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Mini Shell
Mini Shell
<?php
namespace Illuminate\Foundation\Http;
use Carbon\CarbonInterval;
use DateTimeInterface;
use Illuminate\Contracts\Debug\ExceptionHandler;
use Illuminate\Contracts\Foundation\Application;
use Illuminate\Contracts\Http\Kernel as KernelContract;
use Illuminate\Foundation\Http\Events\RequestHandled;
use Illuminate\Routing\Pipeline;
use Illuminate\Routing\Router;
use Illuminate\Support\Carbon;
use Illuminate\Support\Facades\Facade;
use Illuminate\Support\InteractsWithTime;
use InvalidArgumentException;
use Throwable;
class Kernel implements KernelContract
{
use InteractsWithTime;
/**
* The application implementation.
*
* @var \Illuminate\Contracts\Foundation\Application
*/
protected $app;
/**
* The router instance.
*
* @var \Illuminate\Routing\Router
*/
protected $router;
/**
* The bootstrap classes for the application.
*
* @var string[]
*/
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,
];
/**
* The application's middleware stack.
*
* @var array
*/
protected $middleware = [];
/**
* The application's route middleware groups.
*
* @var array
*/
protected $middlewareGroups = [];
/**
* The application's route middleware.
*
* @var array
*/
protected $routeMiddleware = [];
/**
* All of the registered request duration handlers.
*
* @var array
*/
protected $requestLifecycleDurationHandlers = [];
/**
* When the kernel starting handling the current request.
*
* @var \Illuminate\Support\Carbon|null
*/
protected $requestStartedAt;
/**
* The priority-sorted list of middleware.
*
* Forces non-global middleware to always be in the given order.
*
* @var string[]
*/
protected $middlewarePriority = [
\Illuminate\Foundation\Http\Middleware\HandlePrecognitiveRequests::class,
\Illuminate\Cookie\Middleware\EncryptCookies::class,
\Illuminate\Session\Middleware\StartSession::class,
\Illuminate\View\Middleware\ShareErrorsFromSession::class,
\Illuminate\Contracts\Auth\Middleware\AuthenticatesRequests::class,
\Illuminate\Routing\Middleware\ThrottleRequests::class,
\Illuminate\Routing\Middleware\ThrottleRequestsWithRedis::class,
\Illuminate\Contracts\Session\Middleware\AuthenticatesSessions::class,
\Illuminate\Routing\Middleware\SubstituteBindings::class,
\Illuminate\Auth\Middleware\Authorize::class,
];
/**
* 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;
$this->syncMiddlewareToRouter();
}
/**
* Handle an incoming HTTP request.
*
* @param \Illuminate\Http\Request $request
* @return \Illuminate\Http\Response
*/
public function handle($request)
{
$this->requestStartedAt = Carbon::now();
try {
$request->enableHttpMethodParameterOverride();
$response = $this->sendRequestThroughRouter($request);
} catch (Throwable $e) {
$this->reportException($e);
$response = $this->renderException($request, $e);
}
$this->app['events']->dispatch(
new RequestHandled($request, $response)
);
return $response;
}
/**
* Send the given request through the middleware / router.
*
* @param \Illuminate\Http\Request $request
* @return \Illuminate\Http\Response
*/
protected function sendRequestThroughRouter($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());
}
/**
* Bootstrap the application for HTTP requests.
*
* @return void
*/
public function bootstrap()
{
if (! $this->app->hasBeenBootstrapped()) {
$this->app->bootstrapWith($this->bootstrappers());
}
}
/**
* Get the route dispatcher callback.
*
* @return \Closure
*/
protected function dispatchToRouter()
{
return function ($request) {
$this->app->instance('request', $request);
return $this->router->dispatch($request);
};
}
/**
* Call the terminate method on any terminable middleware.
*
* @param \Illuminate\Http\Request $request
* @param \Illuminate\Http\Response $response
* @return void
*/
public function terminate($request, $response)
{
$this->terminateMiddleware($request, $response);
$this->app->terminate();
foreach ($this->requestLifecycleDurationHandlers as ['threshold' => $threshold, 'handler' => $handler]) {
$end ??= Carbon::now();
if ($this->requestStartedAt->diffInMilliseconds($end) > $threshold) {
$handler($this->requestStartedAt, $request, $response);
}
}
$this->requestStartedAt = null;
}
/**
* Call the terminate method on any terminable middleware.
*
* @param \Illuminate\Http\Request $request
* @param \Illuminate\Http\Response $response
* @return void
*/
protected function terminateMiddleware($request, $response)
{
$middlewares = $this->app->shouldSkipMiddleware() ? [] : array_merge(
$this->gatherRouteMiddleware($request),
$this->middleware
);
foreach ($middlewares as $middleware) {
if (! is_string($middleware)) {
continue;
}
[$name] = $this->parseMiddleware($middleware);
$instance = $this->app->make($name);
if (method_exists($instance, 'terminate')) {
$instance->terminate($request, $response);
}
}
}
/**
* Register a callback to be invoked when the requests lifecyle duration exceeds a given amount of time.
*
* @param \DateTimeInterface|\Carbon\CarbonInterval|float|int $threshold
* @param callable $handler
* @return void
*/
public function whenRequestLifecycleIsLongerThan($threshold, $handler)
{
$threshold = $threshold instanceof DateTimeInterface
? $this->secondsUntil($threshold) * 1000
: $threshold;
$threshold = $threshold instanceof CarbonInterval
? $threshold->totalMilliseconds
: $threshold;
$this->requestLifecycleDurationHandlers[] = [
'threshold' => $threshold,
'handler' => $handler,
];
}
/**
* When the request being handled started.
