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kubernetes/pkg/kubelet/cm/cpumanager/cpu_manager_test.go
Francesco Romani 23abdab2b7 smtalign: propagate policy options to policies 
Consume in the static policy the cpu manager policy options from
the cpumanager instance.
Validate in the none policy if any option is given, and fail if so -
this is almost surely a configuration mistake.

Add new cpumanager.Options type to hold the options and translate from
user arguments to flags.

Co-authored-by: Swati Sehgal <swsehgal@redhat.com>
Signed-off-by: Francesco Romani <fromani@redhat.com>
2021-07-08 23:15:37 +02:00

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/*
Copyright 2017 The Kubernetes Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package cpumanager
import (
"fmt"
"reflect"
"strconv"
"strings"
"testing"
"time"
"io/ioutil"
"os"
cadvisorapi "github.com/google/cadvisor/info/v1"
v1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/api/resource"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/types"
runtimeapi "k8s.io/cri-api/pkg/apis/runtime/v1alpha2"
"k8s.io/kubernetes/pkg/kubelet/cm/containermap"
"k8s.io/kubernetes/pkg/kubelet/cm/cpumanager/state"
"k8s.io/kubernetes/pkg/kubelet/cm/cpumanager/topology"
"k8s.io/kubernetes/pkg/kubelet/cm/cpuset"
"k8s.io/kubernetes/pkg/kubelet/cm/topologymanager"
)
type mockState struct {
assignments state.ContainerCPUAssignments
defaultCPUSet cpuset.CPUSet
}
func (s *mockState) GetCPUSet(podUID string, containerName string) (cpuset.CPUSet, bool) {
res, ok := s.assignments[podUID][containerName]
return res.Clone(), ok
}
func (s *mockState) GetDefaultCPUSet() cpuset.CPUSet {
return s.defaultCPUSet.Clone()
}
func (s *mockState) GetCPUSetOrDefault(podUID string, containerName string) cpuset.CPUSet {
if res, ok := s.GetCPUSet(podUID, containerName); ok {
return res
}
return s.GetDefaultCPUSet()
}
func (s *mockState) SetCPUSet(podUID string, containerName string, cset cpuset.CPUSet) {
if _, exists := s.assignments[podUID]; !exists {
s.assignments[podUID] = make(map[string]cpuset.CPUSet)
}
s.assignments[podUID][containerName] = cset
}
func (s *mockState) SetDefaultCPUSet(cset cpuset.CPUSet) {
s.defaultCPUSet = cset
}
func (s *mockState) Delete(podUID string, containerName string) {
delete(s.assignments[podUID], containerName)
if len(s.assignments[podUID]) == 0 {
delete(s.assignments, podUID)
}
}
func (s *mockState) ClearState() {
s.defaultCPUSet = cpuset.CPUSet{}
s.assignments = make(state.ContainerCPUAssignments)
}
func (s *mockState) SetCPUAssignments(a state.ContainerCPUAssignments) {
s.assignments = a.Clone()
}
func (s *mockState) GetCPUAssignments() state.ContainerCPUAssignments {
return s.assignments.Clone()
}
type mockPolicy struct {
err error
}
func (p *mockPolicy) Name() string {
return "mock"
}
func (p *mockPolicy) Start(s state.State) error {
return p.err
}
func (p *mockPolicy) Allocate(s state.State, pod *v1.Pod, container *v1.Container) error {
return p.err
}
func (p *mockPolicy) RemoveContainer(s state.State, podUID string, containerName string) error {
return p.err
}
func (p *mockPolicy) GetTopologyHints(s state.State, pod *v1.Pod, container *v1.Container) map[string][]topologymanager.TopologyHint {
return nil
}
func (p *mockPolicy) GetPodTopologyHints(s state.State, pod *v1.Pod) map[string][]topologymanager.TopologyHint {
return nil
}
func (p *mockPolicy) GetAllocatableCPUs(m state.State) cpuset.CPUSet {
return cpuset.NewCPUSet()
}
type mockRuntimeService struct {
err error
}
