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QueryParamVerifier falls back on invalid v3 document

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This commit is contained in:
Sean Sullivan 2023-05-04 21:50:40 -07:00 committed by Sean Sullivan
parent 5d524f3dc3
commit 6f23c77408
4 changed files with 76 additions and 22 deletions
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13
staging/src/k8s.io/cli-runtime/pkg/resource/fallback_query_param_verifier.go
View File

@ -17,7 +17,6 @@ limitations under the License.
package resource
import (
"k8s.io/apimachinery/pkg/api/errors"
"k8s.io/apimachinery/pkg/runtime/schema"
"k8s.io/klog/v2"
)
@ -44,12 +43,16 @@ func NewFallbackQueryParamVerifier(primary Verifier, secondary Verifier) Verifie
// HasSupport returns an error if the passed GVK does not support the
// query param (fieldValidation), as determined by the primary and
// secondary OpenAPI endpoints. The primary endoint is checked first,
// but if it not found, the secondary attempts to determine support.
// If the GVK supports the query param, nil is returned.
// but if there is an error retrieving the OpenAPI V3 document, the
// secondary attempts to determine support. If the GVK supports the query param,
// nil is returned.
func (f *fallbackQueryParamVerifier) HasSupport(gvk schema.GroupVersionKind) error {
err := f.primary.HasSupport(gvk)
if errors.IsNotFound(err) {
klog.V(7).Infoln("openapi v3 endpoint not found...falling back to legacy")
// If an error was returned from the primary OpenAPI endpoint,
// we fallback to check the secondary OpenAPI endpoint for an
// any error *except* "paramUnsupportedError".
if err != nil && !IsParamUnsupportedError(err) {
klog.V(7).Infof("openapi v3 error...falling back to legacy: %s", err)
err = f.secondary.HasSupport(gvk)
}
return err

58
staging/src/k8s.io/cli-runtime/pkg/resource/fallback_query_param_verifier_test.go
View File

@ -17,6 +17,7 @@ limitations under the License.
package resource
import (
"fmt"
"testing"
"k8s.io/apimachinery/pkg/api/errors"
@ -32,7 +33,6 @@ func TestFallbackQueryParamVerifier_PrimaryNoFallback(t *testing.T) {
crds []schema.GroupKind // CRDFinder returns these CRD's
gvk schema.GroupVersionKind // GVK whose OpenAPI spec is checked
queryParam VerifiableQueryParam // Usually "fieldValidation"
primaryError error
expectedSupports bool
}{
"Field validation query param is supported for batch/v1/Job, primary verifier": {
@ -123,7 +123,8 @@ func TestFallbackQueryParamVerifier_PrimaryNoFallback(t *testing.T) {
for tn, tc := range tests {
t.Run(tn, func(t *testing.T) {
primary := createFakeV3Verifier(tc.crds, root, tc.queryParam)
secondary := createFakeLegacyVerifier(tc.crds, &fakeSchema, tc.queryParam)
// secondary verifier should not be called.
secondary := &failingVerifier{name: "secondary", t: t}
verifier := NewFallbackQueryParamVerifier(primary, secondary)
err := verifier.HasSupport(tc.gvk)
if tc.expectedSupports && err != nil {
@ -151,6 +152,29 @@ func TestFallbackQueryParamVerifier_SecondaryFallback(t *testing.T) {
Kind: "Job",
},
queryParam: QueryParamFieldValidation,
primaryError: errors.NewNotFound(schema.GroupResource{}, "OpenAPI V3 endpoint not found"),
expectedSupports: true,
},
"Field validation query param is supported for batch/v1/Job, invalid v3 document error": {
crds: []schema.GroupKind{},
gvk: schema.GroupVersionKind{
Group: "batch",
Version: "v1",
Kind: "Job",
},
queryParam: QueryParamFieldValidation,
primaryError: fmt.Errorf("Invalid OpenAPI V3 document"),
expectedSupports: true,
},
"Field validation query param is supported for batch/v1/Job, timeout error": {
crds: []schema.GroupKind{},
gvk: schema.GroupVersionKind{
Group: "batch",
Version: "v1",
Kind: "Job",
},
queryParam: QueryParamFieldValidation,
primaryError: fmt.Errorf("timeout"),
expectedSupports: true,
},
"Field validation query param supported for core/v1/Namespace, secondary verifier": {
@ -161,6 +185,7 @@ func TestFallbackQueryParamVerifier_SecondaryFallback(t *testing.T) {
Kind: "Namespace",
},
queryParam: QueryParamFieldValidation,
primaryError: errors.NewNotFound(schema.GroupResource{}, "OpenAPI V3 endpoint not found"),
expectedSupports: true,
},
"Field validation unsupported for unknown GVK, secondary verifier": {
@ -171,6 +196,18 @@ func TestFallbackQueryParamVerifier_SecondaryFallback(t *testing.T) {
Kind: "Uknown",
},
queryParam: QueryParamFieldValidation,
primaryError: errors.NewNotFound(schema.GroupResource{}, "OpenAPI V3 endpoint not found"),
expectedSupports: false,
},
"Field validation unsupported for unknown GVK, invalid document causes secondary verifier": {
crds: []schema.GroupKind{},
gvk: schema.GroupVersionKind{
Group: "bad",
Version: "v1",
Kind: "Uknown",
},
queryParam: QueryParamFieldValidation,
primaryError: fmt.Errorf("Invalid OpenAPI V3 document"),
expectedSupports: false,
},
"Unknown query param unsupported (for all GVK's), secondary verifier": {
@ -181,6 +218,7 @@ func TestFallbackQueryParamVerifier_SecondaryFallback(t *testing.T) {
Kind: "Deployment",
},
queryParam: "UnknownQueryParam",
primaryError: errors.NewNotFound(schema.GroupResource{}, "OpenAPI V3 endpoint not found"),
expectedSupports: false,
},
"Field validation query param supported for found CRD, secondary verifier": {
@ -197,6 +235,7 @@ func TestFallbackQueryParamVerifier_SecondaryFallback(t *testing.T) {
Kind: "ExampleCRD",
},
queryParam: QueryParamFieldValidation,
primaryError: errors.NewNotFound(schema.GroupResource{}, "OpenAPI V3 endpoint not found"),
expectedSupports: true,
},
"Field validation query param unsupported for missing CRD, secondary verifier": {
@ -213,6 +252,7 @@ func TestFallbackQueryParamVerifier_SecondaryFallback(t *testing.T) {
Kind: "ExampleCRD",
},
queryParam: QueryParamFieldValidation,
primaryError: errors.NewNotFound(schema.GroupResource{}, "OpenAPI V3 endpoint not found"),
expectedSupports: false,
},
"List GVK is specifically unsupported": {
@ -223,16 +263,17 @@ func TestFallbackQueryParamVerifier_SecondaryFallback(t *testing.T) {
Kind: "List",
},
queryParam: QueryParamFieldValidation,
primaryError: errors.NewNotFound(schema.GroupResource{}, "OpenAPI V3 endpoint not found"),
expectedSupports: false,
},
}
// Primary OpenAPI client always returns "NotFound" error, so secondary verifier is used.
fakeOpenAPIClient := openapitest.NewFakeClient()
fakeOpenAPIClient.ForcedErr = errors.NewNotFound(schema.GroupResource{}, "OpenAPI V3 endpoint not found")
root := openapi3.NewRoot(fakeOpenAPIClient)
for tn, tc := range tests {
t.Run(tn, func(t *testing.T) {
fakeOpenAPIClient.ForcedErr = tc.primaryError
primary := createFakeV3Verifier(tc.crds, root, tc.queryParam)
secondary := createFakeLegacyVerifier(tc.crds, &fakeSchema, tc.queryParam)
verifier := NewFallbackQueryParamVerifier(primary, secondary)
@ -269,3 +310,14 @@ func createFakeLegacyVerifier(crds []schema.GroupKind, fakeSchema discovery.Open
queryParam: queryParam,
}
}
// failingVerifier always crashes when called; implements Verifier
type failingVerifier struct {
name string
t *testing.T
}
func (c *failingVerifier) HasSupport(gvk schema.GroupVersionKind) error {
c.t.Fatalf("%s verifier should not be called", c.name)
return nil
}

