- for if_ref in [link['interface1'], link['interface2']]:
- link_elem.add_instance('interface_ref', if_ref, Interface.fields)
- # set property elements
- prop1 = link_elem.add_element('property', source_id = link['interface1']['component_id'],
- dest_id = link['interface2']['component_id'], capacity=link['capacity'],
- latency=link['latency'], packet_loss=link['packet_loss'])
- prop2 = link_elem.add_element('property', source_id = link['interface2']['component_id'],
- dest_id = link['interface1']['component_id'], capacity=link['capacity'],
- latency=link['latency'], packet_loss=link['packet_loss'])
+ if link.get('interface1') and link.get('interface2'):
+ for if_ref in [link['interface1'], link['interface2']]:
+ link_elem.add_instance('interface_ref', if_ref, Interface.fields)
+ # set property elements
+ prop1 = link_elem.add_element('property', source_id = link['interface1']['component_id'],
+ dest_id = link['interface2']['component_id'], capacity=link['capacity'],
+ latency=link['latency'], packet_loss=link['packet_loss'])
+ prop2 = link_elem.add_element('property', source_id = link['interface2']['component_id'],
+ dest_id = link['interface1']['component_id'], capacity=link['capacity'],
+ latency=link['latency'], packet_loss=link['packet_loss'])