func (rt mockRuntimeService) UpdateContainerResources(id string, resources *runtimeapi.LinuxContainerResources) error {
return rt.err
}
type mockPodStatusProvider struct {
podStatus v1.PodStatus
found bool
}
func (psp mockPodStatusProvider) GetPodStatus(uid types.UID) (v1.PodStatus, bool) {
return psp.podStatus, psp.found
}
func makePod(podUID, containerName, cpuRequest, cpuLimit string) *v1.Pod {
pod := &v1.Pod{
Spec: v1.PodSpec{
Containers: []v1.Container{
{
Resources: v1.ResourceRequirements{
Requests: v1.ResourceList{
v1.ResourceName(v1.ResourceCPU): resource.MustParse(cpuRequest),
v1.ResourceName(v1.ResourceMemory): resource.MustParse("1G"),
},
Limits: v1.ResourceList{
v1.ResourceName(v1.ResourceCPU): resource.MustParse(cpuLimit),
v1.ResourceName(v1.ResourceMemory): resource.MustParse("1G"),
},
},
},
},
},
}
pod.UID = types.UID(podUID)
pod.Spec.Containers[0].Name = containerName
return pod
}
func makeMultiContainerPod(initCPUs, appCPUs []struct{ request, limit string }) *v1.Pod {
pod := &v1.Pod{
ObjectMeta: metav1.ObjectMeta{
Name: "pod",
UID: "podUID",
},
Spec: v1.PodSpec{
InitContainers: []v1.Container{},
Containers: []v1.Container{},
},
}
for i, cpu := range initCPUs {
pod.Spec.InitContainers = append(pod.Spec.InitContainers, v1.Container{
Name: "initContainer-" + strconv.Itoa(i),
Resources: v1.ResourceRequirements{
Requests: v1.ResourceList{
v1.ResourceName(v1.ResourceCPU): resource.MustParse(cpu.request),
v1.ResourceName(v1.ResourceMemory): resource.MustParse("1G"),
},
Limits: v1.ResourceList{
v1.ResourceName(v1.ResourceCPU): resource.MustParse(cpu.limit),
v1.ResourceName(v1.ResourceMemory): resource.MustParse("1G"),
},
},
})
}
for i, cpu := range appCPUs {
pod.Spec.Containers = append(pod.Spec.Containers, v1.Container{
Name: "appContainer-" + strconv.Itoa(i),
Resources: v1.ResourceRequirements{
Requests: v1.ResourceList{
v1.ResourceName(v1.ResourceCPU): resource.MustParse(cpu.request),
v1.ResourceName(v1.ResourceMemory): resource.MustParse("1G"),
},
Limits: v1.ResourceList{
v1.ResourceName(v1.ResourceCPU): resource.MustParse(cpu.limit),
v1.ResourceName(v1.ResourceMemory): resource.MustParse("1G"),
},
},
})
}
return pod
}
func TestCPUManagerAdd(t *testing.T) {
testPolicy, _ := NewStaticPolicy(
&topology.CPUTopology{
NumCPUs: 4,
NumSockets: 1,
NumCores: 4,
CPUDetails: map[int]topology.CPUInfo{
0: {CoreID: 0, SocketID: 0},
1: {CoreID: 1, SocketID: 0},
2: {CoreID: 2, SocketID: 0},
3: {CoreID: 3, SocketID: 0},
},
},
0,
cpuset.NewCPUSet(),
topologymanager.NewFakeManager(),
nil)
testCases := []struct {
description string
updateErr error
policy Policy
expCPUSet cpuset.CPUSet
expAllocateErr error
expAddContainerErr error
}{
{
description: "cpu manager add - no error",
updateErr: nil,
policy: testPolicy,
expCPUSet: cpuset.NewCPUSet(3, 4),
expAllocateErr: nil,
expAddContainerErr: nil,
},
{
description: "cpu manager add - policy add container error",
updateErr: nil,
policy: &mockPolicy{
err: fmt.Errorf("fake reg error"),
},
expCPUSet: cpuset.NewCPUSet(1, 2, 3, 4),
expAllocateErr: fmt.Errorf("fake reg error"),
expAddContainerErr: nil,
},
}
for _, testCase := range testCases {
mgr := &manager{
policy: testCase.policy,
state: &mockState{
assignments: state.ContainerCPUAssignments{},
defaultCPUSet: cpuset.NewCPUSet(1, 2, 3, 4),
},
lastUpdateState: state.NewMemoryState(),
containerRuntime: mockRuntimeService{
err: testCase.updateErr,
},
containerMap: containermap.NewContainerMap(),
podStatusProvider: mockPodStatusProvider{},
sourcesReady: &sourcesReadyStub{},
}
pod := makePod("fakePod", "fakeContainer", "2", "2")
container := &pod.Spec.Containers[0]
