<?php

/*

* Copyright 2019 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.

*/

namespace Google\Auth\HttpHandler;

use GuzzleHttp\ClientInterface;

/**

* Stores an HTTP Client in order to prevent multiple instantiations.

*/

class HttpClientCache

{

/**

* @var ClientInterface|null

*/

private static $httpClient;

/**

* Cache an HTTP Client for later calls.

*

* Passing null will unset the cached client.

*

* @param ClientInterface|null $client

* @return void

*/

public static function setHttpClient(?ClientInterface $client = null)

{

self::$httpClient = $client;

}

/**

* Get the stored HTTP Client, or null.

*

* @return ClientInterface|null

*/

public static function getHttpClient()

{

return self::$httpClient;

}

}