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<?php
/**
* Piwik - Open source web analytics
*
* @link http://piwik.org
* @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
*
* @category Piwik
* @package Piwik
*/
/**
* The Piwik_ScheduledTime abstract class is used as a base class for different types of scheduling intervals.
* Piwik_ScheduledTime subclasses are used to schedule tasks within Piwik.
*
* @see Piwik_ScheduledTask
* @package Piwik
* @subpackage Piwik_ScheduledTime
*/
abstract class Piwik_ScheduledTime
{
const PERIOD_NEVER = 'never';
const PERIOD_DAY = 'day';
const PERIOD_WEEK = 'week';
const PERIOD_MONTH = 'month';
/**
* @link http://php.net/manual/en/function.date.php, format string : 'G'
* Defaults to midnight
* @var integer
*/
public $hour = 0;
/**
* For weekly scheduling : http://php.net/manual/en/function.date.php, format string : 'N', defaults to Monday
* For monthly scheduling : day of the month (1 to 31) (note: will be capped at the latest day available the
* month), defaults to first day of the month
* @var integer
*/
public $day = 1;
static public function getScheduledTimeForPeriod($period)
{
switch($period)
{
case self::PERIOD_MONTH: return new Piwik_ScheduledTime_Monthly();
case self::PERIOD_WEEK: return new Piwik_ScheduledTime_Weekly();
case self::PERIOD_DAY: return new Piwik_ScheduledTime_Daily();
default: throw new Exception('period ' . $period . 'is undefined.');
}
}
/**
* Returns the system time used by subclasses to compute schedulings.
* This method has been introduced so unit tests can override the current system time.
* @return int
*/
protected function getTime()
{
return time();
}
/**
* Computes the next scheduled time based on the system time at which the method has been called and
* the underlying scheduling interval.
*
* @abstract
* @return integer Returns the rescheduled time measured in the number of seconds since the Unix Epoch
*/
abstract public function getRescheduledTime();
/**
* @abstract
* @param int $_day the day to set
* @throws Exception if method not supported by subclass or parameter _day is invalid
*/
abstract public function setDay($_day);
/**
* @param int $_hour the hour to set, has to be >= 0 and < 24
* @throws Exception if method not supported by subclass or parameter _hour is invalid
*/
public function setHour($_hour)
{
if (!($_hour >=0 && $_hour < 24))
{
throw new Exception ("Invalid hour parameter, must be >=0 and < 24");
}
$this->hour = $_hour;
}
/**
* Computes the delta in seconds needed to adjust the rescheduled time to the required hour.
*
* @param int $rescheduledTime The rescheduled time to be adjusted
* @return int adjusted rescheduled time
*/
protected function adjustHour ($rescheduledTime)
{
if ( $this->hour !== null )
{
// Reset the number of minutes and set the scheduled hour to the one specified with setHour()
$rescheduledTime = mktime ( $this->hour,
0,
date('s', $rescheduledTime),
date('n', $rescheduledTime),
date('j', $rescheduledTime),
date('Y', $rescheduledTime)
);
}
return $rescheduledTime;
}
}
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