mirror of
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9e4ee5ecc3
Having this interface allows us to perform a tight loop of:
for each container {
containerHints = {}
for each provider {
containerHints[provider] = provider.GatherHints(container)
}
containerHints.MergeAndPublish()
for each provider {
provider.Allocate(container)
}
}
With this in place we can now be sure that the hints gathered in one
iteration of the loop always consider the allocations made in the
previous.
755 lines
17 KiB
Go
755 lines
17 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 topologymanager
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import (
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"fmt"
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"reflect"
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"strings"
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"testing"
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"k8s.io/api/core/v1"
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"k8s.io/apimachinery/pkg/types"
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"k8s.io/kubernetes/pkg/kubelet/cm/topologymanager/bitmask"
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"k8s.io/kubernetes/pkg/kubelet/lifecycle"
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)
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func NewTestBitMask(sockets ...int) bitmask.BitMask {
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s, _ := bitmask.NewBitMask(sockets...)
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return s
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}
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func TestNewManager(t *testing.T) {
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tcases := []struct {
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description string
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policyName string
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expectedPolicy string
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expectedError error
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}{
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{
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description: "Policy is set to best-effort",
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policyName: "best-effort",
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expectedPolicy: "best-effort",
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},
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{
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description: "Policy is set to restricted",
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policyName: "restricted",
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expectedPolicy: "restricted",
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},
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{
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description: "Policy is set to unknown",
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policyName: "unknown",
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expectedError: fmt.Errorf("unknown policy: \"unknown\""),
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},
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}
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for _, tc := range tcases {
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mngr, err := NewManager(nil, tc.policyName)
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if tc.expectedError != nil {
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if !strings.Contains(err.Error(), tc.expectedError.Error()) {
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t.Errorf("Unexpected error message. Have: %s wants %s", err.Error(), tc.expectedError.Error())
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}
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} else {
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rawMgr := mngr.(*manager)
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if rawMgr.policy.Name() != tc.expectedPolicy {
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t.Errorf("Unexpected policy name. Have: %q wants %q", rawMgr.policy.Name(), tc.expectedPolicy)
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}
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}
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}
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}
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type mockHintProvider struct {
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th map[string][]TopologyHint
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//TODO: Add this field and add some tests to make sure things error out
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//appropriately on allocation errors.
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//allocateError error
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}
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func (m *mockHintProvider) GetTopologyHints(pod *v1.Pod, container *v1.Container) map[string][]TopologyHint {
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return m.th
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}
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func (m *mockHintProvider) Allocate(pod *v1.Pod, container *v1.Container) error {
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//return allocateError
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return nil
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}
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func TestGetAffinity(t *testing.T) {
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tcases := []struct {
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name string
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containerName string
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podUID string
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expected TopologyHint
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}{
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{
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name: "case1",
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containerName: "nginx",
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podUID: "0aafa4c4-38e8-11e9-bcb1-a4bf01040474",
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expected: TopologyHint{},
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},
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}
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for _, tc := range tcases {
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mngr := manager{}
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actual := mngr.GetAffinity(tc.podUID, tc.containerName)
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if !reflect.DeepEqual(actual, tc.expected) {
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t.Errorf("Expected Affinity in result to be %v, got %v", tc.expected, actual)
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}
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}
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}
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func TestAccumulateProvidersHints(t *testing.T) {
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tcases := []struct {
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name string
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hp []HintProvider
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expected []map[string][]TopologyHint
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}{
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{
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name: "TopologyHint not set",
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hp: []HintProvider{},
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expected: nil,
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},
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{
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name: "HintProvider returns empty non-nil map[string][]TopologyHint",
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hp: []HintProvider{
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&mockHintProvider{
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map[string][]TopologyHint{},
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},