*
* @return \Illuminate\Support\Carbon|null
*/
public function requestStartedAt()
{
return $this->requestStartedAt;
}
/**
* Gather the route middleware for the given request.
*
* @param \Illuminate\Http\Request $request
* @return array
*/
protected function gatherRouteMiddleware($request)
{
if ($route = $request->route()) {
return $this->router->gatherRouteMiddleware($route);
}
return [];
}
/**
* Parse a middleware string to get the name and parameters.
*
* @param string $middleware
* @return array
*/
protected function parseMiddleware($middleware)
{
[$name, $parameters] = array_pad(explode(':', $middleware, 2), 2, []);
if (is_string($parameters)) {
$parameters = explode(',', $parameters);
}
return [$name, $parameters];
}
/**
* Determine if the kernel has a given middleware.
*
* @param string $middleware
* @return bool
*/
public function hasMiddleware($middleware)
{
return in_array($middleware, $this->middleware);
}
/**
* Add a new middleware to the beginning of the stack if it does not already exist.
*
* @param string $middleware
* @return $this
*/
public function prependMiddleware($middleware)
{
if (array_search($middleware, $this->middleware) === false) {
array_unshift($this->middleware, $middleware);
}
return $this;
}
/**
* Add a new middleware to end of the stack if it does not already exist.
*
* @param string $middleware
* @return $this
*/
public function pushMiddleware($middleware)
{
if (array_search($middleware, $this->middleware) === false) {
$this->middleware[] = $middleware;
}
return $this;
}
/**
* Prepend the given middleware to the given middleware group.
*
* @param string $group
* @param string $middleware
* @return $this
*
* @throws \InvalidArgumentException
*/
public function prependMiddlewareToGroup($group, $middleware)
{
if (! isset($this->middlewareGroups[$group])) {
throw new InvalidArgumentException("The [{$group}] middleware group has not been defined.");
}
if (array_search($middleware, $this->middlewareGroups[$group]) === false) {
array_unshift($this->middlewareGroups[$group], $middleware);
}
$this->syncMiddlewareToRouter();
return $this;
}
/**
* Append the given middleware to the given middleware group.
*
* @param string $group
* @param string $middleware
* @return $this
*
* @throws \InvalidArgumentException
*/
public function appendMiddlewareToGroup($group, $middleware)
{
if (! isset($this->middlewareGroups[$group])) {
throw new InvalidArgumentException("The [{$group}] middleware group has not been defined.");
}
if (array_search($middleware, $this->middlewareGroups[$group]) === false) {
$this->middlewareGroups[$group][] = $middleware;
}
$this->syncMiddlewareToRouter();
return $this;
}
/**
* Prepend the given middleware to the middleware priority list.
*
* @param string $middleware
* @return $this
*/
public function prependToMiddlewarePriority($middleware)
{
if (! in_array($middleware, $this->middlewarePriority)) {
array_unshift($this->middlewarePriority, $middleware);
}
$this->syncMiddlewareToRouter();
return $this;
}
/**
* Append the given middleware to the middleware priority list.
*
* @param string $middleware
* @return $this
*/
public function appendToMiddlewarePriority($middleware)
{
if (! in_array($middleware, $this->middlewarePriority)) {
$this->middlewarePriority[] = $middleware;
}
$this->syncMiddlewareToRouter();
return $this;
}
/**
* Sync the current state of the middleware to the router.
*
* @return void
*/
protected function syncMiddlewareToRouter()
{
$this->router->middlewarePriority = $this->middlewarePriority;
foreach ($this->middlewareGroups as $key => $middleware) {
$this->router->middlewareGroup($key, $middleware);
}
foreach ($this->routeMiddleware as $key => $middleware) {
$this->router->aliasMiddleware($key, $middleware);
}
}
/**
* Get the priority-sorted list of middleware.
*
* @return array
*/
public function getMiddlewarePriority()
{
return $this->middlewarePriority;
}
/**
* Get the bootstrap classes for the application.
*
* @return array
*/
protected function bootstrappers()
{
return $this->bootstrappers;
}
/**
* Report the exception to the exception handler.
*
* @param \Throwable $e
* @return void
*/
protected function reportException(Throwable $e)
{
$this->app[ExceptionHandler::class]->report($e);
}
/**
* Render the exception to a response.
*
* @param \Illuminate\Http\Request $request
* @param \Throwable $e
* @return \Symfony\Component\HttpFoundation\Response
*/
protected function renderException($request, Throwable $e)
{
return $this->app[ExceptionHandler::class]->render($request, $e);
}
/**
* Get the application's route middleware groups.
*
* @return array
*/
public function getMiddlewareGroups()
{
return $this->middlewareGroups;
}
/**
* Get the application's route middleware.
*
* @return array
*/
public function getRouteMiddleware()
{
return $this->routeMiddleware;
}
/**
* Get the Laravel application instance.
*
* @return \Illuminate\Contracts\Foundation\Application
*/
public function getApplication()
{
return $this->app;
}
/**
* Set the Laravel application instance.
*
* @param \Illuminate\Contracts\Foundation\Application $app
* @return $this
*/
public function setApplication(Application $app)
{
$this->app = $app;
return $this;
}
}
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