この記事は、Laravel の HTTP コアの詳細な分析を提供します。必要な方は参考にしていただければ幸いです。
Http カーネル
Http カーネルは、Laravel でフレームワークのコアコンポーネントを接続し、## を介してネットワークリクエストを行うために使用されます。 #public/index .php は Http カーネルを使用してフレームワークを開始し、artisan コマンド、スケジュールされたタスク、キュー起動フレームワークなどの他のプロセスはコンソール カーネルを使用します。 out Http カーネルが行うこと。
<?php
// 第一部分： 创建应用实例
$app = new Illuminate\Foundation\Application(
realpath(__DIR__.'/../')
);
// 第二部分： 完成内核绑定
$app->singleton(
Illuminate\Contracts\Http\Kernel::class,
App\Http\Kernel::class
);
$app->singleton(
Illuminate\Contracts\Console\Kernel::class,
App\Console\Kernel::class
);
$app->singleton(
Illuminate\Contracts\Debug\ExceptionHandler::class,
App\Exceptions\Handler::class
);
return $app;<?php
namespace App\Http;
use Illuminate\Foundation\Http\Kernel as HttpKernel;
class Kernel extends HttpKernel
{
/**
* The application's global HTTP middleware stack.
*
* These middleware are run during every request to your application.
*
* @var array
*/
protected $middleware = [
\Illuminate\Foundation\Http\Middleware\CheckForMaintenanceMode::class,
\Illuminate\Foundation\Http\Middleware\ValidatePostSize::class,
\App\Http\Middleware\TrimStrings::class,
\Illuminate\Foundation\Http\Middleware\ConvertEmptyStringsToNull::class,
\App\Http\Middleware\TrustProxies::class,
];
/**
* The application's route middleware groups.
*
* @var array
*/
protected $middlewareGroups = [
'web' => [
\App\Http\Middleware\EncryptCookies::class,
\Illuminate\Cookie\Middleware\AddQueuedCookiesToResponse::class,
\Illuminate\Session\Middleware\StartSession::class,
// \Illuminate\Session\Middleware\AuthenticateSession::class,
\Illuminate\View\Middleware\ShareErrorsFromSession::class,
\App\Http\Middleware\VerifyCsrfToken::class,
\Illuminate\Routing\Middleware\SubstituteBindings::class,
],
'api' => [
'throttle:60,1',
'bindings',
],
];
/**
* The application's route middleware.
*
* These middleware may be assigned to groups or used inpidually.
*
* @var array
*/
protected $routeMiddleware = [
'auth' => \Illuminate\Auth\Middleware\Authenticate::class,
'auth.basic' => \Illuminate\Auth\Middleware\AuthenticateWithBasicAuth::class,
'bindings' => \Illuminate\Routing\Middleware\SubstituteBindings::class,
'can' => \Illuminate\Auth\Middleware\Authorize::class,
'guest' => \App\Http\Middleware\RedirectIfAuthenticated::class,
'throttle' => \Illuminate\Routing\Middleware\ThrottleRequests::class,
];
}protected $bootstrappers = [ \Illuminate\Foundation\Bootstrap\LoadEnvironmentVariables::class, \Illuminate\Foundation\Bootstrap\LoadConfiguration::class, \Illuminate\Foundation\Bootstrap\HandleExceptions::class, \Illuminate\Foundation\Bootstrap\RegisterFacades::class, \Illuminate\Foundation\Bootstrap\RegisterProviders::class, \Illuminate\Foundation\Bootstrap\BootProviders::class, ];
$kernel = $app->make(Illuminate\Contracts\Http\Kernel::class);
namespace Illuminate\Foundation\Http;
...
class Kernel implements KernelContract
{
/**
* Create a new HTTP kernel instance.
*
* @param \Illuminate\Contracts\Foundation\Application $app
* @param \Illuminate\Routing\Router $router
* @return void
*/
public function __construct(Application $app, Router $router)
{
$this->app = $app;
$this->router = $router;
$router->middlewarePriority = $this->middlewarePriority;
foreach ($this->middlewareGroups as $key => $middleware) {
$router->middlewareGroup($key, $middleware);
}
foreach ($this->routeMiddleware as $key => $middleware) {
$router->aliasMiddleware($key, $middleware);
}
}
}
namespace Illuminate/Routing;
class Router implements RegistrarContract, BindingRegistrar
{
/**
* Register a group of middleware.
