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MXS-1275: Add client protocol data to MXS_SESSION

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The current sql mode will be tracked in that variable. Since one
thread will handle multiple sessions, we need to track the sql mode
of a session, so that the sql mode of the query classifier can be
set whenever we handle a request of a particular session.

As the sql-mode will be managed by the client protocol, the data
can be private to it as well.
This commit is contained in:
Johan Wikman 2017-06-02 15:53:48 +03:00
parent 51452ecb3b
commit 25314b6662
2 changed files with 16 additions and 15 deletions
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29
include/maxscale/session.h
View File

@ -126,20 +126,21 @@ typedef struct mxs_upstream
typedef struct session
{
skygw_chk_t ses_chk_top;
mxs_session_state_t state; /*< Current descriptor state */
size_t ses_id; /*< Unique session identifier */
struct dcb *client_dcb; /*< The client connection */
void *router_session; /*< The router instance data */
MXS_SESSION_STATS stats; /*< Session statistics */
struct service *service; /*< The service this session is using */
int n_filters; /*< Number of filter sessions */
SESSION_FILTER *filters; /*< The filters in use within this session */
MXS_DOWNSTREAM head; /*< Head of the filter chain */
MXS_UPSTREAM tail; /*< The tail of the filter chain */
int refcount; /*< Reference count on the session */
bool ses_is_child; /*< this is a child session */
mxs_session_trx_state_t trx_state; /*< The current transaction state. */
bool autocommit; /*< Whether autocommit is on. */
mxs_session_state_t state; /*< Current descriptor state */
size_t ses_id; /*< Unique session identifier */
struct dcb *client_dcb; /*< The client connection */
void *router_session; /*< The router instance data */
MXS_SESSION_STATS stats; /*< Session statistics */
struct service *service; /*< The service this session is using */
int n_filters; /*< Number of filter sessions */
SESSION_FILTER *filters; /*< The filters in use within this session */
MXS_DOWNSTREAM head; /*< Head of the filter chain */
MXS_UPSTREAM tail; /*< The tail of the filter chain */
int refcount; /*< Reference count on the session */
bool ses_is_child; /*< this is a child session */
mxs_session_trx_state_t trx_state; /*< The current transaction state. */
bool autocommit; /*< Whether autocommit is on. */
intptr_t client_protocol_data; /*< Owned and managed by the client protocol. */
struct
{
GWBUF *buffer; /**< Buffer containing the statement */

2
server/core/maxscale/session.h
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@ -27,7 +27,7 @@ MXS_BEGIN_DECLS
#define SESSION_INIT {.ses_chk_top = CHK_NUM_SESSION, \
.stats = SESSION_STATS_INIT, .head = MXS_DOWNSTREAM_INIT, .tail = MXS_UPSTREAM_INIT, \
.state = SESSION_STATE_ALLOC, .ses_chk_tail = CHK_NUM_SESSION}
.state = SESSION_STATE_ALLOC, .client_protocol_data = 0, .ses_chk_tail = CHK_NUM_SESSION}
#define SESSION_PROTOCOL(x, type) DCB_PROTOCOL((x)->client_dcb, type)