<?php
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namespace JVBase\managers\queue;
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use wpdb;
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if (!defined('ABSPATH')) {
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exit;
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}
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class Locker
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{
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private string $lockKey;
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private int $timeout;
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protected wpdb $wpdb;
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private ?string $token = null;
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public function __construct(string $key = 'queue', int $timeout = 0)
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{
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$this->lockKey = BASE . $key . '_lock';
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$this->timeout = $timeout;
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global $wpdb;
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$this->wpdb = $wpdb;
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}
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/**
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* Execute callback with lock, auto-release after
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*/
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public function withLock(callable $callback): void
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{
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$acquired = $this->wpdb->get_var(
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$this->wpdb->prepare(
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'SELECT GET_LOCK(%s, %d)',
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$this->lockKey,
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$this->timeout
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)
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);
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if ((int) $acquired !== 1) {
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// Lock already held — just exit quietly
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return;
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}
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try {
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$callback();
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} finally {
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$this->wpdb->get_var(
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$this->wpdb->prepare(
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'SELECT RELEASE_LOCK(%s)',
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$this->lockKey
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)
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);
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}
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}
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}
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