/
crd.go
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/
crd.go
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// Copyright 2018 The zookeeper-operator Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package k8sutil
import (
"encoding/json"
"fmt"
"time"
api "github.com/nuance-mobility/zookeeper-operator/pkg/apis/zookeeper/v1alpha1"
"github.com/nuance-mobility/zookeeper-operator/pkg/util/retryutil"
apiextensionsv1beta1 "k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1beta1"
apiextensionsclient "k8s.io/apiextensions-apiserver/pkg/client/clientset/clientset"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/client-go/rest"
)
// TODO: replace this package with Operator client
// ZookeeperClusterCRUpdateFunc is a function to be used when atomically
// updating a Cluster CR.
type ZookeeperClusterCRUpdateFunc func(*api.ZookeeperCluster)
func GetClusterList(restcli rest.Interface, ns string) (*api.ZookeeperClusterList, error) {
b, err := restcli.Get().RequestURI(listClustersURI(ns)).DoRaw()
if err != nil {
return nil, err
}
clusters := &api.ZookeeperClusterList{}
if err := json.Unmarshal(b, clusters); err != nil {
return nil, err
}
return clusters, nil
}
func listClustersURI(ns string) string {
return fmt.Sprintf("/apis/%s/namespaces/%s/%s", api.SchemeGroupVersion.String(), ns, api.ZookeeperClusterResourcePlural)
}
func CreateCRD(clientset apiextensionsclient.Interface, crdName, rkind, rplural, shortName string) error {
crd := &apiextensionsv1beta1.CustomResourceDefinition{
ObjectMeta: metav1.ObjectMeta{
Name: crdName,
},
Spec: apiextensionsv1beta1.CustomResourceDefinitionSpec{
Group: api.SchemeGroupVersion.Group,
Version: api.SchemeGroupVersion.Version,
Scope: apiextensionsv1beta1.NamespaceScoped,
Names: apiextensionsv1beta1.CustomResourceDefinitionNames{
Plural: rplural,
Kind: rkind,
},
},
}
if len(shortName) != 0 {
crd.Spec.Names.ShortNames = []string{shortName}
}
_, err := clientset.ApiextensionsV1beta1().CustomResourceDefinitions().Create(crd)
if err != nil && !IsKubernetesResourceAlreadyExistError(err) {
return err
}
return nil
}
func WaitCRDReady(clientset apiextensionsclient.Interface, crdName string) error {
err := retryutil.Retry(5*time.Second, 20, func() (bool, error) {
crd, err := clientset.ApiextensionsV1beta1().CustomResourceDefinitions().Get(crdName, 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, nil
}
case apiextensionsv1beta1.NamesAccepted:
if cond.Status == apiextensionsv1beta1.ConditionFalse {
return false, fmt.Errorf("Name conflict: %v", cond.Reason)
}
}
}
return false, nil
})
if err != nil {
return fmt.Errorf("wait CRD created failed: %v", err)
}
return nil
}
func MustNewKubeExtClient() apiextensionsclient.Interface {
cfg, err := InClusterConfig()
if err != nil {
panic(err)
}
return apiextensionsclient.NewForConfigOrDie(cfg)
}