cb6a976555
nection router stream is used and with read/write split router individual statements are passed to router. Added new function to ROUTER_OBJECT : uint8_t (*getCapabilities)(ROUTER *instance, void* router_session); which is implemented in every route r. Added support for multi-statement packets in rwsplit router. In other words, if network packet includes multiple mysql statements, they are separated and passed to router one by one. Multi-packet statements (those which exceeds network packet boundaries) are _not_ supported yet.
148 lines
3.3 KiB
C
148 lines
3.3 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 uint8_t getCapabilities (ROUTER* inst, void* router_session);
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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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NULL,
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getCapabilities
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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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static uint8_t getCapabilities(
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ROUTER* inst,
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void* router_session)
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{
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return 0;
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} |