mgr.activePods = func() []*v1.Pod { return []*v1.Pod{pod} }
err := mgr.Allocate(pod, container)
if !reflect.DeepEqual(err, testCase.expAllocateErr) {
t.Errorf("CPU Manager Allocate() error (%v). expected error: %v but got: %v",
testCase.description, testCase.expAllocateErr, err)
}
mgr.AddContainer(pod, container, "fakeID")
_, _, err = mgr.containerMap.GetContainerRef("fakeID")
if !reflect.DeepEqual(err, testCase.expAddContainerErr) {
t.Errorf("CPU Manager AddContainer() error (%v). expected error: %v but got: %v",
testCase.description, testCase.expAddContainerErr, err)
}
if !testCase.expCPUSet.Equals(mgr.state.GetDefaultCPUSet()) {
t.Errorf("CPU Manager AddContainer() error (%v). expected cpuset: %v but got: %v",
testCase.description, testCase.expCPUSet, mgr.state.GetDefaultCPUSet())
}
}
}
func TestCPUManagerAddWithInitContainers(t *testing.T) {
testCases := []struct {
description string
topo *topology.CPUTopology
numReservedCPUs int
initContainerIDs []string
containerIDs []string
stAssignments state.ContainerCPUAssignments
stDefaultCPUSet cpuset.CPUSet
pod *v1.Pod
expInitCSets []cpuset.CPUSet
expCSets []cpuset.CPUSet
}{
{
description: "No Guaranteed Init CPUs",
topo: topoSingleSocketHT,
numReservedCPUs: 0,
stAssignments: state.ContainerCPUAssignments{},
stDefaultCPUSet: cpuset.NewCPUSet(0, 1, 2, 3, 4, 5, 6, 7),
initContainerIDs: []string{"initFakeID"},
containerIDs: []string{"appFakeID"},
pod: makeMultiContainerPod(
[]struct{ request, limit string }{{"100m", "100m"}},
[]struct{ request, limit string }{{"4000m", "4000m"}}),
expInitCSets: []cpuset.CPUSet{
cpuset.NewCPUSet()},
expCSets: []cpuset.CPUSet{
cpuset.NewCPUSet(0, 4, 1, 5)},
},
{
description: "Equal Number of Guaranteed CPUs",
topo: topoSingleSocketHT,
numReservedCPUs: 0,
stAssignments: state.ContainerCPUAssignments{},
stDefaultCPUSet: cpuset.NewCPUSet(0, 1, 2, 3, 4, 5, 6, 7),
initContainerIDs: []string{"initFakeID"},
containerIDs: []string{"appFakeID"},
pod: makeMultiContainerPod(
[]struct{ request, limit string }{{"4000m", "4000m"}},
[]struct{ request, limit string }{{"4000m", "4000m"}}),
expInitCSets: []cpuset.CPUSet{
cpuset.NewCPUSet(0, 4, 1, 5)},
expCSets: []cpuset.CPUSet{
cpuset.NewCPUSet(0, 4, 1, 5)},
},
{
description: "More Init Container Guaranteed CPUs",
topo: topoSingleSocketHT,
numReservedCPUs: 0,
stAssignments: state.ContainerCPUAssignments{},
stDefaultCPUSet: cpuset.NewCPUSet(0, 1, 2, 3, 4, 5, 6, 7),
initContainerIDs: []string{"initFakeID"},
containerIDs: []string{"appFakeID"},
pod: makeMultiContainerPod(
[]struct{ request, limit string }{{"6000m", "6000m"}},
[]struct{ request, limit string }{{"4000m", "4000m"}}),
expInitCSets: []cpuset.CPUSet{
cpuset.NewCPUSet(0, 4, 1, 5, 2, 6)},
expCSets: []cpuset.CPUSet{
cpuset.NewCPUSet(0, 4, 1, 5)},
},
{
description: "Less Init Container Guaranteed CPUs",
topo: topoSingleSocketHT,
numReservedCPUs: 0,
stAssignments: state.ContainerCPUAssignments{},
stDefaultCPUSet: cpuset.NewCPUSet(0, 1, 2, 3, 4, 5, 6, 7),
initContainerIDs: []string{"initFakeID"},
containerIDs: []string{"appFakeID"},
pod: makeMultiContainerPod(
[]struct{ request, limit string }{{"2000m", "2000m"}},
[]struct{ request, limit string }{{"4000m", "4000m"}}),
expInitCSets: []cpuset.CPUSet{
cpuset.NewCPUSet(0, 4)},
expCSets: []cpuset.CPUSet{
cpuset.NewCPUSet(0, 4, 1, 5)},
},
{
description: "Multi Init Container Equal CPUs",
topo: topoSingleSocketHT,
numReservedCPUs: 0,
stAssignments: state.ContainerCPUAssignments{},
stDefaultCPUSet: cpuset.NewCPUSet(0, 1, 2, 3, 4, 5, 6, 7),
