public function forTemplate()
{
$key = $this->getKey();
$cache = $this->getCache();
$data = $cache->get($key);
if ($data && !$this->forceRegen) {
if (defined('PROXY_CACHE_GENERATING')) {
return '<!--SimpleCache::' . $key . ',FragmentCache-->';
}
return $data;
}
$data = $this->context->renderWith($this->templateName);
$data = $data->raw();
if (Versioned::current_stage() != 'Stage' && strlen($data) && !isset($_GET['flush'])) {
// $this->cache->store($key, $menu, self::CACHE_LENGTH);
// when storing for the frontend cache replacement stuff, use whatever we have
// configured
// do NOT store if we're on stage or we have _flush=1
$this->cache->store($key, $data);
}
// clear the cache key for next request
if (isset($_GET['flush'])) {
$this->cache->delete($key);
}
if (defined('PROXY_CACHE_GENERATING')) {
return '<!--SimpleCache::' . $key . ',FragmentCache-->';
}
return $data;
}
public function testClearThousands()
{
Filesystem::removeFolder(TEMP_FOLDER . '/my_test_cache');
$cache = new SimpleCache(new SimpleFileBasedCacheStore(TEMP_FOLDER . '/my_test_cache'));
for ($i = 0; $i < 1000; $i++) {
$object = new stdClass();
$object->Title = "Object {$i}";
$other = $i % 10;
$cache->store('key_' . $i, $object, -1, array('mytag', "mod{$other}"));
}
$start = microtime(true);
$cache->deleteByTag('mytag');
$end = microtime(true) - $start;
$elems = $cache->getByTag('mytag');
$this->assertEquals(0, count($elems));
}
public function generateCache($host, $url)
{
$url = $this->urlForCaching($url);
$key = "{$host}/{$url}";
define('PROXY_CACHE_GENERATING', true);
$config = $this->configForUrl($url, $host);
$expiry = isset($config['expiry']) ? $config['expiry'] : -1;
if ($expiry < 0) {
return;
}
ob_start();
include BASE_PATH . '/framework/main.php';
$toCache = new stdClass();
$toCache->Content = ob_get_clean();
$toCache->LastModified = date('Y-m-d H:i:s');
// check headers to see if we have an expires header
$headers = headers_list();
if ($headerExpiry = $this->ageFromHeaders($headers, $expiry)) {
if ($headerExpiry < $expiry && $headerExpiry != 0) {
$expiry = $headerExpiry;
}
}
$storedHeaders = $this->headersToStore($headers);
if (count($storedHeaders)) {
$toCache->Headers = $storedHeaders;
}
$toCache->Age = $expiry;
if (function_exists('http_response_code')) {
$response = http_response_code();
$this->enabled = $response >= 200 && $response < 300;
}
// see if we've got a no cache header
if (isset($storedHeaders['x-silverstripe-nocache'])) {
$this->enabled = false;
}
// store the content for this
if ($this->enabled && $this->dynamicCache && strlen($toCache->Content)) {
$tags = isset($config['tags']) ? $config['tags'] : null;
$this->dynamicCache->store($key, $toCache, $expiry, $tags);
if ($this->includeCacheHeaders) {
$this->headers[] = 'X-SilverStripe-Cache: miss-gen at ' . date('r');
}
}
$this->currentItem = $toCache;
}
public function generateCache($host, $url)
{
$key = "{$host}/{$url}";
define('PROXY_CACHE_GENERATING', true);
$config = $this->configForUrl($url);
$expiry = isset($config['expiry']) ? $config['expiry'] : -1;
if ($expiry < 0) {
return;
}
ob_start();
include BASE_PATH . '/framework/main.php';
$toCache = new stdClass();
$toCache->Content = ob_get_clean();
$toCache->LastModified = date('Y-m-d H:i:s');
$toCache->Age = $expiry;
// store the content for this
if ($this->dynamicCache && strlen($toCache->Content)) {
$tags = isset($config['tags']) ? $config['tags'] : null;
$this->dynamicCache->store($key, $toCache, $expiry, $tags);
$this->headers[] = 'X-SilverStripe-Cache: miss-gen at ' . @date('r') . ' on ' . $key;
}
$this->currentItem = $toCache;
}
