mirror of
https://github.com/k3s-io/kubernetes.git
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Add integration tests for CRD validation rules feature
This commit is contained in:
Joe Betz
497
test/integration/apiserver/crd_validation_expressions_test.go
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497
test/integration/apiserver/crd_validation_expressions_test.go
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@@ -0,0 +1,497 @@
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/*
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Copyright 2021 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 apiserver
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import (
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"context"
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"fmt"
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"strings"
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"testing"
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apiextensionsv1 "k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1"
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apiextensionsv1beta1 "k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1beta1"
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"k8s.io/apiextensions-apiserver/pkg/client/clientset/clientset"
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"k8s.io/apiextensions-apiserver/test/integration/fixtures"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
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"k8s.io/apimachinery/pkg/runtime/schema"
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"k8s.io/apimachinery/pkg/util/json"
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genericfeatures "k8s.io/apiserver/pkg/features"
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"k8s.io/apiserver/pkg/storage/names"
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utilfeature "k8s.io/apiserver/pkg/util/feature"
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"k8s.io/client-go/dynamic"
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featuregatetesting "k8s.io/component-base/featuregate/testing"
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apiservertesting "k8s.io/kubernetes/cmd/kube-apiserver/app/testing"
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"k8s.io/kubernetes/test/integration/framework"
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)
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// TestCustomResourceValidatorsWithDisabledFeatureGate test that x-kubernetes-validations work as expected when the
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// feature gate is disabled.
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func TestCustomResourceValidatorsWithDisabledFeatureGate(t *testing.T) {
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defer featuregatetesting.SetFeatureGateDuringTest(t, utilfeature.DefaultFeatureGate, genericfeatures.CustomResourceValidationExpressions, false)()
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server, err := apiservertesting.StartTestServer(t, apiservertesting.NewDefaultTestServerOptions(), nil, framework.SharedEtcd())
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if err != nil {
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t.Fatal(err)
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}
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defer server.TearDownFn()
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config := server.ClientConfig
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apiExtensionClient, err := clientset.NewForConfig(config)
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if err != nil {
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t.Fatal(err)
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}
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dynamicClient, err := dynamic.NewForConfig(config)
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if err != nil {
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t.Fatal(err)
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}
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t.Run("x-kubernetes-validations fields MUST be dropped from CRDs that are created when feature gate is disabled", func(t *testing.T) {
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schemaWithFeatureGateOff := crdWithSchema(t, "WithFeatureGateOff", structuralSchemaWithValidators)
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crdWithFeatureGateOff, err := fixtures.CreateNewV1CustomResourceDefinition(schemaWithFeatureGateOff, apiExtensionClient, dynamicClient)
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if err != nil {
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t.Fatal(err)
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}
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s := crdWithFeatureGateOff.Spec.Versions[0].Schema.OpenAPIV3Schema
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if len(s.XValidations) != 0 {
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t.Errorf("Expected CRD to have no x-kubernetes-validatons rules but got: %v", s.XValidations)
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}
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})
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}
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// TestCustomResourceValidators tests x-kubernetes-validations compile and validate as expected when the feature gate
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// is enabled.
