dootask/app/Services/RequestContext.php
2025-07-31 14:26:06 +08:00

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<?php
namespace App\Services;
use App\Module\ClientContext;
use Illuminate\Http\Request;
use Swoole\Coroutine;
/**
* 请求上下文
*/
class RequestContext
{
/** @var string 请求ID的上下文键 */
private const CONTEXT_KEY = 'request_id';
/** @var string 请求ID前缀 */
private const REQUEST_ID_PREFIX = 'req';
/** @var int 上下文的TTL生存时间 */
private const TTL_SECONDS = 3600; // 上下文 TTL 为 1 小时
/** @var array<string, ClientContext> 存储每个请求的上下文数据 */
private static array $context = [];
/**
* 生成请求唯一ID
*/
public static function generateRequestId(): string
{
$pid = getmypid();
$cid = Coroutine::getCid() ?? 0;
$microtime = str_replace('.', '', microtime(true));
return self::REQUEST_ID_PREFIX . '_' . $pid . '_' . $cid . '_' . $microtime . '_' . mt_rand(1000, 9999);
}
/**
* 获取当前请求ID
*/
public static function getCurrentRequestId($requestId = null): ?string
{
// 如果提供了有效的请求ID直接返回
if ($requestId && str_starts_with($requestId, self::REQUEST_ID_PREFIX)) {
return $requestId;
}
// 尝试从当前请求获取
$request = request();
if ($request && method_exists($request, 'attributes') && $request->attributes) {
if (!$request->attributes->has(static::CONTEXT_KEY)) {
$request->attributes->set(static::CONTEXT_KEY, self::generateRequestId());
}
return $request->attributes->get(static::CONTEXT_KEY);
}
// 如果没有请求上下文生成一个新的请求ID
return self::generateRequestId();
}
/**
* 获取当前请求的上下文示例
*/
public static function getCurrentRequestContext($requestId = null): ?ClientContext
{
$requestId = self::getCurrentRequestId($requestId);
if ($requestId === null) {
return null;
}
if (!isset(self::$context[$requestId])) {
// 如果上下文不存在,则创建一个新的上下文
self::$context[$requestId] = new ClientContext();
} else {
// 如果上下文已存在,更新访问时间
self::$context[$requestId]->update();
}
return self::$context[$requestId];
}
/**
* 清理过期上下文数据,防止内存泄漏
*/
public static function cleanExpired(): void
{
$now = microtime(true);
// 清理过期的上下文
foreach (self::$context as $requestId => $context) {
if ($now - $context->updatedAt > self::TTL_SECONDS) {
unset(self::$context[$requestId]);
}
}
}
/** ***************************************************************************************** */
/** ***************************************************************************************** */
/** ***************************************************************************************** */
/**
* 设置请求上下文
*
* @param string $key
* @param mixed $value
* @param string|null $requestId
* @return void
*/
public static function set(string $key, mixed $value, ?string $requestId = null): void
{
$context = self::getCurrentRequestContext($requestId);
if ($context === null) {
return;
}
$context->set($key, $value);
// 概率性清理,避免频繁清理影响性能
if (mt_rand(1, 100) === 1) {
self::cleanExpired();
}
}
/**
* 批量设置上下文数据
*
* @param array<string, mixed> $data
* @param string|null $requestId
* @return void
*/
public static function setMultiple(array $data, ?string $requestId = null): void
{
$context = self::getCurrentRequestContext($requestId);
if ($context === null) {
return;
}
$context->setMultiple($data);
}
// 与 set 方法的区别是save 方法会返回传入的 value 值
public static function save(string $key, mixed $value, ?string $requestId = null): mixed
{
self::set($key, $value, $requestId);
return $value;
}
/**
* 获取请求上下文
*
* @param string $key
* @param mixed $default
* @param string|null $requestId
* @return mixed
*/
public static function get(string $key, mixed $default = null, ?string $requestId = null): mixed
{
$context = self::getCurrentRequestContext($requestId);
if ($context === null) {
return $default;
}
return $context->get($key, $default);
}
/**
* 获取当前请求的所有上下文数据
*
* @param string|null $requestId
* @return array<string, mixed>
*/
public static function getAll(?string $requestId = null): array
{
$context = self::getCurrentRequestContext($requestId);
if ($context === null) {
return [];
}
return $context->context ?? [];
}
/**
* 判断请求上下文是否存在
*
* @param string $key
* @param string|null $requestId
* @return bool
*/
public static function has(string $key, ?string $requestId = null): bool
{
$context = self::getCurrentRequestContext($requestId);
if ($context === null) {
return false;
}
return $context->has($key);
}
/**
* 清理请求上下文
*
* @param string|null $requestId
* @return void
*/
public static function clean(?string $requestId = null): void
{
$requestId = self::getCurrentRequestId($requestId);
if ($requestId === null) {
return;
}
unset(self::$context[$requestId]);
}
/** ***************************************************************************************** */
/** ***************************************************************************************** */
/** ***************************************************************************************** */
/**
* 更新请求的基本URL
*
* @param Request $request
* @return void
*/
public static function updateBaseUrl($request)
{
if ($request->path() !== 'api/system/setting') {
return;
}
$schemeAndHttpHost = $request->getSchemeAndHttpHost();
if (str_contains($schemeAndHttpHost, '127.0.0.1') || str_contains($schemeAndHttpHost, 'localhost')) {
return;
}
\Cache::forever('RequestContext::base_url', $schemeAndHttpHost);
}
/**
* 替换请求的基本URL
*
* @param string $url
* @return string
*/
public static function replaceBaseUrl(string $url): string
{
// 先提取主机部分
$pattern = '/^(https?:\/\/[^\/?#:]+(:\d+)?)/i';
if (!preg_match($pattern, $url, $matches)) {
return $url; // 如果不是有效URL直接返回
}
$schemeAndHttpHost = $matches[1] ?? '';
if (!$schemeAndHttpHost) {
return $url;
}
// 只检查主机部分是否为本地主机
if (str_contains($schemeAndHttpHost, '127.0.0.1') || str_contains($schemeAndHttpHost, 'localhost')) {
$baseUrl = \Cache::get('RequestContext::base_url');
if ($baseUrl) {
return $baseUrl . substr($url, strlen($schemeAndHttpHost));
}
}
return $url;
}
/**
* 清除基本URL缓存
*/
public static function clearBaseUrlCache(): void
{
\Cache::forget('RequestContext::base_url');
}
}