Nitin Goyal
2e8f513197
ExpandPVCIfRequired will expand PVC if and only if current PVC size is less than the desired PVC size. Signed-off-by: Nitin Goyal <nigoyal@redhat.com>
100 lines
2.8 KiB
Go
100 lines
2.8 KiB
Go
/*
|
|
Copyright 2021 The Rook Authors. All rights reserved.
|
|
|
|
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 (
|
|
"context"
|
|
"testing"
|
|
|
|
"github.com/stretchr/testify/assert"
|
|
v1 "k8s.io/api/core/v1"
|
|
apiresource "k8s.io/apimachinery/pkg/api/resource"
|
|
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
|
|
"sigs.k8s.io/controller-runtime/pkg/client"
|
|
"sigs.k8s.io/controller-runtime/pkg/client/fake"
|
|
)
|
|
|
|
func TestExpandPVCIfRequired(t *testing.T) {
|
|
|
|
testcases := []struct {
|
|
label string
|
|
currentPVCSize string
|
|
desiredPVCSize string
|
|
}{
|
|
{
|
|
label: "case 1: size is equal",
|
|
currentPVCSize: "1Mi",
|
|
desiredPVCSize: "1Mi",
|
|
},
|
|
{
|
|
label: "case 2: current size is less",
|
|
currentPVCSize: "1Mi",
|
|
desiredPVCSize: "2Mi",
|
|
},
|
|
{
|
|
label: "case 3: current size is more",
|
|
currentPVCSize: "2Mi",
|
|
desiredPVCSize: "1Mi",
|
|
},
|
|
}
|
|
|
|
desiredPVC := &v1.PersistentVolumeClaim{
|
|
ObjectMeta: metav1.ObjectMeta{
|
|
Name: "test",
|
|
Namespace: "rook-ceph",
|
|
},
|
|
Spec: v1.PersistentVolumeClaimSpec{
|
|
AccessModes: []v1.PersistentVolumeAccessMode{
|
|
v1.ReadWriteOnce,
|
|
},
|
|
Resources: v1.ResourceRequirements{
|
|
Requests: v1.ResourceList{
|
|
v1.ResourceName(v1.ResourceStorage): apiresource.MustParse("1Mi"),
|
|
},
|
|
},
|
|
},
|
|
}
|
|
|
|
for _, tc := range testcases {
|
|
|
|
desiredPVC.Spec.Resources.Requests[v1.ResourceStorage] = apiresource.MustParse(tc.currentPVCSize)
|
|
|
|
// create fake client with PVC
|
|
cl := fake.NewClientBuilder().WithRuntimeObjects(desiredPVC).Build()
|
|
|
|
// get existing PVC
|
|
existingPVC := &v1.PersistentVolumeClaim{}
|
|
err := cl.Get(context.TODO(), client.ObjectKey{Name: "test", Namespace: "rook-ceph"}, existingPVC)
|
|
assert.NoError(t, err)
|
|
|
|
desiredPVC.Spec.Resources.Requests[v1.ResourceStorage] = apiresource.MustParse(tc.desiredPVCSize)
|
|
|
|
ExpandPVCIfRequired(cl, desiredPVC, existingPVC)
|
|
|
|
// get existing PVC
|
|
err = cl.Get(context.TODO(), client.ObjectKey{Name: "test", Namespace: "rook-ceph"}, existingPVC)
|
|
assert.NoError(t, err)
|
|
|
|
// verify size
|
|
if tc.currentPVCSize <= tc.desiredPVCSize {
|
|
assert.Equal(t, desiredPVC.Spec.Resources.Requests[v1.ResourceStorage], existingPVC.Spec.Resources.Requests[v1.ResourceStorage])
|
|
} else {
|
|
assert.Equal(t, apiresource.MustParse(tc.currentPVCSize), existingPVC.Spec.Resources.Requests[v1.ResourceStorage])
|
|
}
|
|
}
|
|
}
|