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This commit is contained in:
Serguei Bezverkhi
2018-03-06 17:33:18 -05:00
parent 4b3ebc171b
commit e9033989a0
5854 changed files with 248382 additions and 119809 deletions
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5
vendor/k8s.io/kubernetes/pkg/controller/podautoscaler/BUILD generated vendored
View File

@ -55,8 +55,7 @@ go_test(
"legacy_replica_calculator_test.go",
"replica_calculator_test.go",
],
importpath = "k8s.io/kubernetes/pkg/controller/podautoscaler",
library = ":go_default_library",
embed = [":go_default_library"],
deps = [
"//pkg/api/legacyscheme:go_default_library",
"//pkg/apis/autoscaling:go_default_library",
@ -83,10 +82,12 @@ go_test(
"//vendor/k8s.io/client-go/testing:go_default_library",
"//vendor/k8s.io/heapster/metrics/api/v1/types:go_default_library",
"//vendor/k8s.io/metrics/pkg/apis/custom_metrics/v1beta1:go_default_library",
"//vendor/k8s.io/metrics/pkg/apis/external_metrics/v1beta1:go_default_library",
"//vendor/k8s.io/metrics/pkg/apis/metrics/v1alpha1:go_default_library",
"//vendor/k8s.io/metrics/pkg/apis/metrics/v1beta1:go_default_library",
"//vendor/k8s.io/metrics/pkg/client/clientset_generated/clientset/fake:go_default_library",
"//vendor/k8s.io/metrics/pkg/client/custom_metrics/fake:go_default_library",
"//vendor/k8s.io/metrics/pkg/client/external_metrics/fake:go_default_library",
],
)

41
vendor/k8s.io/kubernetes/pkg/controller/podautoscaler/horizontal.go generated vendored
View File

@ -299,6 +299,45 @@ func (a *HorizontalController) computeReplicasForMetrics(hpa *autoscalingv2.Hori
},
}
}
case autoscalingv2.ExternalMetricSourceType:
if metricSpec.External.TargetAverageValue != nil {
replicaCountProposal, utilizationProposal, timestampProposal, err = a.replicaCalc.GetExternalPerPodMetricReplicas(currentReplicas, metricSpec.External.TargetAverageValue.MilliValue(), metricSpec.External.MetricName, hpa.Namespace, metricSpec.External.MetricSelector)
if err != nil {
a.eventRecorder.Event(hpa, v1.EventTypeWarning, "FailedGetExternalMetric", err.Error())
setCondition(hpa, autoscalingv2.ScalingActive, v1.ConditionFalse, "FailedGetExternalMetric", "the HPA was unable to compute the replica count: %v", err)
return 0, "", nil, time.Time{}, fmt.Errorf("failed to get %s external metric: %v", metricSpec.External.MetricName, err)
}
metricNameProposal = fmt.Sprintf("external metric %s(%+v)", metricSpec.External.MetricName, metricSpec.External.MetricSelector)
statuses[i] = autoscalingv2.MetricStatus{
Type: autoscalingv2.ExternalMetricSourceType,
External: &autoscalingv2.ExternalMetricStatus{
MetricSelector: metricSpec.External.MetricSelector,
MetricName: metricSpec.External.MetricName,
CurrentAverageValue: resource.NewMilliQuantity(utilizationProposal, resource.DecimalSI),
},
}
} else if metricSpec.External.TargetValue != nil {
replicaCountProposal, utilizationProposal, timestampProposal, err = a.replicaCalc.GetExternalMetricReplicas(currentReplicas, metricSpec.External.TargetValue.MilliValue(), metricSpec.External.MetricName, hpa.Namespace, metricSpec.External.MetricSelector)
if err != nil {
a.eventRecorder.Event(hpa, v1.EventTypeWarning, "FailedGetExternalMetric", err.Error())
setCondition(hpa, autoscalingv2.ScalingActive, v1.ConditionFalse, "FailedGetExternalMetric", "the HPA was unable to compute the replica count: %v", err)
return 0, "", nil, time.Time{}, fmt.Errorf("failed to get external metric %s: %v", metricSpec.External.MetricName, err)
}
metricNameProposal = fmt.Sprintf("external metric %s(%+v)", metricSpec.External.MetricName, metricSpec.External.MetricSelector)
statuses[i] = autoscalingv2.MetricStatus{
Type: autoscalingv2.ExternalMetricSourceType,
External: &autoscalingv2.ExternalMetricStatus{
MetricSelector: metricSpec.External.MetricSelector,
MetricName: metricSpec.External.MetricName,
CurrentValue: *resource.NewMilliQuantity(utilizationProposal, resource.DecimalSI),
},
}
} else {
errMsg := "invalid external metric source: neither a value target nor an average value target was set"
a.eventRecorder.Event(hpa, v1.EventTypeWarning, "FailedGetExternalMetric", errMsg)
setCondition(hpa, autoscalingv2.ScalingActive, v1.ConditionFalse, "FailedGetExternalMetric", "the HPA was unable to compute the replica count: %v", err)
return 0, "", nil, time.Time{}, fmt.Errorf(errMsg)
}
default:
errMsg := fmt.Sprintf("unknown metric source type %q", string(metricSpec.Type))
a.eventRecorder.Event(hpa, v1.EventTypeWarning, "InvalidMetricSourceType", errMsg)
@ -313,7 +352,7 @@ func (a *HorizontalController) computeReplicasForMetrics(hpa *autoscalingv2.Hori
}
}
setCondition(hpa, autoscalingv2.ScalingActive, v1.ConditionTrue, "ValidMetricFound", "the HPA was able to succesfully calculate a replica count from %s", metric)
setCondition(hpa, autoscalingv2.ScalingActive, v1.ConditionTrue, "ValidMetricFound", "the HPA was able to successfully calculate a replica count from %s", metric)
return replicas, metric, statuses, timestamp, nil
}

187
vendor/k8s.io/kubernetes/pkg/controller/podautoscaler/horizontal_test.go generated vendored
View File

