diff --git a/.gitignore b/.gitignore index 14e8748ee4e..3544ff580b7 100644 --- a/.gitignore +++ b/.gitignore @@ -82,6 +82,7 @@ crashlytics.properties crashlytics-build.properties # Ignore generator binary output file +kubernetes-model-generator/openapi/generator/generator kubernetes-model-generator/*/generate extensions/*/generator/generate diff --git a/Makefile b/Makefile index 301c3957ca0..325bf0b816f 100644 --- a/Makefile +++ b/Makefile @@ -23,6 +23,11 @@ clean-java: .PHONY: clean clean: clean-java +.PHONY: generate-openapi +generate-openapi: + cd kubernetes-model-generator/openapi/generator && go build + cd kubernetes-model-generator/openapi/generator && ./generator + .PHONY: generate-model generate-model: cd kubernetes-model-generator && ./generateModel.sh diff --git a/kubernetes-model-generator/openapi/generator/README.md b/kubernetes-model-generator/openapi/generator/README.md new file mode 100644 index 00000000000..6a7c17e5628 --- /dev/null +++ b/kubernetes-model-generator/openapi/generator/README.md @@ -0,0 +1,23 @@ +# Go OpenAPI generator + +Generates OpenAPI 3.0 specification from Go code. + +Intended for those types that have incomplete custom resource definition (CRD) files and types that are not exposed by the Kubernetes API server. + +## Generated Schemas + +| Schema | Description | +|------------------------|---------------------------------------------------------------------| +| kubernetes-config | Types used in the Kuberenetes configuration file ( `.kube/config` ) | +| admission-registration | Additional types required for the admission registration API | + + +## Usage + +```shell +./generator $pathToTargetDirectory +``` + +## Additional notes and resources + +- [OpenAPI definition for AdmissionReview](https://github.com/kubernetes/kubernetes/issues/84081) diff --git a/kubernetes-model-generator/openapi/generator/go.mod b/kubernetes-model-generator/openapi/generator/go.mod new file mode 100644 index 00000000000..970516e24fc --- /dev/null +++ b/kubernetes-model-generator/openapi/generator/go.mod @@ -0,0 +1,35 @@ +module github.com/fabric8io/kubernetes-client/kubernetes-model-generator/openapi/generator + +go 1.22.0 + +require ( + github.com/getkin/kin-openapi v0.125.0 + k8s.io/api v0.30.2 + k8s.io/apimachinery v0.30.2 + k8s.io/client-go v0.30.2 +) + +require ( + github.com/go-logr/logr v1.4.1 // indirect + github.com/go-openapi/jsonpointer v0.20.2 // indirect + github.com/go-openapi/swag v0.22.8 // indirect + github.com/gogo/protobuf v1.3.2 // indirect + github.com/google/gofuzz v1.2.0 // indirect + github.com/invopop/yaml v0.2.0 // indirect + github.com/josharian/intern v1.0.0 // indirect + github.com/json-iterator/go v1.1.12 // indirect + github.com/mailru/easyjson v0.7.7 // indirect + github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect + github.com/modern-go/reflect2 v1.0.2 // indirect + github.com/mohae/deepcopy v0.0.0-20170929034955-c48cc78d4826 // indirect + github.com/perimeterx/marshmallow v1.1.5 // indirect + golang.org/x/net v0.23.0 // indirect + golang.org/x/text v0.14.0 // indirect + gopkg.in/inf.v0 v0.9.1 // indirect + gopkg.in/yaml.v2 v2.4.0 // indirect + gopkg.in/yaml.v3 v3.0.1 // indirect + k8s.io/klog/v2 v2.120.1 // indirect + k8s.io/utils v0.0.0-20230726121419-3b25d923346b // indirect + sigs.k8s.io/json v0.0.0-20221116044647-bc3834ca7abd // indirect + sigs.k8s.io/structured-merge-diff/v4 v4.4.1 // indirect +) diff --git a/kubernetes-model-generator/openapi/generator/go.sum b/kubernetes-model-generator/openapi/generator/go.sum new file mode 100644 index 00000000000..2b7422267be --- /dev/null +++ b/kubernetes-model-generator/openapi/generator/go.sum @@ -0,0 +1,130 @@ +github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= +github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c= +github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= +github.com/emicklei/go-restful/v3 v3.11.0 h1:rAQeMHw1c7zTmncogyy8VvRZwtkmkZ4FxERmMY4rD+g= +github.com/emicklei/go-restful/v3 v3.11.0/go.mod h1:6n3XBCmQQb25CM2LCACGz8ukIrRry+4bhvbpWn3mrbc= +github.com/getkin/kin-openapi v0.125.0 h1:jyQCyf2qXS1qvs2U00xQzkGCqYPhEhZDmSmVt65fXno= +github.com/getkin/kin-openapi v0.125.0/go.mod h1:wb1aSZA/iWmorQP9KTAS/phLj/t17B5jT7+fS8ed9NM= +github.com/go-logr/logr v1.4.1 h1:pKouT5E8xu9zeFC39JXRDukb6JFQPXM5p5I91188VAQ= +github.com/go-logr/logr v1.4.1/go.mod h1:9T104GzyrTigFIr8wt5mBrctHMim0Nb2HLGrmQ40KvY= +github.com/go-openapi/jsonpointer v0.20.2 h1:mQc3nmndL8ZBzStEo3JYF8wzmeWffDH4VbXz58sAx6Q= +github.com/go-openapi/jsonpointer v0.20.2/go.mod h1:bHen+N0u1KEO3YlmqOjTT9Adn1RfD91Ar825/PuiRVs= +github.com/go-openapi/jsonreference v0.20.2 h1:3sVjiK66+uXK/6oQ8xgcRKcFgQ5KXa2KvnJRumpMGbE= +github.com/go-openapi/jsonreference v0.20.2/go.mod h1:Bl1zwGIM8/wsvqjsOQLJ/SH+En5Ap4rVB5KVcIDZG2k= +github.com/go-openapi/swag 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a/kubernetes-model-generator/openapi/generator/main.go b/kubernetes-model-generator/openapi/generator/main.go new file mode 100644 index 00000000000..a2afacd4de5 --- /dev/null +++ b/kubernetes-model-generator/openapi/generator/main.go @@ -0,0 +1,179 @@ +/** + * Copyright (C) 2015 Red Hat, Inc. