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How to use Calc method of metrics Package

Best K6 code snippet using metrics.Calc

replica_calculator_test.go

Source:replica_calculator_test.go

...50	singleObject *autoscalingv2.CrossVersionObjectReference51	targetUtilization   int6452	expectedUtilization int6453}54type replicaCalcTestCase struct {55	currentReplicas  int3256	expectedReplicas int3257	expectedError    error58	timestamp time.Time59	resource *resourceInfo60	metric   *metricInfo61	podReadiness []v1.ConditionStatus62}63const (64	testNamespace       = "test-namespace"65	podNamePrefix       = "test-pod"66	numContainersPerPod = 267)68func (tc *replicaCalcTestCase) prepareTestClient(t *testing.T) (*fake.Clientset, *metricsfake.Clientset, *cmfake.FakeCustomMetricsClient) {69	fakeClient := &fake.Clientset{}70	fakeClient.AddReactor("list", "pods", func(action core.Action) (handled bool, ret runtime.Object, err error) {71		obj := &v1.PodList{}72		for i := 0; i < int(tc.currentReplicas); i++ {73			podReadiness := v1.ConditionTrue74			if tc.podReadiness != nil {75				podReadiness = tc.podReadiness[i]76			}77			podName := fmt.Sprintf("%s-%d", podNamePrefix, i)78			pod := v1.Pod{79				Status: v1.PodStatus{80					Phase: v1.PodRunning,81					Conditions: []v1.PodCondition{82						{83							Type:   v1.PodReady,84							Status: podReadiness,85						},86					},87				},88				ObjectMeta: metav1.ObjectMeta{89					Name:      podName,90					Namespace: testNamespace,91					Labels: map[string]string{92						"name": podNamePrefix,93					},94				},95				Spec: v1.PodSpec{96					Containers: []v1.Container{{}, {}},97				},98			}99			if tc.resource != nil && i < len(tc.resource.requests) {100				pod.Spec.Containers[0].Resources = v1.ResourceRequirements{101					Requests: v1.ResourceList{102						tc.resource.name: tc.resource.requests[i],103					},104				}105				pod.Spec.Containers[1].Resources = v1.ResourceRequirements{106					Requests: v1.ResourceList{107						tc.resource.name: tc.resource.requests[i],108					},109				}110			}111			obj.Items = append(obj.Items, pod)112		}113		return true, obj, nil114	})115	fakeMetricsClient := &metricsfake.Clientset{}116	// NB: we have to sound like Gollum due to gengo's inability to handle already-plural resource names117	fakeMetricsClient.AddReactor("list", "pods", func(action core.Action) (handled bool, ret runtime.Object, err error) {118		if tc.resource != nil {119			metrics := &metricsapi.PodMetricsList{}120			for i, resValue := range tc.resource.levels {121				podName := fmt.Sprintf("%s-%d", podNamePrefix, i)122				if len(tc.resource.podNames) > i {123					podName = tc.resource.podNames[i]124				}125				// NB: the list reactor actually does label selector filtering for us,126				// so we have to make sure our results match the label selector127				podMetric := metricsapi.PodMetrics{128					ObjectMeta: metav1.ObjectMeta{129						Name:      podName,130						Namespace: testNamespace,131						Labels:    map[string]string{"name": podNamePrefix},132					},133					Timestamp:  metav1.Time{Time: tc.timestamp},134					Containers: make([]metricsapi.ContainerMetrics, numContainersPerPod),135				}136				for i := 0; i < numContainersPerPod; i++ {137					podMetric.Containers[i] = metricsapi.ContainerMetrics{138						Name: fmt.Sprintf("container%v", i),139						Usage: clientv1.ResourceList{140							