250 lines
7.9 KiB
Go
250 lines
7.9 KiB
Go
/*
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Copyright 2025 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 cacher
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import (
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"context"
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"testing"
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"k8s.io/apimachinery/pkg/apis/meta/internalversion"
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"k8s.io/apimachinery/pkg/apis/meta/internalversion/validation"
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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/apiserver/pkg/apis/example"
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"k8s.io/apiserver/pkg/storage"
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)
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func TestCalculateDigest(t *testing.T) {
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newListFunc := func() runtime.Object { return &example.PodList{} }
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testCases := []struct {
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desc string
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resourceVersion string
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cacherReady bool
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cacherItems []example.Pod
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etcdItems []example.Pod
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resourcePrefix string
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expectListKey string
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expectDigest storageDigest
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expectErr bool
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}{
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{
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desc: "not ready",
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cacherReady: false,
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resourceVersion: "1",
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expectErr: true,
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},
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{
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desc: "empty",
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resourceVersion: "1",
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cacherReady: true,
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expectDigest: storageDigest{
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ResourceVersion: "1",
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CacheDigest: "cbf29ce484222325",
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EtcdDigest: "cbf29ce484222325",
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},
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},
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{
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desc: "with one element equal",
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resourceVersion: "2",
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cacherReady: true,
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cacherItems: []example.Pod{
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{ObjectMeta: metav1.ObjectMeta{Namespace: "default", Name: "pod", ResourceVersion: "2"}},
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},
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etcdItems: []example.Pod{
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{ObjectMeta: metav1.ObjectMeta{Namespace: "default", Name: "pod", ResourceVersion: "2"}},
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},
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expectDigest: storageDigest{
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ResourceVersion: "2",
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CacheDigest: "86bf3a5e80d1c5cb",
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EtcdDigest: "86bf3a5e80d1c5cb",
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},
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},
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{
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desc: "namespace changes digest",
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resourceVersion: "2",
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cacherReady: true,
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cacherItems: []example.Pod{
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{ObjectMeta: metav1.ObjectMeta{Namespace: "kube-system", Name: "pod", ResourceVersion: "2"}},
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},
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etcdItems: []example.Pod{
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{ObjectMeta: metav1.ObjectMeta{Namespace: "kube-public", Name: "pod", ResourceVersion: "2"}},
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},
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expectDigest: storageDigest{
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ResourceVersion: "2",
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CacheDigest: "4ae4e750bd825b17",
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EtcdDigest: "f940a60af965b03",
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},
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},
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{
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desc: "name changes digest",
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resourceVersion: "2",
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cacherReady: true,
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cacherItems: []example.Pod{
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{ObjectMeta: metav1.ObjectMeta{Namespace: "default", Name: "pod2", ResourceVersion: "2"}},
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},
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etcdItems: []example.Pod{
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{ObjectMeta: metav1.ObjectMeta{Namespace: "default", Name: "pod3", ResourceVersion: "2"}},
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},
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expectDigest: storageDigest{
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ResourceVersion: "2",
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CacheDigest: "c9120494e4c1897d",
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EtcdDigest: "c9156494e4c46274",
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},
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},
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{
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desc: "resourceVersion changes digest",
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resourceVersion: "2",
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cacherReady: true,
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cacherItems: []example.Pod{
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{ObjectMeta: metav1.ObjectMeta{Namespace: "default", Name: "pod", ResourceVersion: "3"}},
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},
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etcdItems: []example.Pod{
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{ObjectMeta: metav1.ObjectMeta{Namespace: "default", Name: "pod", ResourceVersion: "4"}},
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},
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expectDigest: storageDigest{
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ResourceVersion: "2",
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CacheDigest: "86bf3a5e80d1c5ca",
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EtcdDigest: "86bf3a5e80d1c5cd",
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},
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},
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{
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desc: "watch missed write event",
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resourceVersion: "3",
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cacherReady: true,
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cacherItems: []example.Pod{
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{ObjectMeta: metav1.ObjectMeta{Namespace: "Default", Name: "pod", ResourceVersion: "2"}},
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},
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etcdItems: []example.Pod{
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{ObjectMeta: metav1.ObjectMeta{Namespace: "Default", Name: "pod", ResourceVersion: "2"}},
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{ObjectMeta: metav1.ObjectMeta{Namespace: "Default", Name: "pod", ResourceVersion: "3"}},
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},
