Remove unused openapi-gen cmd

staging/src/k8s.io/code-generator/cmd/openapi-gen/BUILD

-package(default_visibility = ["//visibility:public"])
-
-load(
-    "@io_bazel_rules_go//go:def.bzl",
-    "go_binary",
-    "go_library",
-)
-
-go_binary(
-    name = "openapi-gen",
-    embed = [":go_default_library"],
-)
-
-go_library(
-    name = "go_default_library",
-    srcs = ["main.go"],
-    importmap = "k8s.io/kubernetes/vendor/k8s.io/code-generator/cmd/openapi-gen",
-    importpath = "k8s.io/code-generator/cmd/openapi-gen",
-    deps = [
-        "//staging/src/k8s.io/code-generator/cmd/openapi-gen/args:go_default_library",
-        "//staging/src/k8s.io/code-generator/pkg/util:go_default_library",
-        "//vendor/github.com/golang/glog:go_default_library",
-        "//vendor/github.com/spf13/pflag:go_default_library",
-        "//vendor/k8s.io/gengo/args:go_default_library",
-        "//vendor/k8s.io/kube-openapi/pkg/generators:go_default_library",
-    ],
-)
-
-filegroup(
-    name = "package-srcs",
-    srcs = glob(["**"]),
-    tags = ["automanaged"],
-    visibility = ["//visibility:private"],
-)
-
-filegroup(
-    name = "all-srcs",
-    srcs = [
-        ":package-srcs",
-        "//staging/src/k8s.io/code-generator/cmd/openapi-gen/args:all-srcs",
-    ],
-    tags = ["automanaged"],
-)

staging/src/k8s.io/code-generator/cmd/openapi-gen/README

-# Generate OpenAPI definitions
-
-- To generate definition for a specific type or package add "+k8s:openapi-gen=true" tag to the type/package comment lines.
-- To exclude a type or a member from a tagged package/type, add "+k8s:openapi-gen=false" tag to the comment lines.
-
-# OpenAPI Extensions
-OpenAPI spec can have extensions on types. To define one or more extensions on a type or its member
-add "+k8s:openapi-gen=x-kubernetes-$NAME:$VALUE" to the comment lines before type/member. A type/member can
-have multiple extensions. The rest of the line in the comment will be used as $VALUE so there is no need to
-escape or quote the value string. Extensions can be use to pass more information to client generators or
-documentation generators. For example a type my have a friendly name to be displayed in documentation or
-being used in a client's fluent interface.
-

staging/src/k8s.io/code-generator/cmd/openapi-gen/args/BUILD

-load("@io_bazel_rules_go//go:def.bzl", "go_library")
-
-go_library(
-    name = "go_default_library",
-    srcs = ["args.go"],
-    importmap = "k8s.io/kubernetes/vendor/k8s.io/code-generator/cmd/openapi-gen/args",
-    importpath = "k8s.io/code-generator/cmd/openapi-gen/args",
-    visibility = ["//visibility:public"],
-    deps = [
-        "//vendor/github.com/spf13/pflag:go_default_library",
-        "//vendor/k8s.io/gengo/args:go_default_library",
-    ],
-)
-
-filegroup(
-    name = "package-srcs",
-    srcs = glob(["**"]),
-    tags = ["automanaged"],
-    visibility = ["//visibility:private"],
-)
-
-filegroup(
-    name = "all-srcs",
-    srcs = [":package-srcs"],
-    tags = ["automanaged"],
-    visibility = ["//visibility:public"],
-)

staging/src/k8s.io/code-generator/cmd/openapi-gen/args/args.go

-/*
-Copyright 2016 The Kubernetes Authors.
-
-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 args
-
-import (
-	"fmt"
-
-	"github.com/spf13/pflag"
-	"k8s.io/gengo/args"
-)
-
-// CustomArgs is used by the gengo framework to pass args specific to this generator.
-type CustomArgs struct{}
-
-// NewDefaults returns default arguments for the generator.
-func NewDefaults() (*args.GeneratorArgs, *CustomArgs) {
-	genericArgs := args.Default().WithoutDefaultFlagParsing()
-	customArgs := &CustomArgs{}
-	genericArgs.CustomArgs = customArgs
-	genericArgs.OutputFileBaseName = "openapi_generated"
-	return genericArgs, customArgs
-}
-
-// AddFlags add the generator flags to the flag set.
-func (ca *CustomArgs) AddFlags(fs *pflag.FlagSet) {}
-
-// Validate checks the given arguments.
-func Validate(genericArgs *args.GeneratorArgs) error {
-	_ = genericArgs.CustomArgs.(*CustomArgs)
-
-	if len(genericArgs.OutputFileBaseName) == 0 {
-		return fmt.Errorf("output file base name cannot be empty")
-	}
-	if len(genericArgs.OutputPackagePath) == 0 {
-		return fmt.Errorf("output package cannot be empty")
-	}
-
-	return nil
-}

staging/src/k8s.io/code-generator/cmd/openapi-gen/main.go

-/*
-Copyright 2016 The Kubernetes Authors.
-
-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.
-*/
-
-// This package generates openAPI definition file to be used in open API spec generation on API servers. To generate
-// definition for a specific type or package add "+k8s:openapi-gen=true" tag to the type/package comment lines. To
-// exclude a type from a tagged package, add "+k8s:openapi-gen=false" tag to the type comment lines.
-package main
-
-import (
-	"flag"
-	"path/filepath"
-
-	"github.com/golang/glog"
-	"github.com/spf13/pflag"
-	"k8s.io/gengo/args"
-	"k8s.io/kube-openapi/pkg/generators"
-
-	generatorargs "k8s.io/code-generator/cmd/openapi-gen/args"
-	"k8s.io/code-generator/pkg/util"
-)
-
-func main() {
-	genericArgs, customArgs := generatorargs.NewDefaults()
-
-	// Override defaults.
-	// TODO: move this out of openapi-gen
-	genericArgs.GoHeaderFilePath = filepath.Join(args.DefaultSourceTree(), util.BoilerplatePath())
-
-	genericArgs.AddFlags(pflag.CommandLine)
-	customArgs.AddFlags(pflag.CommandLine)
-	flag.Set("logtostderr", "true")
-	pflag.CommandLine.AddGoFlagSet(flag.CommandLine)
-	pflag.Parse()
-
-	if err := generatorargs.Validate(genericArgs); err != nil {
-		glog.Fatalf("Error: %v", err)
-	}
-
-	// Run it.
-	if err := genericArgs.Execute(
-		generators.NameSystems(),
-		generators.DefaultNameSystem(),
-		generators.Packages,
-	); err != nil {
-		glog.Fatalf("Error: %v", err)
-	}
-	glog.V(2).Info("Completed successfully.")
-}