qd_error_t qd_entity_set_stringf(qd_entity_t *entity, const char* attribute, const char *format, ...)
{
// Calculate the size
char dummy[1];
va_list ap;
va_start(ap, format);
int len = vsnprintf(dummy, 1, format, ap);
va_end(ap);
char buf[len+1];
va_start(ap, format);
vsnprintf(buf, len+1, format, ap);
va_end(ap);
return qd_entity_set_string(entity, attribute, buf);
}
qd_error_t qd_entity_refresh_connector(qd_entity_t* entity, void *impl)
{
qd_connector_t *ct = (qd_connector_t*) impl;
if (DEQ_SIZE(ct->conn_info_list) > 1) {
qd_failover_item_list_t conn_info_list = ct->conn_info_list;
qd_failover_item_t *item = DEQ_HEAD(conn_info_list);
//
// As you can see we are skipping the head of the list. The
// first item in the list is always the original connection information
// and we dont want to display that information as part of the failover list.
//
int arr_length = get_failover_info_length(conn_info_list);
char failover_info[arr_length];
memset(failover_info, 0, sizeof(failover_info));
item = DEQ_NEXT(item);
while(item) {
if (item->scheme) {
strcat(failover_info, item->scheme);
strcat(failover_info, "://");
}
if (item->host_port) {
strcat(failover_info, item->host_port);
}
item = DEQ_NEXT(item);
if (item) {
strcat(failover_info, ", ");
}
}
if (qd_entity_set_string(entity, "failoverList", failover_info) == 0)
return QD_ERROR_NONE;
}
else {
if (qd_entity_clear(entity, "failoverList") == 0)
return QD_ERROR_NONE;
}
return qd_error_code();
}
