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MXS-1929: Store filters inside Session

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The Session now holds a reference to the filters it uses. This makes the
use of filters safe even if they are destroyed mid-session.
This commit is contained in:
Markus Mäkelä
2018-08-03 12:55:17 +03:00
parent 7e64d6b3df
commit 2e60d5fd71
3 changed files with 133 additions and 136 deletions
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13
include/maxscale/session.h
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@ -90,17 +90,6 @@ typedef struct
time_t connect; /**< Time when the session was started */
} MXS_SESSION_STATS;
/**
* Structure used to track the filter instances and sessions of the filters
* that are in use within a session.
*/
typedef struct
{
struct mxs_filter_def *filter;
struct mxs_filter *instance;
struct mxs_filter_session *session;
} SESSION_FILTER;
/**
* The downstream element in the filter chain. This may refer to
* another filter or to a router.
@ -184,8 +173,6 @@ typedef struct session
struct mxs_router_session *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 */