mirror of
https://github.com/k3s-io/kubernetes.git
synced 2025-07-22 19:31:44 +00:00
Add external metrics client to HPA rest client
This commit is contained in:
parent
5fcc8dd564
commit
66f4f9080d
@ -129,6 +129,7 @@ go_library(
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"//vendor/k8s.io/client-go/util/cert:go_default_library",
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"//vendor/k8s.io/metrics/pkg/client/clientset_generated/clientset/typed/metrics/v1beta1:go_default_library",
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"//vendor/k8s.io/metrics/pkg/client/custom_metrics:go_default_library",
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"//vendor/k8s.io/metrics/pkg/client/external_metrics:go_default_library",
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],
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)
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@ -31,6 +31,7 @@ import (
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"k8s.io/kubernetes/pkg/controller/podautoscaler/metrics"
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resourceclient "k8s.io/metrics/pkg/client/clientset_generated/clientset/typed/metrics/v1beta1"
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"k8s.io/metrics/pkg/client/custom_metrics"
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"k8s.io/metrics/pkg/client/external_metrics"
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)
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func startHPAController(ctx ControllerContext) (bool, error) {
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@ -51,6 +52,7 @@ func startHPAControllerWithRESTClient(ctx ControllerContext) (bool, error) {
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metricsClient := metrics.NewRESTMetricsClient(
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resourceclient.NewForConfigOrDie(clientConfig),
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custom_metrics.NewForConfigOrDie(clientConfig),
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external_metrics.NewForConfigOrDie(clientConfig),
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)
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return startHPAControllerWithMetricsClient(ctx, metricsClient)
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}
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@ -86,6 +86,7 @@ go_test(
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"//vendor/k8s.io/metrics/pkg/apis/metrics/v1beta1:go_default_library",
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"//vendor/k8s.io/metrics/pkg/client/clientset_generated/clientset/fake:go_default_library",
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"//vendor/k8s.io/metrics/pkg/client/custom_metrics/fake:go_default_library",
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"//vendor/k8s.io/metrics/pkg/client/external_metrics/fake:go_default_library",
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],
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)
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@ -45,6 +45,7 @@ import (
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metricsapi "k8s.io/metrics/pkg/apis/metrics/v1beta1"
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metricsfake "k8s.io/metrics/pkg/client/clientset_generated/clientset/fake"
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cmfake "k8s.io/metrics/pkg/client/custom_metrics/fake"
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emfake "k8s.io/metrics/pkg/client/external_metrics/fake"
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"github.com/stretchr/testify/assert"
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@ -145,7 +146,7 @@ func init() {
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scaleUpLimitFactor = 8
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}
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func (tc *testCase) prepareTestClient(t *testing.T) (*fake.Clientset, *metricsfake.Clientset, *cmfake.FakeCustomMetricsClient, *scalefake.FakeScaleClient) {
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func (tc *testCase) prepareTestClient(t *testing.T) (*fake.Clientset, *metricsfake.Clientset, *cmfake.FakeCustomMetricsClient, *emfake.FakeExternalMetricsClient, *scalefake.FakeScaleClient) {
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namespace := "test-namespace"
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hpaName := "test-hpa"
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podNamePrefix := "test-pod"
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@ -523,7 +524,9 @@ func (tc *testCase) prepareTestClient(t *testing.T) (*fake.Clientset, *metricsfa
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return true, metrics, nil
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})
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return fakeClient, fakeMetricsClient, fakeCMClient, fakeScaleClient
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fakeEMClient := &emfake.FakeExternalMetricsClient{}
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return fakeClient, fakeMetricsClient, fakeCMClient, fakeEMClient, fakeScaleClient
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}
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func (tc *testCase) verifyResults(t *testing.T) {
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@ -538,7 +541,7 @@ func (tc *testCase) verifyResults(t *testing.T) {
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}
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func (tc *testCase) setupController(t *testing.T) (*HorizontalController, informers.SharedInformerFactory) {
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testClient, testMetricsClient, testCMClient, testScaleClient := tc.prepareTestClient(t)
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testClient, testMetricsClient, testCMClient, testEMClient, testScaleClient := tc.prepareTestClient(t)
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if tc.testClient != nil {
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testClient = tc.testClient
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}
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@ -554,6 +557,7 @@ func (tc *testCase) setupController(t *testing.T) (*HorizontalController, inform
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metricsClient := metrics.NewRESTMetricsClient(
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testMetricsClient.MetricsV1beta1(),
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testCMClient,
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testEMClient,
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)
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eventClient := &fake.Clientset{}
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@ -1268,7 +1272,7 @@ func TestConditionInvalidSelectorMissing(t *testing.T) {
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},
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}
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_, _, _, testScaleClient := tc.prepareTestClient(t)