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func TestCustomResourceValidators(t *testing.T) {
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defer featuregatetesting.SetFeatureGateDuringTest(t, utilfeature.DefaultFeatureGate, genericfeatures.CustomResourceValidationExpressions, true)()
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server, err := apiservertesting.StartTestServer(t, apiservertesting.NewDefaultTestServerOptions(), nil, framework.SharedEtcd())
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if err != nil {
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t.Fatal(err)
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}
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defer server.TearDownFn()
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config := server.ClientConfig
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apiExtensionClient, err := clientset.NewForConfig(config)
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if err != nil {
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t.Fatal(err)
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}
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dynamicClient, err := dynamic.NewForConfig(config)
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if err != nil {
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t.Fatal(err)
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}
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t.Run("Structural schema", func(t *testing.T) {
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structuralWithValidators := crdWithSchema(t, "Structural", structuralSchemaWithValidators)
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crd, err := fixtures.CreateNewV1CustomResourceDefinition(structuralWithValidators, apiExtensionClient, dynamicClient)
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if err != nil {
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t.Fatal(err)
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}
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gvr := schema.GroupVersionResource{
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Group: crd.Spec.Group,
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Version: crd.Spec.Versions[0].Name,
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Resource: crd.Spec.Names.Plural,
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}
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crClient := dynamicClient.Resource(gvr)
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t.Run("CRD creation MUST allow data that is valid according to x-kubernetes-validations", func(t *testing.T) {
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name1 := names.SimpleNameGenerator.GenerateName("cr-1")
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_, err = crClient.Create(context.TODO(), &unstructured.Unstructured{Object: map[string]interface{}{
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"apiVersion": gvr.Group + "/" + gvr.Version,
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"kind": crd.Spec.Names.Kind,
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"metadata": map[string]interface{}{
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"name": name1,
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},
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"spec": map[string]interface{}{
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"x": int64(2),
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"y": int64(2),
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"limit": int64(123),
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},
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}}, metav1.CreateOptions{})
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if err != nil {
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t.Errorf("Failed to create custom resource: %v", err)
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}
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})
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t.Run("custom resource create and update MUST NOT allow data that is invalid according to x-kubernetes-validations if the feature gate is enabled", func(t *testing.T) {
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name1 := names.SimpleNameGenerator.GenerateName("cr-1")
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// a spec create that is invalid MUST fail validation
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cr := &unstructured.Unstructured{Object: map[string]interface{}{
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"apiVersion": gvr.Group + "/" + gvr.Version,
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"kind": crd.Spec.Names.Kind,
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"metadata": map[string]interface{}{
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"name": name1,
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},
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"spec": map[string]interface{}{
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"x": int64(-1),
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"y": int64(0),
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},
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}}
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// a spec create that is invalid MUST fail validation
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_, err = crClient.Create(context.TODO(), cr, metav1.CreateOptions{})
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if err == nil {
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t.Fatal("Expected create of invalid custom resource to fail")
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} else {
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if !strings.Contains(err.Error(), "failed rule: self.spec.x + self.spec.y") {
