upgrade controller-tools to v0.4.1

Signed-off-by: yuswift <yuswift2018@gmail.com>

vendor/sigs.k8s.io/controller-tools/pkg/crd/gen.go

@@ -18,7 +18,9 @@ package crd
 
 import (
 	"fmt"
+	"go/ast"
 	"go/types"
+	"os"
 
 	apiext "k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1"
 	apiextlegacy "k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1beta1"
@@ -84,6 +86,9 @@ type Generator struct {
 	CRDVersions []string `marker:"crdVersions,optional"`
 }
 
+func (Generator) CheckFilter() loader.NodeFilter {
+	return filterTypesForCRDs
+}
 func (Generator) RegisterMarkers(into *markers.Registry) error {
 	return crdmarkers.Register(into)
 }
@@ -156,6 +161,11 @@ func (g Generator) Generate(ctx *genall.GenerationContext) error {
 		}
 
 		for i, crd := range versionedCRDs {
+			// defaults are not allowed to be specified in v1beta1 CRDs, so strip them
+			// before writing to a file
+			if crdVersions[i] == "v1beta1" {
+				removeDefaultsFromSchemas(crd.(*apiextlegacy.CustomResourceDefinition))
+			}
 			var fileName string
 			if i == 0 {
 				fileName = fmt.Sprintf("%s_%s.yaml", crdRaw.Spec.Group, crdRaw.Spec.Names.Plural)
@@ -171,6 +181,49 @@ func (g Generator) Generate(ctx *genall.GenerationContext) error {
 	return nil
 }
 
+// removeDefaultsFromSchemas will remove all instances of default values being
+// specified across all defined API versions
+func removeDefaultsFromSchemas(crd *apiextlegacy.CustomResourceDefinition) {
+	if crd.Spec.Validation != nil {
+		removeDefaultsFromSchemaProps(crd.Spec.Validation.OpenAPIV3Schema)
+	}
+
+	for _, versionSpec := range crd.Spec.Versions {
+		if versionSpec.Schema != nil {
+			removeDefaultsFromSchemaProps(versionSpec.Schema.OpenAPIV3Schema)
+		}
+	}
+}
+
+// removeDefaultsFromSchemaProps will recurse into JSONSchemaProps to remove
+// all instances of default values being specified
+func removeDefaultsFromSchemaProps(v *apiextlegacy.JSONSchemaProps) {
+	if v == nil {
+		return
+	}
+
+	if v.Default != nil {
+		fmt.Fprintln(os.Stderr, "Warning: default unsupported in CRD version v1beta1, v1 required. Removing defaults.")
+	}
+
+	// nil-out the default field
+	v.Default = nil
+	for name, prop := range v.Properties {
+		// iter var reference is fine -- we handle the persistence of the modfications on the line below
+		//nolint:gosec
+		removeDefaultsFromSchemaProps(&prop)
+		v.Properties[name] = prop
+	}
+	if v.Items != nil {
+		removeDefaultsFromSchemaProps(v.Items.Schema)
+		for i := range v.Items.JSONSchemas {
+			props := v.Items.JSONSchemas[i]
+			removeDefaultsFromSchemaProps(&props)
+			v.Items.JSONSchemas[i] = props
+		}
+	}
+}
+
 // toTrivialVersions strips out all schemata except for the storage schema,
 // and moves that up into the root object.  This makes the CRD compatible
 // with pre 1.13 clusters.
@@ -277,3 +330,22 @@ func FindKubeKinds(parser *Parser, metav1Pkg *loader.Package) map[schema.GroupKi
 
 	return kubeKinds
 }
+
+// filterTypesForCRDs filters out all nodes that aren't used in CRD generation,
+// like interfaces and struct fields without JSON tag.
+func filterTypesForCRDs(node ast.Node) bool {
+	switch node := node.(type) {
+	case *ast.InterfaceType:
+		// skip interfaces, we never care about references in them
+		return false
+	case *ast.StructType:
+		return true
+	case *ast.Field:
+		_, hasTag := loader.ParseAstTag(node.Tag).Lookup("json")
+		// fields without JSON tags mean we have custom serialization,
+		// so only visit fields with tags.
+		return hasTag
+	default:
+		return true
+	}
+}