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_, _, _, _,testScaleClient := tc.prepareTestClient(t)
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tc.testScaleClient = testScaleClient
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testScaleClient.PrependReactor("get", "replicationcontrollers", func(action core.Action) (handled bool, ret runtime.Object, err error) {
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@ -1313,7 +1317,7 @@ func TestConditionInvalidSelectorUnparsable(t *testing.T) {
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},
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}
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_, _, _, testScaleClient := tc.prepareTestClient(t)
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_, _, _, _, testScaleClient := tc.prepareTestClient(t)
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tc.testScaleClient = testScaleClient
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testScaleClient.PrependReactor("get", "replicationcontrollers", func(action core.Action) (handled bool, ret runtime.Object, err error) {
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@ -1374,7 +1378,7 @@ func TestConditionFailedGetMetrics(t *testing.T) {
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reportedCPURequests: []resource.Quantity{resource.MustParse("0.1"), resource.MustParse("0.1"), resource.MustParse("0.1")},
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useMetricsAPI: true,
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}
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_, testMetricsClient, testCMClient, _ := tc.prepareTestClient(t)
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_, testMetricsClient, testCMClient, _, _ := tc.prepareTestClient(t)
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tc.testMetricsClient = testMetricsClient
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tc.testCMClient = testCMClient
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@ -1447,7 +1451,7 @@ func TestConditionFailedGetScale(t *testing.T) {
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},
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}
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_, _, _, testScaleClient := tc.prepareTestClient(t)
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_, _, _, _, testScaleClient := tc.prepareTestClient(t)
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tc.testScaleClient = testScaleClient
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testScaleClient.PrependReactor("get", "replicationcontrollers", func(action core.Action) (handled bool, ret runtime.Object, err error) {
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@ -1474,7 +1478,7 @@ func TestConditionFailedUpdateScale(t *testing.T) {
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}),
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}
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_, _, _, testScaleClient := tc.prepareTestClient(t)
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_, _, _, _, testScaleClient := tc.prepareTestClient(t)
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tc.testScaleClient = testScaleClient
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testScaleClient.PrependReactor("update", "replicationcontrollers", func(action core.Action) (handled bool, ret runtime.Object, err error) {
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@ -1660,7 +1664,7 @@ func TestAvoidUncessaryUpdates(t *testing.T) {
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reportedPodReadiness: []v1.ConditionStatus{v1.ConditionTrue, v1.ConditionFalse, v1.ConditionFalse},
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useMetricsAPI: true,
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}
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testClient, _, _, _ := tc.prepareTestClient(t)
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testClient, _, _, _, _ := tc.prepareTestClient(t)
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tc.testClient = testClient
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var savedHPA *autoscalingv1.HorizontalPodAutoscaler
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testClient.PrependReactor("list", "horizontalpodautoscalers", func(action core.Action) (handled bool, ret runtime.Object, err error) {
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@ -29,6 +29,7 @@ go_library(
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"//vendor/k8s.io/metrics/pkg/apis/metrics/v1alpha1:go_default_library",
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"//vendor/k8s.io/metrics/pkg/client/clientset_generated/clientset/typed/metrics/v1beta1:go_default_library",
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"//vendor/k8s.io/metrics/pkg/client/custom_metrics:go_default_library",
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"//vendor/k8s.io/metrics/pkg/client/external_metrics:go_default_library",
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],
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)
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@ -56,10 +57,12 @@ go_test(
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"//vendor/k8s.io/client-go/testing:go_default_library",
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"//vendor/k8s.io/heapster/metrics/api/v1/types:go_default_library",
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"//vendor/k8s.io/metrics/pkg/apis/custom_metrics/v1beta1:go_default_library",
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"//vendor/k8s.io/metrics/pkg/apis/external_metrics/v1beta1:go_default_library",
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"//vendor/k8s.io/metrics/pkg/apis/metrics/v1alpha1:go_default_library",
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"//vendor/k8s.io/metrics/pkg/apis/metrics/v1beta1:go_default_library",
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"//vendor/k8s.io/metrics/pkg/client/clientset_generated/clientset/fake:go_default_library",
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"//vendor/k8s.io/metrics/pkg/client/custom_metrics/fake:go_default_library",
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"//vendor/k8s.io/metrics/pkg/client/external_metrics/fake:go_default_library",
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],
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)
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@ -42,4 +42,8 @@ type MetricsClient interface {
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// GetObjectMetric gets the given metric (and an associated timestamp) for the given
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// object in the given namespace
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GetObjectMetric(metricName string, namespace string, objectRef *autoscaling.CrossVersionObjectReference) (int64, time.Time, error)
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// GetExternalMetric gets all the values of a given external metric
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// that match the specified selector.
