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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]); } }