@ -35,7 +35,6 @@ import (
"k8s.io/apimachinery/pkg/watch"
"k8s.io/client-go/informers"
"k8s.io/client-go/kubernetes/fake"
clientfake "k8s.io/client-go/kubernetes/fake"
scalefake "k8s.io/client-go/scale/fake"
core "k8s.io/client-go/testing"
"k8s.io/kubernetes/pkg/api/legacyscheme"
@ -43,9 +42,11 @@ import (
"k8s.io/kubernetes/pkg/controller"
"k8s.io/kubernetes/pkg/controller/podautoscaler/metrics"
cmapi "k8s.io/metrics/pkg/apis/custom_metrics/v1beta1"
emapi "k8s.io/metrics/pkg/apis/external_metrics/v1beta1"
metricsapi "k8s.io/metrics/pkg/apis/metrics/v1beta1"
metricsfake "k8s.io/metrics/pkg/client/clientset_generated/clientset/fake"
cmfake "k8s.io/metrics/pkg/client/custom_metrics/fake"
emfake "k8s.io/metrics/pkg/client/external_metrics/fake"
"github.com/stretchr/testify/assert"
@ -146,7 +147,7 @@ func init() {
scaleUpLimitFactor = 8
}
func (tc *testCase) prepareTestClient(t *testing.T) (*fake.Clientset, *metricsfake.Clientset, *cmfake.FakeCustomMetricsClient, *scalefake.FakeScaleClient) {
func (tc *testCase) prepareTestClient(t *testing.T) (*fake.Clientset, *metricsfake.Clientset, *cmfake.FakeCustomMetricsClient, *emfake.FakeExternalMetricsClient, *scalefake.FakeScaleClient) {
namespace := "test-namespace"
hpaName := "test-hpa"
podNamePrefix := "test-pod"
@ -524,7 +525,34 @@ func (tc *testCase) prepareTestClient(t *testing.T) (*fake.Clientset, *metricsfa
return true, metrics, nil
})
return fakeClient, fakeMetricsClient, fakeCMClient, fakeScaleClient
fakeEMClient := &emfake.FakeExternalMetricsClient{}
fakeEMClient.AddReactor("list", "*", func(action core.Action) (handled bool, ret runtime.Object, err error) {
tc.Lock()
defer tc.Unlock()
listAction, wasList := action.(core.ListAction)
if !wasList {
return true, nil, fmt.Errorf("expected a list action, got %v instead", action)
}
metrics := &emapi.ExternalMetricValueList{}
assert.Equal(t, "qps", listAction.GetResource().Resource, "the metric name requested should have been qps, as specified in the metric spec")
for _, level := range tc.reportedLevels {
metric := emapi.ExternalMetricValue{
Timestamp: metav1.Time{Time: time.Now()},
MetricName: "qps",
Value: *resource.NewMilliQuantity(int64(level), resource.DecimalSI),
}
metrics.Items = append(metrics.Items, metric)
}
return true, metrics, nil
})
return fakeClient, fakeMetricsClient, fakeCMClient, fakeEMClient, fakeScaleClient
}
func (tc *testCase) verifyResults(t *testing.T) {
@ -539,7 +567,7 @@ func (tc *testCase) verifyResults(t *testing.T) {
}
func (tc *testCase) setupController(t *testing.T) (*HorizontalController, informers.SharedInformerFactory) {
testClient, testMetricsClient, testCMClient, testScaleClient := tc.prepareTestClient(t)
testClient, testMetricsClient, testCMClient, testEMClient, testScaleClient := tc.prepareTestClient(t)
if tc.testClient != nil {
testClient = tc.testClient
}
@ -555,9 +583,10 @@ func (tc *testCase) setupController(t *testing.T) (*HorizontalController, inform
metricsClient := metrics.NewRESTMetricsClient(
testMetricsClient.MetricsV1beta1(),
testCMClient,
testEMClient,
)
eventClient := &clientfake.Clientset{}
eventClient := &fake.Clientset{}
eventClient.AddReactor("create", "events", func(action core.Action) (handled bool, ret runtime.Object, err error) {
tc.Lock()
defer tc.Unlock()
@ -823,6 +852,48 @@ func TestScaleUpCMObject(t *testing.T) {
tc.runTest(t)
}
func TestScaleUpCMExternal(t *testing.T) {
tc := testCase{
minReplicas: 2,
maxReplicas: 6,
initialReplicas: 3,
desiredReplicas: 4,
metricsTarget: []autoscalingv2.MetricSpec{
{
Type: autoscalingv2.ExternalMetricSourceType,
External: &autoscalingv2.ExternalMetricSource{
MetricSelector: &metav1.LabelSelector{},
MetricName: "qps",
TargetValue: resource.NewMilliQuantity(6666, resource.DecimalSI),
},
},
},
reportedLevels: []uint64{8600},
}
tc.runTest(t)
}
func TestScaleUpPerPodCMExternal(t *testing.T) {
tc := testCase{
minReplicas: 2,
maxReplicas: 6,
initialReplicas: 3,
desiredReplicas: 4,
metricsTarget: []autoscalingv2.MetricSpec{
{
Type: autoscalingv2.ExternalMetricSourceType,
External: &autoscalingv2.ExternalMetricSource{
MetricSelector: &metav1.LabelSelector{},
MetricName: "qps",
TargetAverageValue: resource.NewMilliQuantity(2222, resource.DecimalSI),
},
},
},
reportedLevels: []uint64{8600},
}
tc.runTest(t)
}
func TestScaleDown(t *testing.T) {
tc := testCase{
minReplicas: 2,
@ -887,6 +958,48 @@ func TestScaleDownCMObject(t *testing.T) {
tc.runTest(t)
}
func TestScaleDownCMExternal(t *testing.T) {
tc := testCase{
minReplicas: 2,
maxReplicas: 6,
initialReplicas: 5,
desiredReplicas: 3,
metricsTarget: []autoscalingv2.MetricSpec{
{
Type: autoscalingv2.ExternalMetricSourceType,
External: &autoscalingv2.ExternalMetricSource{
MetricSelector: &metav1.LabelSelector{},
MetricName: "qps",
TargetValue: resource.NewMilliQuantity(14400, resource.DecimalSI),
},
},
},
reportedLevels: []uint64{8600},
}
tc.runTest(t)
}
func TestScaleDownPerPodCMExternal(t *testing.T) {
tc := testCase{
minReplicas: 2,
maxReplicas: 6,
initialReplicas: 5,
desiredReplicas: 3,
metricsTarget: []autoscalingv2.MetricSpec{
{
Type: autoscalingv2.ExternalMetricSourceType,
External: &autoscalingv2.ExternalMetricSource{
MetricSelector: &metav1.LabelSelector{},
MetricName: "qps",
TargetAverageValue: resource.NewMilliQuantity(3000, resource.DecimalSI),
},
},
},
reportedLevels: []uint64{8600},
}
tc.runTest(t)
}
func TestScaleDownIgnoresUnreadyPods(t *testing.T) {
tc := testCase{
minReplicas: 2,
@ -980,6 +1093,58 @@ func TestToleranceCMObject(t *testing.T) {
tc.runTest(t)
}
func TestToleranceCMExternal(t *testing.T) {
tc := testCase{
minReplicas: 2,
maxReplicas: 6,
initialReplicas: 4,
desiredReplicas: 4,
metricsTarget: []autoscalingv2.MetricSpec{
{
Type: autoscalingv2.ExternalMetricSourceType,
External: &autoscalingv2.ExternalMetricSource{
MetricSelector: &metav1.LabelSelector{},
MetricName: "qps",
TargetValue: resource.NewMilliQuantity(8666, resource.DecimalSI),
},
},
},
reportedLevels: []uint64{8600},
expectedConditions: statusOkWithOverrides(autoscalingv2.HorizontalPodAutoscalerCondition{
Type: autoscalingv2.AbleToScale,
Status: v1.ConditionTrue,
Reason: "ReadyForNewScale",
}),
}
tc.runTest(t)
}
func TestTolerancePerPodCMExternal(t *testing.T) {
tc := testCase{
minReplicas: 2,
maxReplicas: 6,
initialReplicas: 4,
desiredReplicas: 4,
metricsTarget: []autoscalingv2.MetricSpec{
{
Type: autoscalingv2.ExternalMetricSourceType,
External: &autoscalingv2.ExternalMetricSource{
MetricSelector: &metav1.LabelSelector{},
MetricName: "qps",
TargetAverageValue: resource.NewMilliQuantity(2200, resource.DecimalSI),
},
},
},
reportedLevels: []uint64{8600},
expectedConditions: statusOkWithOverrides(autoscalingv2.HorizontalPodAutoscalerCondition{
Type: autoscalingv2.AbleToScale,
Status: v1.ConditionTrue,
Reason: "ReadyForNewScale",
}),
}
tc.runTest(t)
}
func TestMinReplicas(t *testing.T) {
tc := testCase{
minReplicas: 2,
@ -1269,7 +1434,7 @@ func TestConditionInvalidSelectorMissing(t *testing.T) {
},
}
_, _, _, testScaleClient := tc.prepareTestClient(t)
_, _, _, _, testScaleClient := tc.prepareTestClient(t)
tc.testScaleClient = testScaleClient
testScaleClient.PrependReactor("get", "replicationcontrollers", func(action core.Action) (handled bool, ret runtime.Object, err error) {
@ -1314,7 +1479,7 @@ func TestConditionInvalidSelectorUnparsable(t *testing.T) {
},
}
_, _, _, testScaleClient := tc.prepareTestClient(t)
_, _, _, _, testScaleClient := tc.prepareTestClient(t)
tc.testScaleClient = testScaleClient
testScaleClient.PrependReactor("get", "replicationcontrollers", func(action core.Action) (handled bool, ret runtime.Object, err error) {
@ -1375,7 +1540,7 @@ func TestConditionFailedGetMetrics(t *testing.T) {
reportedCPURequests: []resource.Quantity{resource.MustParse("0.1"), resource.MustParse("0.1"), resource.MustParse("0.1")},
useMetricsAPI: true,
}
_, testMetricsClient, testCMClient, _ := tc.prepareTestClient(t)
_, testMetricsClient, testCMClient, _, _ := tc.prepareTestClient(t)
tc.testMetricsClient = testMetricsClient
tc.testCMClient = testCMClient
@ -1448,7 +1613,7 @@ func TestConditionFailedGetScale(t *testing.T) {
},
}
_, _, _, testScaleClient := tc.prepareTestClient(t)
_, _, _, _, testScaleClient := tc.prepareTestClient(t)
tc.testScaleClient = testScaleClient
testScaleClient.PrependReactor("get", "replicationcontrollers", func(action core.Action) (handled bool, ret runtime.Object, err error) {
@ -1475,7 +1640,7 @@ func TestConditionFailedUpdateScale(t *testing.T) {
}),
}
_, _, _, testScaleClient := tc.prepareTestClient(t)
_, _, _, _, testScaleClient := tc.prepareTestClient(t)
tc.testScaleClient = testScaleClient
testScaleClient.PrependReactor("update", "replicationcontrollers", func(action core.Action) (handled bool, ret runtime.Object, err error) {
@ -1661,7 +1826,7 @@ func TestAvoidUncessaryUpdates(t *testing.T) {
reportedPodReadiness: []v1.ConditionStatus{v1.ConditionTrue, v1.ConditionFalse, v1.ConditionFalse},
useMetricsAPI: true,
}
testClient, _, _, _ := tc.prepareTestClient(t)
testClient, _, _, _, _ := tc.prepareTestClient(t)
tc.testClient = testClient
var savedHPA *autoscalingv1.HorizontalPodAutoscaler
testClient.PrependReactor("list", "horizontalpodautoscalers", func(action core.Action) (handled bool, ret runtime.Object, err error) {