initContainerIDs: []string{"initFakeID-1", "initFakeID-2"},
containerIDs: []string{"appFakeID"},
pod: makeMultiContainerPod(
[]struct{ request, limit string }{
{"2000m", "2000m"},
{"2000m", "2000m"}},
[]struct{ request, limit string }{
{"2000m", "2000m"}}),
expInitCSets: []cpuset.CPUSet{
cpuset.NewCPUSet(0, 4),
cpuset.NewCPUSet(0, 4)},
expCSets: []cpuset.CPUSet{
cpuset.NewCPUSet(0, 4)},
},
{
description: "Multi Init Container Less CPUs",
topo: topoSingleSocketHT,
numReservedCPUs: 0,
stAssignments: state.ContainerCPUAssignments{},
stDefaultCPUSet: cpuset.NewCPUSet(0, 1, 2, 3, 4, 5, 6, 7),
initContainerIDs: []string{"initFakeID-1", "initFakeID-2"},
containerIDs: []string{"appFakeID"},
pod: makeMultiContainerPod(
[]struct{ request, limit string }{
{"4000m", "4000m"},
{"4000m", "4000m"}},
[]struct{ request, limit string }{
{"2000m", "2000m"}}),
expInitCSets: []cpuset.CPUSet{
cpuset.NewCPUSet(0, 4, 1, 5),
cpuset.NewCPUSet(0, 4, 1, 5)},
expCSets: []cpuset.CPUSet{
cpuset.NewCPUSet(0, 4)},
},
{
description: "Multi Init Container More CPUs",
topo: topoSingleSocketHT,
numReservedCPUs: 0,
stAssignments: state.ContainerCPUAssignments{},
stDefaultCPUSet: cpuset.NewCPUSet(0, 1, 2, 3, 4, 5, 6, 7),
initContainerIDs: []string{"initFakeID-1", "initFakeID-2"},
containerIDs: []string{"appFakeID"},
pod: makeMultiContainerPod(
[]struct{ request, limit string }{
{"2000m", "2000m"},
{"2000m", "2000m"}},
[]struct{ request, limit string }{
{"4000m", "4000m"}}),
expInitCSets: []cpuset.CPUSet{
cpuset.NewCPUSet(0, 4),
cpuset.NewCPUSet(0, 4)},
expCSets: []cpuset.CPUSet{
cpuset.NewCPUSet(0, 4, 1, 5)},
},
{
description: "Multi Init Container Increasing CPUs",
topo: topoSingleSocketHT,
numReservedCPUs: 0,
stAssignments: state.ContainerCPUAssignments{},
stDefaultCPUSet: cpuset.NewCPUSet(0, 1, 2, 3, 4, 5, 6, 7),
initContainerIDs: []string{"initFakeID-1", "initFakeID-2"},
containerIDs: []string{"appFakeID"},
pod: makeMultiContainerPod(
[]struct{ request, limit string }{
{"2000m", "2000m"},
{"4000m", "4000m"}},
[]struct{ request, limit string }{
{"6000m", "6000m"}}),
expInitCSets: []cpuset.CPUSet{
cpuset.NewCPUSet(0, 4),
cpuset.NewCPUSet(0, 4, 1, 5)},
expCSets: []cpuset.CPUSet{
cpuset.NewCPUSet(0, 4, 1, 5, 2, 6)},
},
{
description: "Multi Init, Multi App Container Split CPUs",
topo: topoSingleSocketHT,
numReservedCPUs: 0,
stAssignments: state.ContainerCPUAssignments{},
stDefaultCPUSet: cpuset.NewCPUSet(0, 1, 2, 3, 4, 5, 6, 7),
initContainerIDs: []string{"initFakeID-1", "initFakeID-2"},
containerIDs: []string{"appFakeID-1", "appFakeID-2"},
pod: makeMultiContainerPod(
[]struct{ request, limit string }{
{"2000m", "2000m"},
{"4000m", "4000m"}},
[]struct{ request, limit string }{
{"2000m", "2000m"},
{"2000m", "2000m"}}),
expInitCSets: []cpuset.CPUSet{
cpuset.NewCPUSet(0, 4),
cpuset.NewCPUSet(0, 4, 1, 5)},
expCSets: []cpuset.CPUSet{
cpuset.NewCPUSet(0, 4),
cpuset.NewCPUSet(1, 5)},
},
}
for _, testCase := range testCases {
policy, _ := NewStaticPolicy(testCase.topo, testCase.numReservedCPUs, cpuset.NewCPUSet(), topologymanager.NewFakeManager(), nil)
mockState := &mockState{
assignments: testCase.stAssignments,
defaultCPUSet: testCase.stDefaultCPUSet,
}
mgr := &manager{
policy: policy,
state: mockState,
lastUpdateState: state.NewMemoryState(),
containerRuntime: mockRuntimeService{},
containerMap: containermap.NewContainerMap(),
podStatusProvider: mockPodStatusProvider{},
sourcesReady: &sourcesReadyStub{},
activePods: func() []*v1.Pod {
return []*v1.Pod{testCase.pod}
},
}
containers := append(
testCase.pod.Spec.InitContainers,
testCase.pod.Spec.Containers...)
