mirror of
https://github.com/k3s-io/kubernetes.git
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425 lines
14 KiB
Go
425 lines
14 KiB
Go
/*
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Copyright 2016 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 storage
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import (
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"context"
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"fmt"
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"sync"
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"testing"
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apiequality "k8s.io/apimachinery/pkg/api/equality"
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"k8s.io/apimachinery/pkg/api/errors"
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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/fields"
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"k8s.io/apimachinery/pkg/labels"
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"k8s.io/apimachinery/pkg/runtime"
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"k8s.io/apimachinery/pkg/util/diff"
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genericapirequest "k8s.io/apiserver/pkg/endpoints/request"
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"k8s.io/apiserver/pkg/registry/generic"
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genericregistrytest "k8s.io/apiserver/pkg/registry/generic/testing"
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"k8s.io/apiserver/pkg/registry/rest"
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etcd3testing "k8s.io/apiserver/pkg/storage/etcd3/testing"
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"k8s.io/kubernetes/pkg/apis/apps"
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"k8s.io/kubernetes/pkg/apis/autoscaling"
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api "k8s.io/kubernetes/pkg/apis/core"
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"k8s.io/kubernetes/pkg/registry/registrytest"
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)
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// TODO: allow for global factory override
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func newStorage(t *testing.T) (StatefulSetStorage, *etcd3testing.EtcdTestServer) {
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etcdStorage, server := registrytest.NewEtcdStorage(t, apps.GroupName)
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restOptions := generic.RESTOptions{StorageConfig: etcdStorage, Decorator: generic.UndecoratedStorage, DeleteCollectionWorkers: 1, ResourcePrefix: "statefulsets"}
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storage, err := NewStorage(restOptions)
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if err != nil {
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t.Fatalf("unexpected error from REST storage: %v", err)
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}
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return storage, server
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}
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func validNewStatefulSet() *apps.StatefulSet {
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return &apps.StatefulSet{
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ObjectMeta: metav1.ObjectMeta{
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Name: "foo",
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Namespace: metav1.NamespaceDefault,
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Labels: map[string]string{"a": "b"},
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},
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Spec: apps.StatefulSetSpec{
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PodManagementPolicy: apps.OrderedReadyPodManagement,
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Selector: &metav1.LabelSelector{MatchLabels: map[string]string{"a": "b"}},
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Template: api.PodTemplateSpec{
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ObjectMeta: metav1.ObjectMeta{
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Labels: map[string]string{"a": "b"},
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},
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Spec: api.PodSpec{
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Containers: []api.Container{
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{
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Name: "test",
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Image: "test_image",
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ImagePullPolicy: api.PullIfNotPresent,
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},
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},
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RestartPolicy: api.RestartPolicyAlways,
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DNSPolicy: api.DNSClusterFirst,
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},
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},
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Replicas: 7,
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UpdateStrategy: apps.StatefulSetUpdateStrategy{Type: apps.RollingUpdateStatefulSetStrategyType},
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},
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Status: apps.StatefulSetStatus{},
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}
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}
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var validStatefulSet = *validNewStatefulSet()
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func TestCreate(t *testing.T) {
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storage, server := newStorage(t)
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defer server.Terminate(t)
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defer storage.StatefulSet.Store.DestroyFunc()
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test := genericregistrytest.New(t, storage.StatefulSet.Store)
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ps := validNewStatefulSet()
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ps.ObjectMeta = metav1.ObjectMeta{}
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test.TestCreate(
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// valid
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ps,
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// TODO: Add an invalid case when we have validation.
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)
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}
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// TODO: Test updates to spec when we allow them.
