def _validate_network(self, network, prefix):
try:
net = IPNetwork(network)
except ValueError:
self.log.error(
u'The network parameter is invalid value: %s.', network)
raise InvalidValueError(None, 'network', network)
blocks, network, version = break_network(network)
expl = split(
net.network.exploded, "." if version == IP_VERSION.IPv4[0] else ":")
expl.append(str(net.prefixlen))
block = int(blocks[-1])
if blocks != expl:
raise InvalidValueError(None, 'network', network)
if block > int(prefix):
self.log.error(u'The block parameter is invalid value: %s.', block)
raise InvalidValueError(None, 'block', block)
def handle_post(self, request, user, *args, **kwargs):
"""Treat POST requests to add new Network
URL: network/add/
"""
try:
# Commons Validations
# User permission
if not has_perm(user, AdminPermission.VLAN_MANAGEMENT,
AdminPermission.WRITE_OPERATION):
self.log.error(
u'User does not have permission to perform the operation.')
return self.not_authorized()
# Business Validations
# Load XML data
xml_map, attrs_map = loads(request.raw_post_data)
# XML data format
networkapi_map = xml_map.get('networkapi')
if networkapi_map is None:
msg = u'There is no value to the networkapi tag of XML request.'
self.log.error(msg)
return self.response_error(3, msg)
network_map = networkapi_map.get('network')
if network_map is None:
msg = u'There is no value to the vlan tag of XML request.'
self.log.error(msg)
return self.response_error(3, msg)
# Get XML data
network = network_map.get('network')
id_vlan = network_map.get('id_vlan')
network_type = network_map.get('id_network_type')
environment_vip = network_map.get('id_environment_vip')
cluster_unit = network_map.get('cluster_unit')
# Valid Network
try:
net = IPNetwork(network)
except ValueError, e:
raise InvalidValueError(None, 'network', network)
# VLAN
# Valid vlan ID
if not is_valid_int_greater_zero_param(id_vlan):
raise InvalidValueError(None, 'id_vlan', id_vlan)
# Find vlan by ID to check if it exist
vlan = Vlan().get_by_pk(id_vlan)
# Network Type
# Valid network_type ID
if not is_valid_int_greater_zero_param(network_type):
raise InvalidValueError(None, 'id_network_type', network_type)
# Find network_type by ID to check if it exist
net_type = TipoRede.get_by_pk(network_type)
# Environment Vip
if environment_vip is not None:
# Valid environment_vip ID
if not is_valid_int_greater_zero_param(environment_vip):
raise InvalidValueError(None, 'id_environment_vip',
environment_vip)
evips = EnvironmentVip.objects.all()
evip_list = EnvironmentVip.available_evips(
EnvironmentVip(), evips, int(id_vlan))
# Check if the chose environment is in the same environment
if any(
int(environment_vip) == item['id']
for item in evip_list):
# Find Environment VIP by ID to check if it exist
env_vip = EnvironmentVip.get_by_pk(environment_vip)
else:
raise InvalidValueError(None, 'id_environment_vip',
environment_vip)
else:
env_vip = None
# Check unchecked exception
blocks, network, version = break_network(network)
expl = split(net.network.exploded,
'.' if version == IP_VERSION.IPv4[0] else ':')
expl.append(str(net.prefixlen))
if blocks != expl:
raise InvalidValueError(None, 'rede', network)
# Business Rules
if version == IP_VERSION.IPv4[0]:
# Find all networks related to environment
nets = NetworkIPv4.objects.filter(
vlan__ambiente__id=vlan.ambiente.id)
# Cast to API class
networks = set([
IPv4Network('%d.%d.%d.%d/%d' %
(net_ip.oct1, net_ip.oct2, net_ip.oct3,
net_ip.oct4, net_ip.block)) for net_ip in nets
])
# If network selected not in use
for network_aux in networks:
if net in network_aux or network_aux in net:
self.log.debug(
'Network %s cannot be allocated. It conflicts with %s already in use in this environment.'
% (net, network))
raise NetworkIPv4AddressNotAvailableError(
None,
u'Network cannot be allocated. %s already in use in this environment.'
% network_aux)
if env_vip is not None:
# Find all networks related to environment vip
nets = NetworkIPv4.objects.filter(
ambient_vip__id=env_vip.id)
# Cast to API class
networks = set([
IPv4Network('%d.%d.%d.%d/%d' %
(net_ip.oct1, net_ip.oct2, net_ip.oct3,
net_ip.oct4, net_ip.block))
for net_ip in nets
])
# If there is already a network with the same range ip as
# related the environment vip
for network_aux in networks:
if net in network_aux or network_aux in net:
self.log.debug(
'Network %s cannot be allocated. It conflicts with %s already in use in this environment VIP.'
% (net, network))
raise NetworkIPv4AddressNotAvailableError(
None,
u'Network cannot be allocated. %s already in use in this environment VIP.'
% network_aux)
# # Filter case 1 - Adding new network with same ip range to another network on other environment ##
# Get environments with networks with the same ip range
nets = NetworkIPv4.objects.filter(oct1=expl[0],
oct2=expl[1],
oct3=expl[2],
oct4=expl[3],
block=expl[4])
env_ids = list()
for net_ip in nets:
env_ids.append(net_ip.vlan.ambiente.id)
# If other network with same ip range exists
if len(env_ids) > 0:
# Get equipments related to this network's environment
env_equips = EquipamentoAmbiente.objects.filter(
ambiente=vlan.ambiente.id)
# Verify equipments related with all other environments
# that contains networks with same ip range
for env_id in env_ids:
# Equipments related to other environments
other_env_equips = EquipamentoAmbiente.objects.filter(
ambiente=env_id)
# Adjust to equipments
equip_list = list()
for equip_env in other_env_equips:
equip_list.append(equip_env.equipamento.id)
for env_equip in env_equips:
if env_equip.equipamento.id in equip_list:
# Filter testing
if other_env_equips[
0].ambiente.filter is None or vlan.ambiente.filter is None:
raise NetworkIPRangeEnvError(
None,
u'Um dos equipamentos associados com o ambiente desta rede também está associado com outro ambiente que tem uma rede com essa mesma faixa, adicione filtros nos ambientes se necessário.'