containerIDs := append(
testCase.initContainerIDs,
testCase.containerIDs...)
expCSets := append(
testCase.expInitCSets,
testCase.expCSets...)
cumCSet := cpuset.NewCPUSet()
for i := range containers {
err := mgr.Allocate(testCase.pod, &containers[i])
if err != nil {
t.Errorf("StaticPolicy Allocate() error (%v). unexpected error for container id: %v: %v",
testCase.description, containerIDs[i], err)
}
mgr.AddContainer(testCase.pod, &containers[i], containerIDs[i])
_, _, err = mgr.containerMap.GetContainerRef(containerIDs[i])
if err != nil {
t.Errorf("StaticPolicy AddContainer() error (%v). unexpected error for container id: %v: %v",
testCase.description, containerIDs[i], err)
}
cset, found := mockState.assignments[string(testCase.pod.UID)][containers[i].Name]
if !expCSets[i].IsEmpty() && !found {
t.Errorf("StaticPolicy AddContainer() error (%v). expected container %v to be present in assignments %v",
testCase.description, containers[i].Name, mockState.assignments)
}
if found && !cset.Equals(expCSets[i]) {
t.Errorf("StaticPolicy AddContainer() error (%v). expected cpuset %v for container %v but got %v",
testCase.description, expCSets[i], containers[i].Name, cset)
}
cumCSet = cumCSet.Union(cset)
}
if !testCase.stDefaultCPUSet.Difference(cumCSet).Equals(mockState.defaultCPUSet) {
t.Errorf("StaticPolicy error (%v). expected final state for defaultCPUSet %v but got %v",
testCase.description, testCase.stDefaultCPUSet.Difference(cumCSet), mockState.defaultCPUSet)
}
}
}
func TestCPUManagerGenerate(t *testing.T) {
testCases := []struct {
description string
cpuPolicyName string
nodeAllocatableReservation v1.ResourceList
isTopologyBroken bool
expectedPolicy string
expectedError error
}{
{
description: "set none policy",
cpuPolicyName: "none",
nodeAllocatableReservation: nil,
expectedPolicy: "none",
},
{
description: "invalid policy name",
cpuPolicyName: "invalid",
nodeAllocatableReservation: nil,
expectedError: fmt.Errorf("unknown policy: \"invalid\""),
},
{
description: "static policy",
cpuPolicyName: "static",
nodeAllocatableReservation: v1.ResourceList{v1.ResourceCPU: *resource.NewQuantity(3, resource.DecimalSI)},
expectedPolicy: "static",
},
{
description: "static policy - broken topology",
cpuPolicyName: "static",
nodeAllocatableReservation: v1.ResourceList{},
isTopologyBroken: true,
expectedError: fmt.Errorf("could not detect number of cpus"),
},
{
description: "static policy - broken reservation",
cpuPolicyName: "static",
nodeAllocatableReservation: v1.ResourceList{},
expectedError: fmt.Errorf("unable to determine reserved CPU resources for static policy"),
},
{
description: "static policy - no CPU resources",
cpuPolicyName: "static",
nodeAllocatableReservation: v1.ResourceList{v1.ResourceCPU: *resource.NewQuantity(0, resource.DecimalSI)},
expectedError: fmt.Errorf("the static policy requires systemreserved.cpu + kubereserved.cpu to be greater than zero"),
},
}
mockedMachineInfo := cadvisorapi.MachineInfo{
NumCores: 4,
Topology: []cadvisorapi.Node{
{
Cores: []cadvisorapi.Core{
{
Id: 0,
Threads: []int{0},
},
{
Id: 1,
Threads: []int{1},
},
{
Id: 2,
Threads: []int{2},
},
{
Id: 3,
Threads: []int{3},
},
},
},
},
}
for _, testCase := range testCases {
t.Run(testCase.description, func(t *testing.T) {
machineInfo := &mockedMachineInfo
if testCase.isTopologyBroken {
machineInfo = &cadvisorapi.MachineInfo{}
}
sDir, err := ioutil.TempDir("/tmp/", "cpu_manager_test")
if err != nil {
t.Errorf("cannot create state file: %s", err.Error())
}
defer os.RemoveAll(sDir)
mgr, err := NewManager(testCase.cpuPolicyName, nil, 5*time.Second, machineInfo, cpuset.NewCPUSet(), testCase.nodeAllocatableReservation, sDir, topologymanager.NewFakeManager())
if testCase.expectedError != nil {
