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<?php |
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namespace TreeHouse\Keystone\Client; |
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use GuzzleHttp\Client as GuzzleClient; |
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use GuzzleHttp\ClientInterface; |
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use GuzzleHttp\Exception\RequestException; |
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use GuzzleHttp\HandlerStack; |
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use Psr\Log\LoggerInterface; |
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use TreeHouse\Cache\CacheInterface; |
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use TreeHouse\Keystone\Client\Middleware\Middleware; |
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use TreeHouse\Keystone\Client\Model\Tenant; |
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/** |
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* Factory service to create a Guzzle client with Keystone authentication |
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* support. This factory also deals with expiring tokens, by automatically |
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* re-authenticating. |
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* |
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* Usage: |
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* |
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* ``` |
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* $tenant = new Tenant($tokenUrl, $username, $password, $serviceType); |
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* $client = $factory->createClient($tenant); |
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* ``` |
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*/ |
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class ClientFactory |
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{ |
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/** |
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* The cache where tokens are stored. |
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* |
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* @var CacheInterface |
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*/ |
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protected $cache; |
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/** |
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* The class to construct a Guzzle client with. |
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* |
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* @var string |
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*/ |
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protected $clientClass; |
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/** |
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* Optional logger. |
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* |
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* @var LoggerInterface |
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*/ |
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protected $logger; |
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/** |
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* @param CacheInterface $cache |
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* @param string $class |
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* @param LoggerInterface $logger |
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*/ |
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public function __construct(CacheInterface $cache, $class = null, LoggerInterface $logger = null) |
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{ |
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$this->cache = $cache; |
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$this->clientClass = $class ?: GuzzleClient::class; |
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$this->logger = $logger; |
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} |
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/** |
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* Creates a Guzzle client for communicating with a Keystone service. |
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* |
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* @param Tenant $tenant The keystone tenant to authenticate with |
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* @param array $config The client configuration |
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* @param string $class Optionally override the Guzzle client class |
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* |
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* @throws RequestException When a new token could not be requested. |
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* |
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* @return ClientInterface |
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*/ |
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public function createClient(Tenant $tenant, array $config = [], $class = null) |
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{ |
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if (null === $class) { |
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$class = $this->clientClass; |
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} |
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$pool = new TokenPool($tenant, $this->cache, $this->logger); |
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$signer = new RequestSigner($pool); |
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$stack = HandlerStack::create(); |
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$stack->before('http_errors', Middleware::signRequest($signer), 'signer'); |
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$stack->before('http_errors', Middleware::reauthenticate($signer), 'reauth'); |
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return new $class(array_merge($config, [ |
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'handler' => $stack, |
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'token_pool' => $pool, |
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])); |
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} |
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} |
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treehouselabs /
keystone-client