3
vendor/k8s.io/kubernetes/pkg/controller/podautoscaler/legacy_horizontal_test.go generated vendored
View File

@ -37,7 +37,6 @@ import (
"k8s.io/apimachinery/pkg/watch"
"k8s.io/client-go/informers"
"k8s.io/client-go/kubernetes/fake"
clientfake "k8s.io/client-go/kubernetes/fake"
restclient "k8s.io/client-go/rest"
scalefake "k8s.io/client-go/scale/fake"
core "k8s.io/client-go/testing"
@ -461,7 +460,7 @@ func (tc *legacyTestCase) runTest(t *testing.T) {
testClient, testScaleClient := tc.prepareTestClient(t)
metricsClient := metrics.NewHeapsterMetricsClient(testClient, metrics.DefaultHeapsterNamespace, metrics.DefaultHeapsterScheme, metrics.DefaultHeapsterService, metrics.DefaultHeapsterPort)
eventClient := &clientfake.Clientset{}
eventClient := &fake.Clientset{}
eventClient.AddReactor("*", "events", func(action core.Action) (handled bool, ret runtime.Object, err error) {
tc.Lock()
defer tc.Unlock()

7
vendor/k8s.io/kubernetes/pkg/controller/podautoscaler/metrics/BUILD generated vendored
View File

@ -29,6 +29,7 @@ go_library(
"//vendor/k8s.io/metrics/pkg/apis/metrics/v1alpha1:go_default_library",
"//vendor/k8s.io/metrics/pkg/client/clientset_generated/clientset/typed/metrics/v1beta1:go_default_library",
"//vendor/k8s.io/metrics/pkg/client/custom_metrics:go_default_library",
"//vendor/k8s.io/metrics/pkg/client/external_metrics:go_default_library",
],
)
@ -37,9 +38,9 @@ go_test(
srcs = [
"legacy_metrics_client_test.go",
"rest_metrics_client_test.go",
"utilization_test.go",
],
importpath = "k8s.io/kubernetes/pkg/controller/podautoscaler/metrics",
library = ":go_default_library",
embed = [":go_default_library"],
deps = [
"//pkg/api/legacyscheme:go_default_library",
"//pkg/apis/extensions/install:go_default_library",
@ -56,10 +57,12 @@ go_test(
"//vendor/k8s.io/client-go/testing:go_default_library",
"//vendor/k8s.io/heapster/metrics/api/v1/types:go_default_library",
"//vendor/k8s.io/metrics/pkg/apis/custom_metrics/v1beta1:go_default_library",
"//vendor/k8s.io/metrics/pkg/apis/external_metrics/v1beta1:go_default_library",
"//vendor/k8s.io/metrics/pkg/apis/metrics/v1alpha1:go_default_library",
"//vendor/k8s.io/metrics/pkg/apis/metrics/v1beta1:go_default_library",
"//vendor/k8s.io/metrics/pkg/client/clientset_generated/clientset/fake:go_default_library",
"//vendor/k8s.io/metrics/pkg/client/custom_metrics/fake:go_default_library",
"//vendor/k8s.io/metrics/pkg/client/external_metrics/fake:go_default_library",
],
)

