/**
* @param string $token
* @param int $maxRetries
*/
public function __construct($token, $maxRetries = self::MAX_RETRIES)
{
$handler = new GuzzleClient(['base_url' => self::BASE_URL, 'defaults' => ['headers' => ['Content-Type' => 'application/json', 'Accept' => 'application/json', 'Authorization' => sprintf('Bearer %s', $token)]]]);
$retry = new RetrySubscriber(['filter' => RetrySubscriber::createChainFilter([RetrySubscriber::createCurlFilter([CURLE_PARTIAL_FILE]), RetrySubscriber::createStatusFilter([500, 502, 503, 504])]), 'max' => $maxRetries]);
$handler->getEmitter()->attach($retry);
$this->client = new Client($handler);
}
public function testCreatesCustomCurlFilter()
{
$f = RetrySubscriber::createCurlFilter([CURLE_OK]);
$e = $this->createEvent(null, null, null, ['curl_result' => CURLE_RECV_ERROR]);
$this->assertFalse($f(1, $e));
$e = $this->createEvent(null, null, null, ['curl_result' => CURLE_OK]);
$this->assertTrue($f(0, $e));
}
/**
* Creates a Guzzle HTTP client and initializes it with the given configuration.
* @param Collection $config
* @return HttpClient
*/
protected function loadHttpClient(Collection $config)
{
$client = new HttpClient($config['http_client_options'] ?: []);
// attach retry subscriber
$maxRetries = (int) $config['max_retries'];
if (0 < $maxRetries) {
$client->getEmitter()->attach(new RetrySubscriber(['max' => $maxRetries, 'filter' => RetrySubscriber::createChainFilter([RetrySubscriber::createStatusFilter(), RetrySubscriber::createCurlFilter()])]));
}
return $client;
}
public function getRetryRaw($url, array $headers = [], $tries = 3, array $status = null, $delay = null, array $customChain = null)
{
$status = $status ?: [500, 503];
$retry = new Retry(['filter' => Retry::createChainFilter($customChain ?: [Retry::createIdempotentFilter(), Retry::createCurlFilter(), Retry::createStatusFilter($status)]), 'max' => $tries, 'delay' => function ($retries, AbstractTransferEvent $e) use($delay) {
info('Delaying...');
return $delay ?: (int) pow(2, $retries - 1);
}]);
$client = new HttpClient();
$client->getEmitter()->attach($retry);
return $client->get($url, ['headers' => $headers]);
}
private function getHttpClientFromConfig(array $config)
{
// If a client was provided, return it.
if (isset($config['http_client'])) {
return $config['http_client'];
}
// Create a Guzzle HttpClient.
$clientOptions = isset($config['http_client_options']) ? $config['http_client_options'] : [];
$client = new HttpClient($clientOptions);
// Attach request retry logic.
$client->getEmitter()->attach(new RetrySubscriber(['max' => $config['max_retries'], 'filter' => RetrySubscriber::createChainFilter([RetrySubscriber::createStatusFilter(), RetrySubscriber::createCurlFilter()])]));
return $client;
}
/**
* Create expontential backoff for GuzzleClient
*
* options
* - maxRetries: (integer) max retries count
* - http
* - retryHeader (string) header containing retry time header
* - codes (array) list of status codes to retry on
* - curl
* - codes (array) list of error codes to retry on
*
* @param array $options
* @return RetrySubscriber
*/
private static function createBackoff(array $options)
{
$headerName = isset($options['http']['retryHeader']) ? $options['http']['retryHeader'] : 'Retry-After';
$httpRetryCodes = isset($options['http']['codes']) ? $options['http']['codes'] : [500, 502, 503, 504, 408, 420, 429];
$maxRetries = isset($options['maxRetries']) ? (int) $options['maxRetries'] : 10;
$curlRetryCodes = isset($options['curl']['codes']) ? $options['curl']['codes'] : [CURLE_OPERATION_TIMEOUTED, CURLE_COULDNT_RESOLVE_HOST, CURLE_COULDNT_CONNECT, CURLE_SSL_CONNECT_ERROR, CURLE_GOT_NOTHING];
return new RetrySubscriber(['filter' => RetrySubscriber::createChainFilter([RetrySubscriber::createStatusFilter($httpRetryCodes), RetrySubscriber::createCurlFilter($curlRetryCodes)]), 'max' => $maxRetries, 'delay' => function ($retries, AbstractTransferEvent $event) use($headerName) {
$delay = self::getRetryDelay($retries, $event, $headerName);
$errData = ["http_code" => !empty($event->getTransferInfo()['http_code']) ? $event->getTransferInfo()['http_code'] : null, "body" => is_null($event->getResponse()) ? null : (string) $event->getResponse()->getBody(), "url" => !empty($event->getTransferInfo()['url']) ? $event->getTransferInfo()['url'] : $event->getRequest()->getUrl()];
if ($event instanceof ErrorEvent) {
$errData["message"] = $event->getException()->getMessage();
}
Logger::log("DEBUG", "Http request failed, retrying in {$delay}s", $errData);
// ms > s
return 1000 * $delay;
}]);
}
