pkg/cli/preview/utils.go

// Copyright 2025 Google LLC
//
// 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 preview

import (
	"net/url"

	"k8s.io/apimachinery/pkg/runtime/schema"
	"k8s.io/client-go/rest"
)

// Deprecated: Replace with rest.DefaultServerUrlFor
// DefaultServerUrlFor is shared between IsConfigTransportTLS and RESTClientFor. It
// requires Host and Version to be set prior to being called.
func DefaultServerUrlFor(config *rest.Config) (*url.URL, string, error) {
	// TODO: move the default to secure when the apiserver supports TLS by default
	// config.Insecure is taken to mean "I want HTTPS but don't bother checking the certs against a CA."
	hasCA := len(config.CAFile) != 0 || len(config.CAData) != 0
	hasCert := len(config.CertFile) != 0 || len(config.CertData) != 0
	defaultTLS := hasCA || hasCert || config.Insecure
	host := config.Host
	if host == "" {
		host = "localhost"
	}

	if config.GroupVersion != nil {
		return rest.DefaultServerURL(host, config.APIPath, *config.GroupVersion, defaultTLS)
	}
	return rest.DefaultServerURL(host, config.APIPath, schema.GroupVersion{}, defaultTLS)
}