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RoutesRequests.php
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RoutesRequests.php
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<?php
namespace Laravel\Lumen\Concerns;
use Closure;
use Exception;
use Throwable;
use FastRoute\Dispatcher;
use Illuminate\Support\Arr;
use Illuminate\Support\Str;
use Illuminate\Http\Request;
use Illuminate\Http\Response;
use Laravel\Lumen\Routing\Pipeline;
use Illuminate\Http\Exception\HttpResponseException;
use Laravel\Lumen\Routing\Closure as RoutingClosure;
use Laravel\Lumen\Routing\Controller as LumenController;
use Symfony\Component\HttpFoundation\BinaryFileResponse;
use Psr\Http\Message\ResponseInterface as PsrResponseInterface;
use Symfony\Component\HttpFoundation\Request as SymfonyRequest;
use Symfony\Bridge\PsrHttpMessage\Factory\HttpFoundationFactory;
use Symfony\Component\HttpFoundation\Response as SymfonyResponse;
use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;
use Symfony\Component\HttpKernel\Exception\MethodNotAllowedHttpException;
trait RoutesRequests
{
/**
* All of the routes waiting to be registered.
*
* @var array
*/
protected $routes = [];
/**
* All of the named routes and URI pairs.
*
* @var array
*/
public $namedRoutes = [];
/**
* All of the global middleware for the application.
*
* @var array
*/
protected $middleware = [];
/**
* All of the route specific middleware short-hands.
*
* @var array
*/
protected $routeMiddleware = [];
/**
* The route group attribute stack.
*
* @var array
*/
protected $groupStack = [];
/**
* The current route being dispatched.
*
* @var array
*/
protected $currentRoute;
/**
* The FastRoute dispatcher.
*
* @var \FastRoute\Dispatcher
*/
protected $dispatcher;
/**
* Register a set of routes with a set of shared attributes.
*
* @param array $attributes
* @param \Closure $callback
* @return void
*/
public function group(array $attributes, Closure $callback)
{
if (isset($attributes['middleware']) && is_string($attributes['middleware'])) {
$attributes['middleware'] = explode('|', $attributes['middleware']);
}
$this->updateGroupStack($attributes);
call_user_func($callback, $this);
array_pop($this->groupStack);
}
/**
* Update the group stack with the given attributes.
*
* @param array $attributes
* @return void
*/
protected function updateGroupStack(array $attributes)
{
if (! empty($this->groupStack)) {
$attributes = $this->mergeWithLastGroup($attributes);
}
$this->groupStack[] = $attributes;
}
/**
* Merge the given group attributes.
*
* @param array $new
* @param array $old
* @return array
*/
public function mergeGroup($new, $old)
{
$new['namespace'] = static::formatUsesPrefix($new, $old);
$new['prefix'] = static::formatGroupPrefix($new, $old);
if (isset($new['domain'])) {
unset($old['domain']);
}
if (isset($old['as'])) {
$new['as'] = $old['as'].(isset($new['as']) ? '.'.$new['as'] : '');
}
if (isset($old['suffix']) && ! isset($new['suffix'])) {
$new['suffix'] = $old['suffix'];
}
return array_merge_recursive(Arr::except($old, ['namespace', 'prefix', 'as', 'suffix']), $new);
}
/**
* Merge the given group attributes with the last added group.
*
* @param array $new
* @return array
*/
protected function mergeWithLastGroup($new)
{
return $this->mergeGroup($new, end($this->groupStack));
}
/**
* Format the uses prefix for the new group attributes.
*
* @param array $new
* @param array $old
* @return string|null
*/
protected static function formatUsesPrefix($new, $old)
{
if (isset($new['namespace'])) {
return isset($old['namespace']) && strpos($new['namespace'], '\\') !== 0
? trim($old['namespace'], '\\').'\\'.trim($new['namespace'], '\\')
: trim($new['namespace'], '\\');
}
return isset($old['namespace']) ? $old['namespace'] : null;
}
/**
* Format the prefix for the new group attributes.
*
* @param array $new
* @param array $old
* @return string|null
*/
protected static function formatGroupPrefix($new, $old)
{
$oldPrefix = isset($old['prefix']) ? $old['prefix'] : null;
if (isset($new['prefix'])) {
return trim($oldPrefix, '/').'/'.trim($new['prefix'], '/');
}
return $oldPrefix;
}
/**
* Register a route with the application.
