/
register.go
96 lines (87 loc) · 2.56 KB
/
register.go
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package nodeclass
import (
"fmt"
"reflect"
"time"
"github.com/kube-node/nodeset/pkg/nodeset/v1alpha1"
apiextensionsv1beta1 "k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1beta1"
apiextensionsclient "k8s.io/apiextensions-apiserver/pkg/client/clientset/clientset"
kerrors "k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/util/errors"
"k8s.io/apimachinery/pkg/util/wait"
)
func EnsureCustomResourceDefinitions(clientset apiextensionsclient.Interface) error {
type resource struct {
plural string
kind string
}
resourceNames := []resource{
{
plural: v1alpha1.NodeSetResourcePlural,
kind: reflect.TypeOf(v1alpha1.NodeSet{}).Name(),
},
{
plural: v1alpha1.NodeClassResourcePlural,
kind: reflect.TypeOf(v1alpha1.NodeClass{}).Name(),
},
}
for _, res := range resourceNames {
if err := createCustomResourceDefinition(res.plural, res.kind, clientset); err != nil {
return err
}
}
return nil
}
func createCustomResourceDefinition(plural, kind string, clientset apiextensionsclient.Interface) error {
name := plural + "." + v1alpha1.GroupName
crd := &apiextensionsv1beta1.CustomResourceDefinition{
ObjectMeta: metav1.ObjectMeta{
Name: name,
},
Spec: apiextensionsv1beta1.CustomResourceDefinitionSpec{
Group: v1alpha1.GroupName,
Version: v1alpha1.SchemeGroupVersion.Version,
Scope: apiextensionsv1beta1.ClusterScoped,
Names: apiextensionsv1beta1.CustomResourceDefinitionNames{
Plural: plural,
Kind: kind,
},
},
}
_, err := clientset.ApiextensionsV1beta1().CustomResourceDefinitions().Create(crd)
if err != nil {
if kerrors.IsAlreadyExists(err) {
return nil
}
return err
}
// wait for CRD being established
err = wait.Poll(500*time.Millisecond, 60*time.Second, func() (bool, error) {
crd, err = clientset.ApiextensionsV1beta1().CustomResourceDefinitions().Get(name, metav1.GetOptions{})
if err != nil {
return false, err
}
for _, cond := range crd.Status.Conditions {
switch cond.Type {
case apiextensionsv1beta1.Established:
if cond.Status == apiextensionsv1beta1.ConditionTrue {
return true, err
}
case apiextensionsv1beta1.NamesAccepted:
if cond.Status == apiextensionsv1beta1.ConditionFalse {
fmt.Printf("Name conflict: %v\n", cond.Reason)
}
}
}
return false, err
})
if err != nil {
deleteErr := clientset.ApiextensionsV1beta1().CustomResourceDefinitions().Delete(name, nil)
if deleteErr != nil {
return errors.NewAggregate([]error{err, deleteErr})
}
return err
}
return nil
}