282 lines
7.6 KiB
PHP
282 lines
7.6 KiB
PHP
<?php
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namespace TYPO3\CMS\Scheduler;
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/*
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* This file is part of the TYPO3 CMS project.
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*
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* It is free software; you can redistribute it and/or modify it under
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* the terms of the GNU General Public License, either version 2
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* of the License, or any later version.
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*
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* For the full copyright and license information, please read the
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* LICENSE.txt file that was distributed with this source code.
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*
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* The TYPO3 project - inspiring people to share!
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*/
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/**
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* This class manages the logic of a particular execution of a task
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* @internal
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*/
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class Execution
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{
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/**
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* Start date of a task (timestamp)
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*
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* @var int
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*/
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protected $start;
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/**
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* End date of a task (timestamp)
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*
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* @var int
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*/
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protected $end;
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/**
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* Interval between executions (in seconds)
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*
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* @var int
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*/
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protected $interval;
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/**
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* Flag for concurrent executions: TRUE if allowed, FALSE otherwise (default)
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*
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* @var bool
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*/
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protected $multiple = false;
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/**
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* The cron command string of this task,
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*
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* @var string
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*/
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protected $cronCmd;
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/**
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* This flag is used to mark a new single execution
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* See explanations in method setIsNewSingleExecution()
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*
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* @var bool
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* @see \TYPO3\CMS\Scheduler\Execution::setIsNewSingleExecution()
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*/
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protected $isNewSingleExecution = false;
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/**********************************
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* Setters and getters
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**********************************/
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/**
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* This method is used to set the start date
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*
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* @param int $start Start date (timestamp)
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*/
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public function setStart($start)
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{
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$this->start = $start;
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}
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/**
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* This method is used to get the start date
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*
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* @return int Start date (timestamp)
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*/
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public function getStart()
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{
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return $this->start;
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}
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/**
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* This method is used to set the end date
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*
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* @param int $end End date (timestamp)
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*/
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public function setEnd($end)
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{
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$this->end = $end;
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}
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/**
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* This method is used to get the end date
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*
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* @return int End date (timestamp)
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*/
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public function getEnd()
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{
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return $this->end;
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}
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/**
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* This method is used to set the interval
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*
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* @param int $interval Interval (in seconds)
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*/
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public function setInterval($interval)
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{
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$this->interval = $interval;
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}
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/**
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* This method is used to get the interval
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*
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* @return int Interval (in seconds)
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*/
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public function getInterval()
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{
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return $this->interval;
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}
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/**
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* This method is used to set the multiple execution flag
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*
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* @param bool $multiple TRUE if concurrent executions are allowed, FALSE otherwise
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*/
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public function setMultiple($multiple)
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{
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$this->multiple = $multiple;
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}
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/**
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* This method is used to get the multiple execution flag
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*
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* @return bool TRUE if concurrent executions are allowed, FALSE otherwise
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*/
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public function getMultiple()
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{
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return $this->multiple;
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}
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/**
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* Set the value of the cron command
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*
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* @param string $cmd Cron command, using cron-like syntax
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*/
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public function setCronCmd($cmd)
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{
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$this->cronCmd = $cmd;
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}
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/**
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* Get the value of the cron command
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*
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* @return string Cron command, using cron-like syntax
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*/
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public function getCronCmd()
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{
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return $this->cronCmd;
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}
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/**
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* Set whether this is a newly created single execution.
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* This is necessary for the following reason: if a new single-running task
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* is created and its start date is in the past (even for only a few seconds),
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* the next run time calculation (which happens upon saving) will disable
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* that task, because it was meant to run only once and is in the past.
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* Setting this flag to TRUE preserves this task for a single run.
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* Upon next execution, this flag is set to FALSE.
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*
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* @param bool $isNewSingleExecution Is newly created single execution?
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* @see \TYPO3\CMS\Scheduler\Execution::getNextExecution()
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*/
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public function setIsNewSingleExecution($isNewSingleExecution)
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{
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$this->isNewSingleExecution = $isNewSingleExecution;
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}
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/**
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* Get whether this is a newly created single execution
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*
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* @return bool Is newly created single execution?
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*/
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public function getIsNewSingleExecution()
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{
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return $this->isNewSingleExecution;
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}
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/**********************************
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* Execution calculations and logic
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**********************************/
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/**
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* This method gets or calculates the next execution date
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*
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* @return int Timestamp of the next execution
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* @throws \OutOfBoundsException
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*/
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public function getNextExecution()
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{
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if ($this->getIsNewSingleExecution()) {
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$this->setIsNewSingleExecution(false);
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return $this->start;
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}
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if (!$this->isEnded()) {
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// If the schedule has not yet run out, find out the next date
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if (!$this->isStarted()) {
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// If the schedule hasn't started yet, next date is start date
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$date = $this->start;
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} else {
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// If the schedule has already started, calculate next date
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if ($this->cronCmd) {
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// If it uses cron-like syntax, calculate next date
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$date = $this->getNextCronExecution();
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} elseif ($this->interval == 0) {
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// If not and there's no interval either, it's a singe execution: use start date
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$date = $this->start;
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} else {
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// Otherwise calculate date based on interval
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$now = time();
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$date = $now + $this->interval - ($now - $this->start) % $this->interval;
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}
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// If date is in the future, throw an exception
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if (!empty($this->end) && $date > $this->end) {
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throw new \OutOfBoundsException('Next execution date is past end date.', 1250715528);
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}
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}
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} else {
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// The event has ended, throw an exception
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throw new \OutOfBoundsException('Task is past end date.', 1250715544);
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}
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return $date;
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}
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/**
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* Calculates the next execution from a cron command
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*
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* @return int Next execution (timestamp)
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*/
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public function getNextCronExecution()
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{
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/** @var \TYPO3\CMS\Scheduler\CronCommand\CronCommand $cronCmd */
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$cronCmd = \TYPO3\CMS\Core\Utility\GeneralUtility::makeInstance(\TYPO3\CMS\Scheduler\CronCommand\CronCommand::class, $this->getCronCmd());
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$cronCmd->calculateNextValue();
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return $cronCmd->getTimestamp();
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}
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/**
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* Checks if the schedule for a task is started or not
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*
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* @return bool TRUE if the schedule is already active, FALSE otherwise
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*/
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public function isStarted()
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{
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return $this->start < time();
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}
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/**
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* Checks if the schedule for a task is passed or not
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*
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* @return bool TRUE if the schedule is not active anymore, FALSE otherwise
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*/
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public function isEnded()
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{
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if (empty($this->end)) {
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// If no end is defined, the schedule never ends
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$result = false;
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} else {
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// Otherwise check if end is in the past
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$result = $this->end < time();
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}
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return $result;
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}
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}
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