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GetExternalMetric(metricName string, namespace string, selector labels.Selector) ([]int64, time.Time, error)
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}
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@ -177,6 +177,10 @@ func (h *HeapsterMetricsClient) GetObjectMetric(metricName string, namespace str
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return 0, time.Time{}, fmt.Errorf("object metrics are not yet supported")
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}
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func (h *HeapsterMetricsClient) GetExternalMetric(metricName, namespace string, selector labels.Selector) ([]int64, time.Time, error) {
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return nil, time.Time{}, fmt.Errorf("external metrics aren't supported")
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}
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func collapseTimeSamples(metrics heapster.MetricResult, duration time.Duration) (int64, time.Time, bool) {
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floatSum := float64(0)
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intSum := int64(0)
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@ -30,12 +30,14 @@ import (
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customapi "k8s.io/metrics/pkg/apis/custom_metrics/v1beta1"
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resourceclient "k8s.io/metrics/pkg/client/clientset_generated/clientset/typed/metrics/v1beta1"
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customclient "k8s.io/metrics/pkg/client/custom_metrics"
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externalclient "k8s.io/metrics/pkg/client/external_metrics"
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)
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func NewRESTMetricsClient(resourceClient resourceclient.PodMetricsesGetter, customClient customclient.CustomMetricsClient) MetricsClient {
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func NewRESTMetricsClient(resourceClient resourceclient.PodMetricsesGetter, customClient customclient.CustomMetricsClient, externalClient externalclient.ExternalMetricsClient) MetricsClient {
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return &restMetricsClient{
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&resourceMetricsClient{resourceClient},
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&customMetricsClient{customClient},
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&externalMetricsClient{externalClient},
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}
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}
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@ -45,6 +47,7 @@ func NewRESTMetricsClient(resourceClient resourceclient.PodMetricsesGetter, cust
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type restMetricsClient struct {
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*resourceMetricsClient
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*customMetricsClient
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*externalMetricsClient
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}
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// resourceMetricsClient implements the resource-metrics-related parts of MetricsClient,
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@ -139,3 +142,29 @@ func (c *customMetricsClient) GetObjectMetric(metricName string, namespace strin
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return metricValue.Value.MilliValue(), metricValue.Timestamp.Time, nil
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}
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// externalMetricsClient implenets the external metrics related parts of MetricsClient,
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// using data from the external metrics API.
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type externalMetricsClient struct {
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client externalclient.ExternalMetricsClient
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}
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// GetExternalMetric gets all the values of a given external metric
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// that match the specified selector.
