Mezzle/queuejitsu-scheduler

<?php
/*
 * Copyright (c) 2017 - 2020 Martin Meredith
 * Copyright (c) 2017 Stickee Technology Limited
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

declare(strict_types=1);

namespace QueueJitsu\Scheduler\Adapter;

use QueueJitsu\Job\Job;

/**
 * Interface AdapterInterface
 *
 * @package QueueJitsu\Scheduler\Adapter
 */
interface AdapterInterface
{
    /**
     * getNextJob
     *
     * @return null|Job
     */
    public function getNextJob(): ?Job;

    /**
     * enqueueAt
     *
     * @param int $at
     * @param \QueueJitsu\Job\Job $job
     */
    public function enqueueAt(int $at, Job $job): void;

    /**
     * enqueueCron
     *
     * @param string $cron
     * @param \QueueJitsu\Job\Job $job
     *
     * @throws \RuntimeException
     */
    public function enqueueCron(string $cron, Job $job): void;
}