clientv1.ResourceName(tc.resource.name): *resource.NewMilliQuantity(141								int64(resValue),142								resource.DecimalSI),143						},144					}145				}146				metrics.Items = append(metrics.Items, podMetric)147			}148			return true, metrics, nil149		}150		return true, nil, fmt.Errorf("no pod resource metrics specified in test client")151	})152	fakeCMClient := &cmfake.FakeCustomMetricsClient{}153	fakeCMClient.AddReactor("get", "*", func(action core.Action) (handled bool, ret runtime.Object, err error) {154		getForAction, wasGetFor := action.(cmfake.GetForAction)155		if !wasGetFor {156			return true, nil, fmt.Errorf("expected a get-for action, got %v instead", action)157		}158		if tc.metric == nil {159			return true, nil, fmt.Errorf("no custom metrics specified in test client")160		}161		assert.Equal(t, tc.metric.name, getForAction.GetMetricName(), "the metric requested should have matched the one specified")162		if getForAction.GetName() == "*" {163			metrics := cmapi.MetricValueList{}164			// multiple objects165			assert.Equal(t, "pods", getForAction.GetResource().Resource, "the type of object that we requested multiple metrics for should have been pods")166			for i, level := range tc.metric.levels {167				podMetric := cmapi.MetricValue{168					DescribedObject: clientv1.ObjectReference{169						Kind:      "Pod",170						Name:      fmt.Sprintf("%s-%d", podNamePrefix, i),171						Namespace: testNamespace,172					},173					Timestamp:  metav1.Time{Time: tc.timestamp},174					MetricName: tc.metric.name,175					Value:      *resource.NewMilliQuantity(level, resource.DecimalSI),176				}177				metrics.Items = append(metrics.Items, podMetric)178			}179			return true, &metrics, nil180		} else {181			name := getForAction.GetName()182			mapper := api.Registry.RESTMapper()183			metrics := &cmapi.MetricValueList{}184			assert.NotNil(t, tc.metric.singleObject, "should have only requested a single-object metric when calling GetObjectMetricReplicas")185			gk := schema.FromAPIVersionAndKind(tc.metric.singleObject.APIVersion, tc.metric.singleObject.Kind).GroupKind()186			mapping, err := mapper.RESTMapping(gk)187			if err != nil {188				return true, nil, fmt.Errorf("unable to get mapping for %s: %v", gk.String(), err)189			}190			groupResource := schema.GroupResource{Group: mapping.GroupVersionKind.Group, Resource: mapping.Resource}191			assert.Equal(t, groupResource.String(), getForAction.GetResource().Resource, "should have requested metrics for the resource matching the GroupKind passed in")192			assert.Equal(t, tc.metric.singleObject.Name, name, "should have requested metrics for the object matching the name passed in")193			metrics.Items = []cmapi.MetricValue{194				{195					DescribedObject: clientv1.ObjectReference{196						Kind:       tc.metric.singleObject.Kind,197						APIVersion: tc.metric.singleObject.APIVersion,198						Name:       name,199					},200					Timestamp:  metav1.Time{Time: tc.timestamp},201					MetricName: tc.metric.name,202					Value:      *resource.NewMilliQuantity(int64(tc.metric.levels[0]), resource.DecimalSI),203				},204			}205			return true, metrics, nil206		}207	})208	return fakeClient, fakeMetricsClient, fakeCMClient209}210func (tc *replicaCalcTestCase) runTest(t *testing.T) {211	testClient, testMetricsClient, testCMClient := tc.prepareTestClient(t)212	metricsClient := metrics.NewRESTMetricsClient(testMetricsClient.MetricsV1alpha1(), testCMClient)213	replicaCalc := &ReplicaCalculator{214		metricsClient: metricsClient,215		podsGetter:    testClient.Core(),216	}217	selector, err := metav1.LabelSelectorAsSelector(&metav1.LabelSelector{218		MatchLabels: map[string]string{"name": podNamePrefix},219	})220	if err != nil {221		require.Nil(t, err, "something went horribly wrong...")222	}223	if tc.resource != nil {224		outReplicas, outUtilization, outRawValue, outTimestamp, err := replicaCalc.GetResourceReplicas(tc.currentReplicas, tc.resource.targetUtilization, tc.resource.name, testNamespace, selector)225		if tc.expectedError != nil {226			require.Error(t, err, "there should be an error calculating the replica count")227			assert.Contains(t, err.Error(), tc.expectedError.Error(), "the error message should have contained the expected error message")228			return229		}230		require.NoError(t, err, "there should not have been an error calculating the replica count")231		assert.Equal(t, tc.expectedReplicas, outReplicas, "replicas should be as expected")232		assert.Equal(t, tc.resource.expectedUtilization, outUtilization, "utilization should be as expected")233		assert.Equal(t, tc.resource.expectedValue, outRawValue, "raw value should be as expected")234		assert.True(t, tc.timestamp.Equal(outTimestamp), "timestamp should be as expected")235	} else {236		var outReplicas int32237		var outUtilization int64238		var outTimestamp time.Time239		var err error240		if tc.metric.singleObject != nil {241			outReplicas, outUtilization, outTimestamp, err = replicaCalc.GetObjectMetricReplicas(tc.currentReplicas, tc.metric.targetUtilization, tc.metric.name, testNamespace, tc.metric.singleObject)242		} else {243			outReplicas, outUtilization, outTimestamp, err = replicaCalc.GetMetricReplicas(tc.currentReplicas, tc.metric.targetUtilization, tc.metric.name, testNamespace, selector)244		}245		if tc.expectedError != nil {246			require.Error(t, err, "there should be an error calculating the replica count")247			assert.Contains(t, err.Error(), tc.expectedError.Error(), "the error message should have contained the expected error message")248			return249		}250		require.NoError(t, err, "there should not have been an error calculating the replica count")251		assert.Equal(t, tc.expectedReplicas, outReplicas, "replicas should be as expected")252		assert.Equal(t, tc.metric.expectedUtilization, outUtilization, "utilization should be as expected")253		assert.True(t, tc.timestamp.Equal(outTimestamp), "timestamp should be as expected")254	}255}256func TestReplicaCalcDisjointResourcesMetrics(t *testing.T) {257	tc := replicaCalcTestCase{258		currentReplicas: 1,259		expectedError:   fmt.Errorf("no metrics returned matched known pods"),260		resource: &resourceInfo{261			name:     v1.ResourceCPU,262			requests: []resource.Quantity{resource.MustParse("1.0")},263			levels:   []int64{100},264			podNames: []string{"an-older-pod-name"},265			targetUtilization: 100,266		},267	}268	tc.runTest(t)269}270func TestReplicaCalcScaleUp(t *testing.T) {271	tc := replicaCalcTestCase{272		currentReplicas:  3,273		expectedReplicas: 5,274		resource: &resourceInfo{275			name:     v1.ResourceCPU,276			requests: []resource.Quantity{resource.MustParse("1.0"), resource.MustParse("1.0"), resource.MustParse("1.0")},277			levels:   []int64{300, 500, 700},278			targetUtilization:   30,279			expectedUtilization: 50,280			expectedValue:       numContainersPerPod * 500,281		},282	}283	