GpsLab\Component\Command\Queue\Subscribe\ExecutingSubscribeCommandQueue

Complexity

Total Complexity

5

Size/Duplication

Total Lines	54
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	0

Test Coverage

Coverage

100%

Importance

Changes

0

3 Methods

Rating	Name	Duplication	Size	Complexity
A	publish()	0	9	2
A	subscribe()	0	4	1
A	unsubscribe()	0	12	2

<?php
declare(strict_types=1);

/**
 * GpsLab component.
 *
 * @author    Peter Gribanov <info@peter-gribanov.ru>
 * @copyright Copyright (c) 2011, Peter Gribanov
 * @license   http://opensource.org/licenses/MIT
 */

namespace GpsLab\Component\Command\Queue\Subscribe;

use GpsLab\Component\Command\Command;

class ExecutingSubscribeCommandQueue implements SubscribeCommandQueue
{
    /**
     * @var callable[]
     */
    private $handlers = [];

    /**
     * Publish command to queue.
     *
     * @param Command $command
     *
     * @return bool
     */
    public function publish(Command $command): bool
    {
        // absence of a handlers is not a error
        foreach ($this->handlers as $handler) {
            $handler($command);
        }

        return true;
    }

    /**
     * Subscribe on command queue.
     *
     * @param callable $handler
     */
    public function subscribe(callable $handler): void
    {
        $this->handlers[] = $handler;
    }

    /**
     * Unsubscribe on command queue.
     *
     * @param callable $handler
     *
     * @return bool
     */
    public function unsubscribe(callable $handler): bool
    {
        $index = array_search($handler, $this->handlers);

        if (false === $index) {
            return false;
        }

        unset($this->handlers[$index]);

        return true;
    }
}