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get session transation state from backend via session track mechanism

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This commit is contained in:
Dapeng Huang
2018-01-14 12:23:38 +08:00
parent 27e563dcff
commit e1aeac8b07
16 changed files with 231 additions and 32 deletions
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17
include/maxscale/protocol/mysql.h
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@ -118,6 +118,20 @@ MXS_BEGIN_DECLS
#define COM_QUIT_PACKET_SIZE (4+1)
struct dcb;
typedef enum
{
TX_EMPTY = 0, ///< "none of the below"
TX_EXPLICIT = 1, ///< an explicit transaction is active
TX_IMPLICIT = 2, ///< an implicit transaction is active
TX_READ_TRX = 4, ///< transactional reads were done
TX_READ_UNSAFE = 8, ///< non-transaction reads were done
TX_WRITE_TRX = 16, ///< transactional writes were done
TX_WRITE_UNSAFE = 32, ///< non-transactional writes were done
TX_STMT_UNSAFE = 64, ///< "unsafe" (non-deterministic like UUID()) stmts
TX_RESULT_SET = 128, ///< result-set was sent
TX_WITH_SNAPSHOT= 256, ///< WITH CONSISTENT SNAPSHOT was used
TX_LOCKED_TABLES= 512 ///< LOCK TABLES is active
} mysql_tx_state_t;
typedef enum
{
@ -339,6 +353,7 @@ typedef struct
int ignore_replies; /*< How many replies should be discarded */
GWBUF* stored_query; /*< Temporarily stored queries */
bool collect_result; /*< Collect the next result set as one buffer */
bool session_track_trx_state; /*< Get transation state from backend */
#if defined(SS_DEBUG)
skygw_chk_t protocol_chk_tail;
#endif
@ -478,6 +493,8 @@ char* create_auth_fail_str(char *username, char *hostaddr, bool password, char *
void init_response_status(GWBUF* buf, uint8_t cmd, int* npackets, size_t* nbytes);
bool read_complete_packet(DCB *dcb, GWBUF **readbuf);
bool gw_get_shared_session_auth_info(DCB* dcb, MYSQL_session* session);
void mxs_mysql_get_session_track_info(GWBUF *buff, uint32_t server_capabilities);
mysql_tx_state_t parse_trx_state(char *str);
/**
* Decode server handshake