Async/src/FuzeWorks/Async/Handler.php

106 lines
3.1 KiB
PHP

<?php
/**
* FuzeWorks Async Library
*
* The FuzeWorks PHP FrameWork
*
* Copyright (C) 2013-2020 TechFuze
*
* 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.
*
* @author TechFuze
* @copyright Copyright (c) 2013 - 2020, TechFuze. (http://techfuze.net)
* @license https://opensource.org/licenses/MIT MIT License
*
* @link http://techfuze.net/fuzeworks
* @since Version 1.0.0
*
* @version Version 1.0.0
*/
namespace FuzeWorks\Async;
interface Handler
{
/**
* Gets invoked upon being added to the Task
*
* @param Task $task
* @return mixed
* @throws TasksException
*/
public function init(Task $task);
/**
* Retrieve the parent handler that will first handle this task, before this child Handler
*
* @return Handler|null
*/
public function getParentHandler(): ?Handler;
/**
* Set the parent handler that will fire before this Handler
*
* @param Handler $parentHandler
*/
public function setParentHandler(Handler $parentHandler): void;
/**
* Import the parent output into the child
*
* @param string $input
*/
public function setParentInput(string $input): void;
/**
* The handler method used to handle this task.
* This handler will execute the actual task.
*
* Should return true when successful. Return false when failed.
*
* @param Task $task
* @return bool
*/
public function primaryHandler(Task $task): bool;
/**
* Any output generated by primaryHandler should be returned here.
*
* @return string
*/
public function getOutput(): string;
/**
* The handler method used after the primaryHandler if so requested
*
* The task will instruct the supervisor whether the postHandler is to be called.
*
* Remember: postHandler is called in a new process. Data is not shared between processes unless done manually.
* @param Task $task
*/
public function postHandler(Task $task);
/**
* Any output generated by postHandler should be returned here
*
* @return string
*/
public function getPostOutput(): string;
}