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},
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expected: []map[string][]TopologyHint{
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{},
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},
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},
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{
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name: "HintProvider returns - nil map[string][]TopologyHint from provider",
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hp: []HintProvider{
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&mockHintProvider{
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map[string][]TopologyHint{
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"resource": nil,
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},
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},
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},
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expected: []map[string][]TopologyHint{
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{
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"resource": nil,
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},
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},
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},
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{
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name: "2 HintProviders with 1 resource returns hints",
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hp: []HintProvider{
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&mockHintProvider{
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map[string][]TopologyHint{
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"resource1": {TopologyHint{}},
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},
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},
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&mockHintProvider{
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map[string][]TopologyHint{
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"resource2": {TopologyHint{}},
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},
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},
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},
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expected: []map[string][]TopologyHint{
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{
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"resource1": {TopologyHint{}},
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},
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{
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"resource2": {TopologyHint{}},
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},
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},
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},
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{
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name: "2 HintProviders 1 with 1 resource 1 with nil hints",
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hp: []HintProvider{
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&mockHintProvider{
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map[string][]TopologyHint{
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"resource1": {TopologyHint{}},
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},
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},
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&mockHintProvider{nil},
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},
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expected: []map[string][]TopologyHint{
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{
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"resource1": {TopologyHint{}},
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},
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nil,
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},
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},
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{
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name: "2 HintProviders 1 with 1 resource 1 empty hints",
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hp: []HintProvider{
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&mockHintProvider{
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map[string][]TopologyHint{
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"resource1": {TopologyHint{}},
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},
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},
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&mockHintProvider{
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map[string][]TopologyHint{},
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},
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},
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expected: []map[string][]TopologyHint{
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{
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"resource1": {TopologyHint{}},
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},
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{},
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},
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},
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{
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name: "HintProvider with 2 resources returns hints",
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hp: []HintProvider{
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&mockHintProvider{
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map[string][]TopologyHint{
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"resource1": {TopologyHint{}},
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"resource2": {TopologyHint{}},
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},
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},
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},
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expected: []map[string][]TopologyHint{
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{
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"resource1": {TopologyHint{}},
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"resource2": {TopologyHint{}},
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},
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},
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},
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}
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for _, tc := range tcases {
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mngr := manager{
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hintProviders: tc.hp,
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}
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actual := mngr.accumulateProvidersHints(&v1.Pod{}, &v1.Container{})
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if !reflect.DeepEqual(actual, tc.expected) {
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t.Errorf("Test Case %s: Expected NUMANodeAffinity in result to be %v, got %v", tc.name, tc.expected, actual)
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}
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}
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}
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type mockPolicy struct {
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nonePolicy
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ph []map[string][]TopologyHint
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}
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func (p *mockPolicy) Merge(providersHints []map[string][]TopologyHint) (TopologyHint, bool) {
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p.ph = providersHints
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return TopologyHint{}, true
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}
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func TestCalculateAffinity(t *testing.T) {
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tcases := []struct {
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name string
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hp []HintProvider
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expected []map[string][]TopologyHint
