mirror of
https://github.com/ceph/ceph-csi.git
synced 2024-11-10 16:30:19 +00:00
105 lines
3.2 KiB
Go
105 lines
3.2 KiB
Go
/*
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Copyright 2017 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 apimachinery
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import (
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"fmt"
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"math/rand"
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. "github.com/onsi/ginkgo"
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. "github.com/onsi/gomega"
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"k8s.io/api/core/v1"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/client-go/util/workqueue"
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"k8s.io/kubernetes/test/e2e/framework"
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)
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const numberOfTotalResources = 400
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var _ = SIGDescribe("Servers with support for API chunking", func() {
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f := framework.NewDefaultFramework("chunking")
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It("should return chunks of results for list calls", func() {
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ns := f.Namespace.Name
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c := f.ClientSet
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client := c.CoreV1().PodTemplates(ns)
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By("creating a large number of resources")
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workqueue.Parallelize(20, numberOfTotalResources, func(i int) {
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for tries := 3; tries >= 0; tries-- {
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_, err := client.Create(&v1.PodTemplate{
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ObjectMeta: metav1.ObjectMeta{
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Name: fmt.Sprintf("template-%04d", i),
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},
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Template: v1.PodTemplateSpec{
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Spec: v1.PodSpec{
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Containers: []v1.Container{
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{Name: "test", Image: "test2"},
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},
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},
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},
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})
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if err == nil {
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return
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}
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framework.Logf("Got an error creating template %d: %v", i, err)
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}
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Fail("Unable to create template %d, exiting", i)
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})
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By("retrieving those results in paged fashion several times")
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for i := 0; i < 3; i++ {
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opts := metav1.ListOptions{}
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found := 0
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var lastRV string
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for {
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opts.Limit = int64(rand.Int31n(numberOfTotalResources/10) + 1)
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list, err := client.List(opts)
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Expect(err).ToNot(HaveOccurred())
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framework.Logf("Retrieved %d/%d results with rv %s and continue %s", len(list.Items), opts.Limit, list.ResourceVersion, list.Continue)
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// TODO: kops PR job is still using etcd2, which prevents this feature from working. Remove this check when kops is upgraded to etcd3
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if len(list.Items) > int(opts.Limit) {
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framework.Skipf("ERROR: This cluster does not support chunking, which means it is running etcd2 and not supported.")
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}
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Expect(len(list.Items)).To(BeNumerically("<=", opts.Limit))
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if len(lastRV) == 0 {
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lastRV = list.ResourceVersion
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}
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if lastRV != list.ResourceVersion {
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Expect(list.ResourceVersion).To(Equal(lastRV))
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}
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for _, item := range list.Items {
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Expect(item.Name).To(Equal(fmt.Sprintf("template-%04d", found)))
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found++
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}
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if len(list.Continue) == 0 {
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break
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}
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opts.Continue = list.Continue
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}
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Expect(found).To(BeNumerically("==", numberOfTotalResources))
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}
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By("retrieving those results all at once")
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list, err := client.List(metav1.ListOptions{Limit: numberOfTotalResources + 1})
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Expect(err).ToNot(HaveOccurred())
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Expect(list.Items).To(HaveLen(numberOfTotalResources))
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})
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})
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