/**
* Get file node model connection name which is related with node id
* @param $id
* @return array|false
*/
public static function getFileNodeConfig($id)
{
$nodes = static::get(static::KEY_STORAGE_NODES);
foreach ($nodes as $item) {
if ($item['id'] == $id) {
return $item;
}
}
FileException::pop("The connection for storage node {$id} is not set. Check the configuration field {" . static::KEY_STORAGE_NODES . "}");
}
/**
* Make load balance and get storage node id
* pick a storage node randomly
* @return int
*/
public function getNodeId()
{
if (Config::get(Config::KEY_LOAD_BALANCE_STRICT)) {
$this->getUsedNodes();
$nodeId = $this->pickStrictly();
} else {
$nodeId = $this->pickOneNodeRandomly();
}
if ($nodeId === false) {
FileException::pop('Fail to select storage node.');
}
return $nodeId;
}
/**
* Remove file
* @param $id string file id
* @return bool|null
*/
public function remove($id)
{
// wait if the file is locked
if (!$this->locker->lock($id)) {
FileException::pop("The file \"{$id}\" is locked. Try later.");
}
$fileMeta = new FileMeta();
$fileContainer = new FileContainer();
$fileContainer->addHandler(new StorageNodeHandler());
$fileContainer->addHandler(new NodeMetaHandler());
$fileMeta->setFileContainer($fileContainer);
$fileMeta->remove($id);
$fileContainer->dump();
$this->locker->unlock($id);
return true;
}
private function getChunkSize()
{
if (!$this->chunkSize) {
$this->chunkSize = Config::get(Config::KEY_FILE_CHUNK_SIZE);
}
if (!$this->chunkSize) {
FileException::pop('File chunk size is not set');
}
return $this->chunkSize;
}