4
vendor/k8s.io/kubernetes/pkg/controller/podautoscaler/metrics/interfaces.go generated vendored
View File

@ -42,4 +42,8 @@ type MetricsClient interface {
// GetObjectMetric gets the given metric (and an associated timestamp) for the given
// object in the given namespace
GetObjectMetric(metricName string, namespace string, objectRef *autoscaling.CrossVersionObjectReference) (int64, time.Time, error)
// GetExternalMetric gets all the values of a given external metric
// that match the specified selector.
GetExternalMetric(metricName string, namespace string, selector labels.Selector) ([]int64, time.Time, error)
}

7
vendor/k8s.io/kubernetes/pkg/controller/podautoscaler/metrics/legacy_metrics_client.go generated vendored
View File

@ -28,7 +28,6 @@ import (
autoscaling "k8s.io/api/autoscaling/v2beta1"
"k8s.io/api/core/v1"
clientgov1 "k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/labels"
clientset "k8s.io/client-go/kubernetes"
@ -91,7 +90,7 @@ func (h *HeapsterMetricsClient) GetResourceMetric(resource v1.ResourceName, name
podSum := int64(0)
missing := len(m.Containers) == 0
for _, c := range m.Containers {
resValue, found := c.Usage[clientgov1.ResourceName(resource)]
resValue, found := c.Usage[v1.ResourceName(resource)]
if !found {
missing = true
glog.V(2).Infof("missing resource metric %v for container %s in pod %s/%s", resource, c.Name, namespace, m.Name)
@ -178,6 +177,10 @@ func (h *HeapsterMetricsClient) GetObjectMetric(metricName string, namespace str
return 0, time.Time{}, fmt.Errorf("object metrics are not yet supported")
}
func (h *HeapsterMetricsClient) GetExternalMetric(metricName, namespace string, selector labels.Selector) ([]int64, time.Time, error) {
return nil, time.Time{}, fmt.Errorf("external metrics aren't supported")
}
func collapseTimeSamples(metrics heapster.MetricResult, duration time.Duration) (int64, time.Time, bool) {
floatSum := float64(0)
intSum := int64(0)

39
vendor/k8s.io/kubernetes/pkg/controller/podautoscaler/metrics/rest_metrics_client.go generated vendored
View File

@ -30,12 +30,14 @@ import (
customapi "k8s.io/metrics/pkg/apis/custom_metrics/v1beta1"
resourceclient "k8s.io/metrics/pkg/client/clientset_generated/clientset/typed/metrics/v1beta1"
customclient "k8s.io/metrics/pkg/client/custom_metrics"
externalclient "k8s.io/metrics/pkg/client/external_metrics"
)
func NewRESTMetricsClient(resourceClient resourceclient.PodMetricsesGetter, customClient customclient.CustomMetricsClient) MetricsClient {
func NewRESTMetricsClient(resourceClient resourceclient.PodMetricsesGetter, customClient customclient.CustomMetricsClient, externalClient externalclient.ExternalMetricsClient) MetricsClient {
return &restMetricsClient{
&resourceMetricsClient{resourceClient},
&customMetricsClient{customClient},
&externalMetricsClient{externalClient},
}
}
@ -45,6 +47,7 @@ func NewRESTMetricsClient(resourceClient resourceclient.PodMetricsesGetter, cust
type restMetricsClient struct {
*resourceMetricsClient
*customMetricsClient
*externalMetricsClient
}
// resourceMetricsClient implements the resource-metrics-related parts of MetricsClient,
@ -58,11 +61,11 @@ type resourceMetricsClient struct {
func (c *resourceMetricsClient) GetResourceMetric(resource v1.ResourceName, namespace string, selector labels.Selector) (PodMetricsInfo, time.Time, error) {
metrics, err := c.client.PodMetricses(namespace).List(metav1.ListOptions{LabelSelector: selector.String()})
if err != nil {
return nil, time.Time{}, fmt.Errorf("unable to fetch metrics from API: %v", err)
return nil, time.Time{}, fmt.Errorf("unable to fetch metrics from resource metrics API: %v", err)
}
if len(metrics.Items) == 0 {
return nil, time.Time{}, fmt.Errorf("no metrics returned from heapster")
return nil, time.Time{}, fmt.Errorf("no metrics returned from resource metrics API")
}
res := make(PodMetricsInfo, len(metrics.Items))
@ -101,7 +104,7 @@ type customMetricsClient struct {
func (c *customMetricsClient) GetRawMetric(metricName string, namespace string, selector labels.Selector) (PodMetricsInfo, time.Time, error) {
metrics, err := c.client.NamespacedMetrics(namespace).GetForObjects(schema.GroupKind{Kind: "Pod"}, selector, metricName)
if err != nil {
return nil, time.Time{}, fmt.Errorf("unable to fetch metrics from API: %v", err)
return nil, time.Time{}, fmt.Errorf("unable to fetch metrics from custom metrics API: %v", err)
}
if len(metrics.Items) == 0 {
@ -134,8 +137,34 @@ func (c *customMetricsClient) GetObjectMetric(metricName string, namespace strin
}
if err != nil {
return 0, time.Time{}, fmt.Errorf("unable to fetch metrics from API: %v", err)
return 0, time.Time{}, fmt.Errorf("unable to fetch metrics from custom metrics API: %v", err)
}
return metricValue.Value.MilliValue(), metricValue.Timestamp.Time, nil
}
// externalMetricsClient implenets the external metrics related parts of MetricsClient,
// using data from the external metrics API.
type externalMetricsClient struct {
client externalclient.ExternalMetricsClient
}
// GetExternalMetric gets all the values of a given external metric
// that match the specified selector.
func (c *externalMetricsClient) GetExternalMetric(metricName, namespace string, selector labels.Selector) ([]int64, time.Time, error) {
metrics, err := c.client.NamespacedMetrics(namespace).List(metricName, selector)
if err != nil {
return []int64{}, time.Time{}, fmt.Errorf("unable to fetch metrics from external metrics API: %v", err)
}
if len(metrics.Items) == 0 {
return nil, time.Time{}, fmt.Errorf("no metrics returned from external metrics API")
}
res := make([]int64, 0)
for _, m := range metrics.Items {
res = append(res, m.Value.MilliValue())
}
timestamp := metrics.Items[0].Timestamp.Time
return res, timestamp, nil
}

