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<?php
namespace Algolia\AlgoliaSearch\RetryStrategy;
use Algolia\AlgoliaSearch\Algolia;
use Algolia\AlgoliaSearch\Config\AbstractConfig;
use Algolia\AlgoliaSearch\Exceptions\AlgoliaException;
use Algolia\AlgoliaSearch\Exceptions\BadRequestException;
use Algolia\AlgoliaSearch\Exceptions\NotFoundException;
use Algolia\AlgoliaSearch\Exceptions\RetriableException;
use Algolia\AlgoliaSearch\Exceptions\UnreachableException;
use Algolia\AlgoliaSearch\Http\HttpClientInterface;
use Algolia\AlgoliaSearch\Http\Psr7\Request;
use Algolia\AlgoliaSearch\Http\Psr7\Uri;
use Algolia\AlgoliaSearch\RequestOptions\RequestOptions;
use Algolia\AlgoliaSearch\RequestOptions\RequestOptionsFactory;
use Algolia\AlgoliaSearch\Support\Helpers;
use Psr\Http\Message\RequestInterface;
use Psr\Http\Message\ResponseInterface;
use Psr\Http\Message\UriInterface;
use Psr\Log\LoggerInterface;
use Psr\Log\LogLevel;
final class ApiWrapper implements ApiWrapperInterface
{
/**
* @var HttpClientInterface
*/
private $http;
/**
* @var AbstractConfig
*/
private $config;
/**
* @var \Algolia\AlgoliaSearch\RetryStrategy\ClusterHosts
*/
private $clusterHosts;
/**
* @var RequestOptionsFactory
*/
private $requestOptionsFactory;
/**
* @var LoggerInterface
*/
private $logger;
/**
* @var int
*/
private $jsonOptions = 0;
public function __construct(
HttpClientInterface $http,
AbstractConfig $config,
ClusterHosts $clusterHosts,
RequestOptionsFactory $RqstOptsFactory = null,
LoggerInterface $logger = null
) {
$this->http = $http;
$this->config = $config;
$this->clusterHosts = $clusterHosts;
$this->requestOptionsFactory = $RqstOptsFactory ?: new RequestOptionsFactory($config);
$this->logger = $logger ?: Algolia::getLogger();
if (defined('JSON_UNESCAPED_UNICODE')) {
// `JSON_UNESCAPED_UNICODE` is introduced in PHP 5.4.0
$this->jsonOptions = JSON_UNESCAPED_UNICODE;
}
}
public function read($method, $path, $requestOptions = [], $defaultRequestOptions = [])
{
if ('GET' === strtoupper($method)) {
$requestOptions = $this->requestOptionsFactory->createBodyLess($requestOptions, $defaultRequestOptions);
} else {
$requestOptions = $this->requestOptionsFactory->create($requestOptions, $defaultRequestOptions);
}
return $this->request(
$method,
$path,
$requestOptions,
$this->clusterHosts->read(),
$requestOptions->getReadTimeout()
);
}
public function write($method, $path, $data = [], $requestOptions = [], $defaultRequestOptions = [])
{
if ('DELETE' === strtoupper($method)) {
$requestOptions = $this->requestOptionsFactory->createBodyLess($requestOptions, $defaultRequestOptions);
$data = [];
} else {
$requestOptions = $this->requestOptionsFactory->create($requestOptions, $defaultRequestOptions);
}
return $this->request(
$method,
$path,
$requestOptions,
$this->clusterHosts->write(),
$requestOptions->getWriteTimeout(),
$data
);
}
public function send($method, $path, $requestOptions = [], $hosts = null)
{
$requestOptions = $this->requestOptionsFactory->create($requestOptions);
if (null === $hosts) {
$hosts = $this->clusterHosts->write();
} elseif (!is_array($hosts)) {
$hosts = [$hosts];
}
return $this->request(
$method,
$path,
$requestOptions,
$hosts,
$requestOptions->getWriteTimeout()
);
}
private function request($method, $path, RequestOptions $requestOptions, $hosts, $timeout, $data = [])
{
$uri = $this->createUri($path)
