65 lines
1.5 KiB
PHP
65 lines
1.5 KiB
PHP
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<?php
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declare(strict_types=1);
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namespace app\common\service;
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/**
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* 定时同步全局互斥锁，防止每分钟 cron 重叠执行打满 Node 队列
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*/
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class SplitCronLockService
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{
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private const LOCK_FILE = 'cron.lock';
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/**
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* 尝试获取全局 cron 锁
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*/
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public function acquire(): bool
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{
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$path = $this->lockPath();
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if ($this->isStaleLock($path)) {
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@unlink($path);
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}
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if (is_file($path)) {
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return false;
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}
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$payload = json_encode([
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'pid' => getmypid(),
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'time' => time(),
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], JSON_UNESCAPED_UNICODE);
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$written = @file_put_contents($path, $payload, LOCK_EX);
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return $written !== false;
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}
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/**
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* 释放全局 cron 锁
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*/
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public function release(): void
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{
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$path = $this->lockPath();
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if (is_file($path)) {
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@unlink($path);
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}
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}
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private function lockPath(): string
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{
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$runtime = defined('RUNTIME_PATH') ? RUNTIME_PATH : (dirname(__DIR__, 3) . '/runtime/');
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$dir = $runtime . 'split_ticket_sync/';
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if (!is_dir($dir)) {
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@mkdir($dir, 0755, true);
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}
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return $dir . self::LOCK_FILE;
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}
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private function isStaleLock(string $path): bool
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{
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if (!is_file($path)) {
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return false;
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}
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$mtime = (int) @filemtime($path);
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$ttl = SplitSyncConfigService::getCronLockTtlSeconds();
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return $mtime > 0 && (time() - $mtime) > $ttl;
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}
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}
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