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Make session state change tracking conditional

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By making it conditional, we prevent the problems that arise when the
replication protocol is used in combination with the session state change
tracking. In addition to this, it prevents unnecessary work for routers
and filters that don't need it.
This commit is contained in:
Markus Mäkelä
2018-03-15 11:36:32 +02:00
parent f525822472
commit 20c5ca1619
4 changed files with 26 additions and 13 deletions
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16
include/maxscale/routing.h
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@ -39,20 +39,22 @@ MXS_BEGIN_DECLS
typedef enum routing_capability
{
/**< Statements are delivered one per buffer. */
RCAP_TYPE_STMT_INPUT = 0x0001, /* 0b0000000000000001 */
RCAP_TYPE_STMT_INPUT = 0x0001, /* 0b0000000000000001 */
/**< Each delivered buffer is contiguous; implies RCAP_TYPE_STMT_INPUT. */
RCAP_TYPE_CONTIGUOUS_INPUT = 0x0003, /* 0b0000000000000011 */
RCAP_TYPE_CONTIGUOUS_INPUT = 0x0003, /* 0b0000000000000011 */
/**< The transaction state and autocommit mode of the session are tracked;
implies RCAP_TYPE_CONTIGUOUS_INPUT and RCAP_TYPE_STMT_INPUT. */
RCAP_TYPE_TRANSACTION_TRACKING = 0x0007, /* 0b0000000000000111 */
RCAP_TYPE_TRANSACTION_TRACKING = 0x0007, /* 0b0000000000000111 */
/**< Responses are delivered one per buffer. */
RCAP_TYPE_STMT_OUTPUT = 0x0010, /* 0b0000000000010000 */
RCAP_TYPE_STMT_OUTPUT = 0x0010, /* 0b0000000000010000 */
/**< Each delivered buffer is contiguous; implies RCAP_TYPE_STMT_OUTPUT. */
RCAP_TYPE_CONTIGUOUS_OUTPUT = 0x0030, /* 0b0000000000110000 */
RCAP_TYPE_CONTIGUOUS_OUTPUT = 0x0030, /* 0b0000000000110000 */
/** Result sets are delivered in one buffer; implies RCAP_TYPE_STMT_OUTPUT. */
RCAP_TYPE_RESULTSET_OUTPUT = 0x0050, /* 0b0000000001110000 */
RCAP_TYPE_RESULTSET_OUTPUT = 0x0050, /* 0b0000000001110000 */
/** Results are delivered as a set of complete packets */
RCAP_TYPE_PACKET_OUTPUT = 0x0080, /* 0b0000000010000000 */
RCAP_TYPE_PACKET_OUTPUT = 0x0080, /* 0b0000000010000000 */
/** Track session state changes, implies packet output */
RCAP_TYPE_SESSION_STATE_TRACKING = 0x0180, /* 0b0000000011000000 */
} mxs_routing_capability_t;