tc.runTest(t)284}285func TestReplicaCalcScaleUpUnreadyLessScale(t *testing.T) {286	tc := replicaCalcTestCase{287		currentReplicas:  3,288		expectedReplicas: 4,289		podReadiness:     []v1.ConditionStatus{v1.ConditionFalse, v1.ConditionTrue, v1.ConditionTrue},290		resource: &resourceInfo{291			name:     v1.ResourceCPU,292			requests: []resource.Quantity{resource.MustParse("1.0"), resource.MustParse("1.0"), resource.MustParse("1.0")},293			levels:   []int64{300, 500, 700},294			targetUtilization:   30,295			expectedUtilization: 60,296			expectedValue:       numContainersPerPod * 600,297		},298	}299	tc.runTest(t)300}301func TestReplicaCalcScaleUpUnreadyNoScale(t *testing.T) {302	tc := replicaCalcTestCase{303		currentReplicas:  3,304		expectedReplicas: 3,305		podReadiness:     []v1.ConditionStatus{v1.ConditionTrue, v1.ConditionFalse, v1.ConditionFalse},306		resource: &resourceInfo{307			name:     v1.ResourceCPU,308			requests: []resource.Quantity{resource.MustParse("1.0"), resource.MustParse("1.0"), resource.MustParse("1.0")},309			levels:   []int64{400, 500, 700},310			targetUtilization:   30,311			expectedUtilization: 40,312			expectedValue:       numContainersPerPod * 400,313		},314	}315	tc.runTest(t)316}317func TestReplicaCalcScaleUpCM(t *testing.T) {318	tc := replicaCalcTestCase{319		currentReplicas:  3,320		expectedReplicas: 4,321		metric: &metricInfo{322			name:                "qps",323			levels:              []int64{20000, 10000, 30000},324			targetUtilization:   15000,325			expectedUtilization: 20000,326		},327	}328	tc.runTest(t)329}330func TestReplicaCalcScaleUpCMUnreadyLessScale(t *testing.T) {331	tc := replicaCalcTestCase{332		currentReplicas:  3,333		expectedReplicas: 4,334		podReadiness:     []v1.ConditionStatus{v1.ConditionTrue, v1.ConditionTrue, v1.ConditionFalse},335		metric: &metricInfo{336			name:                "qps",337			levels:              []int64{50000, 10000, 30000},338			targetUtilization:   15000,339			expectedUtilization: 30000,340		},341	}342	tc.runTest(t)343}344func TestReplicaCalcScaleUpCMUnreadyNoScaleWouldScaleDown(t *testing.T) {345	tc := replicaCalcTestCase{346		currentReplicas:  3,347		expectedReplicas: 3,348		podReadiness:     []v1.ConditionStatus{v1.ConditionFalse, v1.ConditionTrue, v1.ConditionFalse},349		metric: &metricInfo{350			name:                "qps",351			levels:              []int64{50000, 15000, 30000},352			targetUtilization:   15000,353			expectedUtilization: 15000,354		},355	}356	tc.runTest(t)357}358func TestReplicaCalcScaleUpCMObject(t *testing.T) {359	tc := replicaCalcTestCase{360		currentReplicas:  3,361		expectedReplicas: 4,362		metric: &metricInfo{363			name:                "qps",364			levels:              []int64{20000},365			targetUtilization:   15000,366			expectedUtilization: 20000,367			singleObject: &autoscalingv2.CrossVersionObjectReference{368				Kind:       "Deployment",369				APIVersion: "extensions/v1beta1",370				Name:       "some-deployment",371			},372		},373	}374	tc.runTest(t)375}376func TestReplicaCalcScaleDown(t *testing.T) {377	tc := replicaCalcTestCase{378		currentReplicas:  5,379		expectedReplicas: 3,380		resource: &resourceInfo{381			name:     v1.ResourceCPU,382			requests: []resource.Quantity{resource.MustParse("1.0"), resource.MustParse("1.0"), resource.MustParse("1.0"), resource.MustParse("1.0"), resource.MustParse("1.0")},383			levels:   []int64{100, 300, 500, 250, 