diff options
Diffstat (limited to 'python/vyos')
| -rw-r--r-- | python/vyos/nat.py | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/python/vyos/nat.py b/python/vyos/nat.py index 603fedb9b..418efe649 100644 --- a/python/vyos/nat.py +++ b/python/vyos/nat.py @@ -94,6 +94,39 @@ def parse_nat_rule(rule_conf, rule_id, nat_type, ipv6=False): if options: translation_str += f' {",".join(options)}' + if 'backend' in rule_conf['load_balance']: + hash_input_items = [] + current_prob = 0 + nat_map = [] + + for trans_addr, addr in rule_conf['load_balance']['backend'].items(): + item_prob = int(addr['weight']) + upper_limit = current_prob + item_prob - 1 + hash_val = str(current_prob) + '-' + str(upper_limit) + element = hash_val + " : " + trans_addr + nat_map.append(element) + current_prob = current_prob + item_prob + + elements = ' , '.join(nat_map) + + if 'hash' in rule_conf['load_balance'] and 'random' in rule_conf['load_balance']['hash']: + translation_str += ' numgen random mod 100 map ' + '{ ' + f'{elements}' + ' }' + else: + for input_param in rule_conf['load_balance']['hash']: + if input_param == 'source-address': + param = 'ip saddr' + elif input_param == 'destination-address': + param = 'ip daddr' + elif input_param == 'source-port': + prot = rule_conf['protocol'] + param = f'{prot} sport' + elif input_param == 'destination-port': + prot = rule_conf['protocol'] + param = f'{prot} dport' + hash_input_items.append(param) + hash_input = ' . '.join(hash_input_items) + translation_str += f' jhash ' + f'{hash_input}' + ' mod 100 map ' + '{ ' + f'{elements}' + ' }' + for target in ['source', 'destination']: if target not in rule_conf: continue |