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Merge pull request kubernetes#63587 from sttts/sttts-crd-test-conflic…
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…t-errs

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apiextensions: handle CRD conflict errs in integration tests

In the integration tests we assume that no other party modifies CRDs while the test is updating them repeatedly. Due to semantic changes for CRD conditions (kubernetes#63068) and the introduction of `status.storedVersions` (kubernetes#63518), this assumption will not hold true in the future. This PR prepares the test to handle conflict errors gracefully.
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Kubernetes Submit Queue authored May 10, 2018
2 parents 9d6ea5b + 5b78c3a commit e63f259
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Showing 3 changed files with 44 additions and 58 deletions.
72 changes: 21 additions & 51 deletions staging/src/k8s.io/apiextensions-apiserver/test/integration/subresources_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -22,15 +22,13 @@ import (
"sort"
"strings"
"testing"
"time"

autoscaling "k8s.io/api/autoscaling/v1"
apierrors "k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
"k8s.io/apimachinery/pkg/runtime/schema"
"k8s.io/apimachinery/pkg/types"
"k8s.io/apimachinery/pkg/util/wait"
utilfeature "k8s.io/apiserver/pkg/util/feature"
utilfeaturetesting "k8s.io/apiserver/pkg/util/feature/testing"
"k8s.io/client-go/dynamic"
Expand Down Expand Up @@ -396,9 +394,8 @@ func TestValidateOnlyStatus(t *testing.T) {
// UpdateStatus should validate only status
// 1. create a crd with max value of .spec.num = 10 and .status.num = 10
// 2. create a cr with .spec.num = 10 and .status.num = 10 (valid)
// 3. update the crd so that max value of .spec.num = 5 and .status.num = 10
// 4. update the status of the cr with .status.num = 5 (spec is invalid)
// validation passes becauses spec is not validated
// 3. update the spec of the cr with .spec.num = 15 (spec is invalid), expect no error
// 4. update the spec of the cr with .spec.num = 15 (spec is invalid), expect error

// max value of spec.num = 10 and status.num = 10
schema := &apiextensionsv1beta1.JSONSchemaProps{
Expand Down Expand Up @@ -447,58 +444,31 @@ func TestValidateOnlyStatus(t *testing.T) {
t.Fatalf("unable to create noxu instance: %v", err)
}

gottenCRD, err := apiExtensionClient.ApiextensionsV1beta1().CustomResourceDefinitions().Get("noxus.mygroup.example.com", metav1.GetOptions{})
// update the spec with .spec.num = 15, expecting no error
err = unstructured.SetNestedField(createdNoxuInstance.Object, int64(15), "spec", "num")
if err != nil {
t.Fatal(err)
}

// update the crd so that max value of spec.num = 5 and status.num = 10
gottenCRD.Spec.Validation.OpenAPIV3Schema = &apiextensionsv1beta1.JSONSchemaProps{
Properties: map[string]apiextensionsv1beta1.JSONSchemaProps{
"spec": {
Properties: map[string]apiextensionsv1beta1.JSONSchemaProps{
"num": {
Type: "integer",
Maximum: float64Ptr(5),
},
},
},
"status": {
Properties: map[string]apiextensionsv1beta1.JSONSchemaProps{
"num": {
Type: "integer",
Maximum: float64Ptr(10),
},
},
},
},
}

if _, err = apiExtensionClient.ApiextensionsV1beta1().CustomResourceDefinitions().Update(gottenCRD); err != nil {
t.Fatal(err)
t.Fatalf("unexpected error setting .spec.num: %v", err)
}

// update the status with .status.num = 5
err = unstructured.SetNestedField(createdNoxuInstance.Object, int64(5), "status", "num")
createdNoxuInstance, err = noxuStatusResourceClient.Update(createdNoxuInstance)
if err != nil {
t.Fatalf("unexpected error: %v", err)
t.Errorf("unexpected error: %v", err)
}

