تأسست على رؤية مُختلفة، تهدف إلى تقديم تجربة فريدة من نوعها في الأثاث المكتبي والفندقي لكي نضمن بيئة عمل توفر مساحات عمل مريحة وصحية، حيث نمتاز بخبراتنا الواسعة فأصبحت أحد أفضل المؤسسات الوطنية الرائدة في تجارة وصناعة الأثاث والتصميم الداخلي والسبّاقة على مستوى المملكة في المفروشات المكتبية والفندقية والمنزلية، نهدف الى خلق قيمة لعملائنا عن طريق توفير الجودة العالية في مقابل السعر المناسب.
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<?php
/**
* Semaphore Lock Management
* Adapted from WP Social under the GPL - thanks to Alex King (https://github.com/crowdfavorite/wp-social)
*/
class UpdraftPlus_Semaphore {
/**
* Initializes the semaphore object.
*
* @static
* @return UpdraftPlus_Semaphore
*/
public static function factory() {
return new self;
}
/**
* Lock Broke
*
* @var boolean
*/
protected $lock_broke = false;
public $lock_name = 'lock';
/**
* Attempts to start the lock. If the rename works, the lock is started.
*
* @return bool
*/
public function lock() {
global $wpdb, $updraftplus;
// Attempt to set the lock
$affected = $wpdb->query("
UPDATE $wpdb->options
SET option_name = 'updraftplus_locked_".$this->lock_name."'
WHERE option_name = 'updraftplus_unlocked_".$this->lock_name."'
");
if ('0' == $affected && !$this->stuck_check()) {
$updraftplus->log('Semaphore lock ('.$this->lock_name.', '.$wpdb->options.') failed (line '.__LINE__.')');
return false;
}
// Check to see if all processes are complete
$affected = $wpdb->query("
UPDATE $wpdb->options
SET option_value = CAST(option_value AS UNSIGNED) + 1
WHERE option_name = 'updraftplus_semaphore_".$this->lock_name."'
AND option_value = '0'
");
if ('1' != $affected) {
if (!$this->stuck_check()) {
$updraftplus->log('Semaphore lock ('.$this->lock_name.', '.$wpdb->options.') failed (line '.__LINE__.')');
return false;
}
// Reset the semaphore to 1
$wpdb->query("
UPDATE $wpdb->options
SET option_value = '1'
WHERE option_name = 'updraftplus_semaphore_".$this->lock_name."'
");
$updraftplus->log('Semaphore ('.$this->lock_name.', '.$wpdb->options.') reset to 1');
}
// Set the lock time
$wpdb->query($wpdb->prepare("
UPDATE $wpdb->options
SET option_value = %s
WHERE option_name = 'updraftplus_last_lock_time_".$this->lock_name."'
", current_time('mysql', 1)));
$updraftplus->log('Set semaphore last lock ('.$this->lock_name.') time to '.current_time('mysql', 1));
$updraftplus->log('Semaphore lock ('.$this->lock_name.') complete');
return true;
}
public static function ensure_semaphore_exists($semaphore) {
// Make sure the options for semaphores exist
global $wpdb, $updraftplus;
$results = $wpdb->get_results("
SELECT option_id
FROM $wpdb->options
WHERE option_name IN ('updraftplus_locked_$semaphore', 'updraftplus_unlocked_$semaphore', 'updraftplus_last_lock_time_$semaphore', 'updraftplus_semaphore_$semaphore')
");
if (!is_array($results) || count($results) < 3) {
if (is_array($results) && count($results) > 0) {
$updraftplus->log("Semaphore ($semaphore, ".$wpdb->options.") in an impossible/broken state - fixing (".count($results).")");
} else {
$updraftplus->log("Semaphore ($semaphore, ".$wpdb->options.") being initialised");
}
$wpdb->query("
DELETE FROM $wpdb->options
WHERE option_name IN ('updraftplus_locked_$semaphore', 'updraftplus_unlocked_$semaphore', 'updraftplus_last_lock_time_$semaphore', 'updraftplus_semaphore_$semaphore')
");
$wpdb->query($wpdb->prepare("
INSERT INTO $wpdb->options (option_name, option_value, autoload)
VALUES
('updraftplus_unlocked_$semaphore', '1', 'no'),
('updraftplus_last_lock_time_$semaphore', '%s', 'no'),
('updraftplus_semaphore_$semaphore', '0', 'no')
", current_time('mysql', 1)));
}
}
/**
* Increment the semaphore.
*
* @param array $filters
* @return Updraft_Semaphore
*/
public function increment(array $filters = array()) {
global $wpdb, $updraftplus;
if (count($filters)) {
// Loop through all of the filters and increment the semaphore
foreach ($filters as $priority) {
for ($i = 0, $j = count($priority); $i < $j; ++$i) {
$this->increment();
}
}
} else {
$wpdb->query("
UPDATE $wpdb->options
SET option_value = CAST(option_value AS UNSIGNED) + 1
WHERE option_name = 'updraftplus_semaphore_".$this->lock_name."'
");
$updraftplus->log('Incremented the semaphore ('.$this->lock_name.') by 1');
}
return $this;
}
/**
* Decrements the semaphore.
*
* @return void
*/
public function decrement() {
global $wpdb, $updraftplus;
$wpdb->query("
UPDATE $wpdb->options
SET option_value = CAST(option_value AS UNSIGNED) - 1
WHERE option_name = 'updraftplus_semaphore_".$this->lock_name."'
AND CAST(option_value AS UNSIGNED) > 0
");
$updraftplus->log('Decremented the semaphore ('.$this->lock_name.') by 1');
}
/**
* Unlocks the process.
*
* @return bool
*/
public function unlock() {
global $wpdb, $updraftplus;
// Decrement for the master process.
$this->decrement();
$result = $wpdb->query("
UPDATE $wpdb->options
SET option_name = 'updraftplus_unlocked_".$this->lock_name."'
WHERE option_name = 'updraftplus_locked_".$this->lock_name."'
");
if ('1' == $result) {
$updraftplus->log('Semaphore ('.$this->lock_name.') unlocked');
return true;
}
$updraftplus->log('Semaphore ('.$this->lock_name.', '.$wpdb->options.') still locked ('.$result.')');
return false;
}
/**
* Attempts to jiggle the stuck lock loose.
*
* @return bool
*/
private function stuck_check() {
global $wpdb, $updraftplus;
// Check to see if we already broke the lock.
if ($this->lock_broke) {
return true;
}
$current_time = current_time('mysql', 1);
$three_minutes_before = gmdate('Y-m-d H:i:s', time()-(defined('UPDRAFTPLUS_SEMAPHORE_LOCK_WAIT') ? UPDRAFTPLUS_SEMAPHORE_LOCK_WAIT : 180));
$affected = $wpdb->query($wpdb->prepare("
UPDATE $wpdb->options
SET option_value = %s
WHERE option_name = 'updraftplus_last_lock_time_".$this->lock_name."'
AND option_value <= %s
", $current_time, $three_minutes_before));
if ('1' == $affected) {
$updraftplus->log('Semaphore ('.$this->lock_name.', '.$wpdb->options.') was stuck, set lock time to '.$current_time);
$this->lock_broke = true;
return true;
}
// Check if lock is greater that 24 hours
$last_lock_time = strtotime(UpdraftPlus_Options::get_updraft_option('updraftplus_last_lock_time_'.$this->lock_name, $current_time));
$next_day = strtotime($current_time.' +1 day');
if ($last_lock_time > $next_day) {
$this->lock_broke = true;
return true;
}
return false;
}
} // End UpdraftPlus_Semaphore
