Psr7Middlewares\Middleware\ErrorHandler

Complexity

Total Complexity

7

Size/Duplication

Total Lines	70
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	2

Importance

Changes	18
Bugs	2	Features	4

3 Methods

Rating	Name	Duplication	Size	Complexity
A	getException()	0	4	1
A	catchExceptions()	0	6	1
B	__invoke()	0	23	5

<?php

namespace Psr7Middlewares\Middleware;

use Psr7Middlewares\Utils;
use Psr7Middlewares\Middleware;
use Psr\Http\Message\ServerRequestInterface;
use Psr\Http\Message\ResponseInterface;

/**
 * Middleware to handle php errors and exceptions.
 */
class ErrorHandler
{
    const KEY = 'EXCEPTION';

    use Utils\HandlerTrait;

    /**
     * @var bool Whether or not catch exceptions
     */
    private $catchExceptions = false;

    /**
     * Returns the exception throwed.
     *
     * @param ServerRequestInterface $request
     *
     * @return \Exception|null
     */
    public static function getException(ServerRequestInterface $request)
    {
        return Middleware::getAttribute($request, self::KEY);
    }

    /**
     * Configure the catchExceptions.
     *
     * @param bool $catch
     *
     * @return self
     */
    public function catchExceptions($catch = true)
    {
        $this->catchExceptions = (boolean) $catch;

        return $this;
    }

    /**
     * Execute the middleware.
     *
     * @param ServerRequestInterface $request
     * @param ResponseInterface      $response
     * @param callable               $next
     *
     * @return ResponseInterface
     */
    public function __invoke(ServerRequestInterface $request, ResponseInterface $response, callable $next)
    {
        ob_start();

        try {
            $response = $next($request, $response);
        } catch (\Exception $exception) {
            if (!$this->catchExceptions) {
                throw $exception;
            }

            $request = Middleware::setAttribute($request, self::KEY, $exception);
            $response = $response->withStatus(500);
        }

        ob_end_clean();

        if ($response->getStatusCode() >= 400 && $response->getStatusCode() < 600) {
            return $this->executeHandler($request, $response);
        }

        return $response;
    }
}