)
else:
# Test both environment's filters
tp_equip_list_one = list()
for fet in FilterEquipType.objects.filter(
filter=vlan.ambiente.filter.id):
tp_equip_list_one.append(fet.equiptype)
tp_equip_list_two = list()
for fet in FilterEquipType.objects.filter(
filter=other_env_equips[0].
ambiente.filter.id):
tp_equip_list_two.append(fet.equiptype)
if env_equip.equipamento.tipo_equipamento not in tp_equip_list_one or env_equip.equipamento.tipo_equipamento not in tp_equip_list_two:
raise NetworkIPRangeEnvError(
None,
u'Um dos equipamentos associados com o ambiente desta rede também está associado com outro ambiente que tem uma rede com essa mesma faixa, adicione filtros nos ambientes se necessário.'
)
# # Filter case 1 - end ##
# New NetworkIPv4
network_ip = NetworkIPv4()
# Set octs by network generated
network_ip.oct1, network_ip.oct2, network_ip.oct3, network_ip.oct4 = str(
net.network).split('.')
# Set block by network generated
network_ip.block = net.prefixlen
# Set mask by network generated
network_ip.mask_oct1, network_ip.mask_oct2, network_ip.mask_oct3, network_ip.mask_oct4 = str(
net.netmask).split('.')
# Set broadcast by network generated
network_ip.broadcast = net.broadcast.compressed
else:
# Find all networks ralated to environment
nets = NetworkIPv6.objects.filter(
vlan__ambiente__id=vlan.ambiente.id)
# Cast to API class
networks = set([
IPv6Network('%s:%s:%s:%s:%s:%s:%s:%s/%d' %
(net_ip.block1, net_ip.block2, net_ip.block3,
net_ip.block4, net_ip.block5, net_ip.block6,
net_ip.block7, net_ip.block8, net_ip.block))
for net_ip in nets
])
# If network selected not in use
for network_aux in networks:
if net in network_aux or network_aux in net:
self.log.debug(
'Network %s cannot be allocated. It conflicts with %s already in use in this environment.'
% (net, network))
raise NetworkIPv4AddressNotAvailableError(
None,
u'Network cannot be allocated. %s already in use in this environment.'
% network_aux)
if env_vip is not None:
# Find all networks related to environment vip
nets = NetworkIPv6.objects.filter(
ambient_vip__id=env_vip.id)
# Cast to API class
networks = set([
IPv6Network(
'%s:%s:%s:%s:%s:%s:%s:%s/%d' %
(net_ip.block1, net_ip.block2, net_ip.block3,
net_ip.block4, net_ip.block5, net_ip.block6,
net_ip.block7, net_ip.block8, net_ip.block))
for net_ip in nets
])
# If there is already a network with the same range ip as
# related the environment vip
for network_aux in networks:
if net in network_aux or network_aux in net:
self.log.debug(
'Network %s cannot be allocated. It conflicts with %s already in use in this environment VIP.'
% (net, network))
raise NetworkIPv4AddressNotAvailableError(
None,
u'Network cannot be allocated. %s already in use in this environment VIP.'
% network_aux)
# # Filter case 1 - Adding new network with same ip range to another network on other environment ##
# Get environments with networks with the same ip range
nets = NetworkIPv6.objects.filter(block1=expl[0],
block2=expl[1],
block3=expl[2],
block4=expl[3],
block5=expl[4],
block6=expl[5],
block7=expl[6],
block8=expl[7],
block=expl[8])
env_ids = list()
for net_ip in nets:
env_ids.append(net_ip.vlan.ambiente.id)
# If other network with same ip range exists
if len(env_ids) > 0:
# Get equipments related to this network's environment
env_equips = EquipamentoAmbiente.objects.filter(
ambiente=vlan.ambiente.id)
# Verify equipments related with all other environments
# that contains networks with same ip range
for env_id in env_ids:
# Equipments related to other environments
other_env_equips = EquipamentoAmbiente.objects.filter(
ambiente=env_id)
# Adjust to equipments
equip_list = list()
for equip_env in other_env_equips:
equip_list.append(equip_env.equipamento.id)
for env_equip in env_equips:
if env_equip.equipamento.id in equip_list:
# Filter testing
if other_env_equips[
0].ambiente.filter is None or vlan.ambiente.filter is None:
raise NetworkIPRangeEnvError(
None,
u'Um dos equipamentos associados com o ambiente desta rede também está associado com outro ambiente que tem uma rede com essa mesma faixa, adicione filtros nos ambientes se necessário.'
)
else:
# Test both environment's filters
tp_equip_list_one = list()
for fet in FilterEquipType.objects.filter(
filter=vlan.ambiente.filter.id):
tp_equip_list_one.append(fet.equiptype)
tp_equip_list_two = list()
for fet in FilterEquipType.objects.filter(
filter=other_env_equips[0].
ambiente.filter.id):
tp_equip_list_two.append(fet.equiptype)
if env_equip.equipamento.tipo_equipamento not in tp_equip_list_one or env_equip.equipamento.tipo_equipamento not in tp_equip_list_two:
raise NetworkIPRangeEnvError(
None,
u'Um dos equipamentos associados com o ambiente desta rede também está associado com outro ambiente que tem uma rede com essa mesma faixa, adicione filtros nos ambientes se necessário.'
)
# # Filter case 1 - end ##
# New NetworkIPv6
network_ip = NetworkIPv6()
# Set block by network generated
network_ip.block1, network_ip.block2, network_ip.block3, network_ip.block4, network_ip.block5, network_ip.block6, network_ip.block7, network_ip.block8 = str(
net.network.exploded).split(':')
# Set block by network generated
network_ip.block = net.prefixlen
# Set mask by network generated
network_ip.mask1, network_ip.mask2, network_ip.mask3, network_ip.mask4, network_ip.mask5, network_ip.mask6, network_ip.mask7, network_ip.mask8 = str(
net.netmask.exploded).split(':')
# Get all vlans environments from equipments of the current
# environment
ambiente = vlan.ambiente
equips = list()
envs = list()
# equips = all equipments from the environment which this network
# is about to be allocated on
for env in ambiente.equipamentoambiente_set.all():
equips.append(env.equipamento)
