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controllers: init container to decide allowing reconciliation of manager
manual cherry-pick of red-hat-storage#196 Signed-off-by: Leela Venkaiah G <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
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@@ -177,6 +177,7 @@ func (c *OperatorConfigMapReconciler) SetupWithManager(mgr ctrl.Manager) error { | |
| //+kubebuilder:rbac:groups=console.openshift.io,resources=consoleplugins,verbs=* | ||
| //+kubebuilder:rbac:groups=operators.coreos.com,resources=subscriptions,verbs=get;list;watch;update | ||
| //+kubebuilder:rbac:groups=admissionregistration.k8s.io,resources=validatingwebhookconfigurations,verbs=get;list;update;create;watch;delete | ||
| //+kubebuilder:rbac:groups=ocs.openshift.io,resources=storageclusters,verbs=get;list | ||
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| // For more details, check Reconcile and its Result here: | ||
| // - https://pkg.go.dev/sigs.k8s.io/[email protected]/pkg/reconcile | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,98 @@ | ||
| package main | ||
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| import ( | ||
| "context" | ||
| "os" | ||
| "time" | ||
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| "github.com/red-hat-storage/ocs-client-operator/pkg/utils" | ||
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| extv1 "k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1" | ||
| metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" | ||
| "k8s.io/apimachinery/pkg/runtime" | ||
| "k8s.io/apimachinery/pkg/runtime/schema" | ||
| "k8s.io/apimachinery/pkg/util/wait" | ||
| "k8s.io/klog/v2" | ||
| "sigs.k8s.io/controller-runtime/pkg/client" | ||
| "sigs.k8s.io/controller-runtime/pkg/client/config" | ||
| ) | ||
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| func main() { | ||
| // validations | ||
| operatorNamespace := os.Getenv(utils.OperatorNamespaceEnvVar) | ||
| if operatorNamespace == "" { | ||
| klog.Exitf("%s env var is empty", utils.OperatorNamespaceEnvVar) | ||
| } | ||
|
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| // creation of kube client | ||
| scheme := runtime.NewScheme() | ||
| cfg, err := config.GetConfig() | ||
| if err != nil { | ||
| klog.Exitf("Failed to get config: %v", err) | ||
| } | ||
| cl, err := client.New(cfg, client.Options{Scheme: scheme}) | ||
| if err != nil { | ||
| klog.Exitf("Failed to create controller runtime client: %v", err) | ||
| } | ||
| ctx := context.Background() | ||
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| storageClusterCRD := &metav1.PartialObjectMetadata{} | ||
| storageClusterCRD.SetGroupVersionKind( | ||
| extv1.SchemeGroupVersion.WithKind("CustomResourceDefinition"), | ||
| ) | ||
| storageClusterCRD.Name = "storageclusters.ocs.openshift.io" | ||
|
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| // delay exponentially from half a sec and cap at 2 minutes | ||
| delayFunc := wait.Backoff{ | ||
| Duration: 500 * time.Millisecond, | ||
| Factor: 2, | ||
| Jitter: 0.1, | ||
| Steps: 10, | ||
| Cap: 2 * time.Minute, | ||
| }.DelayFunc() | ||
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| for !allowOperatorToRun(ctx, cl, operatorNamespace) { | ||
| time.Sleep(delayFunc()) | ||
| } | ||
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| } | ||
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| func allowOperatorToRun(ctx context.Context, cl client.Client, namespace string) bool { | ||
| // verify presence of StorageCluster CRD | ||
| storageClusterCRD := &metav1.PartialObjectMetadata{} | ||
| storageClusterCRD.SetGroupVersionKind( | ||
| extv1.SchemeGroupVersion.WithKind("CustomResourceDefinition"), | ||
| ) | ||
| storageClusterCRD.Name = "storageclusters.ocs.openshift.io" | ||
| if err := cl.Get(ctx, client.ObjectKeyFromObject(storageClusterCRD), storageClusterCRD); client.IgnoreNotFound(err) != nil { | ||
| klog.Warning("Failed to find presence of StorageCluster CRD") | ||
| return false | ||
| } | ||
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| if storageClusterCRD.UID != "" { | ||
| // StorageCluster CRD exists, wait till StorageCluster CR is configured in Provider mode | ||
| storageClusters := &metav1.PartialObjectMetadataList{} | ||
| storageClusters.SetGroupVersionKind( | ||
| schema.GroupVersionKind{ | ||
| Group: "ocs.openshift.io", | ||
| Version: "v1", | ||
| Kind: "StorageCluster", | ||
| }, | ||
| ) | ||
| if err := cl.List(ctx, storageClusters, client.InNamespace(namespace), client.Limit(1)); err != nil { | ||
| klog.Warning("Failed to list StorageCluster CR") | ||
| return false | ||
| } | ||
| if len(storageClusters.Items) < 1 { | ||
| klog.Info("StorageCluster CR does not exist") | ||
| return false | ||
| } | ||
| klog.Info("Checking if StorageCluster indicates ODF is deployed in provider mode") | ||
| if storageClusters.Items[0].GetAnnotations()["ocs.openshift.io/deployment-mode"] != "provider" { | ||
| return false | ||
| } | ||
| } | ||
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| klog.Info("Condition met to allow operator to run") | ||
| return true | ||
| } |