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func (c *externalMetricsClient) GetExternalMetric(metricName, namespace string, selector labels.Selector) ([]int64, time.Time, error) {
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metrics, err := c.client.NamespacedMetrics(namespace).Get(metricName, selector)
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if err != nil {
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return []int64{}, time.Time{}, fmt.Errorf("unable to fetch metrics from external metrics API: %v", err)
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}
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if len(metrics.Items) == 0 {
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return nil, time.Time{}, fmt.Errorf("no metrics returned from external metrics API")
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}
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res := make([]int64, 0)
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for _, m := range metrics.Items {
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res = append(res, m.Value.MilliValue())
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}
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timestamp := metrics.Items[0].Timestamp.Time
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return res, timestamp, nil
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}
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@ -32,9 +32,11 @@ import (
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"k8s.io/kubernetes/pkg/api/legacyscheme"
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_ "k8s.io/kubernetes/pkg/apis/extensions/install"
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cmapi "k8s.io/metrics/pkg/apis/custom_metrics/v1beta1"
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emapi "k8s.io/metrics/pkg/apis/external_metrics/v1beta1"
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metricsapi "k8s.io/metrics/pkg/apis/metrics/v1beta1"
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metricsfake "k8s.io/metrics/pkg/client/clientset_generated/clientset/fake"
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cmfake "k8s.io/metrics/pkg/client/custom_metrics/fake"
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emfake "k8s.io/metrics/pkg/client/external_metrics/fake"
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"github.com/stretchr/testify/assert"
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)
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@ -49,13 +51,15 @@ type restClientTestCase struct {
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reportedPodMetrics [][]int64
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singleObject *autoscalingapi.CrossVersionObjectReference
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namespace string
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selector labels.Selector
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resourceName v1.ResourceName
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metricName string
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namespace string
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selector labels.Selector
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resourceName v1.ResourceName
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metricName string
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metricSelector *metav1.LabelSelector
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metricLabelSelector labels.Selector
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}
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func (tc *restClientTestCase) prepareTestClient(t *testing.T) (*metricsfake.Clientset, *cmfake.FakeCustomMetricsClient) {
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func (tc *restClientTestCase) prepareTestClient(t *testing.T) (*metricsfake.Clientset, *cmfake.FakeCustomMetricsClient, *emfake.FakeExternalMetricsClient) {
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namespace := "test-namespace"
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tc.namespace = namespace
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podNamePrefix := "test-pod"
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@ -64,9 +68,12 @@ func (tc *restClientTestCase) prepareTestClient(t *testing.T) (*metricsfake.Clie
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// it's a resource test if we have a resource name
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isResource := len(tc.resourceName) > 0
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// it's an external test if we have a metric selector
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isExternal := tc.metricSelector != nil
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fakeMetricsClient := &metricsfake.Clientset{}
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fakeCMClient := &cmfake.FakeCustomMetricsClient{}
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fakeEMClient := &emfake.FakeExternalMetricsClient{}
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if isResource {
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fakeMetricsClient.AddReactor("list", "pods", func(action core.Action) (handled bool, ret runtime.Object, err error) {
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@ -99,6 +106,24 @@ func (tc *restClientTestCase) prepareTestClient(t *testing.T) (*metricsfake.Clie
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}
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return true, metrics, nil
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})
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} else if isExternal {
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fakeEMClient.AddReactor("get", "externalmetrics", func(action core.Action) (handled bool, ret runtime.Object, err error) {
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getForAction := action.(emfake.GetForAction)
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assert.Equal(t, tc.metricName, getForAction.GetMetricName(), "the metric requested should have matched the one specified.")
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assert.Equal(t, tc.metricLabelSelector, getForAction.GetMetricSelector(), "the metric selector should have matched the one specified")
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metrics := emapi.ExternalMetricValueList{}
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for _, metricPoint := range tc.reportedMetricPoints {
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timestamp := fixedTimestamp.Add(time.Duration(metricPoint.timestamp) * time.Minute)
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metric := emapi.ExternalMetricValue{
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Value: *resource.NewMilliQuantity(int64(metricPoint.level), resource.DecimalSI),
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Timestamp: metav1.Time{Time: timestamp},
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MetricName: tc.metricName,
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}
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metrics.Items = append(metrics.Items, metric)
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}
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return true, &metrics, nil
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})
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} else {
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fakeCMClient.AddReactor("get", "*", func(action core.Action) (handled bool, ret runtime.Object, err error) {
