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<?php
namespace Illuminate\Cache;
use Illuminate\Support\Carbon;
class ArrayLock extends Lock
{
/**
* The parent array cache store.
*
* @var \Illuminate\Cache\ArrayStore
*/
protected $store;
/**
* Create a new lock instance.
*
* @param \Illuminate\Cache\ArrayStore $store
* @param string $name
* @param int $seconds
* @param string|null $owner
* @return void
*/
public function __construct($store, $name, $seconds, $owner = null)
{
parent::__construct($name, $seconds, $owner);
$this->store = $store;
}
/**
* Attempt to acquire the lock.
*
* @return bool
*/
public function acquire()
{
$expiration = $this->store->locks[$this->name]['expiresAt'] ?? Carbon::now()->addSecond();
if ($this->exists() && $expiration->isFuture()) {
return false;
}
$this->store->locks[$this->name] = [
'owner' => $this->owner,
'expiresAt' => $this->seconds === 0 ? null : Carbon::now()->addSeconds($this->seconds),
];
return true;
}
/**
* Determine if the current lock exists.
*
* @return bool
*/
protected function exists()
{
return isset($this->store->locks[$this->name]);
}
/**
* Release the lock.
*
* @return bool
*/
public function release()
{
if (! $this->exists()) {
return false;
}
if (! $this->isOwnedByCurrentProcess()) {
return false;
}
$this->forceRelease();
return true;
}
/**
* Returns the owner value written into the driver for this lock.
*
* @return string
*/
protected function getCurrentOwner()
{
return $this->store->locks[$this->name]['owner'];
}
/**
* Releases this lock in disregard of ownership.
*
* @return void
*/
public function forceRelease()
{
unset($this->store->locks[$this->name]);
}
}