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func TestStatusUpdate(t *testing.T) {
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storage, server := newStorage(t)
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defer server.Terminate(t)
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defer storage.StatefulSet.Store.DestroyFunc()
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ctx := genericapirequest.WithNamespace(genericapirequest.NewContext(), metav1.NamespaceDefault)
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key := "/statefulsets/" + metav1.NamespaceDefault + "/foo"
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validStatefulSet := validNewStatefulSet()
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if err := storage.StatefulSet.Storage.Create(ctx, key, validStatefulSet, nil, 0, false); err != nil {
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t.Fatalf("unexpected error: %v", err)
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}
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update := apps.StatefulSet{
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ObjectMeta: validStatefulSet.ObjectMeta,
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Spec: apps.StatefulSetSpec{
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Replicas: 7,
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},
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Status: apps.StatefulSetStatus{
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Replicas: 7,
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},
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}
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if _, _, err := storage.Status.Update(ctx, update.Name, rest.DefaultUpdatedObjectInfo(&update), rest.ValidateAllObjectFunc, rest.ValidateAllObjectUpdateFunc, false, &metav1.UpdateOptions{}); err != nil {
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t.Fatalf("unexpected error: %v", err)
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}
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obj, err := storage.StatefulSet.Get(ctx, "foo", &metav1.GetOptions{})
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if err != nil {
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t.Fatalf("unexpected error: %v", err)
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}
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ps := obj.(*apps.StatefulSet)
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if ps.Spec.Replicas != 7 {
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t.Errorf("we expected .spec.replicas to not be updated but it was updated to %v", ps.Spec.Replicas)
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}
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if ps.Status.Replicas != 7 {
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t.Errorf("we expected .status.replicas to be updated to %d but it was %v", 7, ps.Status.Replicas)
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}
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}
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func TestGet(t *testing.T) {
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storage, server := newStorage(t)
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defer server.Terminate(t)
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defer storage.StatefulSet.Store.DestroyFunc()
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test := genericregistrytest.New(t, storage.StatefulSet.Store)
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test.TestGet(validNewStatefulSet())
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}
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func TestList(t *testing.T) {
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storage, server := newStorage(t)
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defer server.Terminate(t)
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defer storage.StatefulSet.Store.DestroyFunc()
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test := genericregistrytest.New(t, storage.StatefulSet.Store)
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test.TestList(validNewStatefulSet())
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}
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func TestDelete(t *testing.T) {
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storage, server := newStorage(t)
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defer server.Terminate(t)
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defer storage.StatefulSet.Store.DestroyFunc()
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test := genericregistrytest.New(t, storage.StatefulSet.Store)
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test.TestDelete(validNewStatefulSet())
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}
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func TestWatch(t *testing.T) {
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storage, server := newStorage(t)
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defer server.Terminate(t)
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defer storage.StatefulSet.Store.DestroyFunc()
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test := genericregistrytest.New(t, storage.StatefulSet.Store)
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test.TestWatch(
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validNewStatefulSet(),
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// matching labels
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[]labels.Set{
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{"a": "b"},
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},
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// not matching labels
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[]labels.Set{
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{"a": "c"},
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{"foo": "bar"},
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},
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// matching fields
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[]fields.Set{
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{"metadata.name": "foo"},
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},
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// not matching fields
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[]fields.Set{
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{"metadata.name": "bar"},
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},
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)
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}
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func TestCategories(t *testing.T) {
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storage, server := newStorage(t)
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defer server.Terminate(t)
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defer storage.StatefulSet.Store.DestroyFunc()
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expected := []string{"all"}
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registrytest.AssertCategories(t, storage.StatefulSet, expected)
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}
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func TestShortNames(t *testing.T) {
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storage, server := newStorage(t)
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defer server.Terminate(t)
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defer storage.StatefulSet.Store.DestroyFunc()
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expected := []string{"sts"}
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registrytest.AssertShortNames(t, storage.StatefulSet, expected)
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}
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func TestScaleGet(t *testing.T) {
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storage, server := newStorage(t)
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defer server.Terminate(t)
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defer storage.StatefulSet.Store.DestroyFunc()
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name := "foo"
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var sts apps.StatefulSet
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ctx := genericapirequest.WithNamespace(genericapirequest.NewContext(), metav1.NamespaceDefault)