# envs = all environments from all equips above
# This will be used to test all networks from the environments.
for equip in equips:
for env in equip.equipamentoambiente_set.all():
if env.ambiente not in envs:
envs.append(env.ambiente)
network_ip_verify = IPNetwork(network)
# For all vlans in all common environments,
# check if any network is a subnetwork or supernetwork
# of the desired network network_ip_verify
for env in envs:
for vlan_obj in env.vlan_set.all():
is_subnet = verify_subnet(vlan_obj, network_ip_verify,
version)
if is_subnet:
if vlan_obj.ambiente == ambiente:
raise NetworkIPRangeEnvError(None)
if ambiente.filter_id is None or vlan_obj.ambiente.filter_id is None or int(
vlan_obj.ambiente.filter_id) != int(
ambiente.filter_id):
raise NetworkIPRangeEnvError(None)
# Set Vlan
network_ip.vlan = vlan
# Set Network Type
network_ip.network_type = net_type
# Set Environment VIP
network_ip.ambient_vip = env_vip
# Set Cluster Unit
network_ip.cluster_unit = cluster_unit
# Persist
try:
# Delete vlan's cache
destroy_cache_function([id_vlan])
network_ip.save()
list_equip_routers_ambient = EquipamentoAmbiente.objects.filter(
ambiente=network_ip.vlan.ambiente.id, is_router=True)
if list_equip_routers_ambient:
if version == IP_VERSION.IPv4[0]:
if network_ip.block < 31:
# Add Adds the first available ipv4 on all equipment
# that is configured as a router for the environment
# related to network
ip = Ip.get_first_available_ip(network_ip.id)
ip = str(ip).split('.')
ip_model = Ip()
ip_model.oct1 = ip[0]
ip_model.oct2 = ip[1]
ip_model.oct3 = ip[2]
ip_model.oct4 = ip[3]
ip_model.networkipv4_id = network_ip.id
ip_model.save()
if len(list_equip_routers_ambient
) > 1 and network_ip.block < 30:
multiple_ips = True
else:
multiple_ips = False
for equip in list_equip_routers_ambient:
IpEquipamento().create(user, ip_model.id,
equip.equipamento.id)
if multiple_ips:
router_ip = Ip.get_first_available_ip(
network_ip.id, True)
router_ip = str(router_ip).split('.')
ip_model2 = Ip()
ip_model2.oct1 = router_ip[0]
ip_model2.oct2 = router_ip[1]
ip_model2.oct3 = router_ip[2]
ip_model2.oct4 = router_ip[3]
ip_model2.networkipv4_id = network_ip.id
ip_model2.save(user)
IpEquipamento().create(
user, ip_model2.id,
equip.equipamento.id)
else:
if network_ip.block < 127:
# Add Adds the first available ipv6 on all equipment
# that is configured as a router for the environment
# related to network
ipv6 = Ipv6.get_first_available_ip6(network_ip.id)
ipv6 = str(ipv6).split(':')
ipv6_model = Ipv6()
ipv6_model.block1 = ipv6[0]
ipv6_model.block2 = ipv6[1]
ipv6_model.block3 = ipv6[2]
ipv6_model.block4 = ipv6[3]
ipv6_model.block5 = ipv6[4]
ipv6_model.block6 = ipv6[5]
ipv6_model.block7 = ipv6[6]
ipv6_model.block8 = ipv6[7]
ipv6_model.networkipv6_id = network_ip.id
ipv6_model.save()
if len(list_equip_routers_ambient
) > 1 and network_ip.block < 126:
multiple_ips = True
else:
multiple_ips = False
for equip in list_equip_routers_ambient:
Ipv6Equipament().create(
user, ipv6_model.id, equip.equipamento.id)
if multiple_ips:
router_ip = Ipv6.get_first_available_ip6(
network_ip.id, True)
router_ip = str(router_ip).split(':')
ipv6_model2 = Ipv6()
ipv6_model2.block1 = router_ip[0]
ipv6_model2.block2 = router_ip[1]
ipv6_model2.block3 = router_ip[2]
ipv6_model2.block4 = router_ip[3]
ipv6_model2.block5 = router_ip[4]
ipv6_model2.block6 = router_ip[5]
ipv6_model2.block7 = router_ip[6]
ipv6_model2.block8 = router_ip[7]
ipv6_model2.networkipv6_id = network_ip.id
ipv6_model2.save(user)
Ipv6Equipament().create(
user, ipv6_model2.id,
equip.equipamento.id)
except Exception, e:
raise IpError(e, u'Error persisting Network.')
def handle_post(self, request, user, *args, **kwargs):
"""Treat POST requests to add new Network
URL: network/add/
"""
try:
if not has_perm(user, AdminPermission.VLAN_MANAGEMENT,
AdminPermission.WRITE_OPERATION):
self.log.error(
u'User does not have permission to perform the operation.')
return self.not_authorized()
xml_map, attrs_map = loads(request.raw_post_data)
networkapi_map = xml_map.get('networkapi')
if networkapi_map is None:
msg = u'There is no value to the networkapi tag of XML request.'
self.log.error(msg)
return self.response_error(3, msg)
network_map = networkapi_map.get('network')
if network_map is None:
msg = u'There is no value to the vlan tag of XML request.'
self.log.error(msg)
return self.response_error(3, msg)
# Get XML data
network = network_map.get('network')
id_vlan = network_map.get('id_vlan')
network_type = network_map.get('id_network_type')
environment_vip = network_map.get('id_environment_vip')
cluster_unit = network_map.get('cluster_unit')
try:
net = IPNetwork(network)
except ValueError:
raise InvalidValueError(None, 'network', network)
# Valid vlan ID
if not is_valid_int_greater_zero_param(id_vlan):
raise InvalidValueError(None, 'id_vlan', id_vlan)
if not is_valid_int_greater_zero_param(network_type):
raise InvalidValueError(None, 'id_network_type', network_type)
vlan = Vlan().get_by_pk(id_vlan)
net_type = TipoRede.get_by_pk(network_type)
if environment_vip is not None:
if not is_valid_int_greater_zero_param(environment_vip):
raise InvalidValueError(None, 'id_environment_vip',
environment_vip)
evips = EnvironmentVip.objects.all()
evip_list = EnvironmentVip.available_evips(
EnvironmentVip(), evips, int(id_vlan))
# Check if the chose environment is in the same environment
if any(
int(environment_vip) == item['id']
for item in evip_list):
# Find Environment VIP by ID to check if it exist
env_vip = EnvironmentVip.get_by_pk(environment_vip)
else:
raise InvalidValueError(None, 'id_environment_vip',
environment_vip)
else:
env_vip = None
# Check unchecked exception
blocks, network, version = break_network(network)
expl = split(net.network.exploded,
'.' if version == IP_VERSION.IPv4[0] else ':')
expl.append(str(net.prefixlen))
if blocks != expl:
raise InvalidValueError(None, 'rede', network)
if version == IP_VERSION.IPv4[0]:
# Find all networks related to environment
nets = NetworkIPv4.objects.filter(
vlan__ambiente__id=vlan.ambiente.id)
# Cast to API class
networks = set([
IPv4Network('%d.%d.%d.%d/%d' %
(net_ip.oct1, net_ip.oct2, net_ip.oct3,
net_ip.oct4, net_ip.block)) for net_ip in nets
])
# If network selected not in use
for network_aux in networks:
if net in network_aux or network_aux in net:
self.log.debug(
'Network %s cannot be allocated. It conflicts with %s already '
'in use in this environment.' % (net, network))
raise NetworkIPv4AddressNotAvailableError(
None,
u'Network cannot be allocated. %s already in use in this environment.'