*
* @param string $uri
* @param mixed $action
* @return $this
*/
public function get($uri, $action)
{
$this->addRoute('GET', $uri, $action);
return $this;
}
/**
* Register a route with the application.
*
* @param string $uri
* @param mixed $action
* @return $this
*/
public function post($uri, $action)
{
$this->addRoute('POST', $uri, $action);
return $this;
}
/**
* Register a route with the application.
*
* @param string $uri
* @param mixed $action
* @return $this
*/
public function put($uri, $action)
{
$this->addRoute('PUT', $uri, $action);
return $this;
}
/**
* Register a route with the application.
*
* @param string $uri
* @param mixed $action
* @return $this
*/
public function patch($uri, $action)
{
$this->addRoute('PATCH', $uri, $action);
return $this;
}
/**
* Register a route with the application.
*
* @param string $uri
* @param mixed $action
* @return $this
*/
public function delete($uri, $action)
{
$this->addRoute('DELETE', $uri, $action);
return $this;
}
/**
* Register a route with the application.
*
* @param string $uri
* @param mixed $action
* @return $this
*/
public function options($uri, $action)
{
$this->addRoute('OPTIONS', $uri, $action);
return $this;
}
/**
* Add a route to the collection.
*
* @param array|string $method
* @param string $uri
* @param mixed $action
* @return void
*/
public function addRoute($method, $uri, $action)
{
$action = $this->parseAction($action);
$attributes = null;
if ($this->hasGroupStack()) {
$attributes = $this->mergeWithLastGroup([]);
}
if (isset($attributes) && is_array($attributes)) {
if (isset($attributes['prefix'])) {
$uri = trim($attributes['prefix'], '/').'/'.trim($uri, '/');
}
if (isset($attributes['suffix'])) {
$uri = trim($uri, '/').rtrim($attributes['suffix'], '/');
}
$action = $this->mergeGroupAttributes($action, $attributes);
}
$uri = '/'.trim($uri, '/');
if (isset($action['as'])) {
$this->namedRoutes[$action['as']] = $uri;
}
if (is_array($method)) {
foreach ($method as $verb) {
$this->routes[$verb.$uri] = ['method' => $verb, 'uri' => $uri, 'action' => $action];
}
} else {
$this->routes[$method.$uri] = ['method' => $method, 'uri' => $uri, 'action' => $action];
}
}
/**
* Parse the action into an array format.
*
* @param mixed $action
* @return array
*/
protected function parseAction($action)
{
if (is_string($action)) {
return ['uses' => $action];
} elseif (! is_array($action)) {
return [$action];
}
if (isset($action['middleware']) && is_string($action['middleware'])) {
$action['middleware'] = explode('|', $action['middleware']);
}
return $action;
}
/**
* Determine if the router currently has a group stack.
*
* @return bool
*/
public function hasGroupStack()
{
return ! empty($this->groupStack);
}
/**
* Merge the group attributes into the action.
*
* @param array $action
* @param array $attributes The group attributes
* @return array
*/
protected function mergeGroupAttributes(array $action, array $attributes)
{
$namespace = isset($attributes['namespace']) ? $attributes['namespace'] : null;
$middleware = isset($attributes['middleware']) ? $attributes['middleware'] : null;
$as = isset($attributes['as']) ? $attributes['as'] : null;
return $this->mergeNamespaceGroup(
$this->mergeMiddlewareGroup(
$this->mergeAsGroup($action, $as),
$middleware),
$namespace
);
}
/**
* Merge the namespace group into the action.
*
* @param array $action
* @param string $namespace
* @return array
*/
protected function mergeNamespaceGroup(array $action, $namespace = null)
{
if (isset($namespace) && isset($action['uses'])) {
$action['uses'] = $namespace.'\\'.$action['uses'];
}
return $action;
}
/**
* Merge the middleware group into the action.
*
* @param array $action
* @param array $middleware
* @return array
*/
protected function mergeMiddlewareGroup(array $action, $middleware = null)
{
if (isset($middleware)) {
if (isset($action['middleware'])) {
$action['middleware'] = array_merge($middleware, $action['middleware']);
} else {
$action['middleware'] = $middleware;
}
}
return $action;
}
/**
* Merge the as group into the action.
*
* @param array $action
* @param string $as
* @return array
*/
protected function mergeAsGroup(array $action, $as = null)
{
if (isset($as) && ! empty($as)) {
if (isset($action['as'])) {
$action['as'] = $as.'.'.$action['as'];
} else {
$action['as'] = $as;
}
}
return $action;
}
/**
* Add new middleware to the application.
