/**
* 静态方法, 单例统一访问入口
* @return object 返回对象的唯一实例
*/
public static function getInstance()
{
if (is_null(self::$_instance) || !isset(self::$_instance)) {
self::$_instance = new self();
}
return self::$_instance;
}
/**
* 检查存储节点状态
* @param string $host
* @return int
*/
public function checkNodeStatus($host)
{
$url = $host . '/api.php';
$data = array('route' => "store/status", 'callback_url' => PluginMiniStoreOption::getInstance()->getMiniyunHost() . "info.htm");
$http = new HttpClient();
$http->post($url, $data);
$result = $http->get_body();
$result = @json_decode($result, true);
if ($result["status"] == "1") {
return 1;
}
return -1;
}
/**
* 为前30个文件生成冗余备份任务
* 并把任务推送到备份服务器
* @param int $limit
* @return int
*/
public function replicateFile($limit = 30)
{
$miniHost = PluginMiniStoreOption::getInstance()->getMiniyunHost();
$criteria = new CDbCriteria();
$criteria->condition = "replicate_status=0";
$criteria->limit = $limit;
$criteria->offset = 0;
$versions = FileVersion::model()->findAll($criteria);
$fileCount = 0;
foreach ($versions as $version) {
//设置replicate_status=1
$signature = $version->file_signature;
$version->replicate_status = 1;
$version->save();
//为其它节点生成冗余备份记录
$nodes = PluginMiniStoreNode::getInstance()->getReplicateNodes($signature);
foreach ($nodes as $node) {
$task = ReplicateTask::model()->find("file_signature=:file_signature and node_id=:node_id", array("file_signature" => $signature, "node_id" => $node["id"]));
if (!isset($task)) {
$task = new ReplicateTask();
$task->file_signature = $signature;
$task->node_id = $node["id"];
$task->status = 0;
$task->save();
$this->pushReplicateTask($miniHost, $task);
$fileCount++;
}
}
}
return $fileCount;
}