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getForAction := action.(cmfake.GetForAction)
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@ -162,13 +187,13 @@ func (tc *restClientTestCase) prepareTestClient(t *testing.T) (*metricsfake.Clie
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})
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}
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return fakeMetricsClient, fakeCMClient
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return fakeMetricsClient, fakeCMClient, fakeEMClient
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}
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func (tc *restClientTestCase) verifyResults(t *testing.T, metrics PodMetricsInfo, timestamp time.Time, err error) {
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if tc.desiredError != nil {
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assert.Error(t, err, "there should be an error retrieving the metrics")
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assert.Contains(t, fmt.Sprintf("%v", err), fmt.Sprintf("%v", tc.desiredError), "the error message should be eas expected")
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assert.Contains(t, fmt.Sprintf("%v", err), fmt.Sprintf("%v", tc.desiredError), "the error message should be as expected")
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return
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}
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assert.NoError(t, err, "there should be no error retrieving the metrics")
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@ -181,12 +206,25 @@ func (tc *restClientTestCase) verifyResults(t *testing.T, metrics PodMetricsInfo
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}
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func (tc *restClientTestCase) runTest(t *testing.T) {
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testMetricsClient, testCMClient := tc.prepareTestClient(t)
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metricsClient := NewRESTMetricsClient(testMetricsClient.MetricsV1beta1(), testCMClient)
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var err error
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testMetricsClient, testCMClient, testEMClient := tc.prepareTestClient(t)
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metricsClient := NewRESTMetricsClient(testMetricsClient.MetricsV1beta1(), testCMClient, testEMClient)
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isResource := len(tc.resourceName) > 0
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isExternal := tc.metricSelector != nil
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if isResource {
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info, timestamp, err := metricsClient.GetResourceMetric(v1.ResourceName(tc.resourceName), tc.namespace, tc.selector)
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tc.verifyResults(t, info, timestamp, err)
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} else if isExternal {
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tc.metricLabelSelector, err = metav1.LabelSelectorAsSelector(tc.metricSelector)
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if err != nil {
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t.Errorf("invalid metric selector: %+v", tc.metricSelector)
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}
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val, timestamp, err := metricsClient.GetExternalMetric(tc.metricName, tc.namespace, tc.metricLabelSelector)
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info := make(PodMetricsInfo, len(val))
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for i, metricVal := range val {
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info[fmt.Sprintf("%v-val-%v", tc.metricName, i)] = metricVal
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}
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tc.verifyResults(t, info, timestamp, err)
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} else if tc.singleObject == nil {
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info, timestamp, err := metricsClient.GetRawMetric(tc.metricName, tc.namespace, tc.selector)
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tc.verifyResults(t, info, timestamp, err)
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@ -209,6 +247,19 @@ func TestRESTClientCPU(t *testing.T) {
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tc.runTest(t)
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}
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func TestRESTClientExternal(t *testing.T) {
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tc := restClientTestCase{
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desiredMetricValues: PodMetricsInfo{
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"external-val-0": 10000, "external-val-1": 20000, "external-val-2": 10000,
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},
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metricSelector: &metav1.LabelSelector{MatchLabels: map[string]string{"label": "value"}},
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metricName: "external",
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targetTimestamp: 1,
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reportedMetricPoints: []metricPoint{{10000, 1}, {20000, 1}, {10000, 1}},
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}
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tc.runTest(t)
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}
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func TestRESTClientQPS(t *testing.T) {
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tc := restClientTestCase{
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desiredMetricValues: PodMetricsInfo{
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@ -248,6 +299,19 @@ func TestRESTClientQpsSumEqualZero(t *testing.T) {
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tc.runTest(t)
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}
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func TestRESTClientExternalSumEqualZero(t *testing.T) {
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tc := restClientTestCase{
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desiredMetricValues: PodMetricsInfo{
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"external-val-0": 0, "external-val-1": 0, "external-val-2": 0,
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},
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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",
|
||||
@ -258,6 +322,17 @@ func TestRESTClientQpsEmptyMetrics(t *testing.T) {
|
||||
tc.runTest(t)
|
||||
}
|
||||
|
||||
func TestRESTClientExternalEmptyMetrics(t *testing.T) {
|
||||
tc := restClientTestCase{
|
||||
metricName: "external",
|
||||
metricSelector: &metav1.LabelSelector{},
|
||||
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,
|
||||
|
@ -36,6 +36,7 @@ import (
|
||||
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"
|
||||
@ -81,7 +82,7 @@ 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 +237,14 @@ func (tc *replicaCalcTestCase) prepareTestClient(t *testing.T) (*fake.Clientset,
|
||||
return true, metrics, nil
|
||||
})
|
||||
|
||||
return fakeClient, fakeMetricsClient, fakeCMClient
|
||||
fakeEMClient := &emfake.FakeExternalMetricsClient{}
|
||||
|
||||
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,
|
||||
|
Loading…
Reference in New Issue
Block a user