*
* @param Closure|array $middleware
* @return $this
*/
public function middleware($middleware)
{
if (! is_array($middleware)) {
$middleware = [$middleware];
}
$this->middleware = array_unique(array_merge($this->middleware, $middleware));
return $this;
}
/**
* Define the route middleware for the application.
*
* @param array $middleware
* @return $this
*/
public function routeMiddleware(array $middleware)
{
$this->routeMiddleware = array_merge($this->routeMiddleware, $middleware);
return $this;
}
/**
* {@inheritdoc}
*/
public function handle(SymfonyRequest $request)
{
$response = $this->dispatch($request);
if (count($this->middleware) > 0) {
$this->callTerminableMiddleware($response);
}
return $response;
}
/**
* Run the application and send the response.
*
* @param SymfonyRequest|null $request
* @return void
*/
public function run($request = null)
{
$response = $this->dispatch($request);
if ($response instanceof SymfonyResponse) {
$response->send();
} else {
echo (string) $response;
}
if (count($this->middleware) > 0) {
$this->callTerminableMiddleware($response);
}
}
/**
* Call the terminable middleware.
*
* @param mixed $response
* @return void
*/
protected function callTerminableMiddleware($response)
{
if ($this->shouldSkipMiddleware()) {
return;
}
$response = $this->prepareResponse($response);
foreach ($this->middleware as $middleware) {
if (! is_string($middleware)) {
continue;
}
$instance = $this->make(explode(':', $middleware)[0]);
if (method_exists($instance, 'terminate')) {
$instance->terminate($this->make('request'), $response);
}
}
}
/**
* Dispatch the incoming request.
*
* @param SymfonyRequest|null $request
* @return Response
*/
public function dispatch($request = null)
{
list($method, $pathInfo) = $this->parseIncomingRequest($request);
try {
return $this->sendThroughPipeline($this->middleware, function () use ($method, $pathInfo) {
if (isset($this->routes[$method.$pathInfo])) {
return $this->handleFoundRoute([true, $this->routes[$method.$pathInfo]['action'], []]);
}
return $this->handleDispatcherResponse(
$this->createDispatcher()->dispatch($method, $pathInfo)
);
});
} catch (Exception $e) {
return $this->prepareResponse($this->sendExceptionToHandler($e));
} catch (Throwable $e) {
return $this->prepareResponse($this->sendExceptionToHandler($e));
}
}
/**
* Parse the incoming request and return the method and path info.
*
* @param \Symfony\Component\HttpFoundation\Request|null $request
* @return array
*/
protected function parseIncomingRequest($request)
{
if (! $request) {
$request = Request::capture();
}
$this->instance(Request::class, $this->prepareRequest($request));
return [$request->getMethod(), $request->getPathInfo()];
}
/**
* Create a FastRoute dispatcher instance for the application.
*
* @return Dispatcher
*/
protected function createDispatcher()
{
return $this->dispatcher ?: \FastRoute\simpleDispatcher(function ($r) {
foreach ($this->routes as $route) {
$r->addRoute($route['method'], $route['uri'], $route['action']);
}
});
}
/**
* Set the FastRoute dispatcher instance.
*
* @param \FastRoute\Dispatcher $dispatcher
* @return void
*/
public function setDispatcher(Dispatcher $dispatcher)
{
$this->dispatcher = $dispatcher;
}
/**
* Handle the response from the FastRoute dispatcher.
*
* @param array $routeInfo
* @return mixed
*/
protected function handleDispatcherResponse($routeInfo)
{
switch ($routeInfo[0]) {
case Dispatcher::NOT_FOUND:
throw new NotFoundHttpException;
case Dispatcher::METHOD_NOT_ALLOWED:
throw new MethodNotAllowedHttpException($routeInfo[1]);
case Dispatcher::FOUND:
return $this->handleFoundRoute($routeInfo);
}
}
/**
* Handle a route found by the dispatcher.
*
* @param array $routeInfo
* @return mixed
*/
protected function handleFoundRoute($routeInfo)
{
$this->currentRoute = $routeInfo;
$this['request']->setRouteResolver(function () {
return $this->currentRoute;
});
$action = $routeInfo[1];
// Pipe through route middleware...
if (isset($action['middleware'])) {
$middleware = $this->gatherMiddlewareClassNames($action['middleware']);
return $this->prepareResponse($this->sendThroughPipeline($middleware, function () {
return $this->callActionOnArrayBasedRoute($this['request']->route());
}));
}
return $this->prepareResponse(
$this->callActionOnArrayBasedRoute($routeInfo)
);
}
/**
* Call the Closure on the array based route.
