private function tryDeserializeError($response, $errorClass)
{
$error = $this->serializer->deserialize($response['body'], $response['transfer_stats']);
if (is_array($error)) {
// 2.0 structured exceptions
if (isset($error['error']['reason'])) {
// Try to use root cause first (only grabs the first root cause)
$root = $error['error']['root_cause'];
if (isset($root) && isset($root[0])) {
$cause = $root[0]['reason'];
$type = $root[0]['type'];
} else {
$cause = $error['error']['reason'];
$type = $error['error']['type'];
}
$original = new $errorClass($response['body'], $response['status']);
return new $errorClass("{$type}: {$cause}", $response['status'], $original);
}
if (isset($error['error'])) {
// <2.0 semi-structured exceptions
$original = new $errorClass($response['body'], $response['status']);
return new $errorClass($error['error'], $response['status'], $original);
}
// <2.0 "i just blew up" nonstructured exception
// $error is an array but we don't know the format, reuse the response body instead
return new $errorClass($response['body'], $response['status']);
}
// <2.0 "i just blew up" nonstructured exception
return new $errorClass($error, $response['status']);
}
/**
* Perform a request to the Cluster
*
* @param string $method HTTP method to use
* @param string $uri HTTP URI to send request to
* @param null $params Optional query parameters
* @param null $body Optional query body
*
* @throws Common\Exceptions\NoNodesAvailableException|\Exception
* @internal param null $maxRetries Optional number of retries
*
* @return array
*/
public function performRequest($method, $uri, $params = null, $body = null)
{
try {
$connection = $this->getConnection();
} catch (Exceptions\NoNodesAvailableException $exception) {
$this->log->critical('No alive nodes found in cluster');
throw $exception;
}
$response = array();
$caughtException = null;
$this->lastConnection = $connection;
try {
if (isset($body) === true) {
$body = $this->serializer->serialize($body);
}
$response = $connection->performRequest($method, $uri, $params, $body);
$connection->markAlive();
$this->retryAttempts = 0;
$data = $this->serializer->deserialize($response['text'], $response['info']);
return array('status' => $response['status'], 'data' => $data, 'info' => $response['info']);
} catch (Exceptions\Curl\OperationTimeoutException $exception) {
$this->connectionPool->scheduleCheck();
$caughtException = $exception;
} catch (Exceptions\ClientErrorResponseException $exception) {
throw $exception;
//We need 4xx errors to go straight to the user, no retries
} catch (Exceptions\ServerErrorResponseException $exception) {
throw $exception;
//We need 5xx errors to go straight to the user, no retries
} catch (TransportException $exception) {
$connection->markDead();
$this->connectionPool->scheduleCheck();
$caughtException = $exception;
}
$shouldRetry = $this->shouldRetry($method, $uri, $params, $body);
if ($shouldRetry === true) {
return $this->performRequest($method, $uri, $params, $body);
}
if ($caughtException !== null) {
throw $caughtException;
}
return $response;
}
private function wrapHandler(callable $handler, LoggerInterface $logger, LoggerInterface $tracer)
{
return function (array $request, Connection $connection, Transport $transport = null, $options) use($handler, $logger, $tracer) {
// Send the request using the wrapped handler.
$response = Core::proxy($handler($request), function ($response) use($connection, $transport, $logger, $tracer, $request, $options) {
if (isset($response['error']) === true) {
if ($response['error'] instanceof ConnectException || $response['error'] instanceof RingException) {
$connection->markDead();
$transport->connectionPool->scheduleCheck();
$neverRetry = isset($request['client']['never_retry']) ? $request['client']['never_retry'] : false;
$shouldRetry = $transport->shouldRetry($request);
if ($shouldRetry && !$neverRetry) {
return $transport->performRequest($request['http_method'], $request['uri'], [], $request['body'], $options);
}
// Due to the magic of futures, this will only be invoked if the final retry fails, since
// successful resolutions will go down the alternate `else` path the second time through
// the proxy
$this->throwCurlException($request, $response);
} else {
// Something went seriously wrong, bail
throw new TransportException($response['error']->getMessage());
}
} else {
$connection->markAlive();
if (isset($response['body']) === true) {
$response['body'] = stream_get_contents($response['body']);
}
if ($response['status'] >= 400 && $response['status'] < 500) {
$ignore = isset($request['client']['ignore']) ? $request['client']['ignore'] : [];
$this->process4xxError($request, $response, $ignore);
} elseif ($response['status'] >= 500) {
$ignore = isset($request['client']['ignore']) ? $request['client']['ignore'] : [];
$this->process5xxError($request, $response, $ignore);
}
// No error, deserialize
$response['body'] = $this->serializer->deserialize($response['body'], $response['transfer_stats']);
}
$this->logRequestSuccess($request['http_method'], $response['effective_url'], $request['body'], $request['headers'], $response['status'], $response['body'], $response['transfer_stats']['total_time']);
return isset($request['client']['verbose']) && $request['client']['verbose'] === true ? $response : $response['body'];
});
return $response;
};
}
private function tryDeserializeError($response)
{
$error = $this->serializer->deserialize($response['body'], $response['transfer_stats']);
if (is_array($error) === true) {
// 2.0 structured exceptions
if (isset($error['error']['reason']) === true) {
$original = new ServerErrorResponseException($response['body'], $response['status']);
$cause = $error['error']['reason'];
$type = $error['error']['type'];
return new ServerErrorResponseException("{$type}: {$cause}", $response['status'], $original);
} elseif (isset($error['error']) === true) {
// <2.0 semi-structured exceptions
$original = new ServerErrorResponseException($response['body'], $response['status']);
return new ServerErrorResponseException($error['error'], $response['status'], $original);
}
// <2.0 "i just blew up" nonstructured exception
// $error is an array but we don't know the format, reuse the response body instead
return new ServerErrorResponseException($response['body'], $response['status']);
}
// <2.0 "i just blew up" nonstructured exception
return new ServerErrorResponseException($error, $response['status']);
}