hcq/MaxScale
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

MAX-157. Added support for hints in rwsplit router.

Browse Source 
buffer.c: added memory release for hint of a GWBUF
hint.c: added bool hint_exists()
hint.h: added placeholder for hint type HINT_ROUTE_TO_ALL which doesn't have implementation yet.
filter/Makefile: fixed dependency issue
hintparser.c: added const char* token_get_keyword(), hint_parser:added NULL check, hint_next_token: fixed off-by-one bug
readwritesplit.h: added bitfield for hints' use, which includes route targets and flag for case where user hinted to route to named backend server.
readwritesplit.c: added function route_target_t get_route_target() for resolving route target based on 1) query type (from query_classifier) 2) transaction state (active/not) and 3) hints. Modified get_dcb, which is called in routeQuery to provide pointer to correct backend DCB. Now get_dcb also takes server unique name as a parameter if such a hint was found. for hints' use, which includes  enter the commit message for your changes.
This commit is contained in:
VilhoRaatikka
2014-07-31 23:40:02 +03:00
parent ef924cdc00
commit 4f3d746f4e
8 changed files with 342 additions and 136 deletions
Download Patch File Download Diff File Expand all files Collapse all files

17
server/core/hint.c
View File

@ -134,3 +134,20 @@ hint_free(HINT *hint)
free(hint->value);
free(hint);
}
bool hint_exists(
HINT** p_hint,
HINT_TYPE type)
{
bool succp = false;
while (*p_hint != NULL)
{
if ((*p_hint)->type == type)
{
succp = true;
}
p_hint = &(*p_hint)->next;
}
return succp;
}