GAE get service account client

getServiceAccountClient.go

package gaeOauth

import (
	"golang.org/x/net/context"
	"golang.org/x/oauth2/google"
	"golang.org/x/oauth2/jwt"
)

var scopes = []string{}

const (
	email      string = "project's email"
	privateKey string = "project's private key"
)

func getServiceAccountClient(ctx context.Context) *http.Client {
	conf := &jwt.Config{
		Email:      email,
		PrivateKey: []byte(privateKey),
		Scopes:     scopes,
		TokenURL:   google.JWTTokenURL,
	}
	return conf.Client(ctx)
}