849a366e95
tuned error printing and log writing output format dcb.c : dcb_connect, check return value of poll_add_dcb and behave accordingly. dcb_write, in case of SIFPIPE, only write to trace log. dcb_close, dassert with incorrect dcb states. gateway.c : added file_write_header to print header similar than in logs to stderr. main, add signal handler for SIGPIPE poll.c : poll_remove_dcb, don't fail if dcb is in NOPOLLING or in ZOMBIE states. poll_waitevents, write EPOLLHUPs to trace log, don't even attempt to write to closed socket. readconnection.h : shortened comment. readwritesplit.h : replaced generic names with more specific ones. httpd.c : Check listen return value and behave accordingly. mysql_backend.c : Tiny clean up. mysql_client.c : gw_MySQLListener, Check listen return value and behave accordingly. mysql_common.c : Shortened a header. telnetd.c : telnetd_listen, check listen return value and behave accordingly. readconnroute.c : Tuned log writing format. readwritesplit.c : Added function search_backend_servers, which chooses suitable backend and master server among those known by Maxscale. Fixed clean-up routines. Not ready yet but works somehow. testroute.c : Cleanup. skygw_utils.cc : Log writing clean up.
139 lines
3.1 KiB
C
139 lines
3.1 KiB
C
/*
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* This file is distributed as part of the SkySQL Gateway. 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 SkySQL Ab 2013
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*/
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#include <stdio.h>
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#include <router.h>
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static char *version_str = "V1.0.0";
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static ROUTER *createInstance(SERVICE *service, char **options);
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static void *newSession(ROUTER *instance, SESSION *session);
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static void closeSession(ROUTER *instance, void *session);
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static void freeSession(ROUTER *instance, void *session);
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static int routeQuery(ROUTER *instance, void *session, GWBUF *queue);
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static void diagnostic(ROUTER *instance, DCB *dcb);
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static ROUTER_OBJECT MyObject = {
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createInstance,
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newSession,
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closeSession,
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freeSession,
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routeQuery,
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diagnostic,
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NULL
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};
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/**
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* Implementation of the mandatory version entry point
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*
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* @return version string of the module
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*/
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char *
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version()
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{
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return version_str;
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}
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/**
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* The module initialisation routine, called when the module
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* is first loaded.
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*/
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void
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ModuleInit()
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{
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}
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/**
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* The module entry point routine. It is this routine that
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* must populate the structure that is referred to as the
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* "module object", this is a structure with the set of
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* external entry points for this module.
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*
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* @return The module object
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*/
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ROUTER_OBJECT *
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GetModuleObject()
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{
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return &MyObject;
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}
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/**
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* Create an instance of the router for a particular service
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* within the gateway.
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*
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* @param service The service this router is being create for
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* @param options The options for this query router
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*
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* @return The instance data for this new instance
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*/
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static ROUTER *
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createInstance(SERVICE *service, char **options)
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{
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return NULL;
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}
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/**
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* Associate a new session with this instance of the router.
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*
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* @param instance The router instance data
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* @param session The session itself
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* @return Session specific data for this session
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*/
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static void *
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newSession(ROUTER *instance, SESSION *session)
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{
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return NULL;
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}
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/**
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* Close a session with the router, this is the mechanism
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* by which a router may cleanup data structure etc.
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*
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* @param instance The router instance data
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* @param session The session being closed
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*/
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static void
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closeSession(ROUTER *instance, void *session)
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{
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}
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static void freeSession(
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ROUTER* router_instance,
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void* router_client_session)
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{
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return;
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}
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static int
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routeQuery(ROUTER *instance, void *session, GWBUF *queue)
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{
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return 0;
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}
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/**
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* Diagnostics routine
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*
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* @param instance The router instance
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* @param dcb The DCB for diagnostic output
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*/
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static void
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diagnostic(ROUTER *instance, DCB *dcb)
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{
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}
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