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}{
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{
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name: "No hint providers",
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hp: []HintProvider{},
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expected: ([]map[string][]TopologyHint)(nil),
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},
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{
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name: "HintProvider returns empty non-nil map[string][]TopologyHint",
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hp: []HintProvider{
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&mockHintProvider{
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map[string][]TopologyHint{},
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},
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},
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expected: []map[string][]TopologyHint{
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{},
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},
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},
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{
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name: "HintProvider returns -nil map[string][]TopologyHint from provider",
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hp: []HintProvider{
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&mockHintProvider{
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map[string][]TopologyHint{
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"resource": nil,
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},
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},
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},
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expected: []map[string][]TopologyHint{
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{
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"resource": nil,
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},
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},
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},
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{
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name: "Assorted HintProviders",
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hp: []HintProvider{
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&mockHintProvider{
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map[string][]TopologyHint{
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"resource-1/A": {
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{NUMANodeAffinity: NewTestBitMask(0), Preferred: true},
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{NUMANodeAffinity: NewTestBitMask(0, 1), Preferred: false},
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},
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"resource-1/B": {
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{NUMANodeAffinity: NewTestBitMask(1), Preferred: true},
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{NUMANodeAffinity: NewTestBitMask(1, 2), Preferred: false},
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},
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},
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},
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&mockHintProvider{
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map[string][]TopologyHint{
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"resource-2/A": {
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{NUMANodeAffinity: NewTestBitMask(2), Preferred: true},
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{NUMANodeAffinity: NewTestBitMask(3, 4), Preferred: false},
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},
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"resource-2/B": {
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{NUMANodeAffinity: NewTestBitMask(2), Preferred: true},
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{NUMANodeAffinity: NewTestBitMask(3, 4), Preferred: false},
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},
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},
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},
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&mockHintProvider{
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map[string][]TopologyHint{
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"resource-3": nil,
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},
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},
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},
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expected: []map[string][]TopologyHint{
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{
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"resource-1/A": {
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{NUMANodeAffinity: NewTestBitMask(0), Preferred: true},
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{NUMANodeAffinity: NewTestBitMask(0, 1), Preferred: false},
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},
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"resource-1/B": {
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{NUMANodeAffinity: NewTestBitMask(1), Preferred: true},
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{NUMANodeAffinity: NewTestBitMask(1, 2), Preferred: false},
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},
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},
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{
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"resource-2/A": {
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{NUMANodeAffinity: NewTestBitMask(2), Preferred: true},
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{NUMANodeAffinity: NewTestBitMask(3, 4), Preferred: false},
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},
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"resource-2/B": {
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{NUMANodeAffinity: NewTestBitMask(2), Preferred: true},
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{NUMANodeAffinity: NewTestBitMask(3, 4), Preferred: false},
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},
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},
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{
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"resource-3": nil,
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},
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},
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},
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}
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for _, tc := range tcases {
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mngr := manager{}
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mngr.policy = &mockPolicy{}
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mngr.hintProviders = tc.hp
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mngr.calculateAffinity(&v1.Pod{}, &v1.Container{})
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actual := mngr.policy.(*mockPolicy).ph
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if !reflect.DeepEqual(tc.expected, actual) {
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t.Errorf("Test Case: %s", tc.name)
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t.Errorf("Expected result to be %v, got %v", tc.expected, actual)
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}
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}
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}
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func TestAddContainer(t *testing.T) {
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testCases := []struct {
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name string
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containerID string
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podUID types.UID
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}{
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{
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name: "Case1",
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containerID: "nginx",
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podUID: "0aafa4c4-38e8-11e9-bcb1-a4bf01040474",
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},
