1<?php
2/*
3 * Copyright 2019 Google LLC
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
8 *
9 *     http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17
18namespace Google\Auth\HttpHandler;
19
20use GuzzleHttp\ClientInterface;
21
22/**
23 * Stores an HTTP Client in order to prevent multiple instantiations.
24 */
25class HttpClientCache
26{
27    /**
28     * @var ClientInterface|null
29     */
30    private static $httpClient;
31
32    /**
33     * Cache an HTTP Client for later calls.
34     *
35     * Passing null will unset the cached client.
36     *
37     * @param ClientInterface|null $client
38     * @return void
39     */
40    public static function setHttpClient(ClientInterface $client = null)
41    {
42        self::$httpClient = $client;
43    }
44
45    /**
46     * Get the stored HTTP Client, or null.
47     *
48     * @return ClientInterface|null
49     */
50    public static function getHttpClient()
51    {
52        return self::$httpClient;
53    }
54}
55