public function fetch(RequestInterface $request)
{
/** @var int|null $maxAge */
$maxAge = null;
if ($request->hasHeader('Cache-Control')) {
$reqCacheControl = new KeyValueHttpHeader($request->getHeader('Cache-Control'));
if ($reqCacheControl->has('no-cache')) {
// Can't return cache
return null;
}
$maxAge = $reqCacheControl->get('max-age', null);
} elseif ($request->hasHeader('Pragma')) {
$pragma = new KeyValueHttpHeader($request->getHeader('Pragma'));
if ($pragma->has('no-cache')) {
// Can't return cache
return null;
}
}
$cache = $this->storage->fetch($this->getCacheKey($request));
if ($cache !== null) {
if ((string) $cache->getOriginalRequest()->getUri() !== (string) $request->getUri()) {
return null;
}
if ($maxAge !== null) {
if ($cache->getAge() > $maxAge) {
// Cache entry is too old for the request requirements!
return null;
}
}
if (!$cache->isVaryEquals($request)) {
return null;
}
}
return $cache;
} public function testCacheProvider()
{
$TMP_DIR = __DIR__ . '/tmp/';
$cacheProviders = [new DoctrineCacheStorage(new ArrayCache()), new DoctrineCacheStorage(new ChainCache([new ArrayCache()])), new DoctrineCacheStorage(new FilesystemCache($TMP_DIR)), new DoctrineCacheStorage(new PhpFileCache($TMP_DIR)), new FlysystemStorage(new Local($TMP_DIR))];
$request = new Request('GET', 'test.local');
$response = new Response(200, ['Cache-Control' => 'max-age=60'], 'Test content');
/** @var CacheProvider $cacheProvider */
foreach ($cacheProviders as $cacheProvider) {
$this->rrmdir($TMP_DIR);
$cache = new PrivateCacheStrategy($cacheProvider);
$cache->cache($request, $response);
$entry = $cache->fetch($request);
$this->assertNotNull($entry);
$this->assertEquals((string) $response->getBody(), (string) $entry->getResponse()->getBody());
}
$this->rrmdir($TMP_DIR);
}
