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<?php |
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// +---------------------------------------------------------------------- |
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// | ThinkPHP [ WE CAN DO IT JUST THINK ] |
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// +---------------------------------------------------------------------- |
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// | Copyright (c) 2006~2019 http://thinkphp.cn All rights reserved. |
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// +---------------------------------------------------------------------- |
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// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 ) |
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// +---------------------------------------------------------------------- |
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// | Author: Slince <[email protected]> |
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// +---------------------------------------------------------------------- |
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declare (strict_types = 1); |
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namespace think; |
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use InvalidArgumentException; |
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use LogicException; |
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use think\exception\HttpResponseException; |
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/** |
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* 中间件管理类 |
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*/ |
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class Middleware |
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{ |
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/** |
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* 中间件执行队列 |
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* @var array |
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*/ |
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protected $queue = []; |
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/** |
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* 配置 |
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* @var array |
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*/ |
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protected $config = []; |
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/** |
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* 应用对象 |
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* @var App |
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*/ |
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protected $app; |
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public function __construct(array $config = []) |
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{ |
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$this->config = array_merge($this->config, $config); |
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} |
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public static function __make(App $app, Config $config) |
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{ |
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return (new static($config->get('middleware')))->setApp($app); |
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} |
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public function setConfig(array $config): void |
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{ |
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$this->config = array_merge($this->config, $config); |
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} |
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/** |
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* 设置应用对象 |
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* @access public |
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* @param App $app |
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* @return $this |
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*/ |
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public function setApp(App $app) |
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{ |
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$this->app = $app; |
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return $this; |
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} |
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/** |
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* 导入中间件 |
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* @access public |
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* @param array $middlewares |
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* @param string $type 中间件类型 |
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* @return void |
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*/ |
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public function import(array $middlewares = [], string $type = 'route'): void |
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{ |
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foreach ($middlewares as $middleware) { |
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$this->add($middleware, $type); |
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} |
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} |
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/** |
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* 注册中间件 |
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* @access public |
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* @param mixed $middleware |
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* @param string $type 中间件类型 |
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* @return void |
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*/ |
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public function add($middleware, string $type = 'route'): void |
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{ |
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if (is_null($middleware)) { |
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return; |
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} |
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$middleware = $this->buildMiddleware($middleware, $type); |
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if ($middleware) { |
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$this->queue[$type][] = $middleware; |
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} |
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} |
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/** |
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* 注册控制器中间件 |
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* @access public |
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* @param mixed $middleware |
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* @return void |
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*/ |
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public function controller($middleware): void |
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{ |
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$this->add($middleware, 'controller'); |
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} |
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/** |
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* 移除中间件 |
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* @access public |
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* @param mixed $middleware |
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* @param string $type 中间件类型 |
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*/ |
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public function unshift($middleware, string $type = 'route') |
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{ |
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if (is_null($middleware)) { |
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return; |
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} |
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$middleware = $this->buildMiddleware($middleware, $type); |
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if (!empty($middleware)) { |
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array_unshift($this->queue[$type], $middleware); |
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} |
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} |
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/** |
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* 获取注册的中间件 |
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* @access public |
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* @param string $type 中间件类型 |
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*/ |
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public function all(string $type = 'route'): array |
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{ |
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return $this->queue[$type] ?? []; |
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} |
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/** |
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* 中间件调度 |
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* @access public |
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* @param Request $request |
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* @param string $type 中间件类型 |
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*/ |
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public function dispatch(Request $request, string $type = 'route') |
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{ |
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return call_user_func($this->resolve($type), $request); |
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} |
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/** |
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* 解析中间件 |
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* @access protected |
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* @param mixed $middleware |
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* @param string $type 中间件类型 |
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* @return array |
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*/ |
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protected function buildMiddleware($middleware, string $type = 'route'): array |
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{ |
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if (is_array($middleware)) { |
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list($middleware, $param) = $middleware; |
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} |
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if ($middleware instanceof \Closure) { |
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return [$middleware, $param ?? null]; |
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} |
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if (!is_string($middleware)) { |
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throw new InvalidArgumentException('The middleware is invalid'); |
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} |
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if (isset($this->config[$middleware])) { |
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$middleware = $this->config[$middleware]; |
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} |
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if (is_array($middleware)) { |
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$this->import($middleware, $type); |
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return []; |
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} |
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if (strpos($middleware, ':')) { |
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list($middleware, $param) = explode(':', $middleware, 2); |
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} |
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return [[$middleware, 'handle'], $param ?? null]; |
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} |
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protected function resolve(string $type = 'route') |
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{ |
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return function (Request $request) use ($type) { |
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$middleware = array_shift($this->queue[$type]); |
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if (null === $middleware) { |
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throw new InvalidArgumentException('The queue was exhausted, with no response returned'); |
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} |
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list($call, $param) = $middleware; |
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if (is_array($call) && is_string($call[0])) { |
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$call = [$this->app->make($call[0]), $call[1]]; |
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} |
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try { |
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$response = $this->app->invoke($call, [$request, $this->resolve($type), $param]); |
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} catch (HttpResponseException $exception) { |
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$response = $exception->getResponse(); |
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} |
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if (!$response instanceof Response) { |
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throw new LogicException('The middleware must return Response instance'); |
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} |
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return $response; |
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}; |
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} |
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} |
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