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-rw-r--r--resources/libraries/python/IPv4NodeAddress.py102
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diff --git a/resources/libraries/python/IPv4NodeAddress.py b/resources/libraries/python/IPv4NodeAddress.py
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-# Copyright (c) 2018 Cisco and/or its affiliates.
-# 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.
-
-"""Robot framework variable file.
-
-Create dictionary variable nodes_ipv4_addr of IPv4 addresses from
-available networks.
-"""
-
-from ipaddress import IPv4Network
-
-from resources.libraries.python.topology import Topology
-
-# Default list of IPv4 subnets
-IPV4_NETWORKS = ['192.168.{}.0/24'.format(i) for i in range(1, 100)]
-
-
-class IPv4NetworkGenerator(object):
- """IPv4 network generator.
-
- TODO: Conform to https://docs.python.org/2/library/stdtypes.html#typeiter
- """
-
- def __init__(self, networks):
- """Populate internal list of valid networks.
-
- :param networks: List of strings containing IPv4 subnet
- with prefix length.
- :type networks: list
- :raise RuntimeError: If no IPv4 networks are added.
- """
- self._networks = []
- for network in networks:
- net = IPv4Network(unicode(network))
- self._networks.append(net)
- if not self._networks:
- raise RuntimeError("No IPv4 networks")
-
- def next_network(self):
- """Pop and return network from internal list.
-
- :returns: Next network in form (IPv4Network, subnet).
- :raises StopIteration: If there are no more elements.
- """
- if self._networks:
- return self._networks.pop()
- else:
- raise StopIteration()
-
-
-def get_variables(nodes, networks=IPV4_NETWORKS[:]):
- """Special robot framework method that returns dictionary nodes_ipv4_addr,
- mapping of node and interface name to IPv4 address.
-
- :param nodes: Nodes of the test topology.
- :param networks: List of available IPv4 networks.
- :type nodes: dict
- :type networks: list
-
- .. note::
- Robot framework calls it automatically.
- """
- topo = Topology()
- links = topo.get_links(nodes)
-
- if len(links) > len(networks):
- raise Exception('Not enough available IPv4 networks for topology.')
-
- ip4_n = IPv4NetworkGenerator(networks)
-
- nets = {}
-
- for link in links:
- ip4_net = ip4_n.next_network()
- net_hosts = ip4_net.hosts()
- port_idx = 0
- ports = {}
- for node in nodes.values():
- if_key = topo.get_interface_by_link_name(node, link)
- if_name = topo.get_interface_name(node, if_key)
- if if_name is not None:
- port = {'addr': str(next(net_hosts)),
- 'node': node['host'],
- 'if': if_name}
- port_idx += 1
- port_id = 'port{0}'.format(port_idx)
- ports.update({port_id: port})
- nets.update({link: {'net_addr': str(ip4_net.network_address),
- 'prefix': ip4_net.prefixlen,
- 'ports': ports}})
-
- return {'DICT__nodes_ipv4_addr': nets}