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key := "/statefulsets/" + metav1.NamespaceDefault + "/" + name
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if err := storage.StatefulSet.Storage.Create(ctx, key, &validStatefulSet, &sts, 0, false); err != nil {
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t.Fatalf("error setting new statefulset (key: %s) %v: %v", key, validStatefulSet, err)
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}
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selector, err := metav1.LabelSelectorAsSelector(validStatefulSet.Spec.Selector)
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if err != nil {
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t.Fatal(err)
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}
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want := &autoscaling.Scale{
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ObjectMeta: metav1.ObjectMeta{
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Name: name,
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Namespace: metav1.NamespaceDefault,
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UID: sts.UID,
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ResourceVersion: sts.ResourceVersion,
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CreationTimestamp: sts.CreationTimestamp,
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},
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Spec: autoscaling.ScaleSpec{
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Replicas: validStatefulSet.Spec.Replicas,
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},
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Status: autoscaling.ScaleStatus{
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Replicas: validStatefulSet.Status.Replicas,
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Selector: selector.String(),
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},
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}
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obj, err := storage.Scale.Get(ctx, name, &metav1.GetOptions{})
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got := obj.(*autoscaling.Scale)
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if err != nil {
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t.Fatalf("error fetching scale for %s: %v", name, err)
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}
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if !apiequality.Semantic.DeepEqual(got, want) {
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t.Errorf("unexpected scale: %s", diff.ObjectDiff(got, want))
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}
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}
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func TestScaleUpdate(t *testing.T) {
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storage, server := newStorage(t)
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defer server.Terminate(t)
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defer storage.StatefulSet.Store.DestroyFunc()
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name := "foo"
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var sts apps.StatefulSet
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ctx := genericapirequest.WithNamespace(genericapirequest.NewContext(), metav1.NamespaceDefault)
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key := "/statefulsets/" + metav1.NamespaceDefault + "/" + name
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if err := storage.StatefulSet.Storage.Create(ctx, key, &validStatefulSet, &sts, 0, false); err != nil {
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t.Fatalf("error setting new statefulset (key: %s) %v: %v", key, validStatefulSet, err)
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}
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replicas := 12
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update := autoscaling.Scale{
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ObjectMeta: metav1.ObjectMeta{
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Name: name,
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Namespace: metav1.NamespaceDefault,
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},
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Spec: autoscaling.ScaleSpec{
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Replicas: int32(replicas),
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},
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}
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if _, _, err := storage.Scale.Update(ctx, update.Name, rest.DefaultUpdatedObjectInfo(&update), rest.ValidateAllObjectFunc, rest.ValidateAllObjectUpdateFunc, false, &metav1.UpdateOptions{}); err != nil {
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t.Fatalf("error updating scale %v: %v", update, err)
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}
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obj, err := storage.Scale.Get(ctx, name, &metav1.GetOptions{})
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if err != nil {
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t.Fatalf("error fetching scale for %s: %v", name, err)
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}
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scale := obj.(*autoscaling.Scale)
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if scale.Spec.Replicas != int32(replicas) {
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t.Errorf("wrong replicas count expected: %d got: %d", replicas, scale.Spec.Replicas)
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}
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update.ResourceVersion = sts.ResourceVersion
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update.Spec.Replicas = 15
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if _, _, err = storage.Scale.Update(ctx, update.Name, rest.DefaultUpdatedObjectInfo(&update), rest.ValidateAllObjectFunc, rest.ValidateAllObjectUpdateFunc, false, &metav1.UpdateOptions{}); err != nil && !errors.IsConflict(err) {
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t.Fatalf("unexpected error, expecting an update conflict but got %v", err)
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}
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}
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// TODO: Test generation number.
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func TestScalePatchErrors(t *testing.T) {
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storage, server := newStorage(t)
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defer server.Terminate(t)
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validObj := &validStatefulSet
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namespace := validObj.Namespace
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name := validObj.Name
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resourceStore := storage.StatefulSet.Store
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scaleStore := storage.Scale
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defer resourceStore.DestroyFunc()
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ctx := genericapirequest.WithNamespace(genericapirequest.NewContext(), namespace)
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{
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applyNotFoundPatch := func() rest.TransformFunc {
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return func(_ context.Context, _, currentObject runtime.Object) (objToUpdate runtime.Object, patchErr error) {
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t.Errorf("notfound patch called")
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return currentObject, nil
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}
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}
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_, _, err := scaleStore.Update(ctx, "bad-name", rest.DefaultUpdatedObjectInfo(nil, applyNotFoundPatch()), rest.ValidateAllObjectFunc, rest.ValidateAllObjectUpdateFunc, false, &metav1.UpdateOptions{})
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if !apierrors.IsNotFound(err) {
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t.Errorf("expected notfound, got %v", err)
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}
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}
