public static Processer parse(JSONObject o){
Processer result=null;
String id=o.getString("id");
if("download".equals(id)){
result= new DownloadProcesser();
}else if("zookeeper".equalsIgnoreCase(id)){
result=new ZooKeeperProcesser();
result.parse(o.getString("config"));
}else if("mail".equalsIgnoreCase(id)){
result=new MailProcesser();