def _config_net_topology(self, conf):
"""
Initialize and populate all the network related elements, like
reserving ips and populating network specs of the given confiiguration
spec
Args:
conf (dict): Configuration spec to initalize
Returns:
None
"""
self._init_net_specs(conf)
self._check_predefined_subnets(conf)
allocated_subnets = self._allocate_subnets(conf)
try:
self._register_preallocated_ips(conf)
self._allocate_ips_to_nics(conf)
except:
for subnet in allocated_subnets:
subnet_lease.release(subnet)
raise
def _allocate_subnets(self, conf):
"""
Allocate all the subnets needed by the given configuration spec
Args:
conf (dict): Configuration spec where to get the nets definitions
from
Returns:
tuple(list, dict): allocated subnets and modified conf
"""
allocated_subnets = []
try:
for net_spec in conf.get('nets', {}).itervalues():
if 'gw' in net_spec or net_spec['type'] != 'nat':
continue
net_spec['gw'] = subnet_lease.acquire(self.paths.uuid())
allocated_subnets.append(net_spec['gw'])
except:
for subnet in allocated_subnets:
subnet_lease.release(subnet)
raise
return allocated_subnets, conf
def _allocate_subnets(self, conf):
"""
Allocate all the subnets needed by the given configuration spec
Args:
conf (dict): Configuration spec where to get the nets definitions
from
Returns:
tuple(list, dict): allocated subnets and modified conf
"""
allocated_subnets = []
try:
for net_spec in conf.get('nets', {}).itervalues():
if 'gw' in net_spec or net_spec['type'] != 'nat':
continue
net_spec['gw'] = subnet_lease.acquire(self.paths.uuid())
allocated_subnets.append(net_spec['gw'])
except:
for subnet in allocated_subnets:
subnet_lease.release(subnet)
return allocated_subnets, conf
def _config_net_topology(self, conf):
"""
Initialize and populate all the network related elements, like
reserving ips and populating network specs of the given confiiguration
spec
Args:
conf (dict): Configuration spec to initalize
Returns:
None
"""
conf = self._init_net_specs(conf)
self._check_predefined_subnets(conf)
allocated_subnets, conf = self._allocate_subnets(conf)
try:
self._register_preallocated_ips(conf)
self._allocate_ips_to_nics(conf)
except:
for subnet in allocated_subnets:
subnet_lease.release(subnet)
raise
return conf