Provider.php
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<?php
namespace AlibabaCloud\Client\Credentials\Providers;
use AlibabaCloud\Client\Clients\Client;
/**
* Class Provider
*
* @package AlibabaCloud\Client\Credentials\Providers
*/
class Provider
{
/**
* For TSC Duration Seconds
*/
const DURATION_SECONDS = 3600;
/**
* @var array
*/
protected static $credentialsCache = [];
/**
* Expiration time slot for temporary security credentials.
*
* @var int
*/
protected $expirationSlot = 180;
/**
* @var Client
*/
protected $client;
/**
* @var string
*/
protected $error = 'Result contains no credentials';
/**
* CredentialTrait constructor.
*
* @param Client $client
*/
public function __construct(Client $client)
{
$this->client = $client;
}
/**
* Get the credentials from the cache in the validity period.
*
* @return array|null
*/
public function getCredentialsInCache()
{
if (isset(self::$credentialsCache[$this->key()])) {
$result = self::$credentialsCache[$this->key()];
if (\strtotime($result['Expiration']) - \time() >= $this->expirationSlot) {
return $result;
}
unset(self::$credentialsCache[$this->key()]);
}
return null;
}
/**
* Get the toString of the credentials as the key.
*
* @return string
*/
protected function key()
{
return (string)$this->client->getCredential();
}
/**
* Cache credentials.
*
* @param array $credential
*/
protected function cache(array $credential)
{
self::$credentialsCache[$this->key()] = $credential;
}
}