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Remove BACKEND structure from readwritesplit

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The BACKEND structure is no longer created for the instance. This allows
sessions to dynamically create new servers.
This commit is contained in:
Markus Makela
2016-11-03 12:00:33 +02:00
parent a097204c70
commit a163e31b9a
8 changed files with 135 additions and 225 deletions
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25
server/modules/routing/readwritesplit/readwritesplit.h
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@ -199,27 +199,6 @@ typedef struct sescmd_cursor_st
#endif
} sescmd_cursor_t;
/**
* Internal structure used to define the set of backend servers we are routing
* connections to. This provides the storage for routing module specific data
* that is required for each of the backend servers.
*
* Owned by router_instance, referenced by each routing session.
*/
typedef struct backend_st
{
#if defined(SS_DEBUG)
skygw_chk_t be_chk_top;
#endif
SERVER* backend_server; /*< The server itself */
int backend_conn_count; /*< Number of connections to the server */
bool be_valid; /*< Valid when belongs to the router's configuration */
int weight; /*< Desired weighting on the load. Expressed in .1% increments */
#if defined(SS_DEBUG)
skygw_chk_t be_chk_tail;
#endif
} BACKEND;
/**
* Reference to BACKEND.
*
@ -230,7 +209,7 @@ typedef struct backend_ref_st
#if defined(SS_DEBUG)
skygw_chk_t bref_chk_top;
#endif
BACKEND* bref_backend;
SERVER_REF* ref;
DCB* bref_dcb;
bref_state_t bref_state;
int bref_num_result_wait;
@ -348,8 +327,6 @@ typedef struct router_instance
SERVICE* service; /*< Pointer to service */
ROUTER_CLIENT_SES* connections; /*< List of client connections */
SPINLOCK lock; /*< Lock for the instance data */
BACKEND** servers; /*< Backend servers */
BACKEND* master; /*< NULL or pointer */
rwsplit_config_t rwsplit_config; /*< expanded config info from SERVICE */
int rwsplit_version; /*< version number for router's config */
ROUTER_STATS stats; /*< Statistics for this router */