if !strings.Contains(err.Error(), testCase.expectedError.Error()) {
t.Errorf("Unexpected error message. Have: %s wants %s", err.Error(), testCase.expectedError.Error())
}
} else {
rawMgr := mgr.(*manager)
if rawMgr.policy.Name() != testCase.expectedPolicy {
t.Errorf("Unexpected policy name. Have: %q wants %q", rawMgr.policy.Name(), testCase.expectedPolicy)
}
if rawMgr.policy.Name() == string(PolicyNone) {
if rawMgr.topology != nil {
t.Errorf("Expected topology to be nil for 'none' policy. Have: %q", rawMgr.topology)
}
}
if rawMgr.policy.Name() != string(PolicyNone) {
if rawMgr.topology == nil {
t.Errorf("Expected topology to be non-nil for policy '%v'. Have: %q", rawMgr.policy.Name(), rawMgr.topology)
}
}
}
})
}
}
func TestCPUManagerRemove(t *testing.T) {
containerID := "fakeID"
containerMap := containermap.NewContainerMap()
mgr := &manager{
policy: &mockPolicy{
err: nil,
},
state: &mockState{
assignments: state.ContainerCPUAssignments{},
defaultCPUSet: cpuset.NewCPUSet(),
},
lastUpdateState: state.NewMemoryState(),
containerRuntime: mockRuntimeService{},
containerMap: containerMap,
activePods: func() []*v1.Pod { return nil },
podStatusProvider: mockPodStatusProvider{},
}
containerMap.Add("", "", containerID)
err := mgr.RemoveContainer(containerID)
if err != nil {
t.Errorf("CPU Manager RemoveContainer() error. expected error to be nil but got: %v", err)
}
mgr = &manager{
policy: &mockPolicy{
err: fmt.Errorf("fake error"),
},
state: state.NewMemoryState(),
containerRuntime: mockRuntimeService{},
containerMap: containerMap,
activePods: func() []*v1.Pod { return nil },
podStatusProvider: mockPodStatusProvider{},
}
containerMap.Add("", "", containerID)
err = mgr.RemoveContainer(containerID)
if !reflect.DeepEqual(err, fmt.Errorf("fake error")) {
t.Errorf("CPU Manager RemoveContainer() error. expected error: fake error but got: %v", err)
}
}
func TestReconcileState(t *testing.T) {
testCases := []struct {
description string
activePods []*v1.Pod
pspPS v1.PodStatus
pspFound bool
stAssignments state.ContainerCPUAssignments
stDefaultCPUSet cpuset.CPUSet
updateErr error
expectSucceededContainerName string
expectFailedContainerName string
}{
{
description: "cpu manager reconclie - no error",
activePods: []*v1.Pod{
{
ObjectMeta: metav1.ObjectMeta{
Name: "fakePodName",
UID: "fakePodUID",
},
Spec: v1.PodSpec{
Containers: []v1.Container{
{
Name: "fakeContainerName",
},
},
},
},
},
pspPS: v1.PodStatus{
ContainerStatuses: []v1.ContainerStatus{
{
Name: "fakeContainerName",
ContainerID: "docker://fakeContainerID",
State: v1.ContainerState{
Running: &v1.ContainerStateRunning{},
},
},
},
},
pspFound: true,
stAssignments: state.ContainerCPUAssignments{
"fakePodUID": map[string]cpuset.CPUSet{
"fakeContainerName": cpuset.NewCPUSet(1, 2),
},
},
stDefaultCPUSet: cpuset.NewCPUSet(3, 4, 5, 6, 7),
updateErr: nil,
expectSucceededContainerName: "fakeContainerName",
expectFailedContainerName: "",
},
{
description: "cpu manager reconcile init container - no error",
activePods: []*v1.Pod{
{
ObjectMeta: metav1.ObjectMeta{
Name: "fakePodName",
UID: "fakePodUID",
},
Spec: v1.PodSpec{
InitContainers: []v1.Container{
{
Name: "fakeContainerName",
},
},
},
},
},
pspPS: v1.PodStatus{
InitContainerStatuses: []v1.ContainerStatus{
{
Name: "fakeContainerName",
ContainerID: "docker://fakeContainerID",
State: v1.ContainerState{
Running: &v1.ContainerStateRunning{},
},
},
},
},
pspFound: true,
stAssignments: state.ContainerCPUAssignments{
"fakePodUID": map[string]cpuset.CPUSet{
"fakeContainerName": cpuset.NewCPUSet(1, 2),
},
},
stDefaultCPUSet: cpuset.NewCPUSet(3, 4, 5, 6, 7),
updateErr: nil,
expectSucceededContainerName: "fakeContainerName",
expectFailedContainerName: "",
},
{
description: "cpu manager reconcile - pod status not found",
