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Traffic is routed to the master if no slaves available

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Traffic is routed to the master if no slaves available, this applies
for router_options=slave in config file
This commit is contained in:
MassimilianoPinto 2014-02-20 13:26:16 +01:00
parent dd5c287339
commit fa14dceb4b
1 changed files with 26 additions and 8 deletions
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34
server/modules/routing/readconnroute.c
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@ -283,6 +283,7 @@ ROUTER_INSTANCE *inst = (ROUTER_INSTANCE *)instance;
ROUTER_CLIENT_SES *client_rses;
BACKEND *candidate = NULL;
int i;
int master_host = -1;
LOGIF(LD, (skygw_log_write_flush(
LOGFILE_DEBUG,
@ -336,6 +337,16 @@ int i;
inst->bitmask)));
}
/*
* If router_options=slave, get the running master
* It will be used if there arw no running slaves at all
*/
if (inst->bitvalue == SERVER_SLAVE) {
if (master_host < 0 && (SERVER_IS_MASTER(inst->servers[i]->server))) {
master_host = i;
}
}
if (inst->servers[i] &&
SERVER_IS_RUNNING(inst->servers[i]->server) &&
(inst->servers[i]->server->status & inst->bitmask) ==
@ -368,15 +379,22 @@ int i;
}
}
/* no candidate server here, clean and return NULL */
/* The are no candidate server here!
* With router_option=slave a master_host could be set, so route traffic there.
* Otherwise, just clean up and return NULL
*/
if (!candidate) {
LOGIF(LE, (skygw_log_write_flush(
LOGFILE_ERROR,
"Error : Failed to create new routing session. "
"Couldn't find eligible candidate server. Freeing "
"allocated resources.")));
free(client_rses);
return NULL;
if (master_host >= 0) {
candidate = inst->servers[master_host];
} else {
LOGIF(LE, (skygw_log_write_flush(
LOGFILE_ERROR,
"Error : Failed to create new routing session. "
"Couldn't find eligible candidate server. Freeing "
"allocated resources.")));
free(client_rses);
return NULL;
}
}
/*