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<?php |
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namespace Liip\ImagineBundle\Imagine\Cache\Resolver; |
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use Liip\ImagineBundle\Binary\BinaryInterface; |
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/** |
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* ProxyResolver. |
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* |
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* @author Robert Schönthal <[email protected]> |
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*/ |
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class ProxyResolver implements ResolverInterface |
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{ |
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/** |
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* @var ResolverInterface |
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*/ |
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protected $resolver; |
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/** |
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* a list of proxy hosts (picks a random one for each generation to seed browser requests among multiple hosts). |
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* |
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* @var array |
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*/ |
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protected $hosts = array(); |
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/** |
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* @param ResolverInterface $resolver |
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* @param string[] $hosts |
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*/ |
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public function __construct(ResolverInterface $resolver, array $hosts) |
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{ |
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$this->resolver = $resolver; |
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$this->hosts = $hosts; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function resolve($path, $filter) |
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{ |
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return $this->rewriteUrl($this->resolver->resolve($path, $filter)); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function store(BinaryInterface $binary, $targetPath, $filter) |
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{ |
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return $this->resolver->store($binary, $targetPath, $filter); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function isStored($path, $filter) |
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{ |
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return $this->resolver->isStored($path, $filter); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function remove(array $paths, array $filters) |
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{ |
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return $this->resolver->remove($paths, $filters); |
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} |
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/** |
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* @param $url |
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* |
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* @return string |
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*/ |
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protected function rewriteUrl($url) |
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{ |
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if (empty($this->hosts)) { |
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return $url; |
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} |
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$randKey = array_rand($this->hosts, 1); |
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// BC |
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if (is_numeric($randKey)) { |
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$host = parse_url($url, PHP_URL_SCHEME).'://'.parse_url($url, PHP_URL_HOST); |
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$proxyHost = $this->hosts[$randKey]; |
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return str_replace($host, $proxyHost, $url); |
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} |
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if (0 === strpos($randKey, 'regexp/')) { |
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$regExp = substr($randKey, 6); |
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return preg_replace($regExp, $this->hosts[$randKey], $url); |
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} |
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return str_replace($randKey, $this->hosts[$randKey], $url); |
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} |
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} |
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liip /
LiipImagineBundle