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package main + +import ( + "github.com/getkin/kin-openapi/openapi3" + v1admission "k8s.io/api/admission/v1" + v1beta1admission "k8s.io/api/admission/v1beta1" + configapi "k8s.io/client-go/tools/clientcmd/api/v1" + "os" + "path/filepath" + "reflect" + "strings" +) + +type Schemas struct { + Types []reflect.Type + Name string +} + +func main() { + var targetDirectory string + if len(os.Args) > 1 { + targetDirectory = os.Args[1] + } else { + targetDirectory = "." + } + err := os.MkdirAll(targetDirectory, 0755) + if err != nil { + panic(err) + } + schemas := []Schemas{ + {[]reflect.Type{reflect.TypeOf(configapi.Config{})}, "kubernetes-config"}, + {[]reflect.Type{ + reflect.TypeOf(v1admission.AdmissionRequest{}), + reflect.TypeOf(v1beta1admission.AdmissionRequest{}), + }, "admission-registration"}, + //{[]reflect.Type{ + // reflect.TypeOf(metav1.GroupKind{}), + // reflect.TypeOf(metav1.GroupVersionKind{}), + // reflect.TypeOf(metav1.GroupVersionResource{}), + //}, "api-machinery-extra"}, + } + generate(schemas, targetDirectory) +} + +func generate(schemas []Schemas, targetDirectory string) { + for _, schema := range schemas { + swagger := &openapi3.T{ + OpenAPI: "3.0.0", + Info: &openapi3.Info{ + Title: schema.Name, + Version: "0.0.0", + }, + Components: &openapi3.Components{ + Schemas: extractSchemas(schema.Types), + }, + Paths: &openapi3.Paths{}, + } + json, err := swagger.MarshalJSON() + if err != nil { + panic(err) + } + err = os.WriteFile(filepath.Join(targetDirectory, schema.Name+".json"), json, 0644) + if err != nil { + panic(err) + } + } +} + +func extractSchemas(types []reflect.Type) openapi3.Schemas { + schemas := make(openapi3.Schemas) + for _, t := range types { + generateType(schemas, t) + } + return schemas +} + +func generateType(schemas openapi3.Schemas, t reflect.Type) { + if t.Kind() != reflect.Struct { + return + } + value := &openapi3.SchemaRef{Value: openapi3.NewObjectSchema()} + value.Value.Properties = make(map[string]*openapi3.SchemaRef) + for it := 0; it < t.NumField(); it++ { + field := t.Field(it) + fieldName := field.Tag.Get("json") + if strings.Index(fieldName, ",") > 0 { + fieldName = strings.Split(fieldName, ",")[0] + } + value.Value.Properties[fieldName] = openApiKind(field.Type) + + // Recurse to generate the schema for the subtypes + switch field.Type.Kind() { + case reflect.Struct: + generateType(schemas, field.Type) + case reflect.Ptr, reflect.Array, reflect.Slice: + generateType(schemas, field.Type.Elem()) + } + } + schemas[getKey(t)] = value +} + +func openApiKind(t reflect.Type) *openapi3.SchemaRef { + switch t.Kind() { + case reflect.Ptr: + return openApiKind(t.Elem()) + case reflect.Struct: + return &openapi3.SchemaRef{ + Ref: "#/components/schemas/" + getKey(t), + } + case reflect.String: + return &openapi3.SchemaRef{ + Value: openapi3.NewStringSchema(), + } + case reflect.Bool: + return &openapi3.SchemaRef{ + Value: openapi3.NewBoolSchema(), + } + case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32: + return &openapi3.SchemaRef{ + Value: openapi3.NewIntegerSchema(), + } + case reflect.Array, reflect.Slice: + // Byte-arrays as String (Fabric8) + if t.Elem().Kind() == reflect.Uint8 { + return &openapi3.SchemaRef{ + Value: openapi3.NewStringSchema(), + } + } + return &openapi3.SchemaRef{ + Value: &openapi3.Schema{ + Type: &openapi3.Types{openapi3.TypeArray}, + Items: openApiKind(t.Elem()), + }, + } + case reflect.Map: + return &openapi3.SchemaRef{ + Value: &openapi3.Schema{ + Type: &openapi3.Types{openapi3.TypeObject}, + AdditionalProperties: openapi3.AdditionalProperties{ + Schema: openApiKind(t.Elem()), + }, + }, + } + default: + println("unhandled default case " + t.Kind().String()) + return &openapi3.SchemaRef{ + Value: openapi3.NewStringSchema(), + } + } +} + +func getKey(t reflect.Type) string { + pkg := "" + for _, segment := range strings.Split(t.PkgPath(), "/") { + domainParts := strings.Split(segment, ".") + for i := len(domainParts) - 1; i >= 0; i-- { + if len(pkg) > 0 { + pkg += "." + } + pkg += domainParts[i] + } + } + return pkg + "." + t.Name() +}