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.
52 lines
1.7 KiB
C
52 lines
1.7 KiB
C
#ifndef _MODUTIL_H
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#define _MODUTIL_H
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/*
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* This file is distributed as part of MaxScale from MariaDB Corporation. 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 2014
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*/
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/**
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* @file modutil.h A set of useful routines for module writers
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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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* 04/06/14 Mark Riddoch Initial implementation
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* 24/06/14 Mark Riddoch Add modutil_MySQL_Query to enable multipacket queries
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* 24/10/14 Massimiliano Pinto Add modutil_send_mysql_err_packet to send a mysql ERR_Packet
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*
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* @endverbatim
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*/
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#include <buffer.h>
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#include <dcb.h>
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extern int modutil_is_SQL(GWBUF *);
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extern int modutil_extract_SQL(GWBUF *, char **, int *);
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extern int modutil_MySQL_Query(GWBUF *, char **, int *, int *);
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extern GWBUF *modutil_replace_SQL(GWBUF *, char *);
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extern char *modutil_get_query(GWBUF* buf);
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extern int modutil_send_mysql_err_packet(DCB *, int, int, int, const char *, const char *);
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GWBUF *modutil_create_mysql_err_msg(
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int packet_number,
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int affected_rows,
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int merrno,
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const char *statemsg,
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const char *msg);
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#endif
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