def obtain_lease(self):
"""Perform dhcp discovery in a sandboxed environment if possible.
@return: A dict representing dhcp options on the most recent lease
obtained from the dhclient discovery if run, otherwise an error
is raised.
@raises: NoDHCPLeaseError if no leases could be obtained.
"""
if self.lease:
return self.lease
try:
leases = maybe_perform_dhcp_discovery(self.iface)
except InvalidDHCPLeaseFileError:
raise NoDHCPLeaseError()
if not leases:
raise NoDHCPLeaseError()
self.lease = leases[-1]
LOG.debug("Received dhcp lease on %s for %s/%s",
self.lease['interface'], self.lease['fixed-address'],
self.lease['subnet-mask'])
nmap = {'interface': 'interface', 'ip': 'fixed-address',
'prefix_or_mask': 'subnet-mask',
'broadcast': 'broadcast-address',
'router': 'routers'}
kwargs = dict([(k, self.lease.get(v)) for k, v in nmap.items()])
if not kwargs['broadcast']:
kwargs['broadcast'] = bcip(kwargs['prefix_or_mask'], kwargs['ip'])
ephipv4 = EphemeralIPv4Network(**kwargs)
ephipv4.__enter__()
self._ephipv4 = ephipv4
return self.lease
def obtain_lease(self):
"""Perform dhcp discovery in a sandboxed environment if possible.
@return: A dict representing dhcp options on the most recent lease
obtained from the dhclient discovery if run, otherwise an error
is raised.
@raises: NoDHCPLeaseError if no leases could be obtained.
"""
if self.lease:
return self.lease
leases = maybe_perform_dhcp_discovery(self.iface, self.dhcp_log_func)
if not leases:
raise NoDHCPLeaseError()
self.lease = leases[-1]
LOG.debug(
"Received dhcp lease on %s for %s/%s",
self.lease["interface"],
self.lease["fixed-address"],
self.lease["subnet-mask"],
)
nmap = {
"interface":
"interface",
"ip":
"fixed-address",
"prefix_or_mask":
"subnet-mask",
"broadcast":
"broadcast-address",
"static_routes": [
"rfc3442-classless-static-routes",
"classless-static-routes",
],
"router":
"routers",
}
kwargs = self.extract_dhcp_options_mapping(nmap)
if not kwargs["broadcast"]:
kwargs["broadcast"] = mask_and_ipv4_to_bcast_addr(
kwargs["prefix_or_mask"], kwargs["ip"])
if kwargs["static_routes"]:
kwargs["static_routes"] = parse_static_routes(
kwargs["static_routes"])
if self.connectivity_url_data:
kwargs["connectivity_url_data"] = self.connectivity_url_data
ephipv4 = EphemeralIPv4Network(**kwargs)
ephipv4.__enter__()
self._ephipv4 = ephipv4
return self.lease
def obtain_lease(self):
"""Perform dhcp discovery in a sandboxed environment if possible.
@return: A dict representing dhcp options on the most recent lease
obtained from the dhclient discovery if run, otherwise an error
is raised.
@raises: NoDHCPLeaseError if no leases could be obtained.
"""
if self.lease:
return self.lease
try:
leases = maybe_perform_dhcp_discovery(self.iface,
self.dhcp_log_func)
except InvalidDHCPLeaseFileError:
raise NoDHCPLeaseError()
if not leases:
raise NoDHCPLeaseError()
self.lease = leases[-1]
LOG.debug("Received dhcp lease on %s for %s/%s",
self.lease['interface'], self.lease['fixed-address'],
self.lease['subnet-mask'])
nmap = {
'interface':
'interface',
'ip':
'fixed-address',
'prefix_or_mask':
'subnet-mask',
'broadcast':
'broadcast-address',
'static_routes':
['rfc3442-classless-static-routes', 'classless-static-routes'],
'router':
'routers'
}
kwargs = self.extract_dhcp_options_mapping(nmap)
if not kwargs['broadcast']:
kwargs['broadcast'] = bcip(kwargs['prefix_or_mask'], kwargs['ip'])
if kwargs['static_routes']:
kwargs['static_routes'] = (parse_static_routes(
kwargs['static_routes']))
if self.connectivity_url:
kwargs['connectivity_url'] = self.connectivity_url
ephipv4 = EphemeralIPv4Network(**kwargs)
ephipv4.__enter__()
self._ephipv4 = ephipv4
return self.lease
def __enter__(self):
try:
leases = maybe_perform_dhcp_discovery(self.iface)
except InvalidDHCPLeaseFileError:
raise NoDHCPLeaseError()
if not leases:
raise NoDHCPLeaseError()
lease = leases[-1]
LOG.debug("Received dhcp lease on %s for %s/%s", lease['interface'],
lease['fixed-address'], lease['subnet-mask'])
nmap = {
'interface': 'interface',
'ip': 'fixed-address',
'prefix_or_mask': 'subnet-mask',
'broadcast': 'broadcast-address',
'router': 'routers'
}
kwargs = dict([(k, lease.get(v)) for k, v in nmap.items()])
if not kwargs['broadcast']:
kwargs['broadcast'] = bcip(kwargs['prefix_or_mask'], kwargs['ip'])
ephipv4 = EphemeralIPv4Network(**kwargs)
ephipv4.__enter__()
self._ephipv4 = ephipv4
return lease