nextcloud/apps/files_external/3rdparty/aws-sdk-php/Aws/Common/Credentials/CacheableCredentials.php

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<?php
/**
* Copyright 2010-2013 Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License").
* You may not use this file except in compliance with the License.
* A copy of the License is located at
*
* http://aws.amazon.com/apache2.0
*
* or in the "license" file accompanying this file. This file 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 Aws\Common\Credentials;
use Guzzle\Cache\CacheAdapterInterface;
/**
* Credentials decorator used to implement caching credentials
*/
class CacheableCredentials extends AbstractRefreshableCredentials
{
/**
* @var CacheAdapterInterface Cache adapter used to store credentials
*/
protected $cache;
/**
* @var string Cache key used to store the credentials
*/
protected $cacheKey;
/**
* CacheableCredentials is a decorator that decorates other credentials
*
* @param CredentialsInterface $credentials Credentials to adapt
* @param CacheAdapterInterface $cache Cache to use to store credentials
* @param string $cacheKey Cache key of the credentials
*/
public function __construct(CredentialsInterface $credentials, CacheAdapterInterface $cache, $cacheKey)
{
$this->credentials = $credentials;
$this->cache = $cache;
$this->cacheKey = $cacheKey;
}
/**
* Attempt to get new credentials from cache or from the adapted object
*/
protected function refresh()
{
if (!$cache = $this->cache->fetch($this->cacheKey)) {
// The credentials were not found, so try again and cache if new
$this->credentials->getAccessKeyId();
if (!$this->credentials->isExpired()) {
// The credentials were updated, so cache them
$this->cache->save($this->cacheKey, $this->credentials, $this->credentials->getExpiration() - time());
}
} else {
// The credentials were found in cache, so update the adapter object
// if the cached credentials are not expired
if (!$cache->isExpired()) {
$this->credentials->setAccessKeyId($cache->getAccessKeyId());
$this->credentials->setSecretKey($cache->getSecretKey());
$this->credentials->setSecurityToken($cache->getSecurityToken());
$this->credentials->setExpiration($cache->getExpiration());
}
}
}
}