activePods: []*v1.Pod{
{
ObjectMeta: metav1.ObjectMeta{
Name: "fakePodName",
UID: "fakePodUID",
},
Spec: v1.PodSpec{
Containers: []v1.Container{
{
Name: "fakeContainerName",
},
},
},
},
},
pspPS: v1.PodStatus{},
pspFound: false,
stAssignments: state.ContainerCPUAssignments{},
stDefaultCPUSet: cpuset.NewCPUSet(),
updateErr: nil,
expectSucceededContainerName: "",
expectFailedContainerName: "",
},
{
description: "cpu manager reconcile - container state not found",
activePods: []*v1.Pod{
{
ObjectMeta: metav1.ObjectMeta{
Name: "fakePodName",
UID: "fakePodUID",
},
Spec: v1.PodSpec{
Containers: []v1.Container{
{
Name: "fakeContainerName",
},
},
},
},
},
pspPS: v1.PodStatus{
ContainerStatuses: []v1.ContainerStatus{
{
Name: "fakeContainerName1",
ContainerID: "docker://fakeContainerID",
},
},
},
pspFound: true,
stAssignments: state.ContainerCPUAssignments{},
stDefaultCPUSet: cpuset.NewCPUSet(),
updateErr: nil,
expectSucceededContainerName: "",
expectFailedContainerName: "fakeContainerName",
},
{
description: "cpu manager reconclie - cpuset is empty",
activePods: []*v1.Pod{
{
ObjectMeta: metav1.ObjectMeta{
Name: "fakePodName",
UID: "fakePodUID",
},
Spec: v1.PodSpec{
Containers: []v1.Container{
{
Name: "fakeContainerName",
},
},
},
},
},
pspPS: v1.PodStatus{
ContainerStatuses: []v1.ContainerStatus{
{
Name: "fakeContainerName",
ContainerID: "docker://fakeContainerID",
State: v1.ContainerState{
Running: &v1.ContainerStateRunning{},
},
},
},
},
pspFound: true,
stAssignments: state.ContainerCPUAssignments{
"fakePodUID": map[string]cpuset.CPUSet{
"fakeContainerName": cpuset.NewCPUSet(),
},
},
stDefaultCPUSet: cpuset.NewCPUSet(1, 2, 3, 4, 5, 6, 7),
updateErr: nil,
expectSucceededContainerName: "",
expectFailedContainerName: "fakeContainerName",
},
{
description: "cpu manager reconclie - container update error",
activePods: []*v1.Pod{
{
ObjectMeta: metav1.ObjectMeta{
Name: "fakePodName",
UID: "fakePodUID",
},
Spec: v1.PodSpec{
Containers: []v1.Container{
{
Name: "fakeContainerName",
},
},
},
},
},
pspPS: v1.PodStatus{
ContainerStatuses: []v1.ContainerStatus{
{
Name: "fakeContainerName",
ContainerID: "docker://fakeContainerID",
State: v1.ContainerState{
Running: &v1.ContainerStateRunning{},
},
},
},
},
pspFound: true,
stAssignments: state.ContainerCPUAssignments{
"fakePodUID": map[string]cpuset.CPUSet{
"fakeContainerName": cpuset.NewCPUSet(1, 2),
},
},
stDefaultCPUSet: cpuset.NewCPUSet(3, 4, 5, 6, 7),
updateErr: fmt.Errorf("fake container update error"),
expectSucceededContainerName: "",
expectFailedContainerName: "fakeContainerName",
},
}
for _, testCase := range testCases {
mgr := &manager{
policy: &mockPolicy{
err: nil,
},
state: &mockState{
assignments: testCase.stAssignments,
defaultCPUSet: testCase.stDefaultCPUSet,
},
lastUpdateState: state.NewMemoryState(),
containerRuntime: mockRuntimeService{
err: testCase.updateErr,
},
containerMap: containermap.NewContainerMap(),
activePods: func() []*v1.Pod {
return testCase.activePods
},
podStatusProvider: mockPodStatusProvider{
podStatus: testCase.pspPS,
found: testCase.pspFound,
},
}
mgr.sourcesReady = &sourcesReadyStub{}
success, failure := mgr.reconcileState()
if testCase.expectSucceededContainerName != "" {
// Search succeeded reconciled containers for the supplied name.
foundSucceededContainer := false
for _, reconciled := range success {
if reconciled.containerName == testCase.expectSucceededContainerName {
foundSucceededContainer = true
break
}
}
if !foundSucceededContainer {
t.Errorf("%v", testCase.description)
t.Errorf("Expected reconciliation success for container: %s", testCase.expectSucceededContainerName)
}
}
if testCase.expectFailedContainerName != "" {
// Search failed reconciled containers for the supplied name.
