diff options
Diffstat (limited to 'resources/libraries/python/topology.py')
| -rw-r--r-- | resources/libraries/python/topology.py | 55 |
1 files changed, 43 insertions, 12 deletions
diff --git a/resources/libraries/python/topology.py b/resources/libraries/python/topology.py index e05f4ef732..fba2dcb189 100644 --- a/resources/libraries/python/topology.py +++ b/resources/libraries/python/topology.py @@ -377,16 +377,19 @@ class Topology: return links @staticmethod - def _get_interface_by_key_value(node, key, value): + def _get_interface_by_key_value(node, key, value, subsequent=False): """Return node interface key from topology file according to key and value. :param node: The node dictionary. :param key: Key by which to select the interface. :param value: Value that should be found using the key. + :param subsequent: Use second interface of the link. Useful for + back-to-back links. Default: False :type node: dict :type key: string :type value: string + :type subsequent: bool :returns: Interface key from topology file :rtype: string """ @@ -396,8 +399,11 @@ class Topology: k_val = if_val.get(key) if k_val is not None: if k_val == value: - retval = if_key - break + if subsequent: + subsequent = False + else: + retval = if_key + break return retval @staticmethod @@ -417,7 +423,7 @@ class Topology: return Topology._get_interface_by_key_value(node, u"name", iface_name) @staticmethod - def get_interface_by_link_name(node, link_name): + def get_interface_by_link_name(node, link_name, subsequent=False): """Return interface key of link on node. This method returns the interface name associated with a given link @@ -425,12 +431,17 @@ class Topology: :param node: The node topology dictionary. :param link_name: Name of the link that a interface is connected to. + :param subsequent: Use second interface of the link. Useful for + back-to-back links. Default: False :type node: dict :type link_name: string + :type subsequent: bool :returns: Interface key of the interface connected to the given link. :rtype: str """ - return Topology._get_interface_by_key_value(node, u"link", link_name) + return Topology._get_interface_by_key_value( + node, u"link", link_name, subsequent=subsequent + ) def get_interfaces_by_link_names(self, node, link_names): """Return dictionary of dictionaries {"interfaceN", interface name}. @@ -836,13 +847,15 @@ class Topology: return None @staticmethod - def _get_node_active_link_names(node, filter_list=None): + def _get_node_active_link_names(node, filter_list=None, topo_has_dut=True): """Return list of link names that are other than mgmt links. :param node: Node topology dictionary. :param filter_list: Link filter criteria. + :param topo_has_dut: Whether we require back-to-back links. :type node: dict :type filter_list: list of strings + :type topo_has_dut: bool :returns: List of link names occupied by the node. :rtype: None or list of string """ @@ -862,6 +875,17 @@ class Topology: link_names.append(interface[u"link"]) if not link_names: link_names = None + if not topo_has_dut: + new_link_names = list() + for link_name in link_names: + count = 0 + for interface in interfaces.values(): + link = interface.get(u"link", None) + if link == link_name: + count += 1 + if count == 2: + new_link_names.append(link_name) + link_names = new_link_names return link_names def get_active_connecting_links( @@ -880,12 +904,19 @@ class Topology: :rtype: list """ - node1_links = self._get_node_active_link_names( - node1, filter_list=filter_list_node1 - ) - node2_links = self._get_node_active_link_names( - node2, filter_list=filter_list_node2 - ) + if node1 != node2: + node1_links = self._get_node_active_link_names( + node1, filter_list=filter_list_node1 + ) + node2_links = self._get_node_active_link_names( + node2, filter_list=filter_list_node2 + ) + else: + # Looking for back-to-back links. + node1_links = self._get_node_active_link_names( + node1, filter_list=filter_list_node1, topo_has_dut=False + ) + node2_links = node1_links connecting_links = None if node1_links is None: |