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<?php namespace Indatus\Dispatcher\Drivers\DateTime; |
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/** |
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* This class is responsible for parsing the expression syntax |
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* Dispatcher uses for scheduling. |
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* |
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* @copyright 2014 Indatus |
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* @package Indatus\Dispatcher\Drivers\PHP |
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*/ |
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use App; |
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use Carbon\Carbon; |
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use Cron\CronExpression; |
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class ScheduleInterpreter |
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{ |
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/** @var Carbon */ |
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protected $now; |
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/** @var Scheduler */ |
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protected $scheduler; |
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protected $month = null; |
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protected $week = null; |
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protected $dayOfMonth = null; |
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protected $dayOfWeek = null; |
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protected $hour = null; |
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protected $minute = null; |
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public function __construct(Scheduler $scheduler, Carbon $now) |
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{ |
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$this->now = $now; |
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$this->scheduler = $scheduler; |
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} |
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/** |
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* Determine if the current schedule is due to be run |
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* |
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* @return bool |
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*/ |
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public function isDue() |
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{ |
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$cron = App::make('Cron\CronExpression', [$this->scheduler->getCronSchedule()]); |
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// if a week is defined, so some special weekly stuff |
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if ($this->scheduler->getScheduleWeek() !== Scheduler::NONE) { |
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return $this->thisWeek() && $cron->isDue(); |
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} |
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//otherwise us only standard cron scheduling |
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return $cron->isDue(); |
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} |
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/** |
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* Determine if the provided expression refers to this week |
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* |
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* @return bool |
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*/ |
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public function thisWeek() |
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{ |
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$scheduleWeek = $this->scheduler->getScheduleWeek(); |
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$currentWeek = $this->now->format('W'); |
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//if a month is defined, week refers to the week of the month |
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$scheduleMonth = $this->scheduler->getScheduleMonth(); |
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if (!is_null($scheduleMonth) && $scheduleMonth !== Scheduler::NONE) { |
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return $this->isCurrent($scheduleWeek, $this->now->weekOfMonth); |
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} |
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//if it's an odd or even week |
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if ($scheduleWeek == 'odd' && $currentWeek & 1) { |
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return true; |
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} elseif ($scheduleWeek == 'even' && !($currentWeek & 1)) { |
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return true; |
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} |
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return $this->isCurrent($scheduleWeek, $this->now->weekOfYear); |
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} |
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/** |
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* This method checks syntax for all scheduling components. |
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* |
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* - If there's a direct match |
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* - If it's an ANY match |
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* - If the expression exists in the series |
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* |
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* @param string $expression The expression to compare |
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* @param string $current The current value to compare against |
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* |
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* @return bool |
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*/ |
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protected function isCurrent($expression, $current) |
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{ |
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// if it's any |
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if ($expression == Scheduler::ANY) { |
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return true; |
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} |
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// if this is in a series |
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if (is_array($expression)) { |
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return in_array($current, $expression); |
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} |
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// if there's a direct match |
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if ((string) $expression === (string) $current) { |
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return true; |
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} |
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return false; |
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} |
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} |
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Indatus /
dispatcher
