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✏️ Editing: GCECache.php

<?php

/*
 * Copyright 2020 Google Inc.
 *
 * 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\Site_Kit_Dependencies\Google\Auth;

use Google\Site_Kit_Dependencies\Google\Auth\Credentials\GCECredentials;
use Google\Site_Kit_Dependencies\Psr\Cache\CacheItemPoolInterface;
/**
 * A class to implement caching for calls to GCECredentials::onGce. This class
 * is used automatically when you pass a `Psr\Cache\CacheItemPoolInterface`
 * cache object to `ApplicationDefaultCredentials::getCredentials`.
 *
 * ```
 * $sysvCache = new Google\Auth\SysvCacheItemPool();
 * $creds = Google\Auth\ApplicationDefaultCredentials::getCredentials(
 *     $scope,
 *     null,
 *     null,
 *     $sysvCache
 * );
 * ```
 */
class GCECache
{
    const GCE_CACHE_KEY = 'google_auth_on_gce_cache';
    use CacheTrait;
    /**
     * @param array<mixed> $cacheConfig Configuration for the cache
     * @param CacheItemPoolInterface $cache
     */
    public function __construct(?array $cacheConfig = null, ?\Google\Site_Kit_Dependencies\Psr\Cache\CacheItemPoolInterface $cache = null)
    {
        $this->cache = $cache;
        $this->cacheConfig = \array_merge(['lifetime' => 1500, 'prefix' => ''], (array) $cacheConfig);
    }
    /**
     * Caches the result of onGce so the metadata server is not called multiple
     * times.
     *
     * @param callable $httpHandler callback which delivers psr7 request
     * @return bool True if this a GCEInstance, false otherwise
     */
    public function onGce(?callable $httpHandler = null)
    {
        if (\is_null($this->cache)) {
            return \Google\Site_Kit_Dependencies\Google\Auth\Credentials\GCECredentials::onGce($httpHandler);
        }
        $cacheKey = self::GCE_CACHE_KEY;
        $onGce = $this->getCachedValue($cacheKey);
        if (\is_null($onGce)) {
            $onGce = \Google\Site_Kit_Dependencies\Google\Auth\Credentials\GCECredentials::onGce($httpHandler);
            $this->setCachedValue($cacheKey, $onGce);
        }
        return $onGce;
    }
}

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