*
* @param array $routeInfo
* @return mixed
*/
protected function callActionOnArrayBasedRoute($routeInfo)
{
$action = $routeInfo[1];
if (isset($action['uses'])) {
return $this->prepareResponse($this->callControllerAction($routeInfo));
}
foreach ($action as $value) {
if ($value instanceof Closure) {
$closure = $value->bindTo(new RoutingClosure);
break;
}
}
try {
return $this->prepareResponse($this->call($closure, $routeInfo[2]));
} catch (HttpResponseException $e) {
return $e->getResponse();
}
}
/**
* Call a controller based route.
*
* @param array $routeInfo
* @return mixed
*/
protected function callControllerAction($routeInfo)
{
$uses = $routeInfo[1]['uses'];
if (is_string($uses) && ! Str::contains($uses, '@')) {
$uses .= '@__invoke';
}
list($controller, $method) = explode('@', $uses);
if (! method_exists($instance = $this->make($controller), $method)) {
throw new NotFoundHttpException;
}
if ($instance instanceof LumenController) {
return $this->callLumenController($instance, $method, $routeInfo);
} else {
return $this->callControllerCallable(
[$instance, $method], $routeInfo[2]
);
}
}
/**
* Send the request through a Lumen controller.
*
* @param mixed $instance
* @param string $method
* @param array $routeInfo
* @return mixed
*/
protected function callLumenController($instance, $method, $routeInfo)
{
$middleware = $instance->getMiddlewareForMethod($method);
if (count($middleware) > 0) {
return $this->callLumenControllerWithMiddleware(
$instance, $method, $routeInfo, $middleware
);
} else {
return $this->callControllerCallable(
[$instance, $method], $routeInfo[2]
);
}
}
/**
* Send the request through a set of controller middleware.
*
* @param mixed $instance
* @param string $method
* @param array $routeInfo
* @param array $middleware
* @return mixed
*/
protected function callLumenControllerWithMiddleware($instance, $method, $routeInfo, $middleware)
{
$middleware = $this->gatherMiddlewareClassNames($middleware);
return $this->sendThroughPipeline($middleware, function () use ($instance, $method, $routeInfo) {
return $this->callControllerCallable([$instance, $method], $routeInfo[2]);
});
}
/**
* Call a controller callable and return the response.
*
* @param callable $callable
* @param array $parameters
* @return \Illuminate\Http\Response
*/
protected function callControllerCallable(callable $callable, array $parameters = [])
{
try {
return $this->prepareResponse(
$this->call($callable, $parameters)
);
} catch (HttpResponseException $e) {
return $e->getResponse();
}
}
/**
* Gather the full class names for the middleware short-cut string.
*
* @param string $middleware
* @return array
*/
protected function gatherMiddlewareClassNames($middleware)
{
$middleware = is_string($middleware) ? explode('|', $middleware) : (array) $middleware;
return array_map(function ($name) {
list($name, $parameters) = array_pad(explode(':', $name, 2), 2, null);
return array_get($this->routeMiddleware, $name, $name).($parameters ? ':'.$parameters : '');
}, $middleware);
}
/**
* Send the request through the pipeline with the given callback.
*
* @param array $middleware
* @param \Closure $then
* @return mixed
*/
protected function sendThroughPipeline(array $middleware, Closure $then)
{
if (count($middleware) > 0 && ! $this->shouldSkipMiddleware()) {
return (new Pipeline($this))
->send($this->make('request'))
->through($middleware)
->then($then);
}
return $then();
}
/**
* Prepare the response for sending.
*
* @param mixed $response
* @return Response
*/
public function prepareResponse($response)
{
if ($response instanceof PsrResponseInterface) {
$response = (new HttpFoundationFactory)->createResponse($response);
} elseif (! $response instanceof SymfonyResponse) {
$response = new Response($response);
} elseif ($response instanceof BinaryFileResponse) {
$response = $response->prepare(Request::capture());
}
return $response;
}
/**
* Get the raw routes for the application.
*
* @return array
*/
public function getRoutes()
{
return $this->routes;
}
/**
* Determines whether middleware should be skipped during request.
*
* @return bool
*/
protected function shouldSkipMiddleware()
{
return $this->bound('middleware.disable') && $this->make('middleware.disable') === true;
}
}