mcon_collection* mongo_find_candidate_servers(mongo_con_manager *manager, mongo_read_preference *rp, mongo_servers *servers)
{
int i;
mcon_collection *all, *filtered;
mongo_manager_log(manager, MLOG_RS, MLOG_FINE, "finding candidate servers");
all = mongo_find_all_candidate_servers(manager, rp);
if (servers->con_type == MONGO_CON_TYPE_REPLSET) {
filtered = mongo_filter_candidates_by_replicaset_name(manager, all, servers);
} else {
filtered = mongo_filter_candidates_by_seed(manager, all, servers);
}
mcon_collection_free(all);
all = filtered;
filtered = mongo_filter_candidates_by_credentials(manager, all, servers);
mcon_collection_free(all);
all = filtered;
if (rp->tagset_count != 0) {
mongo_manager_log(manager, MLOG_RS, MLOG_FINE, "limiting by tagsets");
/* If we have tagsets configured for the replicaset then we need to do
* some more filtering */
for (i = 0; i < rp->tagset_count; i++) {
char *tmp_ts = mongo_read_preference_squash_tagset(rp->tagsets[i]);
mongo_manager_log(manager, MLOG_RS, MLOG_FINE, "checking tagset: %s", tmp_ts);
filtered = mongo_filter_candidates_by_tagset(manager, all, rp->tagsets[i]);
mongo_manager_log(manager, MLOG_RS, MLOG_FINE, "tagset %s matched %d candidates", tmp_ts, filtered->count);
free(tmp_ts);
if (filtered->count > 0) {
mcon_collection_free(all);
return filtered;
}
}
mcon_collection_free(filtered);
mcon_collection_free(all);
return NULL;
} else {
return all;
}
}
void mongo_servers_dump(mongo_con_manager *manager, mongo_servers *servers)
{
int i;
mongo_manager_log(manager, MLOG_PARSE, MLOG_INFO, "Seeds:");
for (i = 0; i < servers->count; i++) {
mongo_server_def_dump(manager, servers->server[i]);
}
mongo_manager_log(manager, MLOG_PARSE, MLOG_INFO, "");
mongo_manager_log(manager, MLOG_PARSE, MLOG_INFO, "Options:");
mongo_manager_log(manager, MLOG_PARSE, MLOG_INFO, "- repl_set_name: %s", servers->options.repl_set_name);
mongo_manager_log(manager, MLOG_PARSE, MLOG_INFO, "- readPreference: %s", mongo_read_preference_type_to_name(servers->read_pref.type));
for (i = 0; i < servers->read_pref.tagset_count; i++) {
char *tmp = mongo_read_preference_squash_tagset(servers->read_pref.tagsets[i]);
mongo_manager_log(manager, MLOG_PARSE, MLOG_INFO, "- tagset: %s", tmp);
free(tmp);
}
mongo_manager_log(manager, MLOG_PARSE, MLOG_INFO, "\n");
}