% network_aux)
if env_vip is not None:
# Find all networks related to environment vip
nets = NetworkIPv4.objects.filter(
ambient_vip__id=env_vip.id)
# Cast to API class
networks = set([
IPv4Network('%d.%d.%d.%d/%d' %
(net_ip.oct1, net_ip.oct2, net_ip.oct3,
net_ip.oct4, net_ip.block))
for net_ip in nets
])
# If there is already a network with the same range ip as
# related the environment vip
for network_aux in networks:
if net in network_aux or network_aux in net:
self.log.debug(
'Network %s cannot be allocated. It conflicts with %s already in use '
'in this environment VIP.' % (net, network))
raise NetworkIPv4AddressNotAvailableError(
None,
u'Network cannot be allocated. %s already in use '
u'in this environment VIP.' % network_aux)
# Check if the new network is in the range of the Environment Network
try:
vlan = Vlan().get_by_pk(id_vlan)
vlan_env_id = vlan.ambiente
try:
config_env = ConfigEnvironment()
environment_conf = config_env.get_by_environment(
vlan_env_id)
if environment_conf:
for env_config in environment_conf:
ipconfig = env_config.ip_config
subnet = ipconfig.subnet
env_net = IPNetwork(subnet)
try:
if net in env_net:
self.log.debug(
'Network "%s" can be allocated because is in the '
'environment network(%s) subnets.' %
(net, subnet))
else:
raise NetworkSubnetRange(
None,
'A rede a ser cadastrada (%s) não pertence às '
'subredes do ambiente (rede ambiente: %s). '
'Cadastre o range desejado no '
'ambiente.' % (net, subnet))
except NetworkSubnetRange:
self.log.error(
'Network "%s" can not be allocated because is not in the '
'environment network(%s) subnets.' %
(net, subnet))
return self.response_error(414)
else:
raise NetworkEnvironmentError(
None, 'O ambiente não está configurado. '
'É necessário efetuar a configuração.')
except NetworkEnvironmentError:
self.log.error(
'The environment does not have a registered network'
)
return self.response_error(415)
except Exception as ERROR:
self.log.error(ERROR)
# # Filter case 1 - Adding new network with same ip range to another network on other environment ##
# Get environments with networks with the same ip range
nets = NetworkIPv4.objects.filter(oct1=expl[0],
oct2=expl[1],
oct3=expl[2],
oct4=expl[3],
block=expl[4])
env_ids = list()
for net_ip in nets:
env_ids.append(net_ip.vlan.ambiente.id)
# If other network with same ip range exists
if len(env_ids) > 0:
# Get equipments related to this network's environment
env_equips = EquipamentoAmbiente.objects.filter(
ambiente=vlan.ambiente.id)
# Verify equipments related with all other environments
# that contains networks with same ip range
for env_id in env_ids:
# Equipments related to other environments
other_env_equips = EquipamentoAmbiente.objects.filter(
ambiente=env_id)
# Adjust to equipments
equip_list = list()
for equip_env in other_env_equips:
equip_list.append(equip_env.equipamento.id)
for env_equip in env_equips:
if env_equip.equipamento.id in equip_list:
# Filter testing
if other_env_equips[
0].ambiente.filter is None or vlan.ambiente.filter is None:
raise NetworkIPRangeEnvError(
None,
u'Um dos equipamentos associados com o ambiente '
u'desta rede também está associado com outro ambiente '
u'que tem uma rede com essa mesma faixa, adicione '
u'filtros nos ambientes se necessário.'
)
else:
# Test both environment's filters
tp_equip_list_one = list()
for fet in FilterEquipType.objects.filter(
filter=vlan.ambiente.filter.id):
tp_equip_list_one.append(fet.equiptype)
tp_equip_list_two = list()
for fet in FilterEquipType.objects.filter(
filter=other_env_equips[0].
ambiente.filter.id):
tp_equip_list_two.append(fet.equiptype)
if env_equip.equipamento.tipo_equipamento not in tp_equip_list_one or \
env_equip.equipamento.tipo_equipamento not in tp_equip_list_two:
raise NetworkIPRangeEnvError(
None,
u'Um dos equipamentos associados com o '
u'ambiente desta rede também está associado '
u'com outro ambiente que tem uma rede com '
u'essa mesma faixa, adicione filtros nos '
u'ambientes se necessário.')
# # Filter case 1 - end ##
# New NetworkIPv4
network_ip = NetworkIPv4()
network_ip.oct1, network_ip.oct2, network_ip.oct3, network_ip.oct4 = str(
net.network).split('.')
network_ip.block = net.prefixlen
network_ip.mask_oct1, network_ip.mask_oct2, network_ip.mask_oct3, network_ip.mask_oct4 = \
str(net.netmask).split('.')