foundFailedContainer := false
for _, reconciled := range failure {
if reconciled.containerName == testCase.expectFailedContainerName {
foundFailedContainer = true
break
}
}
if !foundFailedContainer {
t.Errorf("%v", testCase.description)
t.Errorf("Expected reconciliation failure for container: %s", testCase.expectFailedContainerName)
}
}
}
}
// above test cases are without kubelet --reserved-cpus cmd option
// the following tests are with --reserved-cpus configured
func TestCPUManagerAddWithResvList(t *testing.T) {
testPolicy, _ := NewStaticPolicy(
&topology.CPUTopology{
NumCPUs: 4,
NumSockets: 1,
NumCores: 4,
CPUDetails: map[int]topology.CPUInfo{
0: {CoreID: 0, SocketID: 0},
1: {CoreID: 1, SocketID: 0},
2: {CoreID: 2, SocketID: 0},
3: {CoreID: 3, SocketID: 0},
},
},
1,
cpuset.NewCPUSet(0),
topologymanager.NewFakeManager(),
nil)
testCases := []struct {
description string
updateErr error
policy Policy
expCPUSet cpuset.CPUSet
expAllocateErr error
expAddContainerErr error
}{
{
description: "cpu manager add - no error",
updateErr: nil,
policy: testPolicy,
expCPUSet: cpuset.NewCPUSet(0, 3),
expAllocateErr: nil,
expAddContainerErr: nil,
},
}
for _, testCase := range testCases {
mgr := &manager{
policy: testCase.policy,
state: &mockState{
assignments: state.ContainerCPUAssignments{},
defaultCPUSet: cpuset.NewCPUSet(0, 1, 2, 3),
},
lastUpdateState: state.NewMemoryState(),
containerRuntime: mockRuntimeService{
err: testCase.updateErr,
},
containerMap: containermap.NewContainerMap(),
podStatusProvider: mockPodStatusProvider{},
sourcesReady: &sourcesReadyStub{},
}
pod := makePod("fakePod", "fakeContainer", "2", "2")
container := &pod.Spec.Containers[0]
mgr.activePods = func() []*v1.Pod { return []*v1.Pod{pod} }
err := mgr.Allocate(pod, container)
if !reflect.DeepEqual(err, testCase.expAllocateErr) {
t.Errorf("CPU Manager Allocate() error (%v). expected error: %v but got: %v",
testCase.description, testCase.expAllocateErr, err)
}
mgr.AddContainer(pod, container, "fakeID")
_, _, err = mgr.containerMap.GetContainerRef("fakeID")
if !reflect.DeepEqual(err, testCase.expAddContainerErr) {
t.Errorf("CPU Manager AddContainer() error (%v). expected error: %v but got: %v",
testCase.description, testCase.expAddContainerErr, err)
}
if !testCase.expCPUSet.Equals(mgr.state.GetDefaultCPUSet()) {
t.Errorf("CPU Manager AddContainer() error (%v). expected cpuset: %v but got: %v",
testCase.description, testCase.expCPUSet, mgr.state.GetDefaultCPUSet())
}
}
}
func TestCPUManagerHandlePolicyOptions(t *testing.T) {
testCases := []struct {
description string
cpuPolicyName string
cpuPolicyOptions map[string]string
expectedError error
}{
{
description: "options to none policy",
cpuPolicyName: "none",
cpuPolicyOptions: map[string]string{
FullPCPUsOnlyOption: "true",
},
expectedError: fmt.Errorf("received unsupported options"),
},
}
// any correct realistic topology is fine. We pick a simple one.
mockedMachineInfo := cadvisorapi.MachineInfo{
NumCores: 4,
Topology: []cadvisorapi.Node{
{
Cores: []cadvisorapi.Core{
{
Id: 0,
Threads: []int{0},
},
{
Id: 1,
Threads: []int{1},
},
{
Id: 2,
Threads: []int{2},
},
{
Id: 3,
Threads: []int{3},
},
},
},
},
}
for _, testCase := range testCases {
t.Run(testCase.description, func(t *testing.T) {
machineInfo := &mockedMachineInfo
nodeAllocatableReservation := v1.ResourceList{}
sDir, err := ioutil.TempDir("/tmp/", "cpu_manager_test")
if err != nil {
t.Errorf("cannot create state file: %s", err.Error())
}
defer os.RemoveAll(sDir)
_, err = NewManager(testCase.cpuPolicyName, testCase.cpuPolicyOptions, 5*time.Second, machineInfo, cpuset.NewCPUSet(), nodeAllocatableReservation, sDir, topologymanager.NewFakeManager())
if err == nil {
t.Errorf("Expected error, but NewManager succeeded")
}
if !strings.Contains(err.Error(), testCase.expectedError.Error()) {
t.Errorf("Unexpected error message. Have: %s wants %s", err.Error(), testCase.expectedError.Error())
}
})
}
}
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