60536f622e
Added function poll.c:poll_add_epollin_event_to_dcb which adds given event and related GWBUF to given DCB. The DCB is then added to event queue list so that its even becomes executed as soon as any of the threads start to process events next time. The problem solved is case where COM_CHANGE_USER failed due to authentication failure. An error should be sent to the client but it was sent once per failed backend authentication instead of just once. Thread which failed in authentication bypassed router and thus replies weren't filtered out. Solution adds an event and a GWBUF including error message to DCB and the DCB is then added to event queue. Thus the error message appeares like it was an incoming event and becomes processed properly. An addition was made to mysql_backend.c:gw_read_backend_event so that self-generated event can be processed. Even if socket read doesn't manage to read anything, function proceeds if there is enough data in DCB's readqueue. Fix ti bug #602, http://bugs.mariadb.com/show_bug.cgi?id=602 Added function sescmd_response_complete which checks if the read data completes session command response packet(s). Function is called only if there's a sessoin command being executed.
48 lines
1.4 KiB
C
48 lines
1.4 KiB
C
#ifndef _POLL_H
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#define _POLL_H
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/*
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* This file is distributed as part of the MariaDB Corporation MaxScale. It is free
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* software: you can redistribute it and/or modify it under the terms of the
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* GNU General Public License as published by the Free Software Foundation,
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* version 2.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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* details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc., 51
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* Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Copyright MariaDB Corporation Ab 2013-2014
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*/
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#include <dcb.h>
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#include <gwbitmask.h>
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/**
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* @file poll.h The poll related functionality
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*
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* @verbatim
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* Revision History
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*
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* Date Who Description
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* 19/06/13 Mark Riddoch Initial implementation
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*
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* @endverbatim
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*/
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#define MAX_EVENTS 1000
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#define EPOLL_TIMEOUT 1000 /**< The epoll timeout in milliseconds */
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extern void poll_init();
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extern int poll_add_dcb(DCB *);
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extern int poll_remove_dcb(DCB *);
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extern void poll_waitevents(void *);
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extern void poll_shutdown();
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extern GWBITMASK *poll_bitmask();
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extern void dprintPollStats(DCB *);
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extern void dShowThreads(DCB *dcb);
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void poll_add_epollin_event_to_dcb(DCB* dcb, GWBUF* buf);
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#endif
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