network_ip.broadcast = net.broadcast.compressed
else:
# Find all networks ralated to environment
nets = NetworkIPv6.objects.filter(
vlan__ambiente__id=vlan.ambiente.id)
networks = set([
IPv6Network('%s:%s:%s:%s:%s:%s:%s:%s/%d' %
(net_ip.block1, net_ip.block2, net_ip.block3,
net_ip.block4, net_ip.block5, net_ip.block6,
net_ip.block7, net_ip.block8, net_ip.block))
for net_ip in nets
])
# If network selected not in use
for network_aux in networks:
if net in network_aux or network_aux in net:
self.log.debug(
'Network %s cannot be allocated. It conflicts with %s already in use '
'in this environment.' % (net, network))
raise NetworkIPv4AddressNotAvailableError(
None,
u'Network cannot be allocated. %s already in '
u'use in this environment.' % network_aux)
if env_vip is not None:
# Find all networks related to environment vip
nets = NetworkIPv6.objects.filter(
ambient_vip__id=env_vip.id)
networks = set([
IPv6Network(
'%s:%s:%s:%s:%s:%s:%s:%s/%d' %
(net_ip.block1, net_ip.block2, net_ip.block3,
net_ip.block4, net_ip.block5, net_ip.block6,
net_ip.block7, net_ip.block8, net_ip.block))
for net_ip in nets
])
# If there is already a network with the same range ip as
# related the environment vip
for network_aux in networks:
if net in network_aux or network_aux in net:
self.log.debug(
'Network %s cannot be allocated. It conflicts with %s already in '
'use in this environment VIP.' %
(net, network))
raise NetworkIPv4AddressNotAvailableError(
None, u'Network cannot be allocated. %s '
u'already in use in this environment '
u'VIP.' % network_aux)
# # Filter case 1 - Adding new network with same ip range to another network on other environment ##
# Get environments with networks with the same ip range
nets = NetworkIPv6.objects.filter(block1=expl[0],
block2=expl[1],
block3=expl[2],
block4=expl[3],
block5=expl[4],
block6=expl[5],
block7=expl[6],
block8=expl[7],
block=expl[8])
env_ids = list()
for net_ip in nets:
env_ids.append(net_ip.vlan.ambiente.id)
# If other network with same ip range exists
if len(env_ids) > 0:
# Get equipments related to this network's environment
env_equips = EquipamentoAmbiente.objects.filter(
ambiente=vlan.ambiente.id)
# Verify equipments related with all other environments
# that contains networks with same ip range
for env_id in env_ids:
# Equipments related to other environments
other_env_equips = EquipamentoAmbiente.objects.filter(
ambiente=env_id)
# Adjust to equipments
equip_list = list()
for equip_env in other_env_equips:
equip_list.append(equip_env.equipamento.id)
for env_equip in env_equips:
if env_equip.equipamento.id in equip_list:
# Filter testing
if other_env_equips[
0].ambiente.filter is None or vlan.ambiente.filter is None:
raise NetworkIPRangeEnvError(
None,
u'Um dos equipamentos associados com o '
u'ambiente desta rede também está associado '
u'com outro ambiente que tem uma rede com '
u'essa mesma faixa, adicione filtros nos '
u'ambientes se necessário.')
else:
# Test both environment's filters
tp_equip_list_one = list()
for fet in FilterEquipType.objects.filter(
filter=vlan.ambiente.filter.id):
tp_equip_list_one.append(fet.equiptype)
tp_equip_list_two = list()
for fet in FilterEquipType.objects.filter(
filter=other_env_equips[0].
ambiente.filter.id):
tp_equip_list_two.append(fet.equiptype)
if env_equip.equipamento.tipo_equipamento not in tp_equip_list_one or \
env_equip.equipamento.tipo_equipamento not in tp_equip_list_two:
raise NetworkIPRangeEnvError(
None,
u'Um dos equipamentos associados com o '
u'ambiente desta rede também está '
u'associado com outro ambiente que tem '
u'uma rede com essa mesma faixa, adicione '
u'filtros nos ambientes se necessário.'
)
# # Filter case 1 - end ##
# New NetworkIPv6
network_ip = NetworkIPv6()
network_ip.block1, network_ip.block2, network_ip.block3, network_ip.block4, network_ip.block5, \
network_ip.block6, network_ip.block7, network_ip.block8 = str(net.network.exploded).split(':')
network_ip.block = net.prefixlen
network_ip.mask1, network_ip.mask2, network_ip.mask3, network_ip.mask4, network_ip.mask5, \
network_ip.mask6, network_ip.mask7, network_ip.mask8 = str(net.netmask.exploded).split(':')
# Get all vlans environments from equipments of the current
# environment
ambiente = vlan.ambiente
equips = list()
envs = list()
# equips = all equipments from the environment which this network
# is about to be allocated on
for env in ambiente.equipamentoambiente_set.all():
equips.append(env.equipamento)
# envs = all environments from all equips above
# This will be used to test all networks from the environments.
for equip in equips:
for env in equip.equipamentoambiente_set.all():
if env.ambiente not in envs:
envs.append(env.ambiente)
network_ip_verify = IPNetwork(network)
# For all vlans in all common environments,
# check if any network is a subnetwork or supernetwork
# of the desired network network_ip_verify
for env in envs:
for vlan_obj in env.vlan_set.all():
is_subnet = verify_subnet(vlan_obj, network_ip_verify,
version)
if is_subnet:
if vlan_obj.ambiente == ambiente:
raise NetworkIPRangeEnvError(None)
if ambiente.filter_id is None or vlan_obj.ambiente.filter_id is None or \
int(vlan_obj.ambiente.filter_id) != int(ambiente.filter_id):
raise NetworkIPRangeEnvError(None)
network_ip.vlan = vlan
network_ip.network_type = net_type
network_ip.ambient_vip = env_vip
network_ip.cluster_unit = cluster_unit
try:
destroy_cache_function([id_vlan])
network_ip.save()
list_equip_routers_ambient = EquipamentoAmbiente.objects.filter(
ambiente=network_ip.vlan.ambiente.id, is_router=True)
if list_equip_routers_ambient:
if version == IP_VERSION.IPv4[0]:
if network_ip.block < 31:
# Add the first available ipv4 on all equipment
# that is configured as a router for the environment
# related to network
ip = Ip.get_first_available_ip(network_ip.id)
ip = str(ip).split('.')
ip_model = Ip()
ip_model.oct1 = ip[0]
ip_model.oct2 = ip[1]
ip_model.oct3 = ip[2]
ip_model.oct4 = ip[3]
ip_model.networkipv4_id = network_ip.id
ip_model.save()
if len(list_equip_routers_ambient
) > 1 and network_ip.block < 30:
multiple_ips = True
else:
multiple_ips = False
logging.debug('vxlan: %s' % vlan.vxlan)
if vlan.vxlan:
logging.debug('vxlan ok')
for equip in list_equip_routers_ambient:
IpEquipamento().create(
user, ip_model.id,
equip.equipamento.id)
if multiple_ips:
debug_ip = Ip.get_first_available_ip(
network_ip.id, True)
ips = Ip()
ips.oct1, ips.oct2, ips.oct3, ips.oct4 = str(
debug_ip).split('.')
