Add option to disable kubebuilder markers

README.md

@@ -73,4 +73,6 @@ Other supported options are:
 *  `proto_oneof`
     *   when set to `true`, the openapi schema will include `oneOf` emulating the behavior of proto `oneof`.
 *  `int_native`
-    *   when set to `true`, the native openapi schemas will be used for Integer types instead of Solo wrappers that add Kubernetes extension headers to the schema to treat int as strings
+    *   when set to `true`, the native openapi schemas will be used for Integer types instead of Solo wrappers that add Kubernetes extension headers to the schema to treat int as strings.
+*  `disable_kube_markers`
+    *   when set to `true`, kubebuilder markers and validations such as PreserveUnknownFields, Required, default, and all CEL rules will be omitted from the OpenAPI schema. The Type marker will be maintained.

changelog/v0.2.3/disable-kube-markers-option.yaml

@@ -0,0 +1,6 @@
+changelog:
+  - type: NEW_FEATURE
+    issueLink: https://github.com/solo-io/gloo-mesh-enterprise/issues/17005
+    resolvesIssue: false
+    description: |
+      Adds support for disabling kubebuilder markers and validations to omit them from the generated OpenAPI schema.

integration_test.go

@@ -99,6 +99,16 @@ func TestOpenAPIGeneration(t *testing.T) {
 			},
 			wantFiles: []string{"test6/openapiv3.yaml"},
 		},
+		{
+			name:       "Test disable_kube_markers option",
+			id:         "test7",
+			perPackage: false,
+			genOpts:    "yaml=true,single_file=true,proto_oneof=true,int_native=true,multiline_description=true,disable_kube_markers=true",
+			inputFiles: map[string][]string{
+				"test7": {"./testdata/test7/markers.proto"},
+			},
+			wantFiles: []string{"test7/openapiv3.yaml"},
+		},
 	}
 
 	for _, tc := range testcases {

main.go

@@ -53,6 +53,7 @@ func generate(request pluginpb.CodeGeneratorRequest) (*pluginpb.CodeGeneratorRes
 	enumAsIntOrString := false
 	protoOneof := false
 	intNative := false
+	disableKubeMarkers := false
 
 	var messagesWithEmptySchema []string
 
@@ -137,6 +138,15 @@ func generate(request pluginpb.CodeGeneratorRequest) (*pluginpb.CodeGeneratorRes
 			}
 		} else if k == "additional_empty_schema" {
 			messagesWithEmptySchema = strings.Split(v, "+")
+		} else if k == "disable_kube_markers" {
+			switch strings.ToLower(v) {
+			case "true":
+				disableKubeMarkers = true
+			case "false":
+				disableKubeMarkers = false
+			default:
+				return nil, fmt.Errorf("unknown value '%s' for disable_kube_markers", v)
+			}
 		} else {
 			return nil, fmt.Errorf("unknown argument '%s' specified", k)
 		}
@@ -173,6 +183,7 @@ func generate(request pluginpb.CodeGeneratorRequest) (*pluginpb.CodeGeneratorRes
 		messagesWithEmptySchema,
 		protoOneof,
 		intNative,
+		disableKubeMarkers,
 	)
 	return g.generateOutput(filesToGen)
 }

openapiGenerator.go

@@ -116,6 +116,10 @@ type openapiGenerator struct {
 	intNative bool
 
 	markerRegistry *markers.Registry
+
+	// If set to true, kubebuilder markers and validations such as PreserveUnknownFields, Required, default, and all CEL rules will be omitted from the OpenAPI schema.
+	// The Type marker will be maintained.
+	disableKubeMarkers bool
 }
 
 type DescriptionConfiguration struct {
@@ -137,6 +141,7 @@ func newOpenAPIGenerator(
 	messagesWithEmptySchema []string,
 	protoOneof bool,
 	intNative bool,
+	disableKubeMarkers bool,
 ) *openapiGenerator {
 	mRegistry, err := markers.NewRegistry()
 	if err != nil {
@@ -155,6 +160,7 @@ func newOpenAPIGenerator(
 		protoOneof:                 protoOneof,
 		intNative:                  intNative,
 		markerRegistry:             mRegistry,
+		disableKubeMarkers:         disableKubeMarkers,
 	}
 }
 
