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<?php declare(strict_types=1); |
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namespace WyriHaximus\React\Http\Middleware; |
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use Narrowspark\MimeType\MimeTypeExtensionGuesser; |
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use Psr\Http\Message\ServerRequestInterface; |
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use Psr\Log\LoggerInterface; |
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use React\Cache\ArrayCache; |
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use React\Cache\CacheInterface; |
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use RingCentral\Psr7\Response; |
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use function RingCentral\Psr7\stream_for; |
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use ScriptFUSION\Byte\ByteFormatter; |
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final class WebrootPreloadMiddleware |
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{ |
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/** @var CacheInterface */ |
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private $cache; |
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public function __construct(string $webroot, LoggerInterface $logger = null, CacheInterface $cache = null) |
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{ |
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$this->cache = $cache ?? new ArrayCache(); |
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$totalSize = 0; |
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$count = 0; |
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$byteFormatter = (new ByteFormatter())->setPrecision(2)->setFormat('%v%u'); |
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$directory = new \RecursiveDirectoryIterator($webroot); |
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$directory = new \RecursiveIteratorIterator($directory); |
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$directory = \iterator_to_array($directory); |
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\usort($directory, function ($a, $b) { |
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return $a->getPathname() <=> $b->getPathname(); |
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}); |
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foreach ($directory as $fileinfo) { |
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if (!$fileinfo->isFile()) { |
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continue; |
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} |
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$filePath = \str_replace( |
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[ |
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$webroot, |
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\DIRECTORY_SEPARATOR, |
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'//', |
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], |
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[ |
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\DIRECTORY_SEPARATOR, |
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'/', |
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'/', |
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], |
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$fileinfo->getPathname() |
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); |
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$item = [ |
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'contents' => \file_get_contents($fileinfo->getPathname()), |
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]; |
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$item['etag'] = \md5($item['contents']) . '-' . \filesize($fileinfo->getPathname()); |
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$mime = MimeTypeExtensionGuesser::guess($fileinfo->getExtension()); |
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if (\is_null($mime)) { |
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$mime = 'application/octet-stream'; |
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} |
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list($mime) = \explode(';', $mime); |
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if (\strpos($mime, '/') !== false) { |
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$item['mime'] = $mime; |
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} |
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$this->cache->set($filePath, $item); |
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$count++; |
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if ($logger instanceof LoggerInterface) { |
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$fileSize = \strlen($item['contents']); |
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$totalSize += $fileSize; |
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$logger->debug($filePath . ': ' . $byteFormatter->format($fileSize) . ' (' . $item['mime'] . ')'); |
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} |
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} |
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if ($logger instanceof LoggerInterface) { |
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$logger->info('Preloaded ' . $count . ' file(s) with a combined size of ' . $byteFormatter->format($totalSize) . ' from "' . $webroot . '" into memory'); |
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} |
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} |
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public function __invoke(ServerRequestInterface $request, callable $next) |
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{ |
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$path = $request->getUri()->getPath(); |
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return $this->cache->get($path)->then(function ($item) use ($next, $request) { |
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if ($item === null) { |
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return $next($request); |
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} |
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if ($request->hasHeader('If-None-Match')) { |
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$etag = \current($request->getHeader('If-None-Match')); |
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$etag = \trim($etag, '"'); |
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if ($etag === $item['etag']) { |
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return new Response(304); |
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} |
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} |
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if ($request->hasHeader('If-Match')) { |
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$expectedEtag = \current($request->getHeader('If-Match')); |
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$expectedEtag = \trim($expectedEtag, '"'); |
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if ($expectedEtag !== $item['etag']) { |
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return new Response(412); |
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} |
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} |
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$response = (new Response(200))-> |
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withBody(stream_for($item['contents']))-> |
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withHeader('ETag', '"' . $item['etag'] . '"') |
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; |
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if (!isset($item['mime'])) { |
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return $response; |
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} |
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return $response->withHeader('Content-Type', $item['mime']); |
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}); |
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} |
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} |
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WyriHaximus /
reactphp-http-middleware-webroot-preload
