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MXS-2196: Always allocate a session

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Whenever a client DCB is accepted, a session for it is allocated. This
simplifies the handling of shared data between DCBs by allowing it to be
placed inside the session object. Currently, the data is stashed away in
the client DCB.
This commit is contained in:
Markus Mäkelä
2018-12-03 09:10:57 +02:00
parent 180e150ba1
commit da9816b7e7
9 changed files with 27 additions and 69 deletions
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20
include/maxscale/session.hh
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@ -282,27 +282,16 @@ bool session_route_reply(MXS_SESSION* session, GWBUF* buffer);
/**
* Allocate a new session for a new client of the specified service.
*
* Create the link to the router session by calling the newSession
* entry point of the router using the router instance of the
* service this session is part of.
* The start_session function needs to be called after the user authentication is done. This will
* trigger the creation of router and filter sessions.
*
* @param service The service this connection was established by
* @param client_dcb The client side DCB
*
* @return The newly created session or NULL if an error occurred
*/
MXS_SESSION* session_alloc(SERVICE*, DCB*);
/**
* A version of session_alloc() which takes the session id number as parameter.
* The id should have been generated with session_get_next_id().
*
* @param service The service this connection was established by
* @param client_dcb The client side DCB
* @param id Id for the new session.
* @return The newly created session or NULL if an error occurred
*/
MXS_SESSION* session_alloc_with_id(SERVICE*, DCB*, uint64_t);
/**
* Start the session
*
@ -310,11 +299,10 @@ MXS_SESSION* session_alloc_with_id(SERVICE*, DCB*, uint64_t);
* sessions.
*
* @param session Session to start
* @param service The service where the session is started
*
* @return True if session was started successfully
*/
bool session_start(MXS_SESSION* session, SERVICE* service);
bool session_start(MXS_SESSION* session);
MXS_SESSION* session_set_dummy(DCB*);