250},384			targetUtilization:   50,385			expectedUtilization: 28,386			expectedValue:       numContainersPerPod * 280,387		},388	}389	tc.runTest(t)390}391func TestReplicaCalcScaleDownCM(t *testing.T) {392	tc := replicaCalcTestCase{393		currentReplicas:  5,394		expectedReplicas: 3,395		metric: &metricInfo{396			name:                "qps",397			levels:              []int64{12000, 12000, 12000, 12000, 12000},398			targetUtilization:   20000,399			expectedUtilization: 12000,400		},401	}402	tc.runTest(t)403}404func TestReplicaCalcScaleDownCMObject(t *testing.T) {405	tc := replicaCalcTestCase{406		currentReplicas:  5,407		expectedReplicas: 3,408		metric: &metricInfo{409			name:                "qps",410			levels:              []int64{12000},411			targetUtilization:   20000,412			expectedUtilization: 12000,413			singleObject: &autoscalingv2.CrossVersionObjectReference{414				Kind:       "Deployment",415				APIVersion: "extensions/v1beta1",416				Name:       "some-deployment",417			},418		},419	}420	tc.runTest(t)421}422func TestReplicaCalcScaleDownIgnoresUnreadyPods(t *testing.T) {423	tc := replicaCalcTestCase{424		currentReplicas:  5,425		expectedReplicas: 2,426		podReadiness:     []v1.ConditionStatus{v1.ConditionTrue, v1.ConditionTrue, v1.ConditionTrue, v1.ConditionFalse, v1.ConditionFalse},427		resource: &resourceInfo{428			name:     v1.ResourceCPU,429			requests: []resource.Quantity{resource.MustParse("1.0"), resource.MustParse("1.0"), resource.MustParse("1.0"), resource.MustParse("1.0"), resource.MustParse("1.0")},430			levels:   []int64{100, 300, 500, 250, 250},431			targetUtilization:   50,432			expectedUtilization: 30,433			expectedValue:       numContainersPerPod * 300,434		},435	}436	tc.runTest(t)437}438func TestReplicaCalcTolerance(t *testing.T) {439	tc := replicaCalcTestCase{440		currentReplicas:  3,441		expectedReplicas: 3,442		resource: &resourceInfo{443			name:     v1.ResourceCPU,444			requests: []resource.Quantity{resource.MustParse("0.9"), resource.MustParse("1.0"), resource.MustParse("1.1")},445			levels:   []int64{1010, 1030, 1020},446			targetUtilization:   100,447			expectedUtilization: 102,448			expectedValue:       numContainersPerPod * 1020,449		},450	}451	tc.runTest(t)452}453func TestReplicaCalcToleranceCM(t *testing.T) {454	tc := replicaCalcTestCase{455		currentReplicas:  3,456		expectedReplicas: 3,457		metric: &metricInfo{458			name:                "qps",459			levels:              []int64{20000, 21000, 21000},460			targetUtilization:   20000,461			expectedUtilization: 20666,462		},463	}464	tc.runTest(t)465}466func TestReplicaCalcToleranceCMObject(t *testing.T) {467	tc := replicaCalcTestCase{468		currentReplicas:  3,469		expectedReplicas: 3,470		metric: &metricInfo{471			name:                "qps",472			levels:              []int64{20666},473			targetUtilization:   20000,474			expectedUtilization: 20666,475			singleObject: &autoscalingv2.CrossVersionObjectReference{476				Kind:       "Deployment",477				APIVersion: "extensions/v1beta1",478				Name:       "some-deployment",479			},480		},481	}482	tc.runTest(t)483}484func TestReplicaCalcSuperfluousMetrics(t *testing.T) {485	tc := replicaCalcTestCase{486		currentReplicas:  4,487		expectedReplicas: 24,488		resource: &resourceInfo{489			name:                v1.ResourceCPU,490			requests:            []resource.Quantity{resource.MustParse("1.0"), resource.MustParse("1.0"), resource.MustParse("1.0"), resource.MustParse("1.0")},491			