// cr is updated even though spec is invalid
err = wait.Poll(500*time.Millisecond, wait.ForeverTestTimeout, func() (bool, error) {
_, err := noxuStatusResourceClient.Update(createdNoxuInstance)
if statusError, isStatus := err.(*apierrors.StatusError); isStatus {
if strings.Contains(statusError.Error(), "is invalid") {
return false, nil
}
}
if err != nil {
return false, err
}
return true, nil
})
// update with .status.num = 15, expecting an error
err = unstructured.SetNestedField(createdNoxuInstance.Object, int64(15), "status", "num")
if err != nil {
t.Fatal(err)
t.Fatalf("unexpected error setting .status.num: %v", err)
}
createdNoxuInstance, err = noxuStatusResourceClient.Update(createdNoxuInstance)
if err == nil {
t.Fatal("expected error, but got none")
}
statusError, isStatus := err.(*apierrors.StatusError)
if !isStatus || statusError == nil {
t.Fatalf("expected status error, got %T: %v", err, err)
}
if !strings.Contains(statusError.Error(), "Invalid value") {
t.Fatalf("expected 'Invalid value' in error, got: %v", err)
}
}

Expand Down
19 changes: 19 additions & 0 deletions staging/src/k8s.io/apiextensions-apiserver/test/integration/testserver/resources.go
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Original file line number Diff line number Diff line change
Expand Up @@ -275,6 +275,25 @@ func checkForWatchCachePrimed(crd *apiextensionsv1beta1.CustomResourceDefinition
}
}

// UpdateCustomResourceDefinition updates a CRD, retrying up to 5 times on version conflict errors.
func UpdateCustomResourceDefinition(client clientset.Interface, name string, update func(*apiextensionsv1beta1.CustomResourceDefinition)) (*apiextensionsv1beta1.CustomResourceDefinition, error) {
for i := 0; i < 5; i++ {
crd, err := client.ApiextensionsV1beta1().CustomResourceDefinitions().Get(name, metav1.GetOptions{})
if err != nil {
return nil, fmt.Errorf("failed to get CustomResourceDefinition %q: %v", name, err)
}
update(crd)
crd, err = client.ApiextensionsV1beta1().CustomResourceDefinitions().Update(crd)
if err == nil {
return crd, nil
}
if !errors.IsConflict(err) {
return nil, fmt.Errorf("failed to update CustomResourceDefinition %q: %v", name, err)
}
}
return nil, fmt.Errorf("too many retries after conflicts updating CustomResourceDefinition %q", name)
}

func DeleteCustomResourceDefinition(crd *apiextensionsv1beta1.CustomResourceDefinition, apiExtensionsClient clientset.Interface) error {
if err := apiExtensionsClient.Apiextensions().CustomResourceDefinitions().Delete(crd.Name, nil); err != nil {
return err
Expand Down
11 changes: 4 additions & 7 deletions staging/src/k8s.io/apiextensions-apiserver/test/integration/validation_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -348,14 +348,11 @@ func TestCRValidationOnCRDUpdate(t *testing.T) {
t.Fatalf("unexpected non-error: CR should be rejected")
}

gottenCRD, err := apiExtensionClient.ApiextensionsV1beta1().CustomResourceDefinitions().Get("noxus.mygroup.example.com", metav1.GetOptions{})
if err != nil {
t.Fatal(err)
}

// update the CRD to a less stricter schema
gottenCRD.Spec.Validation.OpenAPIV3Schema.Required = []string{"alpha", "beta"}
if _, err = apiExtensionClient.ApiextensionsV1beta1().CustomResourceDefinitions().Update(gottenCRD); err != nil {
_, err = testserver.UpdateCustomResourceDefinition(apiExtensionClient, "noxus.mygroup.example.com", func(crd *apiextensionsv1beta1.CustomResourceDefinition) {
crd.Spec.Validation.OpenAPIV3Schema.Required = []string{"alpha", "beta"}
})
if err != nil {
t.Fatal(err)
}

Expand Down

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