Hogosha\Monitor\Middleware\Backoff

Complexity

Total Complexity

6

Size/Duplication

Total Lines	48
Duplicated Lines	0 %

Coupling/Cohesion

Components	0
Dependencies	1

Importance

Changes	1
Bugs	0	Features	1

2 Methods

Rating	Name	Duplication	Size	Complexity
B	decider()	0	28	5
A	delay()	0	6	1

<?php

/*
 * This file is part of the hogosha-monitor package
 *
 * Copyright (c) 2016 Guillaume Cavana
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 *
 * Feel free to edit as you please, and have fun.
 *
 * @author Guillaume Cavana <guillaume.cavana@gmail.com>
 */

namespace Hogosha\Monitor\Middleware;

use GuzzleHttp\Exception\ConnectException;
use GuzzleHttp\Exception\RequestException;
use GuzzleHttp\Psr7\Request;
use GuzzleHttp\Psr7\Response;

/**
 * Class Backoff.
 */
class Backoff
{
    /**
     * decider.
     *
     * @return callable
     */
    public static function decider()
    {
        return function (
            $retries,
            Request $request,
            Response $response = null,
            RequestException $exception = null
        ) {
            // Limit to 5 retry max
            if ($retries >= 3) {
                return false;
            }

            // Retry connection exceptions
            if ($exception instanceof ConnectException) {
                return true;
            }

            if ($response) {
                // Retry if we have a serve error
                if ($response->getStatusCode() >= 500) {
                    return true;
                }
            }

            return false;
        };
    }

    /**
     * delay.
     *
     * @return callable
     */
    public static function delay()
    {
        return function ($numberOfRetries) {
            return 1000 * $numberOfRetries;
        };
    }
}