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t.Fatalf("Expected error to contain %s but got %v", "failed rule: self.spec.x + self.spec.y", err.Error())
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}
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}
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// a spec create that is valid MUST pass validation
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cr.Object["spec"] = map[string]interface{}{
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"x": int64(2),
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"y": int64(2),
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"extra": "anything?",
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"floatMap": map[string]interface{}{
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"key1": 0.2,
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"key2": 0.3,
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},
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"assocList": []interface{}{
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map[string]interface{}{
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"k": "a",
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"v": "1",
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},
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},
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"limit": nil,
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}
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cr, err := crClient.Create(context.TODO(), cr, metav1.CreateOptions{})
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if err != nil {
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t.Fatalf("Unexpected error creating custom resource: %v", err)
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}
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// spec updates that are invalid MUST fail validation
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cases := []struct {
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name string
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spec map[string]interface{}
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}{
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{
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name: "spec vs. status default value",
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spec: map[string]interface{}{
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"x": 3,
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"y": -4,
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},
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},
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{
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name: "nested string field",
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spec: map[string]interface{}{
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"extra": "something",
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},
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},
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{
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name: "nested array",
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spec: map[string]interface{}{
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"floatMap": map[string]interface{}{
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"key1": 0.1,
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"key2": 0.2,
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},
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},
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},
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{
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name: "nested associative list",
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spec: map[string]interface{}{
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"assocList": []interface{}{
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map[string]interface{}{
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"k": "a",
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"v": "2",
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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 _, tc := range cases {
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t.Run(tc.name, func(t *testing.T) {
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cr.Object["spec"] = tc.spec
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_, err = crClient.Update(context.TODO(), cr, metav1.UpdateOptions{})
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if err == nil {
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t.Fatal("Expected invalid update of custom resource to fail")
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} else {
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if !strings.Contains(err.Error(), "failed rule") {
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t.Fatalf("Expected error to contain %s but got %v", "failed rule", err.Error())
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}
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}
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})
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}
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// a status update that is invalid MUST fail validation
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cr.Object["status"] = map[string]interface{}{
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"z": int64(5),
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}
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_, err = crClient.UpdateStatus(context.TODO(), cr, metav1.UpdateOptions{})
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if err == nil {
