def network_exists_optionally_contains_subnet(network_id, subnet_id=None):
"""Raises an exception when a network does not exist.
If a subnet is provided, also validate the network contains that subnet.
"""
network_driver = utils.get_network_driver()
try:
network = network_driver.get_network(network_id)
except Exception:
raise exceptions.InvalidSubresource(resource='Network', id=network_id)
if subnet_id:
if not network.subnets or subnet_id not in network.subnets:
raise exceptions.InvalidSubresource(resource='Subnet',
id=subnet_id)
return network
def qos_policy_exists(qos_policy_id):
network_driver = utils.get_network_driver()
try:
qos_policy = network_driver.get_qos_policy(qos_policy_id)
except Exception:
raise exceptions.InvalidSubresource(resource='qos_policy',
id=qos_policy_id)
return qos_policy
def subnet_exists(subnet_id):
"""Raises an exception when a subnet does not exist."""
network_driver = utils.get_network_driver()
try:
subnet = network_driver.get_subnet(subnet_id)
except Exception:
raise exceptions.InvalidSubresource(resource='Subnet', id=subnet_id)
return subnet
def port_exists(port_id):
"""Raises an exception when a port does not exist."""
network_driver = utils.get_network_driver()
try:
port = network_driver.get_port(port_id)
except Exception:
raise exceptions.InvalidSubresource(resource='Port', id=port_id)
return port
def qos_policy_exists(qos_policy_id):
network_driver = utils.get_network_driver()
qos_extension_enabled(network_driver)
try:
qos_policy = network_driver.get_qos_policy(qos_policy_id)
except Exception as e:
raise exceptions.InvalidSubresource(resource='qos_policy',
id=qos_policy_id) from e
return qos_policy
def validate_flavor(self, flavor_id):
"""Validates that a flavor exists in nova.
:param flavor_id: ID of the flavor to lookup in nova.
:raises: NotFound
:returns: None
"""
try:
self.flavor_manager.get(flavor_id)
except nova_exceptions.NotFound:
LOG.info('Flavor %s was not found in nova.', flavor_id)
raise exceptions.InvalidSubresource(resource='Nova flavor',
id=flavor_id)
except Exception as e:
LOG.exception('Nova reports a failure getting flavor details for '
'flavor ID %s: %s', flavor_id, e)
raise
def validate_availability_zone(self, availability_zone):
"""Validates that an availability zone exists in nova.
:param availability_zone: Name of the availability zone to lookup.
:raises: NotFound
:returns: None
"""
try:
compute_zones = [
a.zoneName for a in self.availability_zone_manager.list(
detailed=False)]
if availability_zone not in compute_zones:
LOG.info('Availability zone %s was not found in nova. %s',
availability_zone, compute_zones)
raise exceptions.InvalidSubresource(
resource='Nova availability zone', id=availability_zone)
except Exception as e:
LOG.exception('Nova reports a failure getting listing '
'availability zones: %s', e)
raise