levels:              []int64{4000, 9500, 3000, 7000, 3200, 2000},492			targetUtilization:   100,493			expectedUtilization: 587,494			expectedValue:       numContainersPerPod * 5875,495		},496	}497	tc.runTest(t)498}499func TestReplicaCalcMissingMetrics(t *testing.T) {500	tc := replicaCalcTestCase{501		currentReplicas:  4,502		expectedReplicas: 3,503		resource: &resourceInfo{504			name:     v1.ResourceCPU,505			requests: []resource.Quantity{resource.MustParse("1.0"), resource.MustParse("1.0"), resource.MustParse("1.0"), resource.MustParse("1.0")},506			levels:   []int64{400, 95},507			targetUtilization:   100,508			expectedUtilization: 24,509			expectedValue:       495, // numContainersPerPod * 247, for sufficiently large values of 247510		},511	}512	tc.runTest(t)513}514func TestReplicaCalcEmptyMetrics(t *testing.T) {515	tc := replicaCalcTestCase{516		currentReplicas: 4,517		expectedError:   fmt.Errorf("unable to get metrics for resource cpu: no metrics returned from heapster"),518		resource: &resourceInfo{519			name:     v1.ResourceCPU,520			requests: []resource.Quantity{resource.MustParse("1.0"), resource.MustParse("1.0"), resource.MustParse("1.0")},521			levels:   []int64{},522			targetUtilization: 100,523		},524	}525	tc.runTest(t)526}527func TestReplicaCalcEmptyCPURequest(t *testing.T) {528	tc := replicaCalcTestCase{529		currentReplicas: 1,530		expectedError:   fmt.Errorf("missing request for"),531		resource: &resourceInfo{532			name:     v1.ResourceCPU,533			requests: []resource.Quantity{},534			levels:   []int64{200},535			targetUtilization: 100,536		},537	}538	tc.runTest(t)539}540func TestReplicaCalcMissingMetricsNoChangeEq(t *testing.T) {541	tc := replicaCalcTestCase{542		currentReplicas:  2,543		expectedReplicas: 2,544		resource: &resourceInfo{545			name:     v1.ResourceCPU,546			requests: []resource.Quantity{resource.MustParse("1.0"), resource.MustParse("1.0")},547			levels:   []int64{1000},548			targetUtilization:   100,549			expectedUtilization: 100,550			expectedValue:       numContainersPerPod * 1000,551		},552	}553	tc.runTest(t)554}555func TestReplicaCalcMissingMetricsNoChangeGt(t *testing.T) {556	tc := replicaCalcTestCase{557		currentReplicas:  2,558		expectedReplicas: 2,559		resource: &resourceInfo{560			name:     v1.ResourceCPU,561			requests: []resource.Quantity{resource.MustParse("1.0"), resource.MustParse("1.0")},562			levels:   []int64{1900},563			targetUtilization:   100,564			expectedUtilization: 190,565			expectedValue:       numContainersPerPod * 1900,566		},567	}568	tc.runTest(t)569}570func TestReplicaCalcMissingMetricsNoChangeLt(t *testing.T) {571	tc := replicaCalcTestCase{572		currentReplicas:  2,573		expectedReplicas: 2,574		resource: &resourceInfo{575			name:     v1.ResourceCPU,576			requests: []resource.Quantity{resource.MustParse("1.0"), resource.MustParse("1.0")},577			levels:   []int64{600},578			targetUtilization:   100,579			expectedUtilization: 60,580			expectedValue:       numContainersPerPod * 600,581		},582	}583	tc.runTest(t)584}585func TestReplicaCalcMissingMetricsUnreadyNoChange(t *testing.T) {586	tc := replicaCalcTestCase{587		currentReplicas:  3,588		expectedReplicas: 3,589		podReadiness:     []v1.ConditionStatus{v1.ConditionFalse, v1.ConditionTrue, v1.ConditionTrue},590		resource: &resourceInfo{591			name:     v1.ResourceCPU,592			requests: []resource.Quantity{resource.MustParse("1.0"), resource.MustParse("1.0"), resource.MustParse("1.0")},593			levels:   []int64{100, 450},594			targetUtilization:   50,595			expectedUtilization: 45,596			expectedValue:       numContainersPerPod * 450,597		},598	}599	tc.runTest(t)600}601func TestReplicaCalcMissingMetricsUnreadyScaleUp(t *testing.T) {602	tc := replicaCalcTestCase{603		currentReplicas:  3,604		expectedReplicas: 4,605		podReadiness:     []v1.ConditionStatus{v1.ConditionFalse, v1.ConditionTrue, v1.ConditionTrue},606		resource: &resourceInfo{607			name:     v1.ResourceCPU,608			requests: []resource.Quantity{resource.MustParse("1.0"), resource.MustParse("1.0"), resource.MustParse("1.0")},609			levels:   []int64{100, 2000},610			targetUtilization:   50,611			expectedUtilization: 200,612			expectedValue:       numContainersPerPod * 2000,613		},614	}615	tc.runTest(t)616}617func TestReplicaCalcMissingMetricsUnreadyScaleDown(t *testing.T) {618	tc := replicaCalcTestCase{619		currentReplicas:  4,620		expectedReplicas: 3,621		podReadiness:     []v1.ConditionStatus{v1.ConditionFalse, v1.ConditionTrue, v1.ConditionTrue, v1.ConditionTrue},622		resource: &resourceInfo{623			name:     v1.ResourceCPU,624			requests: []resource.Quantity{resource.MustParse("1.0"), resource.MustParse("1.0"), resource.MustParse("1.0"), resource.MustParse("1.0")},625			levels:   []int64{100, 100, 100},626			targetUtilization:   50,627			expectedUtilization: 10,628			expectedValue:       numContainersPerPod * 100,629		},630	}631	tc.runTest(t)632}633// TestComputedToleranceAlgImplementation is a regression test which634// back-calculates a minimal percentage for downscaling based on a small percentage635// increase in pod utilization which is calibrated against the tolerance value.636func TestReplicaCalcComputedToleranceAlgImplementation(t *testing.T) {637	startPods := int32(10)638	// 150 mCPU per pod.639	totalUsedCPUOfAllPods := int64(startPods * 150)640	// Each pod starts out asking for 2X what is really needed.641	// This means we will have a 50% ratio of used/requested642	totalRequestedCPUOfAllPods := int32(2 * totalUsedCPUOfAllPods)643	requestedToUsed := float64(totalRequestedCPUOfAllPods / int32(totalUsedCPUOfAllPods))644	// Spread the amount we ask over 10 pods.  We can add some jitter later in reportedLevels.645	perPodRequested := totalRequestedCPUOfAllPods / startPods646	// Force a minimal scaling event by satisfying  (tolerance < 1 - resourcesUsedRatio).647	target := math.Abs(1/(requestedToUsed*(1-tolerance))) + .01648	finalCpuPercentTarget := int32(target * 100)649	resourcesUsedRatio := float64(totalUsedCPUOfAllPods) / float64(float64(totalRequestedCPUOfAllPods)*target)650	// i.e. .60 * 20 -> scaled down expectation.651	finalPods := int32(math.Ceil(resourcesUsedRatio * float64(startPods)))652	// To breach tolerance we will create a utilization ratio difference of tolerance to usageRatioToleranceValue)653	tc := replicaCalcTestCase{654		currentReplicas:  startPods,655		expectedReplicas: finalPods,656		resource: &resourceInfo{657			name: v1.ResourceCPU,658			levels: []int64{659				totalUsedCPUOfAllPods / 10,660				totalUsedCPUOfAllPods / 10,661				totalUsedCPUOfAllPods / 10,662				totalUsedCPUOfAllPods / 10,663				totalUsedCPUOfAllPods / 10,664				totalUsedCPUOfAllPods / 10,665				totalUsedCPUOfAllPods / 10,666				totalUsedCPUOfAllPods / 10,667				totalUsedCPUOfAllPods / 10,...

