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<?php |
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namespace Psr7Middlewares\Middleware; |
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use Psr7Middlewares\Utils; |
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use Psr\Http\Message\RequestInterface; |
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use Psr\Http\Message\ResponseInterface; |
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use Psr\Http\Message\StreamInterface; |
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/** |
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* Middleware to save the response into a file. |
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*/ |
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class SaveResponse |
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{ |
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use Utils\CacheTrait; |
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use Utils\FileTrait; |
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/** |
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* Execute the middleware. |
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* |
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* @param RequestInterface $request |
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* @param ResponseInterface $response |
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* @param callable $next |
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* |
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* @return ResponseInterface |
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*/ |
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public function __invoke(RequestInterface $request, ResponseInterface $response, callable $next) |
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{ |
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$response = $next($request, $response); |
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if ( |
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$this->testBasePath($request->getUri()->getPath()) |
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&& empty($request->getUri()->getQuery()) |
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&& self::isCacheable($request, $response) |
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) { |
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$path = $this->getFilename($request); |
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//if it's gz compressed, append .gz |
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if (strtolower($response->getHeaderLine('Content-Encoding')) === 'gzip') { |
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$path .= '.gz'; |
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} |
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self::writeStream($response->getBody(), $path); |
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} |
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return $response; |
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} |
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/** |
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* Write the stream to the given path. |
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* |
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* @param StreamInterface $stream |
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* @param string $path |
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*/ |
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private static function writeStream(StreamInterface $stream, $path) |
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{ |
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$dir = dirname($path); |
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if (!is_dir($dir)) { |
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mkdir($dir, 0777, true); |
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} |
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$handle = fopen($path, 'wb+'); |
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if (false === $handle) { |
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throw new RuntimeException('Unable to write to designated path'); |
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} |
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$stream->rewind(); |
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while (!$stream->eof()) { |
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fwrite($handle, $stream->read(4096)); |
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} |
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fclose($handle); |
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} |
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} |
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oscarotero /
psr7-middlewares