108
vendor/k8s.io/kubernetes/pkg/controller/podautoscaler/metrics/rest_metrics_client_test.go generated vendored
View File

@ -23,7 +23,6 @@ import (
autoscalingapi "k8s.io/api/autoscaling/v2beta1"
"k8s.io/api/core/v1"
kv1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/api/resource"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/labels"
@ -33,9 +32,11 @@ import (
"k8s.io/kubernetes/pkg/api/legacyscheme"
_ "k8s.io/kubernetes/pkg/apis/extensions/install"
cmapi "k8s.io/metrics/pkg/apis/custom_metrics/v1beta1"
emapi "k8s.io/metrics/pkg/apis/external_metrics/v1beta1"
metricsapi "k8s.io/metrics/pkg/apis/metrics/v1beta1"
metricsfake "k8s.io/metrics/pkg/client/clientset_generated/clientset/fake"
cmfake "k8s.io/metrics/pkg/client/custom_metrics/fake"
emfake "k8s.io/metrics/pkg/client/external_metrics/fake"
"github.com/stretchr/testify/assert"
)
@ -50,13 +51,15 @@ type restClientTestCase struct {
reportedPodMetrics [][]int64
singleObject *autoscalingapi.CrossVersionObjectReference
namespace string
selector labels.Selector
resourceName v1.ResourceName
metricName string
namespace string
selector labels.Selector
resourceName v1.ResourceName
metricName string
metricSelector *metav1.LabelSelector
metricLabelSelector labels.Selector
}
func (tc *restClientTestCase) prepareTestClient(t *testing.T) (*metricsfake.Clientset, *cmfake.FakeCustomMetricsClient) {
func (tc *restClientTestCase) prepareTestClient(t *testing.T) (*metricsfake.Clientset, *cmfake.FakeCustomMetricsClient, *emfake.FakeExternalMetricsClient) {
namespace := "test-namespace"
tc.namespace = namespace
podNamePrefix := "test-pod"
@ -65,9 +68,12 @@ func (tc *restClientTestCase) prepareTestClient(t *testing.T) (*metricsfake.Clie
// it's a resource test if we have a resource name
isResource := len(tc.resourceName) > 0
// it's an external test if we have a metric selector
isExternal := tc.metricSelector != nil
fakeMetricsClient := &metricsfake.Clientset{}
fakeCMClient := &cmfake.FakeCustomMetricsClient{}
fakeEMClient := &emfake.FakeExternalMetricsClient{}
if isResource {
fakeMetricsClient.AddReactor("list", "pods", func(action core.Action) (handled bool, ret runtime.Object, err error) {
@ -100,6 +106,24 @@ func (tc *restClientTestCase) prepareTestClient(t *testing.T) (*metricsfake.Clie
}
return true, metrics, nil
})
} else if isExternal {
fakeEMClient.AddReactor("list", "*", func(action core.Action) (handled bool, ret runtime.Object, err error) {
listAction := action.(core.ListAction)
assert.Equal(t, tc.metricName, listAction.GetResource().Resource, "the metric requested should have matched the one specified.")
assert.Equal(t, tc.metricLabelSelector, listAction.GetListRestrictions().Labels, "the metric selector should have matched the one specified")
metrics := emapi.ExternalMetricValueList{}
for _, metricPoint := range tc.reportedMetricPoints {
timestamp := fixedTimestamp.Add(time.Duration(metricPoint.timestamp) * time.Minute)
metric := emapi.ExternalMetricValue{
Value: *resource.NewMilliQuantity(int64(metricPoint.level), resource.DecimalSI),
Timestamp: metav1.Time{Time: timestamp},
MetricName: tc.metricName,
}
metrics.Items = append(metrics.Items, metric)
}
return true, &metrics, nil
})
} else {
fakeCMClient.AddReactor("get", "*", func(action core.Action) (handled bool, ret runtime.Object, err error) {
getForAction := action.(cmfake.GetForAction)
@ -163,13 +187,13 @@ func (tc *restClientTestCase) prepareTestClient(t *testing.T) (*metricsfake.Clie
})
}
return fakeMetricsClient, fakeCMClient
return fakeMetricsClient, fakeCMClient, fakeEMClient
}
func (tc *restClientTestCase) verifyResults(t *testing.T, metrics PodMetricsInfo, timestamp time.Time, err error) {
if tc.desiredError != nil {
assert.Error(t, err, "there should be an error retrieving the metrics")
assert.Contains(t, fmt.Sprintf("%v", err), fmt.Sprintf("%v", tc.desiredError), "the error message should be eas expected")
assert.Contains(t, fmt.Sprintf("%v", err), fmt.Sprintf("%v", tc.desiredError), "the error message should be as expected")
return
}
assert.NoError(t, err, "there should be no error retrieving the metrics")
@ -182,11 +206,24 @@ func (tc *restClientTestCase) verifyResults(t *testing.T, metrics PodMetricsInfo
}
func (tc *restClientTestCase) runTest(t *testing.T) {
testMetricsClient, testCMClient := tc.prepareTestClient(t)
metricsClient := NewRESTMetricsClient(testMetricsClient.MetricsV1beta1(), testCMClient)
var err error
testMetricsClient, testCMClient, testEMClient := tc.prepareTestClient(t)
metricsClient := NewRESTMetricsClient(testMetricsClient.MetricsV1beta1(), testCMClient, testEMClient)
isResource := len(tc.resourceName) > 0
isExternal := tc.metricSelector != nil
if isResource {
info, timestamp, err := metricsClient.GetResourceMetric(kv1.ResourceName(tc.resourceName), tc.namespace, tc.selector)
info, timestamp, err := metricsClient.GetResourceMetric(v1.ResourceName(tc.resourceName), tc.namespace, tc.selector)
tc.verifyResults(t, info, timestamp, err)
} else if isExternal {
tc.metricLabelSelector, err = metav1.LabelSelectorAsSelector(tc.metricSelector)
if err != nil {
t.Errorf("invalid metric selector: %+v", tc.metricSelector)
}
val, timestamp, err := metricsClient.GetExternalMetric(tc.metricName, tc.namespace, tc.metricLabelSelector)
info := make(PodMetricsInfo, len(val))
for i, metricVal := range val {
info[fmt.Sprintf("%v-val-%v", tc.metricName, i)] = metricVal
}
tc.verifyResults(t, info, timestamp, err)
} else if tc.singleObject == nil {
info, timestamp, err := metricsClient.GetRawMetric(tc.metricName, tc.namespace, tc.selector)
@ -210,6 +247,19 @@ func TestRESTClientCPU(t *testing.T) {
tc.runTest(t)
}
func TestRESTClientExternal(t *testing.T) {
tc := restClientTestCase{
desiredMetricValues: PodMetricsInfo{
"external-val-0": 10000, "external-val-1": 20000, "external-val-2": 10000,
},
metricSelector: &metav1.LabelSelector{MatchLabels: map[string]string{"label": "value"}},
metricName: "external",
targetTimestamp: 1,
reportedMetricPoints: []metricPoint{{10000, 1}, {20000, 1}, {10000, 1}},
}
tc.runTest(t)
}
func TestRESTClientQPS(t *testing.T) {
tc := restClientTestCase{
desiredMetricValues: PodMetricsInfo{
@ -249,10 +299,44 @@ func TestRESTClientQpsSumEqualZero(t *testing.T) {
tc.runTest(t)
}
func TestRESTClientExternalSumEqualZero(t *testing.T) {
tc := restClientTestCase{
desiredMetricValues: PodMetricsInfo{
"external-val-0": 0, "external-val-1": 0, "external-val-2": 0,
},
metricSelector: &metav1.LabelSelector{MatchLabels: map[string]string{"label": "value"}},
metricName: "external",
targetTimestamp: 0,
reportedMetricPoints: []metricPoint{{0, 0}, {0, 0}, {0, 0}},
}
tc.runTest(t)
}
func TestRESTClientQpsEmptyMetrics(t *testing.T) {
tc := restClientTestCase{
metricName: "qps",
desiredError: fmt.Errorf("no metrics returned from custom metrics API"),
reportedMetricPoints: []metricPoint{},
}
tc.runTest(t)
}
func TestRESTClientExternalEmptyMetrics(t *testing.T) {
tc := restClientTestCase{
metricName: "external",
metricSelector: &metav1.LabelSelector{MatchLabels: map[string]string{"label": "value"}},
desiredError: fmt.Errorf("no metrics returned from external metrics API"),
reportedMetricPoints: []metricPoint{},
}
tc.runTest(t)
}
func TestRESTClientCPUEmptyMetrics(t *testing.T) {
tc := restClientTestCase{
resourceName: v1.ResourceCPU,
desiredError: fmt.Errorf("no metrics returned from heapster"),
desiredError: fmt.Errorf("no metrics returned from resource metrics API"),
reportedMetricPoints: []metricPoint{},
reportedPodMetrics: [][]int64{},
}

