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Completion to fix for http://bugs.skysql.com/show_bug.cgi?id=547

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server.h:added macro SERVER_IS_ROOT_MASTER for finding valid candidate for root master
readwritesplit.c: wrote open three if conditions in get_root_master_bref for clarity
This commit is contained in:
VilhoRaatikka 2014-09-16 14:49:04 +03:00
parent 7300e58787
commit 48c25155f5
2 changed files with 17 additions and 5 deletions
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8
server/include/server.h
View File

@ -123,7 +123,15 @@ typedef struct server {
*/
#define SERVER_IS_MASTER(server) \
(((server)->status & (SERVER_RUNNING|SERVER_MASTER|SERVER_SLAVE|SERVER_MAINT)) == (SERVER_RUNNING|SERVER_MASTER))
/**
* Is the server valid candidate for root master. The server must be running,
* marked as master and not have maintenance bit set.
*/
#define SERVER_IS_ROOT_MASTER(server) \
(((server)->status & (SERVER_RUNNING|SERVER_MASTER|SERVER_MAINT)) == (SERVER_RUNNING|SERVER_MASTER))
/**
* Is the server a slave? The server must be both running and marked as a slave
* in order for the macro to return true
*/

14
server/modules/routing/readwritesplit/readwritesplit.c
View File

@ -4382,13 +4382,17 @@ static backend_ref_t* get_root_master_bref(
while (i<rses->rses_nbackends)
{
if (SERVER_IS_MASTER(bref->bref_backend->backend_server))
if ((bref->bref_backend->backend_server->status &
(SERVER_MASTER|SERVER_MAINT)) == SERVER_MASTER)
{
if (candidate_bref == NULL ||
(bref->bref_backend->backend_server->depth <
candidate_bref->bref_backend->backend_server->depth))
if (bref->bref_backend->backend_server->status & SERVER_MASTER)
{
candidate_bref = bref;
if (candidate_bref == NULL ||
(bref->bref_backend->backend_server->depth <
candidate_bref->bref_backend->backend_server->depth))
{
candidate_bref = bref;
}
}
}
bref++;