<?php
namespace Guzzle\Plugin\Backoff;
use Guzzle\Http\Message\RequestInterface;
use Guzzle\Http\Message\Response;
use Guzzle\Http\Exception\HttpException;
/**
* Implements an exponential backoff retry strategy.
*
* Warning: If no decision making strategies precede this strategy in the the chain, then all requests will be retried
*/
class ExponentialBackoffStrategy extends AbstractBackoffStrategy
{
public function makesDecision()
{
return false;
}
protected function getDelay($retries, RequestInterface $request, Response $response = null, HttpException $e = null)
{
return (int) pow(2, $retries);
}
}