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Edit File : AbstractSurrogateFragmentRenderer.php \| Size : 3.79 KB
<?php /* * This file is part of the Symfony package. * * (c) Fabien Potencier <fabien@symfony.com> * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. / namespace Symfony\Component\HttpKernel\Fragment; use Symfony\Component\HttpFoundation\Request; use Symfony\Component\HttpFoundation\Response; use Symfony\Component\HttpKernel\Controller\ControllerReference; use Symfony\Component\HttpKernel\HttpCache\SurrogateInterface; use Symfony\Component\HttpKernel\UriSigner; /* * Implements Surrogate rendering strategy. * * @author Fabien Potencier <fabien@symfony.com> / abstract class AbstractSurrogateFragmentRenderer extends RoutableFragmentRenderer { private $surrogate; private $inlineStrategy; private $signer; /* * The "fallback" strategy when surrogate is not available should always be an * instance of InlineFragmentRenderer. * * @param FragmentRendererInterface $inlineStrategy The inline strategy to use when the surrogate is not supported / public function __construct(SurrogateInterface $surrogate = null, FragmentRendererInterface $inlineStrategy, UriSigner $signer = null) { $this->surrogate = $surrogate; $this->inlineStrategy = $inlineStrategy; $this->signer = $signer; } /* * {@inheritdoc} * * Note that if the current Request has no surrogate capability, this method * falls back to use the inline rendering strategy. * * Additional available options: * * * alt: an alternative URI to render in case of an error * * comment: a comment to add when returning the surrogate tag * * Note, that not all surrogate strategies support all options. For now * 'alt' and 'comment' are only supported by ESI. * * @see Symfony\Component\HttpKernel\HttpCache\SurrogateInterface */ public function render($uri, Request $request, array $options = []) { if (!$this->surrogate \|\| !$this->surrogate->hasSurrogateCapability($request)) { if ($uri instanceof ControllerReference && $this->containsNonScalars($uri->attributes)) { throw new \InvalidArgumentException('Passing non-scalar values as part of URI attributes to the ESI and SSI rendering strategies is not supported. Use a different rendering strategy or pass scalar values.'); } return $this->inlineStrategy->render($uri, $request, $options); } if ($uri instanceof ControllerReference) { $uri = $this->generateSignedFragmentUri($uri, $request); } $alt = $options['alt'] ?? null; if ($alt instanceof ControllerReference) { $alt = $this->generateSignedFragmentUri($alt, $request); } $tag = $this->surrogate->renderIncludeTag($uri, $alt, $options['ignore_errors'] ?? false, $options['comment'] ?? ''); return new Response($tag); } private function generateSignedFragmentUri(ControllerReference $uri, Request $request): string { if (null === $this->signer) { throw new \LogicException('You must use a URI when using the ESI rendering strategy or set a URL signer.'); } // we need to sign the absolute URI, but want to return the path only. $fragmentUri = $this->signer->sign($this->generateFragmentUri($uri, $request, true)); return substr($fragmentUri, \strlen($request->getSchemeAndHttpHost())); } private function containsNonScalars(array $values): bool { foreach ($values as $value) { if (\is_array($value)) { return $this->containsNonScalars($value); } elseif (!is_scalar($value) && null !== $value) { return true; } } return false; } } Back

Edit File : AbstractSurrogateFragmentRenderer.php | Size : 3.79 KB

<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\HttpKernel\Fragment;

use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\HttpKernel\Controller\ControllerReference;
use Symfony\Component\HttpKernel\HttpCache\SurrogateInterface;
use Symfony\Component\HttpKernel\UriSigner;

/**
 * Implements Surrogate rendering strategy.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
abstract class AbstractSurrogateFragmentRenderer extends RoutableFragmentRenderer
{
    private $surrogate;
    private $inlineStrategy;
    private $signer;

/**
     * The "fallback" strategy when surrogate is not available should always be an
     * instance of InlineFragmentRenderer.
     *
     * @param FragmentRendererInterface $inlineStrategy The inline strategy to use when the surrogate is not supported
     */
    public function __construct(SurrogateInterface $surrogate = null, FragmentRendererInterface $inlineStrategy, UriSigner $signer = null)
    {
        $this->surrogate = $surrogate;
        $this->inlineStrategy = $inlineStrategy;
        $this->signer = $signer;
    }

/**
     * {@inheritdoc}
     *
     * Note that if the current Request has no surrogate capability, this method
     * falls back to use the inline rendering strategy.
     *
     * Additional available options:
     *
     *  * alt: an alternative URI to render in case of an error
     *  * comment: a comment to add when returning the surrogate tag
     *
     * Note, that not all surrogate strategies support all options. For now
     * 'alt' and 'comment' are only supported by ESI.
     *
     * @see Symfony\Component\HttpKernel\HttpCache\SurrogateInterface
     */
    public function render($uri, Request $request, array $options = [])
    {
        if (!$this->surrogate || !$this->surrogate->hasSurrogateCapability($request)) {
            if ($uri instanceof ControllerReference && $this->containsNonScalars($uri->attributes)) {
                throw new \InvalidArgumentException('Passing non-scalar values as part of URI attributes to the ESI and SSI rendering strategies is not supported. Use a different rendering strategy or pass scalar values.');
            }

return $this->inlineStrategy->render($uri, $request, $options);
        }

if ($uri instanceof ControllerReference) {
            $uri = $this->generateSignedFragmentUri($uri, $request);
        }

$alt = $options['alt'] ?? null;
        if ($alt instanceof ControllerReference) {
            $alt = $this->generateSignedFragmentUri($alt, $request);
        }

$tag = $this->surrogate->renderIncludeTag($uri, $alt, $options['ignore_errors'] ?? false, $options['comment'] ?? '');

return new Response($tag);
    }

private function generateSignedFragmentUri(ControllerReference $uri, Request $request): string
    {
        if (null === $this->signer) {
            throw new \LogicException('You must use a URI when using the ESI rendering strategy or set a URL signer.');
        }

// we need to sign the absolute URI, but want to return the path only.
        $fragmentUri = $this->signer->sign($this->generateFragmentUri($uri, $request, true));

return substr($fragmentUri, \strlen($request->getSchemeAndHttpHost()));
    }

private function containsNonScalars(array $values): bool
    {
        foreach ($values as $value) {
            if (\is_array($value)) {
                return $this->containsNonScalars($value);
            } elseif (!is_scalar($value) && null !== $value) {
                return true;
            }
        }

return false;
    }
}

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