149
vendor/k8s.io/kubernetes/pkg/controller/podautoscaler/metrics/utilization_test.go generated vendored Normal file
View File

@ -0,0 +1,149 @@
/*
Copyright 2018 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 metrics
import (
"fmt"
"testing"
"github.com/stretchr/testify/assert"
)
type resourceUtilizationRatioTestCase struct {
metrics PodMetricsInfo
requests map[string]int64
targetUtilization int32
expectedUtilizationRatio float64
expectedCurrentUtilization int32
expectedRawAverageValue int64
expectedErr error
}
func (tc *resourceUtilizationRatioTestCase) runTest(t *testing.T) {
actualUtilizationRatio, actualCurrentUtilization, actualRawAverageValue, actualErr := GetResourceUtilizationRatio(tc.metrics, tc.requests, tc.targetUtilization)
if tc.expectedErr != nil {
assert.Error(t, actualErr, "there should be an error getting the utilization ratio")
assert.Contains(t, fmt.Sprintf("%v", actualErr), fmt.Sprintf("%v", tc.expectedErr), "the error message should be as expected")
return
}
assert.NoError(t, actualErr, "there should be no error retrieving the utilization ratio")
assert.Equal(t, tc.expectedUtilizationRatio, actualUtilizationRatio, "the utilization ratios should be as expected")
assert.Equal(t, tc.expectedCurrentUtilization, actualCurrentUtilization, "the current utilization should be as expected")
assert.Equal(t, tc.expectedRawAverageValue, actualRawAverageValue, "the raw average value should be as expected")
}
type metricUtilizationRatioTestCase struct {
metrics PodMetricsInfo
targetUtilization int64
expectedUtilizationRatio float64
expectedCurrentUtilization int64
}
func (tc *metricUtilizationRatioTestCase) runTest(t *testing.T) {
actualUtilizationRatio, actualCurrentUtilization := GetMetricUtilizationRatio(tc.metrics, tc.targetUtilization)
assert.Equal(t, tc.expectedUtilizationRatio, actualUtilizationRatio, "the utilization ratios should be as expected")
assert.Equal(t, tc.expectedCurrentUtilization, actualCurrentUtilization, "the current utilization should be as expected")
}
func TestGetResourceUtilizationRatioBaseCase(t *testing.T) {
tc := resourceUtilizationRatioTestCase{
metrics: PodMetricsInfo{
"test-pod-0": 50, "test-pod-1": 76,
},
requests: map[string]int64{
"test-pod-0": 100, "test-pod-1": 100,
},
targetUtilization: 50,
expectedUtilizationRatio: 1.26,
expectedCurrentUtilization: 63,
expectedRawAverageValue: 63,
expectedErr: nil,
}
tc.runTest(t)
}
func TestGetResourceUtilizationRatioIgnorePodsWithNoRequest(t *testing.T) {
tc := resourceUtilizationRatioTestCase{
metrics: PodMetricsInfo{
"test-pod-0": 50, "test-pod-1": 76, "test-pod-no-request": 100,
},
requests: map[string]int64{
"test-pod-0": 100, "test-pod-1": 100,
},
targetUtilization: 50,
expectedUtilizationRatio: 1.26,
expectedCurrentUtilization: 63,
expectedRawAverageValue: 63,
expectedErr: nil,
}
tc.runTest(t)
}
func TestGetResourceUtilizationRatioExtraRequest(t *testing.T) {
tc := resourceUtilizationRatioTestCase{
metrics: PodMetricsInfo{
"test-pod-0": 50, "test-pod-1": 76,
},
requests: map[string]int64{
"test-pod-0": 100, "test-pod-1": 100, "test-pod-extra-request": 500,
},
targetUtilization: 50,
expectedUtilizationRatio: 1.26,
expectedCurrentUtilization: 63,
expectedRawAverageValue: 63,
expectedErr: nil,
}
tc.runTest(t)
}
func TestGetResourceUtilizationRatioNoRequests(t *testing.T) {
tc := resourceUtilizationRatioTestCase{
metrics: PodMetricsInfo{
"test-pod-0": 50, "test-pod-1": 76,
},
requests: map[string]int64{},
targetUtilization: 50,
expectedUtilizationRatio: 0,
expectedCurrentUtilization: 0,
expectedRawAverageValue: 0,
expectedErr: fmt.Errorf("no metrics returned matched known pods"),
}
tc.runTest(t)
}
func TestGetMetricUtilizationRatioBaseCase(t *testing.T) {
tc := metricUtilizationRatioTestCase{
metrics: PodMetricsInfo{
"test-pod-0": 5000, "test-pod-1": 10000,
},
targetUtilization: 10000,
expectedUtilizationRatio: .75,
expectedCurrentUtilization: 7500,
}
tc.runTest(t)
}

