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<?php
namespace Youshido\GraphQL\Execution\ErrorHandler;
use Youshido\GraphQL\Exception\InvalidErrorHandlerMiddlewareException;
use Youshido\GraphQL\Execution\Context\ExecutionContext;
class ErrorHandler
{
/**
* @var callable
*/
private $middlewareChain;
* @param ErrorHandlerMiddlewareInterface[] $middleware
public function __construct(array $middleware)
$this->middlewareChain = $this->createExecutionChain($middleware);
}
public function handle($error, ExecutionContext $executionContext)
$middlewareChain = $this->middlewareChain;
return $middlewareChain($error, $executionContext);
private function createExecutionChain($middlewareList)
$lastCallable = function () {}; // Last callable is a NO-OP
while ($middleware = array_pop($middlewareList)) {
if (! $middleware instanceof ErrorHandlerMiddlewareInterface) {
throw InvalidErrorHandlerMiddlewareException::forMiddleware($middleware);
$lastCallable = function ($error, ExecutionContext $executionContext) use ($middleware, $lastCallable) {
return $middleware->execute($error, $executionContext, $lastCallable);
};
return $lastCallable;
Youshido /
GraphQL