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if _, err := resourceStore.Create(ctx, validObj, rest.ValidateAllObjectFunc, &metav1.CreateOptions{}); err != nil {
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t.Errorf("Unexpected error: %v", err)
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}
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{
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applyBadUIDPatch := func() rest.TransformFunc {
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return func(_ context.Context, _, currentObject runtime.Object) (objToUpdate runtime.Object, patchErr error) {
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currentObject.(*autoscaling.Scale).UID = "123"
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return currentObject, nil
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}
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}
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_, _, err := scaleStore.Update(ctx, name, rest.DefaultUpdatedObjectInfo(nil, applyBadUIDPatch()), rest.ValidateAllObjectFunc, rest.ValidateAllObjectUpdateFunc, false, &metav1.UpdateOptions{})
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if !apierrors.IsConflict(err) {
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t.Errorf("expected conflict, got %v", err)
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}
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}
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{
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applyBadResourceVersionPatch := func() rest.TransformFunc {
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return func(_ context.Context, _, currentObject runtime.Object) (objToUpdate runtime.Object, patchErr error) {
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currentObject.(*autoscaling.Scale).ResourceVersion = "123"
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return currentObject, nil
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}
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}
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_, _, err := scaleStore.Update(ctx, name, rest.DefaultUpdatedObjectInfo(nil, applyBadResourceVersionPatch()), rest.ValidateAllObjectFunc, rest.ValidateAllObjectUpdateFunc, false, &metav1.UpdateOptions{})
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if !apierrors.IsConflict(err) {
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t.Errorf("expected conflict, got %v", err)
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}
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}
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}
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func TestScalePatchConflicts(t *testing.T) {
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storage, server := newStorage(t)
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defer server.Terminate(t)
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validObj := &validStatefulSet
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namespace := validObj.Namespace
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name := validObj.Name
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resourceStore := storage.StatefulSet.Store
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scaleStore := storage.Scale
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defer resourceStore.DestroyFunc()
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ctx := genericapirequest.WithNamespace(genericapirequest.NewContext(), namespace)
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if _, err := resourceStore.Create(ctx, validObj, rest.ValidateAllObjectFunc, &metav1.CreateOptions{}); err != nil {
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t.Fatalf("Unexpected error: %v", err)
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}
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applyLabelPatch := func(labelName, labelValue string) rest.TransformFunc {
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return func(_ context.Context, _, currentObject runtime.Object) (objToUpdate runtime.Object, patchErr error) {
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currentObject.(metav1.Object).SetLabels(map[string]string{labelName: labelValue})
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return currentObject, nil
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}
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}
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stopCh := make(chan struct{})
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wg := &sync.WaitGroup{}
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wg.Add(1)
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go func() {
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defer wg.Done()
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// continuously submits a patch that updates a label and verifies the label update was effective
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labelName := "timestamp"
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for i := 0; ; i++ {
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select {
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case <-stopCh:
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return
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default:
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expectedLabelValue := fmt.Sprint(i)
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updated, _, err := resourceStore.Update(ctx, name, rest.DefaultUpdatedObjectInfo(nil, applyLabelPatch(labelName, fmt.Sprint(i))), rest.ValidateAllObjectFunc, rest.ValidateAllObjectUpdateFunc, false, &metav1.UpdateOptions{})
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if err != nil {
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t.Errorf("error patching main resource: %v", err)
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return
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}
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gotLabelValue := updated.(metav1.Object).GetLabels()[labelName]
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if gotLabelValue != expectedLabelValue {
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t.Errorf("wrong label value: expected: %s, got: %s", expectedLabelValue, gotLabelValue)
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return
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}
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}
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}
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}()
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// continuously submits a scale patch of replicas for a monotonically increasing replica value
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applyReplicaPatch := func(replicas int) rest.TransformFunc {
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return func(_ context.Context, _, currentObject runtime.Object) (objToUpdate runtime.Object, patchErr error) {
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currentObject.(*autoscaling.Scale).Spec.Replicas = int32(replicas)
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return currentObject, nil
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}
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}
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for i := 0; i < 100; i++ {
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result, _, err := scaleStore.Update(ctx, name, rest.DefaultUpdatedObjectInfo(nil, applyReplicaPatch(i)), rest.ValidateAllObjectFunc, rest.ValidateAllObjectUpdateFunc, false, &metav1.UpdateOptions{})
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if err != nil {
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t.Fatalf("error patching scale: %v", err)
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}
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scale := result.(*autoscaling.Scale)
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if scale.Spec.Replicas != int32(i) {
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t.Errorf("wrong replicas count: expected: %d got: %d", i, scale.Spec.Replicas)
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}
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}
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close(stopCh)
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wg.Wait()
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}
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