/**
* Removes items from the cache by conditions & garbage collector.
* @param array conditions
* @return void
*/
public function clean(array $conditions)
{
if (!empty($conditions[Cache::ALL])) {
$this->memcache->flush();
} elseif ($this->journal) {
foreach ($this->journal->clean($conditions) as $entry) {
$this->memcache->delete($entry, 0);
}
}
}
/**
* Removes items from the cache by conditions & garbage collector.
* @param array conditions
* @return void
*/
public function clean(array $conds)
{
$all = !empty($conds[Cache::ALL]);
$collector = empty($conds);
// cleaning using file iterator
if ($all || $collector) {
$now = time();
foreach (Nette\Utils\Finder::find('*')->from($this->dir)->childFirst() as $entry) {
$path = (string) $entry;
if ($entry->isDir()) { // collector: remove empty dirs
@rmdir($path); // @ - removing dirs is not necessary
continue;
}
if ($all) {
$this->delete($path);
} else { // collector
$meta = $this->readMetaAndLock($path, LOCK_SH);
if (!$meta) {
continue;
}
if (!empty($meta[self::META_EXPIRE]) && $meta[self::META_EXPIRE] < $now) {
$this->delete($path, $meta[self::HANDLE]);
continue;
}
flock($meta[self::HANDLE], LOCK_UN);
fclose($meta[self::HANDLE]);
}
}
if ($this->journal) {
$this->journal->clean($conds);
}
return;
}
// cleaning using journal
if ($this->journal) {
foreach ($this->journal->clean($conds) as $file) {
$this->delete($file);
}
}
}
/**
* Removes items from the cache by conditions & garbage collector.
*
* @param array $conds
*
* @return void
*/
public function clean(array $conds)
{
// cleaning using file iterator
if (!empty($conds[Cache::ALL])) {
if ($keys = $this->client->send('keys', [self::NS_NETTE . ':*'])) {
$this->client->send('del', $keys);
}
if ($this->journal) {
$this->journal->clean($conds);
}
return;
}
// cleaning using journal
if ($this->journal) {
if ($keys = $this->journal->clean($conds, $this)) {
$this->client->send('del', $keys);
}
}
}
/**
* Writes item into the cache.
*
* @param string key
* @param mixed data
* @param array dependencies
*
* @return void
*/
public function write($key, $data, array $dp)
{
$meta = array(self::META_TIME => microtime());
if (isset($dp[Cache::EXPIRATION])) {
if (empty($dp[Cache::SLIDING])) {
$meta[self::META_EXPIRE] = $dp[Cache::EXPIRATION] + time();
// absolute time
} else {
$meta[self::META_DELTA] = (int) $dp[Cache::EXPIRATION];
// sliding time
}
}
if (isset($dp[Cache::ITEMS])) {
foreach ((array) $dp[Cache::ITEMS] as $item) {
$depFile = $this->getCacheFile($item);
$m = $this->readMetaAndLock($depFile, LOCK_SH);
$meta[self::META_ITEMS][$depFile] = $m[self::META_TIME];
// may be NULL
unset($m);
}
}
if (isset($dp[Cache::CALLBACKS])) {
$meta[self::META_CALLBACKS] = $dp[Cache::CALLBACKS];
}
if (!isset($this->locks[$key])) {
$this->lock($key);
if (!isset($this->locks[$key])) {
return;
}
}
$handle = $this->locks[$key];
unset($this->locks[$key]);
$cacheFile = $this->getCacheFile($key);
if (isset($dp[Cache::TAGS]) || isset($dp[Cache::PRIORITY])) {
if (!$this->journal) {
throw new Nette\InvalidStateException('CacheJournal has not been provided.');
}
$this->journal->write($cacheFile, $dp);
}
ftruncate($handle, 0);
if (!is_string($data)) {
$data = serialize($data);
$meta[self::META_SERIALIZED] = true;
}
$head = serialize($meta) . '?>';
$head = '<?php //netteCache[01]' . str_pad((string) strlen($head), 6, '0', STR_PAD_LEFT) . $head;
$headLen = strlen($head);
$dataLen = strlen($data);
do {
if (fwrite($handle, str_repeat("", $headLen), $headLen) !== $headLen) {
break;
}
if (fwrite($handle, $data, $dataLen) !== $dataLen) {
break;
}
fseek($handle, 0);
if (fwrite($handle, $head, $headLen) !== $headLen) {
break;
}
flock($handle, LOCK_UN);
fclose($handle);
return;
} while (false);
$this->delete($cacheFile, $handle);
}