@@ -637,6 +643,9 @@ func (g *openapiGenerator) generateMultiLineDescription(desc protomodel.CoreDesc
 }
 
 func (g *openapiGenerator) validationRules(desc protomodel.CoreDesc) []string {
+	if g.disableKubeMarkers {
+		return nil
+	}
 	_, validationRules := g.parseComments(desc)
 	return validationRules
 }

testdata/golden/test7/openapiv3.yaml

@@ -0,0 +1,44 @@
+components:
+  schemas:
+    test7.Msg:
+      description: This is a top-level message.
+      properties:
+        a:
+          format: int32
+          type: integer
+        blist:
+          items:
+            type: string
+          type: array
+        nested:
+          properties:
+            a:
+              type: string
+            b:
+              type: string
+            c:
+              type: string
+            d:
+              type: string
+            defaultValue:
+              type: string
+            embedded:
+              type: string
+            intOrString:
+              type: string
+            schemaless:
+              description: Schemaless field
+              type: string
+          type: object
+        object:
+          description: Should maintain valid Type marker.
+          type: object
+          x-kubernetes-preserve-unknown-fields: true
+        val:
+          x-kubernetes-preserve-unknown-fields: true
+      type: object
+info:
+  title: OpenAPI Spec for Solo APIs.
+  version: ""
+openapi: 3.0.1
+paths: null

testdata/test7/markers.proto

@@ -0,0 +1,72 @@
+syntax = "proto3";
+
+package test7;
+
+import "struct.proto";
+
+// This is a top-level message.
+//
+// +kubebuilder:pruning:PreserveUnknownFields
+message Msg {
+  // +kubebuilder:pruning:PreserveUnknownFields
+  Nested nested = 1;
+
+  // +kubebuilder:validation:Maximum=100
+  // +kubebuilder:validation:Minimum=5
+  // +kubebuilder:validation:ExclusiveMaximum=true
+  // +kubebuilder:validation:ExclusiveMinimum=true
+  // +kubebuilder:validation:MultipleOf=2
+  // +kubebuilder:validation:XValidation:rule="self != 27",message="must not equal 27"
+  int32 a = 2;
+
+  // +kubebuilder:validation:MinItems=1
+  // +kubebuilder:validation:MaxItems=5
+  // +kubebuilder:validation:UniqueItems=true
+  repeated string blist = 3;
+
+  // +kubebuilder:validation:Type=value
+  google.protobuf.Value val = 4;
+
+  // Should maintain valid Type marker.
+  //
+  // +kubebuilder:validation:Type=object
+  google.protobuf.Struct object = 5;
+
+  // This is a nested message.
+  //
+  // +kubebuilder:validation:MinProperties=1
+  // +kubebuilder:validation:MaxProperties=2
+  message Nested {
+    // +kubebuilder:validation:Pattern="^[a-zA-Z0-9_]*$"
+    // +kubebuilder:validation:Required
+    string a = 1;
+
+    // +kubebuilder:validation:Enum=Allow;Forbid;Replace
+    // +kubebuilder:validation:Required
+    string b = 2;
+
+    // +kubebuilder:validation:MaxLength=100
+    // +kubebuilder:validation:MinLength=1
+    string c = 3;
+
+    // +kubebuilder:validation:Format=date-time
+    string d = 4;
+
+    // +kubebuilder:validation:XIntOrString
+    string int_or_string = 5;
+
+    // +kubebuilder:default=forty-two
+	  // +kubebuilder:example=forty-two
+    string default_value = 6;
+
+    // Schemaless field
+    //
+    // +kubebuilder:validation:Schemaless
+    string schemaless = 7;
+
+    // +kubebuilder:validation:EmbeddedResource
+    // +kubebuilder:validation:Nullable
+    string embedded = 8;
+  }
+}
+