96e3bd1818
This PR adds DeletionPolicy which describes a policy for end-of-life maintenance of volume snapshot contents. There are two types of policies, delete and retain. By default, the policy is delete. In this case, when volume snaphsot is deleted, the volume snapshot content for it should be deleted, as well as the physical snapshot. If the policy is set the retain, the volume snapshot content will remain even if the volume snapshot it binds to is deleted.
92 lines
3.1 KiB
Go
92 lines
3.1 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 controller
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import (
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crdv1 "github.com/kubernetes-csi/external-snapshotter/pkg/apis/volumesnapshot/v1alpha1"
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"k8s.io/client-go/tools/cache"
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"testing"
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)
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func storeVersion(t *testing.T, prefix string, c cache.Store, version string, expectedReturn bool) {
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content := newContent("contentName", classEmpty, "sid1-1", "vuid1-1", "volume1-1", "snapuid1-1", "snap1-1", nil, nil, nil)
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content.ResourceVersion = version
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ret, err := storeObjectUpdate(c, content, "content")
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if err != nil {
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t.Errorf("%s: expected storeObjectUpdate to succeed, got: %v", prefix, err)
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}
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if expectedReturn != ret {
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t.Errorf("%s: expected storeObjectUpdate to return %v, got: %v", prefix, expectedReturn, ret)
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}
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// find the stored version
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contentObj, found, err := c.GetByKey("contentName")
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if err != nil {
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t.Errorf("expected content 'contentName' in the cache, got error instead: %v", err)
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}
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if !found {
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t.Errorf("expected content 'contentName' in the cache but it was not found")
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}
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content, ok := contentObj.(*crdv1.VolumeSnapshotContent)
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if !ok {
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t.Errorf("expected content in the cache, got different object instead: %#v", contentObj)
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}
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if ret {
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if content.ResourceVersion != version {
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t.Errorf("expected content with version %s in the cache, got %s instead", version, content.ResourceVersion)
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}
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} else {
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if content.ResourceVersion == version {
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t.Errorf("expected content with version other than %s in the cache, got %s instead", version, content.ResourceVersion)
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}
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}
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}
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// TestControllerCache tests func storeObjectUpdate()
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func TestControllerCache(t *testing.T) {
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// Cache under test
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c := cache.NewStore(cache.DeletionHandlingMetaNamespaceKeyFunc)
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// Store new PV
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storeVersion(t, "Step1", c, "1", true)
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// Store the same PV
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storeVersion(t, "Step2", c, "1", true)
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// Store newer PV
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storeVersion(t, "Step3", c, "2", true)
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// Store older PV - simulating old "PV updated" event or periodic sync with
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// old data
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storeVersion(t, "Step4", c, "1", false)
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// Store newer PV - test integer parsing ("2" > "10" as string,
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// while 2 < 10 as integers)
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storeVersion(t, "Step5", c, "10", true)
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}
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func TestControllerCacheParsingError(t *testing.T) {
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c := cache.NewStore(cache.DeletionHandlingMetaNamespaceKeyFunc)
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// There must be something in the cache to compare with
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storeVersion(t, "Step1", c, "1", true)
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content := newContent("contentName", classEmpty, "sid1-1", "vuid1-1", "volume1-1", "snapuid1-1", "snap1-1", nil, nil, nil)
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content.ResourceVersion = "xxx"
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_, err := storeObjectUpdate(c, content, "content")
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if err == nil {
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t.Errorf("Expected parsing error, got nil instead")
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}
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}
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