, ObjectMeta: metav1.ObjectMeta{Labels: labels1}},
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},
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nodes: labeledNodes,
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labels: []string{"zone"},
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services: []*v1.Service{{Spec: v1.ServiceSpec{Selector: map[string]string{"baz": "blah"}}}},
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expectedList: []framework.NodeScore{{Name: "machine11", Score: 33}, {Name: "machine12", Score: 33},
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{Name: "machine21", Score: 66}, {Name: "machine22", Score: 66},
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{Name: "machine01", Score: 0}, {Name: "machine02", Score: 0}},
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name: "service with partial pod label matches",
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},
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{
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pod: &v1.Pod{ObjectMeta: metav1.ObjectMeta{Labels: labels1}},
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pods: []*v1.Pod{
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{Spec: zone0Spec, ObjectMeta: metav1.ObjectMeta{Labels: labels1}},
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{Spec: zone1Spec, ObjectMeta: metav1.ObjectMeta{Labels: labels1}},
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{Spec: zone2Spec, ObjectMeta: metav1.ObjectMeta{Labels: labels1}},
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{Spec: zone2Spec, ObjectMeta: metav1.ObjectMeta{Labels: labels1}},
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},
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nodes: labeledNodes,
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labels: []string{"zone"},
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services: []*v1.Service{{Spec: v1.ServiceSpec{Selector: labels1}}},
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expectedList: []framework.NodeScore{{Name: "machine11", Score: 75}, {Name: "machine12", Score: 75},
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{Name: "machine21", Score: 50}, {Name: "machine22", Score: 50},
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{Name: "machine01", Score: 0}, {Name: "machine02", Score: 0}},
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name: "service pod on non-zoned node",
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},
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{
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pod: &v1.Pod{ObjectMeta: metav1.ObjectMeta{Labels: labels1}},
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pods: []*v1.Pod{
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{Spec: zone0Spec, ObjectMeta: metav1.ObjectMeta{Labels: labels2}},
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{Spec: zone1Spec, ObjectMeta: metav1.ObjectMeta{Labels: labels1}},
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{Spec: zone2Spec, ObjectMeta: metav1.ObjectMeta{Labels: labels1}},
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},
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nodes: nodesWithZoneAndRackLabels,
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labels: []string{"zone", "rack"},
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services: []*v1.Service{{Spec: v1.ServiceSpec{Selector: labels1}}},
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expectedList: []framework.NodeScore{{Name: "machine11", Score: 25}, {Name: "machine12", Score: 75},
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{Name: "machine21", Score: 25}, {Name: "machine22", Score: 25},
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{Name: "machine01", Score: 0}, {Name: "machine02", Score: 0}},
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name: "three pods, two service pods, with rack label",
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},
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}
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// these local variables just make sure controllerLister\replicaSetLister\statefulSetLister not nil
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// when construct metaDataProducer
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sss := []*apps.StatefulSet{{Spec: apps.StatefulSetSpec{Selector: &metav1.LabelSelector{MatchLabels: map[string]string{"foo": "bar"}}}}}
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rcs := []*v1.ReplicationController{{Spec: v1.ReplicationControllerSpec{Selector: map[string]string{"foo": "bar"}}}}
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rss := []*apps.ReplicaSet{{Spec: apps.ReplicaSetSpec{Selector: &metav1.LabelSelector{MatchLabels: map[string]string{"foo": "bar"}}}}}
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for _, test := range tests {
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t.Run(test.name, func(t *testing.T) {
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nodes := makeLabeledNodeList(test.nodes)
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snapshot := nodeinfosnapshot.NewSnapshot(nodeinfosnapshot.CreateNodeInfoMap(test.pods, nodes))
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fh, _ := framework.NewFramework(nil, nil, nil, framework.WithSnapshotSharedLister(snapshot))
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serviceLister := fakelisters.ServiceLister(test.services)
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priorityMapFunction, priorityReduceFunction := priorities.NewServiceAntiAffinityPriority(snapshot.Pods(), serviceLister, test.labels)
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|
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p := &ServiceAffinity{
|
|
handle: fh,
|
|
priorityMapFunction: priorityMapFunction,
|
|
priorityReduceFunction: priorityReduceFunction,
|
|
}
|
|
metaDataProducer := priorities.NewMetadataFactory(
|
|
fakelisters.ServiceLister(test.services),
|
|
fakelisters.ControllerLister(rcs),
|
|
fakelisters.ReplicaSetLister(rss),
|
|
fakelisters.StatefulSetLister(sss),
|
|
1)
|
|
metaData := metaDataProducer(test.pod, nodes, snapshot)
|
|
state := framework.NewCycleState()
|
|
state.Write(migration.PrioritiesStateKey, &migration.PrioritiesStateData{Reference: metaData})
|
|
|
|
var gotList framework.NodeScoreList
|
|
for _, n := range makeLabeledNodeList(test.nodes) {
|
|
score, status := p.Score(context.Background(), state, test.pod, n.Name)
|
|
if !status.IsSuccess() {
|
|
t.Errorf("unexpected error: %v", status)
|
|
}
|
|
gotList = append(gotList, framework.NodeScore{Name: n.Name, Score: score})
|
|
}
|
|
|
|
status := p.ScoreExtensions().NormalizeScore(context.Background(), state, test.pod, gotList)
|
|
if !status.IsSuccess() {
|
|
t.Errorf("unexpected error: %v", status)
|
|
}
|
|
|
|
// sort the two lists to avoid failures on account of different ordering
|
|
sortNodeScoreList(test.expectedList)
|
|
sortNodeScoreList(gotList)
|
|
if !reflect.DeepEqual(test.expectedList, gotList) {
|
|
t.Errorf("expected %#v, got %#v", test.expectedList, gotList)
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
func makeLabeledNodeList(nodeMap map[string]map[string]string) []*v1.Node {
|
|
nodes := make([]*v1.Node, 0, len(nodeMap))
|
|
for nodeName, labels := range nodeMap {
|
|
nodes = append(nodes, &v1.Node{ObjectMeta: metav1.ObjectMeta{Name: nodeName, Labels: labels}})
|
|
}
|
|
return nodes
|
|
}
|
|
|
|
func sortNodeScoreList(out framework.NodeScoreList) {
|
|
sort.Slice(out, func(i, j int) bool {
|
|
if out[i].Score == out[j].Score {
|
|
return out[i].Name < out[j].Name
|
|
}
|
|
return out[i].Score < out[j].Score
|
|
})
|
|
}
|