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t.Fatal("Expected invalid update of custom resource status to fail")
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} else {
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if !strings.Contains(err.Error(), "failed rule: self.spec.x + self.spec.y") {
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t.Fatalf("Expected error to contain %s but got %v", "failed rule: self.spec.x + self.spec.y", err.Error())
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}
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}
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// a status update this is valid MUST pass validation
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cr.Object["status"] = map[string]interface{}{
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"z": int64(3),
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}
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_, err = crClient.UpdateStatus(context.TODO(), cr, metav1.UpdateOptions{})
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if err != nil {
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t.Fatalf("Unexpected error updating custom resource status: %v", err)
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}
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})
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})
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t.Run("CRD writes MUST fail for a non-structural schema containing x-kubernetes-validations", func(t *testing.T) {
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// The only way for a non-structural schema to exist is for it to already be persisted in etcd as a non-structural CRD.
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nonStructuralCRD, err := fixtures.CreateCRDUsingRemovedAPI(server.EtcdClient, server.EtcdStoragePrefix, nonStructuralCrdWithValidations(), apiExtensionClient, dynamicClient)
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if err != nil {
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t.Fatalf("Unexpected error non-structural CRD by writing directly to etcd: %v", err)
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}
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// Double check that the schema is non-structural
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crd, err := apiExtensionClient.ApiextensionsV1().CustomResourceDefinitions().Get(context.TODO(), nonStructuralCRD.Name, 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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nonStructural := false
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for _, c := range crd.Status.Conditions {
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if c.Type == apiextensionsv1.NonStructuralSchema {
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nonStructural = true
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}
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}
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if !nonStructural {
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t.Fatal("Expected CRD to be non-structural")
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}
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//Try to change it
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crd.Spec.Versions[0].Schema.OpenAPIV3Schema.XValidations = apiextensionsv1.ValidationRules{
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{
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Rule: "has(self.foo)",
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},
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}
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_, err = apiExtensionClient.ApiextensionsV1().CustomResourceDefinitions().Update(context.TODO(), crd, metav1.UpdateOptions{})
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if err == nil {
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t.Fatal("Expected error")
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}
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})
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t.Run("CRD creation MUST fail if a x-kubernetes-validations rule accesses a metadata field other than name", func(t *testing.T) {
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structuralWithValidators := crdWithSchema(t, "InvalidStructuralMetadata", structuralSchemaWithInvalidMetadataValidators)
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_, err := fixtures.CreateNewV1CustomResourceDefinition(structuralWithValidators, apiExtensionClient, dynamicClient)
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|
if err == nil {
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t.Error("Expected error creating custom resource but got none")
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|
} else if !strings.Contains(err.Error(), "undefined field 'labels'") {
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t.Errorf("Expected error to contain %s but got %v", "undefined field 'labels'", err.Error())
|
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|
}
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|
})
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|
t.Run("CRD creation MUST pass if a x-kubernetes-validations rule accesses metadata.name", func(t *testing.T) {
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|
structuralWithValidators := crdWithSchema(t, "ValidStructuralMetadata", structuralSchemaWithValidMetadataValidators)
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|
_, err := fixtures.CreateNewV1CustomResourceDefinition(structuralWithValidators, apiExtensionClient, dynamicClient)
|
||||||
|
if err != nil {
|
||||||
|
t.Error("Unexpected error creating custom resource but metadata validation rule")
|
||||||
|
}
|
||||||
|
})
|
||||||
