def process(self, tag_tokens, binding_data_list):
"""
Process this tag.
:param tag_tokens: Tag arguments.
:type tag_tokens: 'list'
:param binding_data_list: Binding data used during the processing.
:type binding_data_list: 'list'
:return: JSON object
:rtype: JSON object
"""
token_count = len(tag_tokens)
if token_count < 3:
raise TemplateEngineException(
"Tag \"{}\" needs at least 3 parameter."
" Parameters given {}".format(Ipv4SubnetTag.name, tag_tokens))
network = ipaddress.ip_network(
self._element_resolver.resolve(tag_tokens[0], binding_data_list))
subnet_count = int(
self._element_resolver.resolve(tag_tokens[1], binding_data_list))
subnet_index = int(
self._element_resolver.resolve(tag_tokens[2], binding_data_list))
base2_exp = 0
count = int(subnet_count) - 1
while count & 1:
base2_exp += 1
count = count >> 1
if count:
raise TemplateEngineException(
"Subnet count must be multiple of 2s."
" {} is given".format(subnet_count))
if base2_exp == 0:
return tag_tokens[0]
subnet_prefix = network.prefixlen + base2_exp
subnet_address = ipaddress.ip_address(
int(network.network_address) +
(subnet_index << (32 - subnet_prefix)))
return str(subnet_address) + '/' + str(subnet_prefix)
def process(self, tag_tokens, binding_data_list):
"""
Process this tag.
:param tag_tokens: Tag arguments.
:type tag_tokens: 'list'
:param binding_data_list: Binding data used during the processing.
:type binding_data_list: 'list'
:return: JSON object
:rtype: JSON object
"""
token_count = len(tag_tokens)
if token_count < 1:
raise TemplateEngineException("Tag \"{}\" requires 1 parameter."
" Parameters given {}".format(
Ipv4HostNetmaskTag.name,
tag_tokens))
network = ipaddress.ip_network(
self._element_resolver.resolve(tag_tokens[0], binding_data_list))
return str(network.netmask)