old_contents: # Copyright 2016 Hewlett Packard Enterprise Development Company
  #
  # Licensed under the Apache License, Version 2.0 (the "License"); you may
  # not use this file except in compliance with the License. You may obtain
  # a copy of the License at
  #
  #     http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
  # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
  # License for the specific language governing permissions and limitations
  # under the License.
  
  import netaddr
  
  from tempest.lib import exceptions as lib_exc
  
  
  def get_unused_ip_addresses(ports_client, subnets_client,
                              network_id, subnet_id, count):
  
      """Return a list with the specified number of unused IP addresses
  
      This method uses the given ports_client to find the specified number of
      unused IP addresses on the given subnet using the supplied subnets_client
      """
  
      ports = ports_client.list_ports(network_id=network_id)['ports']
      subnet = subnets_client.show_subnet(subnet_id)
      ip_net = netaddr.IPNetwork(subnet['subnet']['cidr'])
      subnet_set = netaddr.IPSet(ip_net.iter_hosts())
      alloc_set = netaddr.IPSet()
  
      # prune out any addresses already allocated to existing ports
      for port in ports:
          for fixed_ip in port.get('fixed_ips'):
              alloc_set.add(fixed_ip['ip_address'])
  
      av_set = subnet_set - alloc_set
      addrs = []
      for cidr in reversed(av_set.iter_cidrs()):
          for ip in reversed(cidr):
              addrs.append(str(ip))
              if len(addrs) == count:
                  return addrs
      msg = "Insufficient IP addresses available"
      raise lib_exc.BadRequest(message=msg)
  
new_contents: # Copyright 2016 Hewlett Packard Enterprise Development Company
  #
  # Licensed under the Apache License, Version 2.0 (the "License"); you may
  # not use this file except in compliance with the License. You may obtain
  # a copy of the License at
  #
  #     http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
  # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
  # License for the specific language governing permissions and limitations
  # under the License.
  
  import netaddr
  
  from tempest.lib import exceptions as lib_exc
  
  
  def get_unused_ip_addresses(ports_client, subnets_client,
                              network_id, subnet_id, count):
  
      """Return a list with the specified number of unused IP addresses
  
      This method uses the given ports_client to find the specified number of
      unused IP addresses on the given subnet using the supplied subnets_client
      """
  
      ports = ports_client.list_ports(network_id=network_id)['ports']
      subnet = subnets_client.show_subnet(subnet_id)
      ip_net = netaddr.IPNetwork(subnet['subnet']['cidr'])
      subnet_set = netaddr.IPSet(ip_net.iter_hosts())
      alloc_set = netaddr.IPSet()
  
      # prune out any addresses already allocated to existing ports
      for port in ports:
          for fixed_ip in port.get('fixed_ips'):
              alloc_set.add(fixed_ip['ip_address'])
  
      # exclude gateway_ip of subnet
      gateway_ip = subnet['subnet']['gateway_ip']
      if gateway_ip:
          alloc_set.add(gateway_ip)
  
      av_set = subnet_set - alloc_set
      addrs = []
      for cidr in reversed(av_set.iter_cidrs()):
          for ip in reversed(cidr):
              addrs.append(str(ip))
              if len(addrs) == count:
                  return addrs
      msg = "Insufficient IP addresses available"
      raise lib_exc.BadRequest(message=msg)
  
subject: Exclude gateway_ip of subnet in get_unused_ip_addresses