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expectDigest: storageDigest{
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ResourceVersion: "3",
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CacheDigest: "1859bac707c2cb2b",
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EtcdDigest: "11d147fc800df0e0",
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},
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},
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}
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for _, tc := range testCases {
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t.Run(tc.desc, func(t *testing.T) {
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etcd := &dummyStorage{
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getListFn: func(_ context.Context, key string, opts storage.ListOptions, listObj runtime.Object) error {
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if key != tc.expectListKey {
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t.Fatalf("Expect GetList key %q, got %q", tc.expectListKey, key)
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}
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if opts.ResourceVersion != tc.resourceVersion {
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t.Fatalf("Expect GetList resourceVersion %q, got %q", tc.resourceVersion, opts.ResourceVersion)
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}
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if opts.ResourceVersionMatch != metav1.ResourceVersionMatchExact {
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t.Fatalf("Expect GetList match exact, got %q", opts.ResourceVersionMatch)
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}
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podList := listObj.(*example.PodList)
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podList.Items = tc.etcdItems
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podList.ResourceVersion = tc.resourceVersion
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return nil
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},
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}
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cacher := &dummyCacher{
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ready: tc.cacherReady,
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dummyStorage: dummyStorage{
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getListFn: func(_ context.Context, key string, opts storage.ListOptions, listObj runtime.Object) error {
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if key != tc.expectListKey {
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t.Fatalf("Expect GetList key %q, got %q", tc.expectListKey, key)
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}
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if opts.ResourceVersion != "0" {
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t.Fatalf("Expect GetList resourceVersion 0, got %q", opts.ResourceVersion)
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}
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if opts.ResourceVersionMatch != metav1.ResourceVersionMatchNotOlderThan {
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t.Fatalf("Expect GetList match not older than, got %q", opts.ResourceVersionMatch)
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}
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podList := listObj.(*example.PodList)
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podList.Items = tc.cacherItems
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podList.ResourceVersion = tc.resourceVersion
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return nil
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},
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},
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}
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checker := newConsistencyChecker(tc.resourcePrefix, newListFunc, cacher, etcd)
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digest, err := checker.calculateDigests(context.Background())
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if (err != nil) != tc.expectErr {
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t.Fatalf("Expect error: %v, got: %v", tc.expectErr, err)
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}
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if err != nil {
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return
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}
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if *digest != tc.expectDigest {
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t.Errorf("Expect: %+v Got: %+v", &tc.expectDigest, *digest)
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}
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})
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}
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}
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func TestValidateUndelegatedListOptions(t *testing.T) {
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opts := []storage.ListOptions{}
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keyPrefix := "/pods/"
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continueOnRV1, err := storage.EncodeContinue("/pods/a", keyPrefix, 1)
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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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continueOnNegativeRV, err := storage.EncodeContinue("/pods/a", keyPrefix, -1)
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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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for _, rv := range []string{"", "0", "1"} {
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for _, match := range []metav1.ResourceVersionMatch{"", metav1.ResourceVersionMatchExact, metav1.ResourceVersionMatchNotOlderThan} {
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for _, c := range []string{"", continueOnRV1, continueOnNegativeRV} {
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for _, limit := range []int64{0, 100} {
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for _, recursive := range []bool{true, false} {
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opt := storage.ListOptions{
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ResourceVersion: rv,
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ResourceVersionMatch: match,
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Predicate: storage.SelectionPredicate{
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Limit: limit,
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Continue: c,
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},
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Recursive: recursive,
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}
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// Skip requests that will not pass apiserver validation
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if errs := validation.ValidateListOptions(&internalversion.ListOptions{
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ResourceVersion: opt.ResourceVersion,
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ResourceVersionMatch: opt.ResourceVersionMatch,
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Limit: opt.Predicate.Limit,
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Continue: opt.Predicate.Continue,
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}, false); len(errs) != 0 {
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continue
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}
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// Skip requests sent directly to etcd
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if delegateList, _ := shouldDelegateList(opt); delegateList {
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continue
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}
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opts = append(opts, opt)
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}
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}
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}
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}
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}
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for _, opt := range opts {
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_, _, err := storage.ValidateListOptions(keyPrefix, storage.APIObjectVersioner{}, opt)
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if err != nil {
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t.Errorf("Expected List requests %+v to pass validation, got: %v", opt, err)
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}
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}
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}
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