*
* @param string $name
* @param array $middleware
* @return $this
*/
public function middlewareGroup($name, array $middleware)
{
$this->middlewareGroups[$name] = $middleware;
return $this;
}
/**
* Register a short-hand name for a middleware.
*
* @param string $name
* @param string $class
* @return $this
*/
public function aliasMiddleware($name, $class)
{
$this->middleware[$name] = $class;
return $this;
}
}//public/index.php $response = $kernel->handle( $request = Illuminate\Http\Request::capture() );
namespace Illuminate\Foundation\Http;
class Kernel implements KernelContract
{
/**
* Handle an incoming HTTP request.
*
* @param \Illuminate\Http\Request $request
* @return \Illuminate\Http\Response
*/
public function handle($request)
{
try {
$request->enableHttpMethodParameterOverride();
$response = $this->sendRequestThroughRouter($request);
} catch (Exception $e) {
$this->reportException($e);
$response = $this->renderException($request, $e);
} catch (Throwable $e) {
$this->reportException($e = new FatalThrowableError($e));
$response = $this->renderException($request, $e);
}
$this->app['events']->dispatch(
new Events\RequestHandled($request, $response)
);
return $response;
}
}protected function sendRequestThroughRouter($request)
{
$this->app->instance('request', $request);
Facade::clearResolvedInstance('request');
$this->bootstrap();
return (new Pipeline($this->app))
->send($request)
->through($this->app->shouldSkipMiddleware() ? [] : $this->middleware)
->then($this->dispatchToRouter());
}
/*引导启动Laravel应用程序
1. DetectEnvironment 检查环境
2. LoadConfiguration 加载应用配置
3. ConfigureLogging 配置日至
4. HandleException 注册异常处理的Handler
5. RegisterFacades 注册Facades
6. RegisterProviders 注册Providers
7. BootProviders 启动Providers
*/
public function bootstrap()
{
if (! $this->app->hasBeenBootstrapped()) {
/**依次执行$bootstrappers中每一个bootstrapper的bootstrap()函数
$bootstrappers = [
'Illuminate\Foundation\Bootstrap\DetectEnvironment',
'Illuminate\Foundation\Bootstrap\LoadConfiguration',
'Illuminate\Foundation\Bootstrap\ConfigureLogging',
'Illuminate\Foundation\Bootstrap\HandleExceptions',
'Illuminate\Foundation\Bootstrap\RegisterFacades',
'Illuminate\Foundation\Bootstrap\RegisterProviders',
'Illuminate\Foundation\Bootstrap\BootProviders',
];*/
$this->app->bootstrapWith($this->bootstrappers());
}
}//public/index.php $response = $kernel->handle( $request = Illuminate\Http\Request::capture() ); // 发送响应 $response->send();
Symfony で定義されている Illuminate\Http\Response 親クラスの send() メソッドによって完了します。 \Component\HttpFoundation\Response 真ん中。
public function send()
{
$this->sendHeaders();// 发送响应头部信息
$this->sendContent();// 发送报文主题
if (function_exists('fastcgi_finish_request')) {
fastcgi_finish_request();
} elseif (!\in_array(PHP_SAPI, array('cli', 'phpdbg'), true)) {
static::closeOutputBuffers(0, true);
}
return $this;
}terminableミドルウェアを呼び出して後続の処理を実行します。たとえば、Laravel の組み込み「セッション」ミドルウェアは、応答がブラウザーに送信された後、セッション データをメモリに書き込みます。
// public/index.php // 终止程序 $kernel->terminate($request, $response);
//Illuminate\Foundation\Http\Kernel
public function terminate($request, $response)
{
$this->terminateMiddleware($request, $response);
$this->app->terminate();
}
// 终止中间件
protected function terminateMiddleware($request, $response)
{
$middlewares = $this->app->shouldSkipMiddleware() ? [] : array_merge(
$this->gatherRouteMiddleware($request),
$this->middleware
);
foreach ($middlewares as $middleware) {
if (! is_string($middleware)) {
continue;
}
list($name, $parameters) = $this->parseMiddleware($middleware);
$instance = $this->app->make($name);
if (method_exists($instance, 'terminate')) {
$instance->terminate($request, $response);
}
}
}terminate メソッドは、呼び出しが完了すると、terminable ミドルウェアの terminate メソッドを呼び出します。 HTTP リクエストが受信され、レスポンスが返されます。アプリケーションのライフサイクルが終了しました。
以上がLaravelにおけるHTTPカーネルの詳細な分析の詳細内容です。詳細については、PHP 中国語 Web サイトの他の関連記事を参照してください。
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