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{
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name: "Case2",
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containerID: "Busy_Box",
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podUID: "b3ee37fc-39a5-11e9-bcb1-a4bf01040474",
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},
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}
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mngr := manager{}
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mngr.podMap = make(map[string]string)
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for _, tc := range testCases {
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pod := v1.Pod{}
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pod.UID = tc.podUID
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err := mngr.AddContainer(&pod, tc.containerID)
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if err != nil {
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t.Errorf("Expected error to be nil but got: %v", err)
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}
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if val, ok := mngr.podMap[tc.containerID]; ok {
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if reflect.DeepEqual(val, pod.UID) {
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t.Errorf("Error occurred")
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}
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} else {
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t.Errorf("Error occurred, Pod not added to podMap")
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}
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}
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}
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func TestRemoveContainer(t *testing.T) {
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testCases := []struct {
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name string
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containerID string
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podUID types.UID
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}{
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{
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name: "Case1",
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containerID: "nginx",
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podUID: "0aafa4c4-38e8-11e9-bcb1-a4bf01040474",
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},
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{
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name: "Case2",
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containerID: "Busy_Box",
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podUID: "b3ee37fc-39a5-11e9-bcb1-a4bf01040474",
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},
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}
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var len1, len2 int
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mngr := manager{}
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mngr.podMap = make(map[string]string)
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for _, tc := range testCases {
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mngr.podMap[tc.containerID] = string(tc.podUID)
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len1 = len(mngr.podMap)
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err := mngr.RemoveContainer(tc.containerID)
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len2 = len(mngr.podMap)
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if err != nil {
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t.Errorf("Expected error to be nil but got: %v", err)
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}
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if len1-len2 != 1 {
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t.Errorf("Remove Pod resulted in error")
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}
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}
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}
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func TestAddHintProvider(t *testing.T) {
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var len1 int
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tcases := []struct {
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name string
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hp []HintProvider
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}{
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{
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name: "Add HintProvider",
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hp: []HintProvider{
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&mockHintProvider{},
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},
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},
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}
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mngr := manager{}
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for _, tc := range tcases {
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mngr.hintProviders = []HintProvider{}
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len1 = len(mngr.hintProviders)
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mngr.AddHintProvider(tc.hp[0])
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}
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len2 := len(mngr.hintProviders)
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if len2-len1 != 1 {
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t.Errorf("error")
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}
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}
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|
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func TestAdmit(t *testing.T) {
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numaNodes := []int{0, 1}
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|
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tcases := []struct {
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name string
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result lifecycle.PodAdmitResult
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qosClass v1.PodQOSClass
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policy Policy
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hp []HintProvider
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expected bool
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}{
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{
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name: "QOSClass set as BestEffort. None Policy. No Hints.",
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qosClass: v1.PodQOSBestEffort,
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policy: NewNonePolicy(),
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hp: []HintProvider{},
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expected: true,
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},
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{
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name: "QOSClass set as Guaranteed. None Policy. No Hints.",
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qosClass: v1.PodQOSGuaranteed,
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policy: NewNonePolicy(),
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hp: []HintProvider{},
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expected: true,
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},
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{
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name: "QOSClass set as BestEffort. single-numa-node Policy. No Hints.",
|
|
qosClass: v1.PodQOSBestEffort,
|
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policy: NewRestrictedPolicy(numaNodes),
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hp: []HintProvider{
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&mockHintProvider{},
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},
|
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expected: true,
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},
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{
|