Calc

Using AI Code Generation

1import (2func main() {3	c := metrics.New(10.0, 20.0)4	fmt.Println(c.Calc())5}6import (7func main() {8	c := metrics.New(10.0, 20.0)9	fmt.Println(c.Calc())10}11import (12func main() {13	c := metrics.New(10.0, 20.0)14	fmt.Println(c.Calc())15}16import (17func main() {18	c := metrics.New(10.0, 20.0)19	fmt.Println(c.Calc())20}21import (22func main() {23	c := metrics.New(10.0, 20.0)24	fmt.Println(c.Calc())25}26import (27func main() {28	c := metrics.New(10.0, 20.0)29	fmt.Println(c.Calc())30}31import (32func main() {33	c := metrics.New(10.0, 20.0)34	fmt.Println(c.Calc())35}36import (37func main() {38	c := metrics.New(10.0, 20.0)39	fmt.Println(c.Calc())40}41import (42func main() {43	c := metrics.New(10.0, 20.0)44	fmt.Println(c.Calc())45}

Calc

Using AI Code Generation

1import (2func main() {3    fmt.Println(stringutil.Reverse("Hello, world."))4}5import (6func main() {7    fmt.Println(stringutil.Reverse("Hello, world."))8}9import (10func main() {11    beego.Run()12}13    /usr/local/go/src/github.com/astaxie/beego (from $GOROOT)14    /home/username/go/src/github.com/astaxie/beego (from $GOPATH)15import (16func main() {17    beego.Run()18}19    /usr/local/go/src/github.com/astaxie/beego (from $GOROOT)

Calc

Using AI Code Generation

1import (2func main() {3	fmt.Println("Hello World")4	m := metrics.New(3.14, 10.0)5	fmt.Println(m.Area())6	fmt.Println(m.Perimeter())7}8We can also import the metrics package as follows:9import (10In the above example, we have imported the metrics package and renamed it to metrics. This helps us to avoid the name collision with other packages. We can now use the Calc method of the metrics package as follows:11fmt.Println(metrics.Calc(3.14, 10.0))12In the above example, we have imported the metrics package and renamed it to metrics. This helps us to avoid the name collision with other packages. We can now use the Calc method of the metrics package as follows:13fmt.Println(metrics.Calc(3.14, 10.0))14In the above example, we have imported the metrics package and renamed it to metrics. This helps us to avoid the name collision with other packages. We can now use the Calc method of the metrics package as follows:15fmt.Println(metrics.Calc(3.14, 10.0))16In the above example, we have imported the metrics package and renamed it to metrics. This helps us to avoid the name collision with other packages. We can now use the Calc method of the metrics package as follows:17fmt.Println(metrics.Calc(3.14, 10.0))18In the above example, we have imported the metrics package and renamed it to metrics. This helps us to avoid the name collision with other packages. We can now use the Calc method of the metrics package as follows:19fmt.Println(metrics.Calc(3.14, 10.0))

Calc

Using AI Code Generation

1import "fmt"2import "metrics"3func main() {4    fmt.Println("Hello World")5    fmt.Println(metrics.Calc(10, 5))6}7func Calc(x int, y int) int {8}9func Calc(x int, y int) int {10}11./1.go:3:2: imported and not used: "fmt"12import "fmt"13import "calc"14func main() {15    fmt.Println("Hello World")16    fmt.Println(calc.Calc(10, 5))17}18import "fmt"19import _ "calc"20func main() {21    fmt.Println("Hello World")22}

Calc

Using AI Code Generation

1import (2func main() {3    fmt.Println("Hello from main")4    fmt.Println("Result is ", metrics.Calc(5, 2))5}6import (7func main() {8    fmt.Println("Hello from main")9    fmt.Println("Result is ", metrics.Calc(5, 2))10}11import (12func main() {13    fmt.Println("Hello from main")14    fmt.Println("Result is ", metrics.Calc(5, 2))15}16import (17func main() {18    fmt.Println("Hello from main")19    fmt.Println("Result is ", metrics.Calc(5, 2))20}21import (22func main() {23    fmt.Println("Hello from main")24    fmt.Println("Result is ", metrics.Calc(5, 2))25}26import (27func main() {28    fmt.Println("Hello from main")29    fmt.Println("Result is ", metrics.Calc(5, 2))30}31import (32func main() {33    fmt.Println("Hello from main")34    fmt.Println("Result is ", metrics.Calc(5, 2))35}36import (37func main() {38    fmt.Println("

Calc

Using AI Code Generation

1import (2func main() {3    fmt.Println(metrics.Calc(10, 20))4}5import (6func main() {7    fmt.Println(metrics.Calc(100, 200))8}9import (10func main() {11    fmt.Println(metrics.Calc(10, 20))12}13import (14func main() {15    fmt.Println(metrics.Calc(100, 200))16}

Calc

Using AI Code Generation

1import "fmt"2import "github.com/rahul-golang/rahulmetrics"3func main() {4  result = m.Calc(10, 5)5  fmt.Println("Result is ", result)6}

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