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<?php |
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namespace Mediawiki\Api\Guzzle; |
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use GuzzleHttp\Exception\ConnectException; |
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use GuzzleHttp\Exception\RequestException; |
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use GuzzleHttp\Middleware; |
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use GuzzleHttp\Psr7\Request; |
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use GuzzleHttp\Psr7\Response; |
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use Psr\Log\LoggerAwareInterface; |
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use Psr\Log\LoggerInterface; |
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use Psr\Log\NullLogger; |
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/** |
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* @access private |
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* |
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* @author Addshore |
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*/ |
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class MiddlewareFactory implements LoggerAwareInterface { |
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/** |
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* @var LoggerInterface |
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*/ |
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private $logger; |
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public function __construct() { |
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$this->logger = new NullLogger(); |
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} |
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public function setLogger( LoggerInterface $logger ) { |
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$this->logger = $logger; |
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} |
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/** |
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* @return callable |
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*/ |
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public function retry() { |
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return Middleware::retry( $this->newRetryDecider() ); |
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} |
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/** |
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* @return callable |
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*/ |
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private function newRetryDecider() { |
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return function ( |
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$retries, |
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Request $request, |
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Response $response = null, |
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RequestException $exception = null |
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) { |
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// Don't retry if we have run out of retries |
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if ( $retries >= 5 ) { |
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return false; |
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} |
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$shouldRetry = false; |
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// Retry connection exceptions |
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if( $exception instanceof ConnectException ) { |
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$shouldRetry = true; |
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} |
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if( $response ) { |
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$headers = $response->getHeaders(); |
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// Retry on server errors |
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if( $response->getStatusCode() >= 500 ) { |
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$shouldRetry = true; |
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} |
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// Retry if we have a response with an API error worth retrying |
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if ( array_key_exists( 'mediawiki-api-error', $headers ) ) { |
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foreach( $headers['mediawiki-api-error'] as $mediawikiApiErrorHeader ) { |
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if ( in_array( |
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$mediawikiApiErrorHeader, |
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array( |
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'ratelimited', |
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'readonly', |
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'internal_api_error_DBQueryError', |
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) |
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) ) { |
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$shouldRetry = true; |
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} |
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} |
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} |
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} |
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// Log if we are retrying |
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if( $shouldRetry ) { |
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$this->logger->warning( |
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sprintf( |
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'Retrying %s %s %s/5, %s', |
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$request->getMethod(), |
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$request->getUri(), |
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$retries + 1, |
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$response ? 'status code: ' . $response->getStatusCode() : |
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$exception->getMessage() |
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) |
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); |
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} |
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return $shouldRetry; |
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}; |
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} |
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} |
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addwiki /
mediawiki-api-base
If a variable is not always an object, we recommend to add an additional type check to ensure your method call is safe: