k8sclient.go

// Copyright 2022 Antrea 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 utils

import (
	"k8s.io/apimachinery/pkg/runtime"
	"k8s.io/client-go/rest"
	"sigs.k8s.io/controller-runtime/pkg/client"
	"sigs.k8s.io/controller-runtime/pkg/client/config"
)

// NewK8sClient returns K8s client interface.
func NewK8sClient(scheme *runtime.Scheme, cluster string) (client.Client, error) {
	var conf *rest.Config
	var err error
	if len(cluster) > 0 {
		conf, err = config.GetConfigWithContext(cluster)
		if err != nil {
			return nil, err
		}
	} else {
		conf = config.GetConfigOrDie()
	}
	k8sClient, err := client.New(conf, client.Options{Scheme: scheme})
	if err != nil {
		return nil, err
	}
	return k8sClient, nil
}