using Knative API with Cloud Run client library

main.go

package main

import (
	"context"
	"log"
	"net/http"

	"golang.org/x/oauth2"
	"golang.org/x/oauth2/google"
	"google.golang.org/api/option"
	"google.golang.org/api/run/v1"
)

func main() {
	ctx := context.Background()

	tr := http.DefaultTransport.(*http.Transport).Clone()

	// TODO set up a cert pool with Kubernetes master CA cert
	tr. TLSClientConfig.InsecureSkipVerify = true
	ts, err := google.DefaultTokenSource(ctx, "cloud-platform")
	if err != nil {
		panic(err)
	}
	atr := &oauth2.Transport{
		Base: tr,
		Source: ts}
	hc := &http.Client{Transport: atr}

	runService, err := run.NewService(ctx,
		option.WithHTTPClient(hc),
		option.WithEndpoint("https://146.148.59.112/"))
	if err != nil {
		panic(err)
	}

	resp, err := runService.Namespaces.Services.Delete("namespaces/default/services/hello").Do()
	if err != nil {
		panic(err)
	}
	log.Println(resp)
}