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feat: Provide support for explicitly pausing autoscaling of ScaledJobs
--- Accreditation --- Original PR: #3828 Borrows from the work originally implemented by: https://github.com/keegancwinchester Note: I would have loved to have pulled the commit from the original branch, but I could not be able to. Documentation MR by original implementor: kedacore/keda-docs#932 --- Fixes --- Fixes # #3656 --- PR Notes --- Introduce annotation to pause ScaledJobs. Signed-off-by: BenJ <benjamin.jessop@fluxfederation.com>
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213 changes: 213 additions & 0 deletions
213
tests/internals/pause_scaledjob/pause_scaledjob_test.go
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,213 @@ | ||
| //go:build e2e | ||
| // +build e2e | ||
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| // go test -v -tags e2e ./internals/pause_scaledjob/pause_scaledjob_test.go | ||
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| package pause_scaledjob_test | ||
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| import ( | ||
| "context" | ||
| "fmt" | ||
| "testing" | ||
| "time" | ||
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| "github.com/stretchr/testify/assert" | ||
| metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" | ||
| "k8s.io/client-go/kubernetes" | ||
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| . "github.com/kedacore/keda/v2/tests/helper" | ||
| ) | ||
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| // Load environment variables from .env file | ||
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| const ( | ||
| testName = "pause-scaledjob-test" | ||
| ) | ||
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| var ( | ||
| testNamespace = fmt.Sprintf("%s-ns", testName) | ||
| serviceName = fmt.Sprintf("%s-service", testName) | ||
| scalerName = fmt.Sprintf("%s-scaler", testName) | ||
| scaledJobName = fmt.Sprintf("%s-sj", testName) | ||
| minReplicaCount = 0 | ||
| maxReplicaCount = 3 | ||
| iterationCountInitial = 15 | ||
| iterationCountLatter = 30 | ||
| ) | ||
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| type templateData struct { | ||
| TestNamespace string | ||
| ServiceName string | ||
| ScalerName string | ||
| ScaledJobName string | ||
| MinReplicaCount, MaxReplicaCount int | ||
| MetricThreshold, MetricValue int | ||
| } | ||
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| const ( | ||
| serviceTemplate = ` | ||
| apiVersion: v1 | ||
| kind: Service | ||
| metadata: | ||
| name: {{.ServiceName}} | ||
| namespace: {{.TestNamespace}} | ||
| spec: | ||
| ports: | ||
| - port: 6000 | ||
| targetPort: 6000 | ||
| selector: | ||
| app: {{.ScalerName}} | ||
| ` | ||
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| scalerTemplate = ` | ||
| apiVersion: apps/v1 | ||
| kind: Deployment | ||
| metadata: | ||
| name: {{.ScalerName}} | ||
| namespace: {{.TestNamespace}} | ||
| labels: | ||
| app: {{.ScalerName}} | ||
| spec: | ||
| replicas: 1 | ||
| selector: | ||
| matchLabels: | ||
| app: {{.ScalerName}} | ||
| template: | ||
| metadata: | ||
| labels: | ||
| app: {{.ScalerName}} | ||
| spec: | ||
| containers: | ||
| - name: scaler | ||
| image: ghcr.io/kedacore/tests-external-scaler-e2e:latest | ||
| imagePullPolicy: Always | ||
| ports: | ||
| - containerPort: 6000 | ||
| ` | ||
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| scaledJobTemplate = ` | ||
| apiVersion: keda.sh/v1alpha1 | ||
| kind: ScaledJob | ||
| metadata: | ||
| name: {{.ScaledJobName}} | ||
| namespace: {{.TestNamespace}} | ||
| spec: | ||
| pollingInterval: 5 | ||
| maxReplicaCount: {{.MaxReplicaCount}} | ||
| minReplicaCount: {{.MinReplicaCount}} | ||
| successfulJobsHistoryLimit: 0 | ||
| failedJobsHistoryLimit: 0 | ||
| jobTargetRef: | ||
| template: | ||
| spec: | ||
| containers: | ||
| - name: external-executor | ||
| image: busybox | ||
| command: | ||
| - sleep | ||
| - "15" | ||
| imagePullPolicy: IfNotPresent | ||
| restartPolicy: Never | ||
| backoffLimit: 1 | ||
| triggers: | ||
| - type: external | ||
| metadata: | ||
| scalerAddress: {{.ServiceName}}.{{.TestNamespace}}:6000 | ||
| metricThreshold: "{{.MetricThreshold}}" | ||
| metricValue: "{{.MetricValue}}" | ||
| ` | ||
| ) | ||
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| // Util function | ||
| func WaitForJobByFilterCountUntilIteration(t *testing.T, kc *kubernetes.Clientset, namespace string, | ||
| target, iterations, intervalSeconds int, listOptions metav1.ListOptions) bool { | ||
| var isTargetAchieved = false | ||