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name: "QOSClass set as BestEffort. Restricted Policy. No Hints.",
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qosClass: v1.PodQOSBestEffort,
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policy: NewRestrictedPolicy(numaNodes),
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hp: []HintProvider{
|
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&mockHintProvider{},
|
|
},
|
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expected: true,
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|
},
|
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{
|
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name: "QOSClass set as Guaranteed. BestEffort Policy. Preferred Affinity.",
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qosClass: v1.PodQOSGuaranteed,
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policy: NewBestEffortPolicy(numaNodes),
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hp: []HintProvider{
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&mockHintProvider{
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map[string][]TopologyHint{
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"resource": {
|
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{
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NUMANodeAffinity: NewTestBitMask(0),
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Preferred: true,
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},
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|
{
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NUMANodeAffinity: NewTestBitMask(0, 1),
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Preferred: false,
|
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},
|
|
},
|
|
},
|
|
},
|
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},
|
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expected: true,
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},
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{
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name: "QOSClass set as Guaranteed. BestEffort Policy. More than one Preferred Affinity.",
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|
qosClass: v1.PodQOSGuaranteed,
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policy: NewBestEffortPolicy(numaNodes),
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hp: []HintProvider{
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&mockHintProvider{
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map[string][]TopologyHint{
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"resource": {
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{
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NUMANodeAffinity: NewTestBitMask(0),
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Preferred: true,
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},
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{
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NUMANodeAffinity: NewTestBitMask(1),
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Preferred: true,
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},
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{
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NUMANodeAffinity: NewTestBitMask(0, 1),
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Preferred: false,
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},
|
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},
|
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},
|
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},
|
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},
|
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expected: true,
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},
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{
|
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name: "QOSClass set as Burstable. BestEffort Policy. More than one Preferred Affinity.",
|
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qosClass: v1.PodQOSBurstable,
|
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policy: NewBestEffortPolicy(numaNodes),
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hp: []HintProvider{
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&mockHintProvider{
|
|
map[string][]TopologyHint{
|
|
"resource": {
|
|
{
|
|
NUMANodeAffinity: NewTestBitMask(0),
|
|
Preferred: true,
|
|
},
|
|
{
|
|
NUMANodeAffinity: NewTestBitMask(1),
|
|
Preferred: true,
|
|
},
|
|
{
|
|
NUMANodeAffinity: NewTestBitMask(0, 1),
|
|
Preferred: false,
|
|
},
|
|
},
|
|
},
|
|
},
|
|
},
|
|
expected: true,
|
|
},
|
|
{
|
|
name: "QOSClass set as Guaranteed. BestEffort Policy. No Preferred Affinity.",
|
|
qosClass: v1.PodQOSGuaranteed,
|
|
policy: NewBestEffortPolicy(numaNodes),
|
|
hp: []HintProvider{
|
|
&mockHintProvider{
|
|
map[string][]TopologyHint{
|
|
"resource": {
|
|
{
|
|
NUMANodeAffinity: NewTestBitMask(0, 1),
|
|
Preferred: false,
|
|
},
|
|
},
|
|
},
|
|
},
|
|
},
|
|
expected: true,
|
|
},
|
|
{
|
|
name: "QOSClass set as Guaranteed. Restricted Policy. Preferred Affinity.",
|
|
qosClass: v1.PodQOSGuaranteed,
|
|
policy: NewRestrictedPolicy(numaNodes),
|
|
hp: []HintProvider{
|
|
&mockHintProvider{
|
|
map[string][]TopologyHint{
|
|
"resource": {
|
|
{
|
|
NUMANodeAffinity: NewTestBitMask(0),
|
|
Preferred: true,
|
|
},
|
|
{
|
|
NUMANodeAffinity: NewTestBitMask(0, 1),
|
|
Preferred: false,
|
|
},
|
|
},
|
|
},
|
|
},
|
|
},
|
|
expected: true,
|
|
},
|
|
{
|
|
name: "QOSClass set as Burstable. Restricted Policy. Preferred Affinity.",
|
|
qosClass: v1.PodQOSBurstable,
|
|
policy: NewRestrictedPolicy(numaNodes),
|
|
hp: []HintProvider{
|
|
&mockHintProvider{
|
|
map[string][]TopologyHint{
|
|
"resource": {
|
|
{
|
|
NUMANodeAffinity: NewTestBitMask(0),
|
|
Preferred: true,
|
|
},
|
|
{
|
|
NUMANodeAffinity: NewTestBitMask(0, 1),
|
|
Preferred: false,
|
|
},
|
|
},
|
|
},
|
|
},
|
|
},
|
|
expected: true,
|
|
},
|
|
{
|
|
name: "QOSClass set as Guaranteed. Restricted Policy. More than one Preferred affinity.",
|
|
qosClass: v1.PodQOSGuaranteed,
|
|
policy: NewRestrictedPolicy(numaNodes),
|
|
hp: []HintProvider{
|
|
&mockHintProvider{
|
|
map[string][]TopologyHint{
|
|
"resource": {
|
|
{
|
|
NUMANodeAffinity: NewTestBitMask(0),
|
|
Preferred: true,
|
|
},
|
|
{
|
|
NUMANodeAffinity: NewTestBitMask(1),
|
|
Preferred: true,
|
|
},
|
|
{
|
|
NUMANodeAffinity: NewTestBitMask(0, 1),
|
|
Preferred: false,
|
|
},
|
|
},
|
|
},
|
|
},
|
|
},
|
|
expected: true,
|
|
},
|
|
{
|
|
name: "QOSClass set as Burstable. Restricted Policy. More than one Preferred affinity.",
|
|
qosClass: v1.PodQOSBurstable,
|
|
policy: NewRestrictedPolicy(numaNodes),
|
|
hp: []HintProvider{
|
|
&mockHintProvider{
|
|
map[string][]TopologyHint{
|
|
"resource": {
|
|
{
|
|
NUMANodeAffinity: NewTestBitMask(0),
|
|
Preferred: true,
|
|
},
|
|
{
|
|
NUMANodeAffinity: NewTestBitMask(1),
|
|
Preferred: true,
|
|
},
|
|
{
|
|
NUMANodeAffinity: NewTestBitMask(0, 1),
|
|
Preferred: false,
|
|
},
|
|
},
|
|
},
|
|
},
|
|
},
|
|
expected: true,
|
|
},
|
|
{
|
|
name: "QOSClass set as Guaranteed. Restricted Policy. No Preferred affinity.",
|
|
qosClass: v1.PodQOSGuaranteed,
|
|
policy: NewRestrictedPolicy(numaNodes),
|
|
hp: []HintProvider{
|
|
&mockHintProvider{
|
|
map[string][]TopologyHint{
|
|
"resource": {
|
|
{
|
|
NUMANodeAffinity: NewTestBitMask(0, 1),
|
|
Preferred: false,
|
|
},
|
|
},
|
|
},
|
|
},
|
|
},
|
|
expected: false,
|
|
},
|
|
{
|
|
name: "QOSClass set as Burstable. Restricted Policy. No Preferred affinity.",
|
|
qosClass: v1.PodQOSBurstable,
|
|
policy: NewRestrictedPolicy(numaNodes),
|
|
hp: []HintProvider{
|
|
&mockHintProvider{
|
|
map[string][]TopologyHint{
|
|
"resource": {
|
|
{
|
|
NUMANodeAffinity: NewTestBitMask(0, 1),
|
|
Preferred: false,
|
|
},
|
|
},
|
|
},
|
|
},
|
|
},
|
|
expected: false,
|
|
},
|
|
}
|
|
for _, tc := range tcases {
|
|
man := manager{
|
|
policy: tc.policy,
|
|
podTopologyHints: make(map[string]map[string]TopologyHint),
|
|
hintProviders: tc.hp,
|
|
}
|
|
|
|
pod := &v1.Pod{
|
|
Spec: v1.PodSpec{
|
|
Containers: []v1.Container{
|
|
{
|
|
Resources: v1.ResourceRequirements{},
|
|
},
|
|
},
|
|
},
|
|
Status: v1.PodStatus{
|
|
QOSClass: tc.qosClass,
|
|
},
|
|
}
|
|
|
|
podAttr := lifecycle.PodAdmitAttributes{
|
|
Pod: pod,
|
|
}
|
|
|
|
actual := man.Admit(&podAttr)
|
|
if actual.Admit != tc.expected {
|
|
t.Errorf("Error occurred, expected Admit in result to be %v got %v", tc.expected, actual.Admit)
|
|
}
|
|
}
|
|
}
|