include the client-gen arguments in the generated files

cmd/libs/go2idl/client-gen/args/args.go

@@ -41,4 +41,6 @@ type Args struct {
 	ClientsetOnly bool
 	// FakeClient determines if client-gen generates the fake clients.
 	FakeClient bool
+	// CmdArgs is the command line arguments supplied when the client-gen is called.
+	CmdArgs string
 }

cmd/libs/go2idl/client-gen/generators/client_generator.go

@@ -18,6 +18,7 @@ limitations under the License.
 package generators
 
 import (
+	"fmt"
 	"os"
 	"path/filepath"
 	"strings"
@@ -153,6 +154,11 @@ func Packages(context *generator.Context, arguments *args.GeneratorArgs) generat
 		glog.Fatalf("cannot convert arguments.CustomArgs to clientgenargs.Args")
 	}
 
+	if len(customArgs.CmdArgs) != 0 {
+		boilerplate = append(boilerplate, []byte(fmt.Sprintf("\n// This file is generated by client-gen with arguments: %s\n\n", customArgs.CmdArgs))...)
+	} else {
+		boilerplate = append(boilerplate, []byte(fmt.Sprintf("\n// This file is generated by client-gen with the default arguments.\n\n"))...)
+	}
 	gvToTypes := map[unversioned.GroupVersion][]*types.Type{}
 	for gv, inputDir := range customArgs.GroupVersionToInputPath {
 		p := context.Universe.Package(inputDir)

cmd/libs/go2idl/client-gen/main.go

@@ -74,6 +74,14 @@ func parseInputVersions() (paths []string, groupVersions []unversioned.GroupVers
 func main() {
 	arguments := args.Default()
 	flag.Parse()
+	var cmdArgs string
+	flag.VisitAll(func(f *flag.Flag) {
+		if !f.Changed {
+			return
+		}
+		cmdArgs = cmdArgs + fmt.Sprintf("--%s=%s ", f.Name, f.Value)
+	})
+
 	dependencies := []string{
 		"k8s.io/kubernetes/pkg/fields",
 		"k8s.io/kubernetes/pkg/labels",
@@ -97,6 +105,7 @@ func main() {
 			"k8s.io/kubernetes/cmd/libs/go2idl/client-gen/testoutput/clientset_generated/",
 			false,
 			false,
+			cmdArgs,
 		}
 	} else {
 		inputPath, groupVersions, gvToPath, err := parseInputVersions()
@@ -119,6 +128,7 @@ func main() {
 			*clientsetPath,
 			*clientsetOnly,
 			*fakeClient,
+			cmdArgs,
 		}
 	}