->withQuery($requestOptions->getBuiltQueryParameters())
->withScheme('https');
$body = array_merge($data, $requestOptions->getBody());
$logParams = [
'body' => $body,
'headers' => $requestOptions->getHeaders(),
'method' => $method,
'query' => $requestOptions->getQueryParameters(),
];
$retry = 1;
foreach ($hosts as $host) {
$uri = $uri->withHost($host);
$request = null;
$logParams['retryNumber'] = $retry;
$logParams['host'] = (string) $uri;
try {
$request = $this->createRequest(
$method,
$uri,
$requestOptions->getHeaders(),
$body
);
$this->log(LogLevel::DEBUG, 'Sending request.', $logParams);
$response = $this->http->sendRequest(
$request,
$timeout * $retry,
$requestOptions->getConnectTimeout() * $retry
);
$responseBody = $this->handleResponse($response, $request);
$logParams['response'] = $responseBody;
$this->log(LogLevel::DEBUG, 'Response received.', $logParams);
return $responseBody;
} catch (RetriableException $e) {
$this->log(LogLevel::DEBUG, 'Host failed.', array_merge($logParams, [
'description' => $e->getMessage(),
]));
$this->clusterHosts->failed($host);
} catch (BadRequestException $e) {
unset($logParams['body'], $logParams['headers']);
$logParams['description'] = $e->getMessage();
$this->log(LogLevel::WARNING, 'Bad request.', $logParams);
throw $e;
} catch (\Exception $e) {
unset($logParams['body'], $logParams['headers']);
$logParams['description'] = $e->getMessage();
$this->log(LogLevel::ERROR, 'Generic error.', $logParams);
throw $e;
}
$retry++;
}
throw new UnreachableException();
}
private function handleResponse(ResponseInterface $response, RequestInterface $request)
{
$body = (string) $response->getBody();
$statusCode = $response->getStatusCode();
if (0 === $statusCode || ($statusCode >= 100 && $statusCode < 200) || $statusCode >= 500) {
$reason = $response->getReasonPhrase();
if (null === $response->getReasonPhrase() || '' === $response->getReasonPhrase()) {
$reason = $statusCode >= 500 ? 'Internal Server Error' : 'Unreachable Host';
}
throw new RetriableException('Retriable failure on '.$request->getUri()->getHost().': '.$reason, $statusCode);
}
$responseArray = Helpers::json_decode($body, true);
if (404 == $statusCode) {
throw new NotFoundException($responseArray['message'], $statusCode);
} elseif ($statusCode >= 400) {
throw new BadRequestException($responseArray['message'], $statusCode);
} elseif (2 != (int) ($statusCode / 100)) {
throw new AlgoliaException($statusCode.': '.$body, $statusCode);
}
return $responseArray;
}
private function createUri($uri)
{
if ($uri instanceof UriInterface) {
return $uri;
} elseif (is_string($uri)) {
return new Uri($uri);
}
throw new \InvalidArgumentException('URI must be a string or UriInterface');
}
private function createRequest(
$method,
$uri,
array $headers = [],
$body = null,
$protocolVersion = '1.1'
) {
if (is_array($body)) {
// Send an empty body instead of "[]" in case there are
// no content/params to send
if (empty($body)) {
$body = '';
} else {
$body = \json_encode($body, $this->jsonOptions);
if (JSON_ERROR_NONE !== json_last_error()) {
throw new \InvalidArgumentException('json_encode error: '.json_last_error_msg());
}
}
}
return new Request($method, $uri, $headers, $body, $protocolVersion);
}
/**
* @param string $level
* @param string $message
*/
private function log($level, $message, array $context = [])
{
$this->logger->log($level, 'Algolia API client: '.$message, $context);
}
}