ips.networkipv4_id = network_ip.id
ips.descricao = "IP alocado para debug"
ips.save(user)
IpEquipamento().create(
user, ips.id,
list_equip_routers_ambient[0].
equipamento.id)
else:
for equip in list_equip_routers_ambient:
IpEquipamento().create(
user, ip_model.id,
equip.equipamento.id)
if multiple_ips:
router_ip = Ip.get_first_available_ip(
network_ip.id, True)
router_ip = str(router_ip).split('.')
ip_model2 = Ip()
ip_model2.oct1 = router_ip[0]
ip_model2.oct2 = router_ip[1]
ip_model2.oct3 = router_ip[2]
ip_model2.oct4 = router_ip[3]
ip_model2.networkipv4_id = network_ip.id
ip_model2.save(user)
IpEquipamento().create(
user, ip_model2.id,
equip.equipamento.id)
else:
if network_ip.block < 127:
# Add the first available ipv6 on all equipment
# that is configured as a router for the environment
# related to network
ipv6 = Ipv6.get_first_available_ip6(network_ip.id)
ipv6 = str(ipv6).split(':')
ipv6_model = Ipv6()
ipv6_model.block1 = ipv6[0]
ipv6_model.block2 = ipv6[1]
ipv6_model.block3 = ipv6[2]
ipv6_model.block4 = ipv6[3]
ipv6_model.block5 = ipv6[4]
ipv6_model.block6 = ipv6[5]
ipv6_model.block7 = ipv6[6]
ipv6_model.block8 = ipv6[7]
ipv6_model.networkipv6_id = network_ip.id
ipv6_model.save()
if len(list_equip_routers_ambient
) > 1 and network_ip.block < 126:
multiple_ips = True
else:
multiple_ips = False
if vlan.vxlan:
for equip in list_equip_routers_ambient:
Ipv6Equipament().create(
user, ipv6_model.id,
equip.equipamento.id)
if multiple_ips:
router_ip = Ipv6.get_first_available_ip6(
network_ip.id, True)
ipv6s = Ipv6()
ipv6s.block1, ipv6s.block2, ipv6s.block3, ipv6s.block4, ipv6s.block5, \
ipv6s.block6, ipv6s.block7, ipv6s.block8 = str(router_ip).split(':')
ipv6s.networkipv6_id = network_ip.id
ipv6s.descricao = "IPv6 alocado para debug"
ipv6s.save(user)
Ipv6Equipament().create(
user, ipv6s.id,
list_equip_routers_ambient[0].
equipamento.id)
else:
for equip in list_equip_routers_ambient:
Ipv6Equipament().create(
user, ipv6_model.id,
equip.equipamento.id)
if multiple_ips:
router_ip = Ipv6.get_first_available_ip6(
network_ip.id, True)
router_ip = str(router_ip).split(':')
ipv6_model2 = Ipv6()
ipv6_model2.block1 = router_ip[0]
ipv6_model2.block2 = router_ip[1]
ipv6_model2.block3 = router_ip[2]
ipv6_model2.block4 = router_ip[3]
ipv6_model2.block5 = router_ip[4]
ipv6_model2.block6 = router_ip[5]
ipv6_model2.block7 = router_ip[6]
ipv6_model2.block8 = router_ip[7]
ipv6_model2.networkipv6_id = network_ip.id
ipv6_model2.save(user)
Ipv6Equipament().create(
user, ipv6_model2.id,
equip.equipamento.id)
except Exception as e:
raise IpError(e, u'Error persisting Network.')
network_map = dict()
network_map['id'] = network_ip.id
network_map['rede'] = str(net)
network_map[
'broadcast'] = net.broadcast if net.version == 4 else ''
network_map['mask'] = net.netmask.exploded
network_map['id_vlan'] = vlan.id
network_map['id_tipo_rede'] = net_type.id
network_map[
'id_ambiente_vip'] = env_vip.id if env_vip is not None else ''
network_map['active'] = network_ip
return self.response(dumps_networkapi({'network': network_map}))
except NetworkIPRangeEnvError:
return self.response_error(346)
except InvalidValueError as e:
self.log.error(u'Parameter %s is invalid. Value: %s.' %
(e.param, e.value))
return self.response_error(269, e.param, e.value)
except NetworkTypeNotFoundError:
self.log.error(u'The network_type parameter does not exist.')
return self.response_error(111)
except VlanNotFoundError:
self.log.error(u'Vlan not found')
return self.response_error(116)
except EnvironmentVipNotFoundError:
return self.response_error(283)
except NetworkIPv4AddressNotAvailableError:
return self.response_error(295)
except NetworkIPv6AddressNotAvailableError:
return self.response_error(296)
except ConfigEnvironmentInvalidError:
return self.response_error(294)
except NetworkIpAddressNotAvailableError:
return self.response_error(335)
except (IpError, NetworkIPv6Error, NetworkIPv4Error, GrupoError,
VlanError):
return self.response_error(1)
except XMLError as e:
self.log.error(u'Error reading the XML request.')
return self.response_error(3, e)
def handle_post(self, request, user, *args, **kwargs):
"""Treat POST requests to add new Network
URL: network/add/
"""
try:
# Commons Validations
# User permission
if not has_perm(user, AdminPermission.VLAN_MANAGEMENT, AdminPermission.WRITE_OPERATION):
self.log.error(
u'User does not have permission to perform the operation.')
return self.not_authorized()
# Business Validations
# Load XML data
xml_map, attrs_map = loads(request.raw_post_data)
# XML data format
networkapi_map = xml_map.get('networkapi')
if networkapi_map is None:
msg = u'There is no value to the networkapi tag of XML request.'
self.log.error(msg)
return self.response_error(3, msg)
network_map = networkapi_map.get('network')
if network_map is None:
msg = u'There is no value to the vlan tag of XML request.'
