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Added support for session commands to readwrite split router.

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Added support for multi-statement packets.

This is an intermediate commit to save work. Code is not cleaned and there are debug prints and prototypes to be removed.
This commit is contained in:
VilhoRaatikka
2014-03-07 20:53:33 +02:00
parent 3e111534a1
commit c28892323a
10 changed files with 921 additions and 471 deletions
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33
server/modules/include/readwritesplit.h
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@ -46,12 +46,19 @@ typedef struct router_client_session ROUTER_CLIENT_SES;
typedef enum rses_property_type_t {
RSES_PROP_TYPE_UNDEFINED=0,
RSES_PROP_TYPE_FIRST,
RSES_PROP_TYPE_SESCMD=RSES_PROP_TYPE_FIRST,
RSES_PROP_TYPE_SESCMD,
RSES_PROP_TYPE_FIRST = RSES_PROP_TYPE_SESCMD,
RSES_PROP_TYPE_LAST=RSES_PROP_TYPE_SESCMD,
RSES_PROP_TYPE_COUNT=RSES_PROP_TYPE_LAST+1
} rses_property_type_t;
typedef enum backend_type_t {
BE_UNDEFINED=-1,
BE_MASTER,
BE_SLAVE,
BE_COUNT
} backend_type_t;
/**
* Session variable command
*/
@ -59,9 +66,9 @@ 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 */
// ROUTER_CLIENT_SES* my_sescmd_rsession; /*< parent router session */
rses_property_t* my_sescmd_prop; /*< parent property */
GWBUF* my_sescmd_buf; /*< client query reference */
GWBUF* my_sescmd_buf; /*< query buffer */
bool my_sescmd_is_replied; /*< is cmd replied to client */
#if defined(SS_DEBUG)
skygw_chk_t my_sescmd_chk_tail;
@ -76,7 +83,8 @@ struct rses_property_st {
#if defined(SS_DEBUG)
skygw_chk_t rses_prop_chk_top;
#endif
SPINLOCK rses_prop_lock; /*< protect property content */
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 {
@ -90,18 +98,13 @@ struct rses_property_st {
};
typedef struct sescmd_cursor_st {
rses_property_t** scmd_cur_ptr_property; /*< address of pointer to owner property */
mysql_sescmd_t* scmd_cur_cmd; /*< pointer to current session command */
bool scmd_cur_active; /*< true if command is being executed */
ROUTER_CLIENT_SES* scmd_cur_rses; /*< pointer to owning router session */
rses_property_t** scmd_cur_ptr_property; /*< address of pointer to owner property */
mysql_sescmd_t* scmd_cur_cmd; /*< pointer to current session command */
bool scmd_cur_active; /*< true if command is being executed */
backend_type_t scmd_cur_be_type; /*< BE_MASTER or BE_SLAVE */
} sescmd_cursor_t;
typedef enum backend_type_t {
BE_UNDEFINED=-1,
BE_MASTER,
BE_SLAVE,
BE_COUNT
} backend_type_t;
/**
* The client session structure used within this router.
*/