Custom resource definition

Co-authored-by: Mathieu Lonjaret <mathieu.lonjaret@gmail.com>

vendor/k8s.io/code-generator/cmd/conversion-gen/args/args.go

@@ -0,0 +1,83 @@
+/*
+Copyright 2017 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"
+)
+
+// DefaultBasePeerDirs are the peer-dirs nearly everybody will use, i.e. those coming from
+// apimachinery.
+var DefaultBasePeerDirs = []string{
+	"k8s.io/apimachinery/pkg/apis/meta/v1",
+	"k8s.io/apimachinery/pkg/conversion",
+	"k8s.io/apimachinery/pkg/runtime",
+}
+
+// CustomArgs is used by the gengo framework to pass args specific to this generator.
+type CustomArgs struct {
+	// Base peer dirs which nearly everybody will use, i.e. outside of Kubernetes core. Peer dirs
+	// are declared to make the generator pick up manually written conversion funcs from external
+	// packages.
+	BasePeerDirs []string
+
+	// Custom peer dirs which are application specific. Peer dirs are declared to make the
+	// generator pick up manually written conversion funcs from external packages.
+	ExtraPeerDirs []string
+
+	// SkipUnsafe indicates whether to generate unsafe conversions to improve the efficiency
+	// of these operations. The unsafe operation is a direct pointer assignment via unsafe
+	// (within the allowed uses of unsafe) and is equivalent to a proposed Golang change to
+	// allow structs that are identical to be assigned to each other.
+	SkipUnsafe bool
+}
+
+// NewDefaults returns default arguments for the generator.
+func NewDefaults() (*args.GeneratorArgs, *CustomArgs) {
+	genericArgs := args.Default().WithoutDefaultFlagParsing()
+	customArgs := &CustomArgs{
+		BasePeerDirs: DefaultBasePeerDirs,
+		SkipUnsafe:   false,
+	}
+	genericArgs.CustomArgs = customArgs
+	genericArgs.OutputFileBaseName = "conversion_generated"
+	return genericArgs, customArgs
+}
+
+// AddFlags add the generator flags to the flag set.
+func (ca *CustomArgs) AddFlags(fs *pflag.FlagSet) {
+	pflag.CommandLine.StringSliceVar(&ca.BasePeerDirs, "base-peer-dirs", ca.BasePeerDirs,
+		"Comma-separated list of apimachinery import paths which are considered, after tag-specified peers, for conversions. Only change these if you have very good reasons.")
+	pflag.CommandLine.StringSliceVar(&ca.ExtraPeerDirs, "extra-peer-dirs", ca.ExtraPeerDirs,
+		"Application specific comma-separated list of import paths which are considered, after tag-specified peers and base-peer-dirs, for conversions.")
+	pflag.CommandLine.BoolVar(&ca.SkipUnsafe, "skip-unsafe", ca.SkipUnsafe,
+		"If true, will not generate code using unsafe pointer conversions; resulting code may be slower.")
+}
+
+// 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")
+	}
+
+	return nil
+}