client.go

/*
Copyright 2021 gRPC 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 v1

import (
	"k8s.io/apimachinery/pkg/runtime/serializer"
	clientgoscheme "k8s.io/client-go/kubernetes/scheme"
	"k8s.io/client-go/rest"

	grpcv1 "github.com/grpc/test-infra/api/v1"
)

// GRPCTestClientset provides methods to access custom Kubernetes clients for
// testing gRPC.
type GRPCTestClientset interface {
	// LoadTestV1 returns the load test interface, which provides operations on
	// version 1 load tests.
	LoadTestV1() LoadTestInterface
}

type grpcTestV1 struct {
	client rest.Interface
}

func (gv1 *grpcTestV1) LoadTestV1() LoadTestInterface {
	return &loadTestV1{gv1.client}
}

type gRPCTestClient struct {
	client rest.Interface
}

func (gc *gRPCTestClient) LoadTestV1() LoadTestInterface {
	return &loadTestV1{gc.client}
}

// NewForConfig accepts a Kubernetes REST Client config and adds the appropriate
// group, version and serializers to handle requests regarding gRPC test
// resources.
func NewForConfig(c *rest.Config) (GRPCTestClientset, error) {
	config := *c

	gv := grpcv1.GroupVersion
	config.GroupVersion = &gv
	config.APIPath = "/apis"
	config.NegotiatedSerializer = serializer.NewCodecFactory(clientgoscheme.Scheme)
	if config.UserAgent == "" {
		config.UserAgent = rest.DefaultKubernetesUserAgent()
	}

	client, err := rest.UnversionedRESTClientFor(&config)
	if err != nil {
		return nil, err
	}

	return &gRPCTestClient{client}, nil
}