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Router has now capability value which currently tells whether router session expects stream or individual, complete statements. With read con

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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.
This commit is contained in:
VilhoRaatikka
2014-03-11 23:12:11 +02:00
parent c28892323a
commit cb6a976555
13 changed files with 701 additions and 422 deletions
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3
server/modules/include/readwritesplit.h
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@ -66,7 +66,6 @@ typedef struct mysql_sescmd_st {
#if defined(SS_DEBUG)
skygw_chk_t my_sescmd_chk_top;
#endif
// ROUTER_CLIENT_SES* my_sescmd_rsession; /*< parent router session */
rses_property_t* my_sescmd_prop; /*< parent property */
GWBUF* my_sescmd_buf; /*< query buffer */
bool my_sescmd_is_replied; /*< is cmd replied to client */
@ -84,7 +83,6 @@ struct rses_property_st {
skygw_chk_t rses_prop_chk_top;
#endif
ROUTER_CLIENT_SES* rses_prop_rsession; /*< parent router session */
// SPINLOCK rses_prop_lock; /*< protect property content */
int rses_prop_refcount;
rses_property_type_t rses_prop_type;
union rses_prop_data {
@ -121,6 +119,7 @@ struct router_client_session {
DCB* rses_dcb[BE_COUNT];
/*< cursor is pointer and status variable to current session command */
sescmd_cursor_t rses_cursor[BE_COUNT];
int rses_capabilities; /*< input type, for example */
struct router_client_session* next;
#if defined(SS_DEBUG)
skygw_chk_t rses_chk_tail;