|
}
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|
|
||||||
|
func nonStructuralCrdWithValidations() *apiextensionsv1beta1.CustomResourceDefinition {
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|
return &apiextensionsv1beta1.CustomResourceDefinition{
|
||||||
|
ObjectMeta: metav1.ObjectMeta{
|
||||||
|
Name: "foos.nonstructural.cr.bar.com",
|
||||||
|
},
|
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|
Spec: apiextensionsv1beta1.CustomResourceDefinitionSpec{
|
||||||
|
Group: "nonstructural.cr.bar.com",
|
||||||
|
Version: "v1",
|
||||||
|
Scope: apiextensionsv1beta1.NamespaceScoped,
|
||||||
|
Names: apiextensionsv1beta1.CustomResourceDefinitionNames{
|
||||||
|
Plural: "foos",
|
||||||
|
Kind: "Foo",
|
||||||
|
},
|
||||||
|
Validation: &apiextensionsv1beta1.CustomResourceValidation{
|
||||||
|
OpenAPIV3Schema: &apiextensionsv1beta1.JSONSchemaProps{
|
||||||
|
Type: "object",
|
||||||
|
Properties: map[string]apiextensionsv1beta1.JSONSchemaProps{
|
||||||
|
"foo": {},
|
||||||
|
},
|
||||||
|
},
|
||||||
|
},
|
||||||
|
},
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
func crdWithSchema(t *testing.T, kind string, schemaJson []byte) *apiextensionsv1.CustomResourceDefinition {
|
||||||
|
plural := strings.ToLower(kind) + "s"
|
||||||
|
var c apiextensionsv1.CustomResourceValidation
|
||||||
|
err := json.Unmarshal(schemaJson, &c)
|
||||||
|
if err != nil {
|
||||||
|
t.Fatal(err)
|
||||||
|
}
|
||||||
|
|
||||||
|
return &apiextensionsv1.CustomResourceDefinition{
|
||||||
|
ObjectMeta: metav1.ObjectMeta{Name: fmt.Sprintf("%s.mygroup.example.com", plural)},
|
||||||
|
Spec: apiextensionsv1.CustomResourceDefinitionSpec{
|
||||||
|
Group: "mygroup.example.com",
|
||||||
|
Versions: []apiextensionsv1.CustomResourceDefinitionVersion{{
|
||||||
|
Name: "v1beta1",
|
||||||
|
Served: true,
|
||||||
|
Storage: true,
|
||||||
|
Schema: &c,
|
||||||
|
Subresources: &apiextensionsv1.CustomResourceSubresources{
|
||||||
|
Status: &apiextensionsv1.CustomResourceSubresourceStatus{},
|
||||||
|
},
|
||||||
|
}},
|
||||||
|
Names: apiextensionsv1.CustomResourceDefinitionNames{
|
||||||
|
Plural: plural,
|
||||||
|
Kind: kind,
|
||||||
|
},
|
||||||
|
Scope: apiextensionsv1.ClusterScoped,
|
||||||
|
},
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
var structuralSchemaWithValidators = []byte(`
|
||||||
|
{
|
||||||
|
"openAPIV3Schema": {
|
||||||
|
"description": "CRD with CEL validators",
|
||||||
|
"type": "object",
|
||||||
|
"x-kubernetes-validations": [
|
||||||
|
{
|
||||||
|
"rule": "self.spec.x + self.spec.y >= (has(self.status) ? self.status.z : 0)"
|
||||||
|
}
|
||||||
|
],
|
||||||
|
"properties": {
|
||||||
|
"spec": {
|
||||||
|
"type": "object",
|
||||||
|
"properties": {
|
||||||
|
"x": {
|
||||||
|
"type": "integer",
|
||||||
|
"default": 0
|
||||||
|
},
|
||||||
|
"y": {
|
||||||
|
"type": "integer",
|
||||||
|
"default": 0
|
||||||
|
},
|
||||||
|
"extra": {
|
||||||
|
"type": "string",
|
||||||
|
"x-kubernetes-validations": [
|
||||||
|
{
|
||||||
|
"rule": "self.startsWith('anything')"
|
||||||
|
}
|
||||||
|
]
|
||||||
|
},
|
||||||
|
"floatMap": {
|
||||||
|
"type": "object",
|
||||||
|
"additionalProperties": { "type": "number" },
|
||||||
|
"x-kubernetes-validations": [
|
||||||
|
{
|
||||||
|
"rule": "self.all(k, self[k] >= 0.2)"
|
||||||
|
}
|
||||||
|
]
|
||||||
|
},
|
||||||
|
"assocList": {
|
||||||
|
"type": "array",
|
||||||
|
"items": {
|
||||||
|
"type": "object",
|
||||||
|
"properties": {
|
||||||
|
"k": { "type": "string" },
|
||||||
|
"v": { "type": "string" }
|
||||||
|
},
|
||||||
|
"required": ["k"]
|
||||||
|
},
|
||||||
|
"x-kubernetes-list-type": "map",
|
||||||
|
"x-kubernetes-list-map-keys": ["k"],
|
||||||
|
"x-kubernetes-validations": [
|
||||||
|
{
|
||||||
|
"rule": "self.exists(e, e.k == 'a' && e.v == '1')"
|
||||||
|
}
|
||||||
|
]
|
||||||
|
},
|
||||||
|
"limit": {
|
||||||
|
"nullable": true,
|
||||||
|
"x-kubernetes-validations": [
|
||||||
|
{
|
||||||
|
"rule": "type(self) == int && self == 123"
|
||||||
|
}
|
||||||
|
],
|
||||||
|
"x-kubernetes-int-or-string": true
|
||||||
|
}
|
||||||
|
}
|
||||||
|
},
|
||||||
|
"status": {
|
||||||
|
"type": "object",
|
||||||
|
"properties": {
|
||||||
|
"z": {
|
||||||
|
"type": "integer",
|
||||||
|
"default": 0
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}`)
|
||||||
|
|
||||||
|
var structuralSchemaWithValidMetadataValidators = []byte(`
|
||||||
|
{
|
||||||
|
"openAPIV3Schema": {
|
||||||
|
"description": "CRD with CEL validators",
|
||||||
|
"type": "object",
|
||||||
|
"x-kubernetes-validations": [
|
||||||
|
{
|
||||||
|
"rule": "self.metadata.name.size() > 3"
|
||||||
|
}
|
||||||
|
],
|
||||||
|
"properties": {
|
||||||
|
"metadata": {
|
||||||
|
"type": "object",
|
||||||
|
"properties": {
|
||||||
|
"name": { "type": "string" }
|
||||||
|
}
|
||||||
|
},
|
||||||
|
"spec": {
|
||||||
|
"type": "object",
|
||||||
|
"properties": {}
|
||||||
|
},
|
||||||
|
"status": {
|
||||||
|
"type": "object",
|
||||||
|
"properties": {}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}`)
|
||||||
|
|
||||||
|
var structuralSchemaWithInvalidMetadataValidators = []byte(`
|
||||||
|
{
|
||||||
|
"openAPIV3Schema": {
|
||||||
|
"description": "CRD with CEL validators",
|
||||||
|
"type": "object",
|
||||||
|
"x-kubernetes-validations": [
|
||||||
|
{
|
||||||
|
"rule": "self.metadata.labels.size() > 0"
|
||||||
|
}
|
||||||
|
],
|
||||||
|
"properties": {
|
||||||
|
"metadata": {
|
||||||
|
"type": "object",
|
||||||
|
"properties": {
|
||||||
|
"name": { "type": "string" }
|
||||||
|
}
|
||||||
|
},
|
||||||
|
"spec": {
|
||||||
|
"type": "object",
|
||||||
|
"properties": {}
|
||||||
|
},
|
||||||
|
"status": {
|
||||||
|
"type": "object",
|
||||||
|
"properties": {}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}`)
|
||||||
Reference in New Issue
Block a user