10
staging/src/k8s.io/cli-runtime/pkg/resource/query_param_verifier_v3.go
View File

@ -17,6 +17,8 @@ limitations under the License.
package resource
import (
"fmt"
"k8s.io/apimachinery/pkg/runtime/schema"
"k8s.io/client-go/dynamic"
"k8s.io/client-go/openapi"
@ -62,6 +64,11 @@ func (v *queryParamVerifierV3) HasSupport(gvk schema.GroupVersionKind) error {
}
gvSpec, err := v.root.GVSpec(gvk.GroupVersion())
if err == nil {
// Even if there is no error returned fetching OpenAPI V3 document,
// check if the returned document is valid before checking support.
if gvSpec == nil || gvSpec.Paths == nil {
return fmt.Errorf("Invalid OpenAPI V3 document")
}
if supports := supportsQueryParamV3(gvSpec, gvk, v.queryParam); supports {
return nil
}
@ -106,9 +113,6 @@ func hasGVKExtensionV3(extensions spec.Extensions, gvk schema.GroupVersionKind)
// the PATCH end-point. Returns true if the query param is supported by the
// spec for the passed GVK; false otherwise.
func supportsQueryParamV3(doc *spec3.OpenAPI, gvk schema.GroupVersionKind, queryParam VerifiableQueryParam) bool {
if doc == nil || doc.Paths == nil {
return false
}
for _, path := range doc.Paths.Paths {
// If operation is not PATCH, then continue.
op := path.PathProps.Patch

17
staging/src/k8s.io/cli-runtime/pkg/resource/query_param_verifier_v3_test.go
View File

@ -17,6 +17,7 @@ limitations under the License.
package resource
import (
"strings"
"testing"
"k8s.io/apimachinery/pkg/runtime/schema"
@ -141,24 +142,18 @@ func TestInvalidOpenAPIV3Document(t *testing.T) {
tests := map[string]struct {
spec *spec3.OpenAPI
}{
"nil document correctly returns Unsupported error": {
"nil document returns error": {
spec: nil,
},
"empty document correctly returns Unsupported error": {
"empty document returns error": {
spec: &spec3.OpenAPI{},
},
"minimal document correctly returns Unsupported error": {
"minimal document returns error": {
spec: &spec3.OpenAPI{
Version: "openapi 3.0.0",
Paths: nil,
},
},
"document with empty Paths correctly returns Unsupported error": {
spec: &spec3.OpenAPI{
Version: "openapi 3.0.0",
Paths: &spec3.Paths{},
},
},
}
gvk := schema.GroupVersionKind{
@ -177,8 +172,8 @@ func TestInvalidOpenAPIV3Document(t *testing.T) {
queryParam: QueryParamFieldValidation,
}
err := verifier.HasSupport(gvk)
if err == nil {
t.Errorf("Expected not supports error, but none received.")
if !strings.Contains(err.Error(), "Invalid OpenAPI V3 document") {
t.Errorf("Expected invalid document error, but none received.")
}
})
}