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Merge pull request #743 from whereswaldon/SDCICD-577
Use healthcheck cron job to determine cluster readiness
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,71 @@ | ||
| package healthchecks | ||
|
|
||
| import ( | ||
| "context" | ||
| "fmt" | ||
| "log" | ||
|
|
||
| "github.com/openshift/osde2e/pkg/common/logging" | ||
| batchv1 "k8s.io/api/batch/v1" | ||
| metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" | ||
| "k8s.io/apimachinery/pkg/watch" | ||
| "k8s.io/client-go/kubernetes" | ||
| ) | ||
|
|
||
| // CheckHealthcheckJob uses the `osd-cluster-ready` healthcheck job to determine cluster readiness. If the cluster | ||
| // is not ready, it will return an error. | ||
| func CheckHealthcheckJob(k8sClient *kubernetes.Clientset, ctx context.Context, logger *log.Logger) error { | ||
| logger = logging.CreateNewStdLoggerOrUseExistingLogger(logger) | ||
|
|
||
| logger.Print("Checking whether cluster is healthy before proceeding...") | ||
|
|
||
| bv1C := k8sClient.BatchV1() | ||
| namespace := "openshift-monitoring" | ||
| name := "osd-cluster-ready" | ||
| jobs, err := bv1C.Jobs(namespace).List(ctx, metav1.ListOptions{}) | ||
| if err != nil { | ||
| return fmt.Errorf("failed listing jobs: %w", err) | ||
| } | ||
| for _, job := range jobs.Items { | ||
| if job.Name != name { | ||
| continue | ||
| } | ||
| if job.Status.Succeeded > 0 { | ||
| log.Println("Healthcheck job has already succeeded") | ||
| return nil | ||
| } | ||
| log.Println("Healthcheck job has not yet succeeded, watching...") | ||
| } | ||
| watcher, err := bv1C.Jobs(namespace).Watch(ctx, metav1.ListOptions{ | ||
| ResourceVersion: jobs.ResourceVersion, | ||
| FieldSelector: "metadata.name=osd-cluster-ready", | ||
| }) | ||
| if err != nil { | ||
| return fmt.Errorf("failed watching job: %w", err) | ||
| } | ||
| for { | ||
| select { | ||
| case event := <-watcher.ResultChan(): | ||
| switch event.Type { | ||
| case watch.Added: | ||
| fallthrough | ||
| case watch.Modified: | ||
| job := event.Object.(*batchv1.Job) | ||
| if job.Status.Succeeded > 0 { | ||
| return nil | ||
| } | ||
| if job.Status.Failed > 0 { | ||
| return fmt.Errorf("cluster readiness job failed") | ||
| } | ||
| case watch.Deleted: | ||
| return fmt.Errorf("cluster readiness job deleted before becoming ready (this should never happen)") | ||
| case watch.Error: | ||
| return fmt.Errorf("watch returned error event: %v", event) | ||
| default: | ||
| logger.Printf("Unrecognized event type while watching for healthcheck job updates: %v", event.Type) | ||
| } | ||
| case <-ctx.Done(): | ||
| return fmt.Errorf("healtcheck watch context cancelled while still waiting for success") | ||
| } | ||
| } | ||
| } |
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