140 lines
4.6 KiB
Go
140 lines
4.6 KiB
Go
/*
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Copyright 2018 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package main
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import (
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"reflect"
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"time"
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"github.com/golang/glog"
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crdv1 "github.com/kubernetes-csi/external-snapshotter/pkg/apis/volumesnapshot/v1alpha1"
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apiextensionsv1beta1 "k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1beta1"
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apiextensionsclient "k8s.io/apiextensions-apiserver/pkg/client/clientset/clientset"
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apierrors "k8s.io/apimachinery/pkg/api/errors"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/runtime"
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"k8s.io/apimachinery/pkg/runtime/serializer"
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"k8s.io/apimachinery/pkg/util/wait"
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"k8s.io/client-go/rest"
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)
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const (
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// SnapshotPVCAnnotation is "snapshot.alpha.kubernetes.io/snapshot"
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SnapshotPVCAnnotation = "volumesnapshot.csi.k8s.io/snapshot"
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)
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// NewClient creates a new RESTClient
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func NewClient(cfg *rest.Config) (*rest.RESTClient, *runtime.Scheme, error) {
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scheme := runtime.NewScheme()
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if err := crdv1.AddToScheme(scheme); err != nil {
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return nil, nil, err
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}
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config := *cfg
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config.GroupVersion = &crdv1.SchemeGroupVersion
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config.APIPath = "/apis"
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config.ContentType = runtime.ContentTypeJSON
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config.NegotiatedSerializer = serializer.DirectCodecFactory{CodecFactory: serializer.NewCodecFactory(scheme)}
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client, err := rest.RESTClientFor(&config)
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if err != nil {
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return nil, nil, err
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}
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return client, scheme, nil
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}
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// CreateCRD creates CustomResourceDefinition
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func CreateCRD(clientset apiextensionsclient.Interface) error {
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crd := &apiextensionsv1beta1.CustomResourceDefinition{
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ObjectMeta: metav1.ObjectMeta{
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Name: crdv1.VolumeSnapshotClassResourcePlural + "." + crdv1.GroupName,
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},
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Spec: apiextensionsv1beta1.CustomResourceDefinitionSpec{
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Group: crdv1.GroupName,
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Version: crdv1.SchemeGroupVersion.Version,
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Scope: apiextensionsv1beta1.ClusterScoped,
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Names: apiextensionsv1beta1.CustomResourceDefinitionNames{
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Plural: crdv1.VolumeSnapshotClassResourcePlural,
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Kind: reflect.TypeOf(crdv1.VolumeSnapshotClass{}).Name(),
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},
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},
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}
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res, err := clientset.ApiextensionsV1beta1().CustomResourceDefinitions().Create(crd)
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if err != nil && !apierrors.IsAlreadyExists(err) {
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glog.Fatalf("failed to create VolumeSnapshotResource: %#v, err: %#v",
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res, err)
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}
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crd = &apiextensionsv1beta1.CustomResourceDefinition{
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ObjectMeta: metav1.ObjectMeta{
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Name: crdv1.VolumeSnapshotContentResourcePlural + "." + crdv1.GroupName,
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},
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Spec: apiextensionsv1beta1.CustomResourceDefinitionSpec{
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Group: crdv1.GroupName,
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Version: crdv1.SchemeGroupVersion.Version,
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Scope: apiextensionsv1beta1.ClusterScoped,
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Names: apiextensionsv1beta1.CustomResourceDefinitionNames{
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Plural: crdv1.VolumeSnapshotContentResourcePlural,
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Kind: reflect.TypeOf(crdv1.VolumeSnapshotContent{}).Name(),
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},
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},
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}
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res, err = clientset.ApiextensionsV1beta1().CustomResourceDefinitions().Create(crd)
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if err != nil && !apierrors.IsAlreadyExists(err) {
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glog.Fatalf("failed to create VolumeSnapshotContentResource: %#v, err: %#v",
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res, err)
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}
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crd = &apiextensionsv1beta1.CustomResourceDefinition{
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ObjectMeta: metav1.ObjectMeta{
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Name: crdv1.VolumeSnapshotResourcePlural + "." + crdv1.GroupName,
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},
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Spec: apiextensionsv1beta1.CustomResourceDefinitionSpec{
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Group: crdv1.GroupName,
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Version: crdv1.SchemeGroupVersion.Version,
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Scope: apiextensionsv1beta1.NamespaceScoped,
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Names: apiextensionsv1beta1.CustomResourceDefinitionNames{
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Plural: crdv1.VolumeSnapshotResourcePlural,
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Kind: reflect.TypeOf(crdv1.VolumeSnapshot{}).Name(),
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},
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},
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}
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res, err = clientset.ApiextensionsV1beta1().CustomResourceDefinitions().Create(crd)
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if err != nil && !apierrors.IsAlreadyExists(err) {
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glog.Fatalf("failed to create VolumeSnapshotResource: %#v, err: %#v",
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res, err)
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}
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return nil
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}
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// WaitForSnapshotResource waits for the snapshot resource
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func WaitForSnapshotResource(snapshotClient *rest.RESTClient) error {
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return wait.Poll(100*time.Millisecond, 60*time.Second, func() (bool, error) {
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_, err := snapshotClient.Get().
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Resource(crdv1.VolumeSnapshotContentResourcePlural).DoRaw()
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if err == nil {
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return true, nil
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}
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if apierrors.IsNotFound(err) {
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return false, nil
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}
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return false, err
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})
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}
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