54
vendor/k8s.io/kubernetes/pkg/controller/podautoscaler/replica_calculator.go generated vendored
View File

@ -278,6 +278,33 @@ func (c *ReplicaCalculator) GetObjectMetricReplicas(currentReplicas int32, targe
return 0, 0, time.Time{}, fmt.Errorf("unable to get metric %s: %v on %s %s/%s", metricName, objectRef.Kind, namespace, objectRef.Name, err)
}
usageRatio := float64(utilization) / float64(targetUtilization)
if math.Abs(1.0-usageRatio) <= c.tolerance {
// return the current replicas if the change would be too small
return currentReplicas, utilization, timestamp, nil
}
replicaCount = int32(math.Ceil(usageRatio * float64(currentReplicas)))
return replicaCount, utilization, timestamp, nil
}
// GetExternalMetricReplicas calculates the desired replica count based on a
// target metric value (as a milli-value) for the external metric in the given
// namespace, and the current replica count.
func (c *ReplicaCalculator) GetExternalMetricReplicas(currentReplicas int32, targetUtilization int64, metricName, namespace string, selector *metav1.LabelSelector) (replicaCount int32, utilization int64, timestamp time.Time, err error) {
labelSelector, err := metav1.LabelSelectorAsSelector(selector)
if err != nil {
return 0, 0, time.Time{}, err
}
metrics, timestamp, err := c.metricsClient.GetExternalMetric(metricName, namespace, labelSelector)
if err != nil {
return 0, 0, time.Time{}, fmt.Errorf("unable to get external metric %s/%s/%+v: %s", namespace, metricName, selector, err)
}
utilization = 0
for _, val := range metrics {
utilization = utilization + val
}
usageRatio := float64(utilization) / float64(targetUtilization)
if math.Abs(1.0-usageRatio) <= c.tolerance {
// return the current replicas if the change would be too small
@ -286,3 +313,30 @@ func (c *ReplicaCalculator) GetObjectMetricReplicas(currentReplicas int32, targe
return int32(math.Ceil(usageRatio * float64(currentReplicas))), utilization, timestamp, nil
}
// GetExternalPerPodMetricReplicas calculates the desired replica count based on a
// target metric value per pod (as a milli-value) for the external metric in the
// given namespace, and the current replica count.
func (c *ReplicaCalculator) GetExternalPerPodMetricReplicas(currentReplicas int32, targetUtilizationPerPod int64, metricName, namespace string, selector *metav1.LabelSelector) (replicaCount int32, utilization int64, timestamp time.Time, err error) {
labelSelector, err := metav1.LabelSelectorAsSelector(selector)
if err != nil {
return 0, 0, time.Time{}, err
}
metrics, timestamp, err := c.metricsClient.GetExternalMetric(metricName, namespace, labelSelector)
if err != nil {
return 0, 0, time.Time{}, fmt.Errorf("unable to get external metric %s/%s/%+v: %s", namespace, metricName, selector, err)
}
utilization = 0
for _, val := range metrics {
utilization = utilization + val
}
replicaCount = currentReplicas
usageRatio := float64(utilization) / (float64(targetUtilizationPerPod) * float64(replicaCount))
if math.Abs(1.0-usageRatio) > c.tolerance {
// update number of replicas if the change is large enough
replicaCount = int32(math.Ceil(float64(utilization) / float64(targetUtilizationPerPod)))
}
utilization = int64(math.Ceil(float64(utilization) / float64(currentReplicas)))
return replicaCount, utilization, timestamp, nil
}

161
vendor/k8s.io/kubernetes/pkg/controller/podautoscaler/replica_calculator_test.go generated vendored
View File

