[Resolved]Why the paramVerifyingScheme go further only when the verifer does not support the parameters?

shujun10086 · November 29, 2023, 4:04am

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kubernetes/kubectl/blob/master/pkg/validation/schema.go#L140C2-L140C22


      
          	if resource.IsParamUnsupportedError(err) {

It seems the function paramVerifyingSchema.ValidateBytes will do nothing if the param can be supported by the verifier.

It seems the schema checked from server side (NewSchemaValidation) and local schema also involved it.

github.com

kubernetes/kubectl/blob/master/pkg/cmd/util/factory_client_access.go#L158


      
          	// when the validationDirective is strict.
          	// If the directive is warn, we rely on the ParamVerifyingSchema
          	// to ignore the client-side validation and provide a warning
          	// to the user that attempting warn validation when SS validation
          	// is unsupported is inert.
          	if validationDirective == metav1.FieldValidationIgnore {
          		return validation.NullSchema{}, nil
          	}
          
          	schema := validation.ConjunctiveSchema{
          		validation.NewSchemaValidation(f),
          		validation.NoDoubleKeySchema{},
          	}
          
          	dynamicClient, err := f.DynamicClient()
          	if err != nil {
          		return nil, err
          	}
          	// Create the FieldValidationVerifier for use in the ParamVerifyingSchema.
          	discoveryClient, err := f.ToDiscoveryClient()
          	if err != nil {

if the logic cannot run https://github.com/kubernetes/kubectl/blob/master/pkg/validation/schema.go#L143
Then where does kubectl do the server side validation(Kubernetes 1.27: Server Side Field Validation and OpenAPI V3 move to GA | Kubernetes) ?

Anyone can help to comments about the loigc？

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[Resolved]Why the paramVerifyingScheme go further only when the verifer does not support the parameters?

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