Mycat the use of several classes

Nioconnection

Serverconnection Mycat as a service-side connection to the front-end business

Backendaioconnection Mycat as a server-side connection to MySQL

All connections will be placed in the Nioreactor member RW's registerqueue, not directly registered, and then registered in the Run method.

Niohandler

A abstractconnection will maintain a niohandler

For Mycat as a service end, then Nioconnection is Serverconnection,

Niohandler is used when the authentication connection is frontendauthenticator, after the certification will be replaced by Frontendcommandhandler

For Mycat as a client with MySQL connection, nioconnection is Mysqlconnection,

Use Mysqlconnectionauthenticator before authenticating the connection and replace with Mysqlconnectionhandler after authentication

Physicaldbpool Correspondence Datahost

Physicaldatasource corresponds to the Read node or the Write node under the datahost tag