zone-size-limit: added function to measure size of zone contents

Conflicts:
	src/knot/zone/contents.c
	src/knot/zone/contents.h

src/knot/nameserver/ixfr.c

@@ -385,11 +385,9 @@ static int ixfrin_answer_init(struct answer_data *data)
 	data->ext = proc;
 	data->ext_cleanup = &ixfrin_cleanup;
 
-	/// \TODO Temporary solution, because not every zone input is checked
-	/// measured. Used only for measure size of zone.
-	err_handler_logger_t handler;
-	handler._cb.cb = err_handler_logger;
-	zone_do_sem_checks(proc->zone->contents, false, &handler._cb);
+	/// \TODO Temporary solution, because not every zone input is checked by
+	/// semantic checks. And zone size is not set properly.
+	zone_contents_measure_size(proc->zone->contents);
 
 	return KNOT_EOK;
 }
@@ -667,7 +665,6 @@ static int process_ixfrin_packet(knot_pkt_t *pkt, struct answer_data *adata)
 
 		if (ixfr->add_size > ixfr->del_size &&
 		    (zone_size + ixfr->add_size - ixfr->del_size) > size_limit) {
-			log_zone_debug(ixfr->zone->name, "zone_size:%zu + add_size:%zu + del_size:%zu", zone_size, ixfr->add_size, ixfr->del_size);
 			IXFRIN_LOG(LOG_WARNING, "zone size exceeded, limit %ld",
 			           size_limit);
 			return KNOT_STATE_FAIL;

src/knot/zone/contents.c

@@ -1435,3 +1435,21 @@ zone_node_t *zone_contents_find_node_for_rr(zone_contents_t *zone, const knot_rr
 
 	return node;
 }
+
+static int measure_size(const zone_node_t *node, void *data){
+
+	size_t *size = data;
+	int rrset_count = node->rrset_count;
+	for (int i = 0; i < rrset_count; i++) {
+		knot_rrset_t rrset = node_rrset_at(node, i);
+		*size += knot_rrset_size(&rrset);
+	}
+	return KNOT_EOK;
+}
+
+size_t zone_contents_measure_size(zone_contents_t *zone)
+{
+	zone->size = 0;
+	zone_contents_tree_apply_inorder(zone, measure_size, &zone->size);
+	return zone->size;
+}

src/knot/zone/contents.h

@@ -292,4 +292,6 @@ zone_node_t *zone_contents_get_node_for_rr(zone_contents_t *zone, const knot_rrs
 
 zone_node_t *zone_contents_find_node_for_rr(zone_contents_t *zone, const knot_rrset_t *rrset);
 
+size_t zone_contents_measure_size(zone_contents_t *zone);
+
 /*! @} */