#

# mscgen -T png -o lifecycle.png < lifecycle.msc

msc {

Client, Core, Plugin, Server;

# Core box Plugin [ label = "MySQL Proxy" ];

--- [ label = "connect" ];

Client -> Core [ label = "connect()" ];

Core => Plugin [ label = "connect_server()" ];

Core << Plugin [ label = "NO_DECISION" ];

Core -> Server [ label = "connect()" ];

--- [ label = "auth challenge" ];

Server -> Core [ label = "read(auth challenge packet)" ];

Core => Plugin [ label = "read_auth_handshake()" ];

Core << Plugin [ label = "NO_DECISION" ];

Core -> Client [ label = "write(auth challenge packet)" ];

--- [ label = "auth response" ];

Client -> Core [ label = "read(auth response packet)" ];

Core => Plugin [ label = "read_auth()" ];

Core << Plugin [ label = "NO_DECISION" ];

Core -> Server [ label = "write(auth response packet)" ];

--- [ label = "auth status" ];

Server -> Core [ label = "read(auth response packet)" ];

Core => Plugin [ label = "read_auth_result()" ];

Core << Plugin [ label = "NO_DECISION" ];

Core -> Client [ label = "write(auth response packet)" ];

--- [ label = "query" ];

Client -> Core [ label = "read(command packet)" ];

Core => Plugin [ label = "read_query()" ];

Core << Plugin [ label = "NO_DECISION" ];

Core -> Server [ label = "write(command packet)" ];

--- [ label = "query response" ];

Server -> Core [ label = "read(command response packet)" ];

Core => Plugin [ label = "read_query_result()" ];

Core << Plugin [ label = "NO_DECISION" ];

Core -> Client [ label = "write(command response packet)" ];

--- [ label = "disconnect" ];

Client -> Core [ label = "close()" ];

Core => Plugin [ label = "disconnect_client()" ];

Core << Plugin [ label = "ignored" ];

Core -> Server [ label = "close()" ];

}