/**
* {@inheritdoc}
*/
public function update($key, callable $modifier, $ttl = 0)
{
$this->redis->watch($key);
$data = $this->redis->get($key);
if ($data === false) {
$this->redis->unwatch();
return false;
} else {
$modifier($data);
if ($this->setInTransaction($key, $data, (int) $ttl)) {
return $data;
}
}
throw new AtomicViolationException("Atomic violation occurred when updating key \"{$key}\".");
}
/**
* Turns a key array into a key string. This includes running the indexing functions used to manage the Redis
* hierarchical storage.
*
* When requested the actual path, rather than a normalized value, is returned.
*
* @param array $key
* @param bool $path
* @return string
*/
protected function makeKeyString($key, $path = false)
{
$key = \Stash\Utilities::normalizeKeys($key);
$keyString = 'cache:::';
$pathKey = ':pathdb::';
foreach ($key as $name) {
//a. cache:::name
//b. cache:::name0:::sub
$keyString .= $name;
//a. :pathdb::cache:::name
//b. :pathdb::cache:::name0:::sub
$pathKey = ':pathdb::' . $keyString;
$pathKey = md5($pathKey);
if (isset($this->keyCache[$pathKey])) {
$index = $this->keyCache[$pathKey];
} else {
$index = $this->redis->get($pathKey);
$this->keyCache[$pathKey] = $index;
}
//a. cache:::name0:::
//b. cache:::name0:::sub1:::
$keyString .= '_' . $index . ':::';
}
return $path ? $pathKey : md5($keyString);
}