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| for i := 0; i < iterations; i++ { | ||
| jobList, _ := kc.BatchV1().Jobs(namespace).List(context.Background(), listOptions) | ||
| count := len(jobList.Items) | ||
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| t.Logf("Waiting for job count to hit target. Namespace - %s, Current - %d, Target - %d", | ||
| namespace, count, target) | ||
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| if count == target { | ||
| isTargetAchieved = true | ||
| } else { | ||
| isTargetAchieved = false | ||
| } | ||
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| time.Sleep(time.Duration(intervalSeconds) * time.Second) | ||
| } | ||
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| return isTargetAchieved | ||
| } | ||
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| func TestScaler(t *testing.T) { | ||
| // setup | ||
| t.Log("--- setting up ---") | ||
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| // Create kubernetes resources | ||
| kc := GetKubernetesClient(t) | ||
| metricValue := 1 | ||
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| data, templates := getTemplateData(metricValue) | ||
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| listOptions := metav1.ListOptions{ | ||
| FieldSelector: "status.successful=0", | ||
| } | ||
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| CreateKubernetesResources(t, kc, testNamespace, data, templates) | ||
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| assert.True(t, WaitForJobByFilterCountUntilIteration(t, kc, testNamespace, data.MetricThreshold, iterationCountInitial, 1, listOptions), | ||
| "job count should be %d after %d iterations", data.MetricThreshold, iterationCountInitial) | ||
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| // test scaling | ||
| testPause(t, kc, listOptions) | ||
| testUnpause(t, kc, data, listOptions) | ||
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| // cleanup | ||
| DeleteKubernetesResources(t, testNamespace, data, templates) | ||
| } | ||
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| func getTemplateData(metricValue int) (templateData, []Template) { | ||
| return templateData{ | ||
| TestNamespace: testNamespace, | ||
| ScaledJobName: scaledJobName, | ||
| ScalerName: scalerName, | ||
| ServiceName: serviceName, | ||
| MinReplicaCount: minReplicaCount, | ||
| MaxReplicaCount: maxReplicaCount, | ||
| MetricThreshold: 1, | ||
| MetricValue: metricValue, | ||
| }, []Template{ | ||
| {Name: "scalerTemplate", Config: scalerTemplate}, | ||
| {Name: "serviceTemplate", Config: serviceTemplate}, | ||
| {Name: "scaledJobTemplate", Config: scaledJobTemplate}, | ||
| } | ||
| } | ||
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| func testPause(t *testing.T, kc *kubernetes.Clientset, listOptions metav1.ListOptions) { | ||
| t.Log("--- testing Paused annotation ---") | ||
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| _, err := ExecuteCommand(fmt.Sprintf("kubectl annotate scaledjob %s autoscaling.keda.sh/paused=true --namespace %s", scaledJobName, testNamespace)) | ||
| assert.NoErrorf(t, err, "cannot execute command - %s", err) | ||
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| t.Log("job count does not change as job is paused") | ||
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| expectedTarget := 0 | ||
| assert.True(t, WaitForJobByFilterCountUntilIteration(t, kc, testNamespace, expectedTarget, iterationCountLatter, 1, listOptions), | ||
| "job count should be %d after %d iterations", expectedTarget, iterationCountLatter) | ||
| } | ||
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| func testUnpause(t *testing.T, kc *kubernetes.Clientset, data templateData, listOptions metav1.ListOptions) { | ||
| t.Log("--- testing removing Paused annotation ---") | ||
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| _, err := ExecuteCommand(fmt.Sprintf("kubectl annotate scaledjob %s autoscaling.keda.sh/paused- --namespace %s", scaledJobName, testNamespace)) | ||
| assert.NoErrorf(t, err, "cannot execute command - %s", err) | ||
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| t.Log("job count increases from zero as job is no longer paused") | ||
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| expectedTarget := data.MetricThreshold | ||
| assert.True(t, WaitForJobByFilterCountUntilIteration(t, kc, testNamespace, expectedTarget, iterationCountLatter, 1, listOptions), | ||
| "job count should be %d after %d iterations", expectedTarget, iterationCountLatter) | ||
| } |
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