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74 lines
2.5 KiB
Python
74 lines
2.5 KiB
Python
#!/usr/bin/env python
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import xml.etree.ElementTree as ET
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from mininet.topo import Topo
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from mininet.link import TCLink
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class GraphmlTopo(Topo):
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def build(self, filename='topology.graphml'):
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positions = dict()
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try:
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graph = ET.parse(filename).getroot()
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except Exception as error:
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print('oops: ', error)
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exit(1)
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for node in graph.iter('{http://graphml.graphdrawing.org/xmlns}node'):
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node_id = int(node.get('id')) + 1
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privateDirs = ['/var/log','/var/run']
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self.addHost('h%i' % node_id, privateDirs=privateDirs)
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x_pos = node.find('.//data[@key="x"]')
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y_pos = node.find('.//data[@key="y"]')
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positions[node_id] = (x_pos, y_pos)
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for link in graph.iter('{http://graphml.graphdrawing.org/xmlns}edge'):
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link_id = int(link.get('id')) + 1
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source = int(link.get('source')) + 1
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target = int(link.get('target')) + 1
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linkopts = self.format_intf_params(source, target, link_id)
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# dict(bw=10, delay='5ms', loss=20, max_queue_size=1000, use_htb=True)
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# linkopts.update(self.)
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# to implement a function which from nodes positions return linkopts
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self.addLink('h%i' % source, 'h%i' % target, cls=TCLink, **linkopts)
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def format_intf_params(self, source_id, target_id, link_id):
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return dict()
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class GraphmlTopoUniqueSubnet(GraphmlTopo):
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def format_intf_params(self, source_id, target_id, link_id):
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intf_name_s = 'h%i-eth%i' % (source_id, link_id)
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intf_name_t = 'h%i-eth%i' % (target_id, link_id)
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addr_s = '00:00:00:00:%02i:%02i' % (source_id, link_id)
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addr_t = '00:00:00:00:%02i:%02i' % (target_id, link_id)
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ip_s = '10.0.%i.%i/16' % (source_id, link_id)
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ip_t = '10.0.%i.%i/16' % (target_id, link_id)
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return {'addr1' : addr_s, 'params1' : {'ip': ip_s},
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'addr2' : addr_t, 'params2' : {'ip': ip_t}}
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class GraphmlTopoDifferentSubnet(GraphmlTopo):
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def format_intf_params(self, source_id, target_id, link_id):
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addr_s = '00:00:00:00:%02i:%02i' % (source_id, link_id)
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addr_t = '00:00:00:00:%02i:%02i' % (target_id, link_id)
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ip_s = '10.0.%i.%i/24' % (link_id, source_id)
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ip_t = '10.0.%i.%i/24' % (link_id, target_id)
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return {'addr1' : addr_s, 'params1' : {'ip': ip_s},
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'addr2' : addr_t, 'params2' : {'ip': ip_t}}
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