Kadet\Xmpp\Utils\DnsResolver

Complexity

Total Complexity

8

Size/Duplication

Total Lines	49
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	0

Test Coverage

Coverage

90%

Importance

Changes

0

3 Methods

Rating	Name	Duplication	Size	Complexity
A	__construct()	0	5	1
A	getIterator()	0	6	1
B	resolve()	0	21	6

<?php
/**
 * Nucleus - XMPP Library for PHP
 *
 * Copyright (C) 2016, Some rights reserved.
 *
 * @author Kacper "Kadet" Donat <kacper@kadet.net>
 *
 * Contact with author:
 * Xmpp: me@kadet.net
 * E-mail: contact@kadet.net
 *
 * From Kadet with love.
 */

namespace Kadet\Xmpp\Utils;

use Traversable;

class DnsResolver implements \IteratorAggregate
{
    private $_results;
    private $_port;
    private $_pool;

    public function __construct(array $pool, int $port)
    {
        $this->_pool = $pool;
        $this->_port = $port;
    }

    /**
     * Retrieve an external iterator
     *
     * @link  http://php.net/manual/en/iteratoraggregate.getiterator.php
     * @return Traversable An instance of an object implementing <b>Iterator</b> or
     *        <b>Traversable</b>
     * @since 5.0.0
     */
    public function getIterator()
    {
        $this->resolve();

        return new \ArrayIterator($this->_results);
    }

    public function resolve(bool $force = false) : bool
    {
        if (!$force && is_array($this->_results)) {
            return true;
        }

        $this->_results = [];
        foreach ($this->_pool as $address => $type) {
            if (!($result = dns_get_record($address, $type))) {
                continue;
            }

            $this->_results = array_merge($this->_results, array_map(function ($record) use($type) {
                return $type === DNS_SRV
                    ? [$record['target'], $record['port']]
                    : [$record['ip'], $this->_port];
            }, $result));
        }

        return true;
    }
}