context.go

/*
Copyright 2021 The Katanomi 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 scheme contains functions to add and retrieve scheme from context
package scheme

import (
	"context"

	"k8s.io/apimachinery/pkg/runtime"
)

type schemeCtxKey struct{}

func WithScheme(ctx context.Context, scheme *runtime.Scheme) context.Context {
	return context.WithValue(ctx, schemeCtxKey{}, scheme)
}

func Scheme(ctx context.Context) *runtime.Scheme {
	val := ctx.Value(schemeCtxKey{})
	if val == nil {
		return nil
	}
	return val.(*runtime.Scheme)
}