self.log.error(msg)
return self.response_error(3, msg)
# Get XML data
network = network_map.get('network')
id_vlan = network_map.get('id_vlan')
network_type = network_map.get('id_network_type')
environment_vip = network_map.get('id_environment_vip')
# Valid Network
try:
net = IPNetwork(network)
except ValueError, e:
raise InvalidValueError(None, 'network', network)
# VLAN
# Valid vlan ID
if not is_valid_int_greater_zero_param(id_vlan):
raise InvalidValueError(None, 'id_vlan', id_vlan)
# Find vlan by ID to check if it exist
vlan = Vlan().get_by_pk(id_vlan)
# Network Type
# Valid network_type ID
if not is_valid_int_greater_zero_param(network_type):
raise InvalidValueError(None, 'id_network_type', network_type)
# Find network_type by ID to check if it exist
net_type = TipoRede.get_by_pk(network_type)
# Environment Vip
if environment_vip is not None:
# Valid environment_vip ID
if not is_valid_int_greater_zero_param(environment_vip):
raise InvalidValueError(
None, 'id_environment_vip', environment_vip)
evips = EnvironmentVip.objects.all()
evip_list = EnvironmentVip.available_evips(
EnvironmentVip(), evips, int(id_vlan))
# Check if the chose environment is in the same environment
if any(int(environment_vip) == item['id'] for item in evip_list):
# Find Environment VIP by ID to check if it exist
env_vip = EnvironmentVip.get_by_pk(environment_vip)
else:
raise InvalidValueError(
None, 'id_environment_vip', environment_vip)
else:
env_vip = None
# Check unchecked exception
blocks, network, version = break_network(network)
expl = split(
net.network.exploded, "." if version == IP_VERSION.IPv4[0] else ":")
expl.append(str(net.prefixlen))
if blocks != expl:
raise InvalidValueError(None, 'rede', network)
# Business Rules
if version == IP_VERSION.IPv4[0]:
# Find all networks related to environment
nets = NetworkIPv4.objects.select_related().filter(
vlan__ambiente__id=vlan.ambiente.id)
# Cast to API class
networks = set([IPv4Network(
'%d.%d.%d.%d/%d' % (net_ip.oct1, net_ip.oct2, net_ip.oct3, net_ip.oct4, net_ip.block)) for net_ip in nets])
# If network selected not in use
if net in networks:
raise NetworkIPv4AddressNotAvailableError(
None, u'Unavailable address to create a NetworkIPv4.')
if env_vip is not None:
# Find all networks related to environment vip
nets = NetworkIPv4.objects.select_related().filter(
ambient_vip__id=env_vip.id)
# Cast to API class
networks = set([IPv4Network(
'%d.%d.%d.%d/%d' % (net_ip.oct1, net_ip.oct2, net_ip.oct3, net_ip.oct4, net_ip.block)) for net_ip in nets])
# If there is already a network with the same range ip as
# related the environment vip
if net in networks:
raise NetworkIpAddressNotAvailableError(
None, u'Unavailable address to create a NetworkIPv4.')
# # Filter case 1 - Adding new network with same ip range to another network on other environment ##
# Get environments with networks with the same ip range
nets = NetworkIPv4.objects.filter(
oct1=expl[0], oct2=expl[1], oct3=expl[2], oct4=expl[3], block=expl[4])
env_ids = list()
for net_ip in nets:
env_ids.append(net_ip.vlan.ambiente.id)
# If other network with same ip range exists
if len(env_ids) > 0:
# Get equipments related to this network's environment
env_equips = EquipamentoAmbiente.objects.filter(
ambiente=vlan.ambiente.id)
# Verify equipments related with all other environments
# that contains networks with same ip range
for env_id in env_ids:
# Equipments related to other environments
other_env_equips = EquipamentoAmbiente.objects.filter(
ambiente=env_id)
# Adjust to equipments
equip_list = list()
for equip_env in other_env_equips:
equip_list.append(equip_env.equipamento.id)
for env_equip in env_equips:
if env_equip.equipamento.id in equip_list:
# Filter testing
if other_env_equips[0].ambiente.filter is None or vlan.ambiente.filter is None:
raise NetworkIPRangeEnvError(
None, u'Um dos equipamentos associados com o ambiente desta rede também está associado com outro ambiente que tem uma rede com essa mesma faixa, adicione filtros nos ambientes se necessário.')
else:
# Test both environment's filters
tp_equip_list_one = list()
for fet in FilterEquipType.objects.filter(filter=vlan.ambiente.filter.id):
tp_equip_list_one.append(fet.equiptype)
tp_equip_list_two = list()
for fet in FilterEquipType.objects.filter(filter=other_env_equips[0].ambiente.filter.id):
tp_equip_list_two.append(fet.equiptype)
if env_equip.equipamento.tipo_equipamento not in tp_equip_list_one or env_equip.equipamento.tipo_equipamento not in tp_equip_list_two:
raise NetworkIPRangeEnvError(
None, u'Um dos equipamentos associados com o ambiente desta rede também está associado com outro ambiente que tem uma rede com essa mesma faixa, adicione filtros nos ambientes se necessário.')
# # Filter case 1 - end ##
# New NetworkIPv4
network_ip = NetworkIPv4()
# Set octs by network generated
network_ip.oct1, network_ip.oct2, network_ip.oct3, network_ip.oct4 = str(
net.network).split('.')
# Set block by network generated
network_ip.block = net.prefixlen
# Set mask by network generated
network_ip.mask_oct1, network_ip.mask_oct2, network_ip.mask_oct3, network_ip.mask_oct4 = str(
net.netmask).split('.')
# Set broadcast by network generated
network_ip.broadcast = net.broadcast
else:
# Find all networks ralated to environment
nets = NetworkIPv6.objects.select_related().filter(
vlan__ambiente__id=vlan.ambiente.id)
# Cast to API class
networks = set([IPv6Network('%s:%s:%s:%s:%s:%s:%s:%s/%d' % (net_ip.block1, net_ip.block2, net_ip.block3,
net_ip.block4, net_ip.block5, net_ip.block6, net_ip.block7, net_ip.block8, net_ip.block)) for net_ip in nets])
# If network selected not in use
if net in networks:
raise NetworkIPv6AddressNotAvailableError(
None, u'Unavailable address to create a NetworkIPv6.')
if env_vip is not None:
# Find all networks related to environment vip
nets = NetworkIPv6.objects.select_related().filter(
ambient_vip__id=env_vip.id)
# Cast to API class
networks = set([IPv6Network('%s:%s:%s:%s:%s:%s:%s:%s/%d' % (net_ip.block1, net_ip.block2, net_ip.block3,
net_ip.block4, net_ip.block5, net_ip.block6, net_ip.block7, net_ip.block8, net_ip.block)) for net_ip in nets])
# If there is already a network with the same range ip as
# related the environment vip
if net in networks:
raise NetworkIpAddressNotAvailableError(
None, u'Unavailable address to create a NetworkIPv6.')