@ -33,9 +33,11 @@ import (
"k8s.io/kubernetes/pkg/api/legacyscheme"
"k8s.io/kubernetes/pkg/controller/podautoscaler/metrics"
cmapi "k8s.io/metrics/pkg/apis/custom_metrics/v1beta1"
emapi "k8s.io/metrics/pkg/apis/external_metrics/v1beta1"
metricsapi "k8s.io/metrics/pkg/apis/metrics/v1beta1"
metricsfake "k8s.io/metrics/pkg/client/clientset_generated/clientset/fake"
cmfake "k8s.io/metrics/pkg/client/custom_metrics/fake"
emfake "k8s.io/metrics/pkg/client/external_metrics/fake"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
@ -57,9 +59,11 @@ type metricInfo struct {
name string
levels []int64
singleObject *autoscalingv2.CrossVersionObjectReference
selector *metav1.LabelSelector
targetUtilization int64
expectedUtilization int64
targetUtilization int64
perPodTargetUtilization int64
expectedUtilization int64
}
type replicaCalcTestCase struct {
@ -81,7 +85,7 @@ const (
numContainersPerPod = 2
)
func (tc *replicaCalcTestCase) prepareTestClient(t *testing.T) (*fake.Clientset, *metricsfake.Clientset, *cmfake.FakeCustomMetricsClient) {
func (tc *replicaCalcTestCase) prepareTestClient(t *testing.T) (*fake.Clientset, *metricsfake.Clientset, *cmfake.FakeCustomMetricsClient, *emfake.FakeExternalMetricsClient) {
fakeClient := &fake.Clientset{}
fakeClient.AddReactor("list", "pods", func(action core.Action) (handled bool, ret runtime.Object, err error) {
@ -236,12 +240,45 @@ func (tc *replicaCalcTestCase) prepareTestClient(t *testing.T) (*fake.Clientset,
return true, metrics, nil
})
return fakeClient, fakeMetricsClient, fakeCMClient
fakeEMClient := &emfake.FakeExternalMetricsClient{}
fakeEMClient.AddReactor("list", "*", func(action core.Action) (handled bool, ret runtime.Object, err error) {
listAction, wasList := action.(core.ListAction)
if !wasList {
return true, nil, fmt.Errorf("expected a list-for action, got %v instead", action)
}
if tc.metric == nil {
return true, nil, fmt.Errorf("no external metrics specified in test client")
}
assert.Equal(t, tc.metric.name, listAction.GetResource().Resource, "the metric requested should have matched the one specified")
selector, err := metav1.LabelSelectorAsSelector(tc.metric.selector)
if err != nil {
return true, nil, fmt.Errorf("failed to convert label selector specified in test client")
}
assert.Equal(t, selector, listAction.GetListRestrictions().Labels, "the metric selector should have matched the one specified")
metrics := emapi.ExternalMetricValueList{}
for _, level := range tc.metric.levels {
metric := emapi.ExternalMetricValue{
Timestamp: metav1.Time{Time: tc.timestamp},
MetricName: tc.metric.name,
Value: *resource.NewMilliQuantity(level, resource.DecimalSI),
}
metrics.Items = append(metrics.Items, metric)
}
return true, &metrics, nil
})
return fakeClient, fakeMetricsClient, fakeCMClient, fakeEMClient
}
func (tc *replicaCalcTestCase) runTest(t *testing.T) {
testClient, testMetricsClient, testCMClient := tc.prepareTestClient(t)
metricsClient := metrics.NewRESTMetricsClient(testMetricsClient.MetricsV1beta1(), testCMClient)
testClient, testMetricsClient, testCMClient, testEMClient := tc.prepareTestClient(t)
metricsClient := metrics.NewRESTMetricsClient(testMetricsClient.MetricsV1beta1(), testCMClient, testEMClient)
replicaCalc := &ReplicaCalculator{
metricsClient: metricsClient,
@ -277,6 +314,12 @@ func (tc *replicaCalcTestCase) runTest(t *testing.T) {
var err error
if tc.metric.singleObject != nil {
outReplicas, outUtilization, outTimestamp, err = replicaCalc.GetObjectMetricReplicas(tc.currentReplicas, tc.metric.targetUtilization, tc.metric.name, testNamespace, tc.metric.singleObject)
} else if tc.metric.selector != nil {
if tc.metric.targetUtilization > 0 {
outReplicas, outUtilization, outTimestamp, err = replicaCalc.GetExternalMetricReplicas(tc.currentReplicas, tc.metric.targetUtilization, tc.metric.name, testNamespace, tc.metric.selector)
} else if tc.metric.perPodTargetUtilization > 0 {
outReplicas, outUtilization, outTimestamp, err = replicaCalc.GetExternalPerPodMetricReplicas(tc.currentReplicas, tc.metric.perPodTargetUtilization, tc.metric.name, testNamespace, tc.metric.selector)
}
} else {
outReplicas, outUtilization, outTimestamp, err = replicaCalc.GetMetricReplicas(tc.currentReplicas, tc.metric.targetUtilization, tc.metric.name, testNamespace, selector)
}
@ -425,6 +468,50 @@ func TestReplicaCalcScaleUpCMObject(t *testing.T) {
tc.runTest(t)
}
func TestReplicaCalcScaleUpCMExternal(t *testing.T) {
tc := replicaCalcTestCase{
currentReplicas: 1,
expectedReplicas: 2,
metric: &metricInfo{
name: "qps",
levels: []int64{8600},
targetUtilization: 4400,
expectedUtilization: 8600,
selector: &metav1.LabelSelector{MatchLabels: map[string]string{"label": "value"}},
},
}
tc.runTest(t)
}
func TestReplicaCalcScaleUpCMExternalNoLabels(t *testing.T) {
tc := replicaCalcTestCase{
currentReplicas: 1,
expectedReplicas: 2,
metric: &metricInfo{
name: "qps",
levels: []int64{8600},
targetUtilization: 4400,
expectedUtilization: 8600,
},
}
tc.runTest(t)
}
func TestReplicaCalcScaleUpPerPodCMExternal(t *testing.T) {
tc := replicaCalcTestCase{
currentReplicas: 3,
expectedReplicas: 4,
metric: &metricInfo{
name: "qps",
levels: []int64{8600},
perPodTargetUtilization: 2150,
expectedUtilization: 2867,
selector: &metav1.LabelSelector{MatchLabels: map[string]string{"label": "value"}},
},
}
tc.runTest(t)
}
func TestReplicaCalcScaleDown(t *testing.T) {
tc := replicaCalcTestCase{
currentReplicas: 5,
@ -475,6 +562,36 @@ func TestReplicaCalcScaleDownCMObject(t *testing.T) {
tc.runTest(t)
}
func TestReplicaCalcScaleDownCMExternal(t *testing.T) {
tc := replicaCalcTestCase{
currentReplicas: 5,
expectedReplicas: 3,
metric: &metricInfo{
name: "qps",
levels: []int64{8600},
targetUtilization: 14334,
expectedUtilization: 8600,
selector: &metav1.LabelSelector{MatchLabels: map[string]string{"label": "value"}},
},
}
tc.runTest(t)
}
func TestReplicaCalcScaleDownPerPodCMExternal(t *testing.T) {
tc := replicaCalcTestCase{
currentReplicas: 5,
expectedReplicas: 3,
metric: &metricInfo{
name: "qps",
levels: []int64{8600},
perPodTargetUtilization: 2867,
expectedUtilization: 1720,
selector: &metav1.LabelSelector{MatchLabels: map[string]string{"label": "value"}},
},
}
tc.runTest(t)
}
func TestReplicaCalcScaleDownIgnoresUnreadyPods(t *testing.T) {
tc := replicaCalcTestCase{
currentReplicas: 5,
@ -543,6 +660,36 @@ func TestReplicaCalcToleranceCMObject(t *testing.T) {
tc.runTest(t)
}
func TestReplicaCalcToleranceCMExternal(t *testing.T) {
tc := replicaCalcTestCase{
currentReplicas: 3,
expectedReplicas: 3,
metric: &metricInfo{
name: "qps",
levels: []int64{8600},
targetUtilization: 8888,
expectedUtilization: 8600,
selector: &metav1.LabelSelector{MatchLabels: map[string]string{"label": "value"}},
},
}
tc.runTest(t)
}
func TestReplicaCalcTolerancePerPodCMExternal(t *testing.T) {
tc := replicaCalcTestCase{
currentReplicas: 3,
expectedReplicas: 3,
metric: &metricInfo{
name: "qps",
levels: []int64{8600},
perPodTargetUtilization: 2900,
expectedUtilization: 2867,
selector: &metav1.LabelSelector{MatchLabels: map[string]string{"label": "value"}},
},
}
tc.runTest(t)
}
func TestReplicaCalcSuperfluousMetrics(t *testing.T) {
tc := replicaCalcTestCase{
currentReplicas: 4,
@ -579,7 +726,7 @@ func TestReplicaCalcMissingMetrics(t *testing.T) {
func TestReplicaCalcEmptyMetrics(t *testing.T) {
tc := replicaCalcTestCase{
currentReplicas: 4,
expectedError: fmt.Errorf("unable to get metrics for resource cpu: no metrics returned from heapster"),
expectedError: fmt.Errorf("unable to get metrics for resource cpu: no metrics returned from resource metrics API"),
resource: &resourceInfo{
name: v1.ResourceCPU,
requests: []resource.Quantity{resource.MustParse("1.0"), resource.MustParse("1.0"), resource.MustParse("1.0")},