# # Filter case 1 - Adding new network with same ip range to another network on other environment ##
# Get environments with networks with the same ip range
nets = NetworkIPv6.objects.filter(block1=expl[0], block2=expl[1], block3=expl[2], block4=expl[
3], block5=expl[4], block6=expl[5], block7=expl[6], block8=expl[7], block=expl[8])
env_ids = list()
for net_ip in nets:
env_ids.append(net_ip.vlan.ambiente.id)
# If other network with same ip range exists
if len(env_ids) > 0:
# Get equipments related to this network's environment
env_equips = EquipamentoAmbiente.objects.filter(
ambiente=vlan.ambiente.id)
# Verify equipments related with all other environments
# that contains networks with same ip range
for env_id in env_ids:
# Equipments related to other environments
other_env_equips = EquipamentoAmbiente.objects.filter(
ambiente=env_id)
# Adjust to equipments
equip_list = list()
for equip_env in other_env_equips:
equip_list.append(equip_env.equipamento.id)
for env_equip in env_equips:
if env_equip.equipamento.id in equip_list:
# Filter testing
if other_env_equips[0].ambiente.filter is None or vlan.ambiente.filter is None:
raise NetworkIPRangeEnvError(
None, u'Um dos equipamentos associados com o ambiente desta rede também está associado com outro ambiente que tem uma rede com essa mesma faixa, adicione filtros nos ambientes se necessário.')
else:
# Test both environment's filters
tp_equip_list_one = list()
for fet in FilterEquipType.objects.filter(filter=vlan.ambiente.filter.id):
tp_equip_list_one.append(fet.equiptype)
tp_equip_list_two = list()
for fet in FilterEquipType.objects.filter(filter=other_env_equips[0].ambiente.filter.id):
tp_equip_list_two.append(fet.equiptype)
if env_equip.equipamento.tipo_equipamento not in tp_equip_list_one or env_equip.equipamento.tipo_equipamento not in tp_equip_list_two:
raise NetworkIPRangeEnvError(
None, u'Um dos equipamentos associados com o ambiente desta rede também está associado com outro ambiente que tem uma rede com essa mesma faixa, adicione filtros nos ambientes se necessário.')
# # Filter case 1 - end ##
# New NetworkIPv6
network_ip = NetworkIPv6()
# Set block by network generated
network_ip.block1, network_ip.block2, network_ip.block3, network_ip.block4, network_ip.block5, network_ip.block6, network_ip.block7, network_ip.block8 = str(
net.network.exploded).split(':')
# Set block by network generated
network_ip.block = net.prefixlen
# Set mask by network generated
network_ip.mask1, network_ip.mask2, network_ip.mask3, network_ip.mask4, network_ip.mask5, network_ip.mask6, network_ip.mask7, network_ip.mask8 = str(
net.netmask.exploded).split(':')
# Get all vlans environments from equipments of the current
# environment
ambiente = vlan.ambiente
equips = list()
envs = list()
envs_aux = list()
for env in ambiente.equipamentoambiente_set.all():
equips.append(env.equipamento)
for equip in equips:
for env in equip.equipamentoambiente_set.all():
if not env.ambiente_id in envs_aux:
envs.append(env.ambiente)
envs_aux.append(env.ambiente_id)
# Check subnet's
if version == IP_VERSION.IPv4[0]:
expl = split(net.network.exploded, ".")
else:
expl = split(net.network.exploded, ":")
expl.append(str(net.prefixlen))
ids_exclude = []
ids_all = []
network_ip_verify = IPNetwork(network)
for env in envs:
for vlan_obj in env.vlan_set.all():
ids_all.append(vlan_obj.id)
is_subnet = verify_subnet(
vlan_obj, network_ip_verify, version)
if not is_subnet:
ids_exclude.append(vlan_obj.id)
else:
if ambiente.filter_id == None or vlan_obj.ambiente.filter_id == None or int(vlan_obj.ambiente.filter_id) != int(ambiente.filter_id):
pass
else:
ids_exclude.append(vlan_obj.id)
# Ignore actual vlan
if envs != [] and long(id_vlan) not in ids_exclude:
ids_exclude.append(id_vlan)
# Check if have duplicated vlan's with same net range in an
# environment with shared equipment
if len(ids_all) != len(ids_exclude):
raise NetworkIPRangeEnvError(None)
# Set Vlan
network_ip.vlan = vlan
# Set Network Type
network_ip.network_type = net_type
# Set Environment VIP
network_ip.ambient_vip = env_vip
# Persist
try:
# Delete vlan's cache
destroy_cache_function([id_vlan])
network_ip.save(user)
list_equip_routers_ambient = EquipamentoAmbiente.objects.filter(
ambiente=network_ip.vlan.ambiente.id, is_router=True)
if list_equip_routers_ambient:
if version == IP_VERSION.IPv4[0]:
if network_ip.block < 31:
# Add Adds the first available ipv4 on all equipment
# that is configured as a router for the environment
# related to network
ip = Ip.get_first_available_ip(network_ip.id)
ip = str(ip).split('.')
ip_model = Ip()
ip_model.oct1 = ip[0]
ip_model.oct2 = ip[1]
ip_model.oct3 = ip[2]
ip_model.oct4 = ip[3]
ip_model.networkipv4_id = network_ip.id
ip_model.save(user)
for equip in list_equip_routers_ambient:
IpEquipamento().create(
user, ip_model.id, equip.equipamento.id)
else:
if network_ip.block < 127:
# Add Adds the first available ipv6 on all equipment
# that is configured as a router for the environment
# related to network
ipv6 = Ipv6.get_first_available_ip6(network_ip.id)
ipv6 = str(ipv6).split(':')
ipv6_model = Ipv6()
ipv6_model.block1 = ipv6[0]
ipv6_model.block2 = ipv6[1]
ipv6_model.block3 = ipv6[2]
ipv6_model.block4 = ipv6[3]
ipv6_model.block5 = ipv6[4]
ipv6_model.block6 = ipv6[5]
ipv6_model.block7 = ipv6[6]
ipv6_model.block8 = ipv6[7]
ipv6_model.networkipv6_id = network_ip.id
ipv6_model.save(user)
for equip in list_equip_routers_ambient:
Ipv6Equipament().create(
user, ipv6_model.id, equip.equipamento.id)
except Exception, e:
raise IpError(e, u'Error persisting Network.')