2 from sfa.util.xrn import hrn_to_urn, urn_to_hrn
3 from sfa.rspecs.rspec_version import BaseVersion
4 from sfa.rspecs.rspec_elements import RSpecElement, RSpecElements
5 from sfa.rspecs.elements.versions.pgv2Link import PGv2Link
7 class SFAv1(BaseVersion):
17 template = '<RSpec type="%s"></RSpec>' % type
19 def get_network_elements(self):
20 return self.xml.xpath('//network')
22 def get_networks(self):
23 return self.xml.xpath('//network[@name]/@name')
25 def get_node_element(self, hostname, network=None):
27 names = self.xml.xpath('//network[@name="%s"]//node/hostname' % network)
29 names = self.xml.xpath('//node/hostname')
31 if str(name.text).strip() == hostname:
32 return name.getparent()
35 def get_node_elements(self, network=None):
37 return self.xml.xpath('//network[@name="%s"]//node' % network)
39 return self.xml.xpath('//node')
41 def get_nodes(self, network=None):
43 nodes = self.xml.xpath('//node/hostname/text()')
45 nodes = self.xml.xpath('//network[@name="%s"]//node/hostname/text()' % network)
47 nodes = [node.strip() for node in nodes]
50 def get_nodes_with_slivers(self, network = None):
52 nodes = self.xml.xpath('//network[@name="%s"]//node[sliver]/hostname/text()' % network)
54 nodes = self.xml.xpath('//node[sliver]/hostname/text()')
56 nodes = [node.strip() for node in nodes]
59 def get_nodes_without_slivers(self, network=None):
60 xpath_nodes_without_slivers = '//node[not(sliver)]/hostname/text()'
61 xpath_nodes_without_slivers_in_network = '//network[@name="%s"]//node[not(sliver)]/hostname/text()'
63 return self.xml.xpath('//network[@name="%s"]//node[not(sliver)]/hostname/text()' % network)
65 return self.xml.xpath('//node[not(sliver)]/hostname/text()')
67 def attributes_list(self, elem):
68 # convert a list of attribute tags into list of tuples
69 # (tagnme, text_value)
73 opts.append((e.tag, str(e.text).strip()))
76 def get_default_sliver_attributes(self, network=None):
78 defaults = self.xml.xpath("//network[@name='%s']/sliver_defaults" % network)
80 defaults = self.xml.xpath("//sliver_defaults")
81 if isinstance(defaults, list) and defaults:
82 defaults = defaults[0]
83 return self.attributes_list(defaults)
85 def get_sliver_attributes(self, hostname, network=None):
87 node = self.get_node_element(hostname, network)
88 #sliver = node.find("sliver")
89 slivers = node.xpath('./sliver')
90 if isinstance(slivers, list) and slivers:
91 attributes = self.attributes_list(slivers[0])
94 def get_slice_attributes(self, network=None):
96 nodes_with_slivers = self.get_nodes_with_slivers(network)
97 for default_attribute in self.get_default_sliver_attributes(network):
98 attribute = {'name': str(default_attribute[0]), 'value': str(default_attribute[1]), 'node_id': None}
99 slice_attributes.append(attribute)
100 for node in nodes_with_slivers:
101 sliver_attributes = self.get_sliver_attributes(node, network)
102 for sliver_attribute in sliver_attributes:
103 attribute = {'name': str(sliver_attribute[0]), 'value': str(sliver_attribute[1]), 'node_id': node}
104 slice_attributes.append(attribute)
105 return slice_attributes
107 def get_site_nodes(self, siteid, network=None):
109 nodes = self.xml.xpath('//network[@name="%s"]/site[@id="%s"]/node/hostname/text()' % \
112 nodes = self.xml.xpath('//site[@id="%s"]/node/hostname/text()' % siteid)
115 def get_links(self, network=None):
116 return PGv2Link.get_links(self.xml)
118 def get_link_requests(self):
119 return PGv2Link.get_links(self.xml)
121 def get_link(self, fromnode, tonode, network=None):
122 fromsite = fromnode.getparent()
123 tosite = tonode.getparent()
124 fromid = fromsite.get("id")
125 toid = tosite.get("id")
127 query = "//network[@name='%s']" % network + "/link[@endpoints = '%s %s']"
129 query = "//link[@endpoints = '%s %s']"
131 results = self.rspec.xpath(query % (fromid, toid))
133 results = self.rspec.xpath(query % (toid, fromid))
136 def query_links(self, fromnode, tonode, network=None):
137 return get_link(fromnode, tonode, network)
139 def get_vlinks(self, network=None):
142 vlinks = self.xml.xpath("//network[@name='%s']//vlink" % network)
144 vlinks = self.xml.xpath("//vlink")
146 endpoints = vlink.get("endpoints")
147 (end1, end2) = endpoints.split()
149 node1 = self.xml.xpath('//network[@name="%s"]//node[@id="%s"]/hostname/text()' % \
151 node2 = self.xml.xpath('//network[@name="%s"]//node[@id="%s"]/hostname/text()' % \
154 node1 = self.xml.xpath('//node[@id="%s"]/hostname/text()' % end1)[0]
155 node2 = self.xml.xpath('//node[@id="%s"]/hostname/text()' % end2)[0]
156 desc = "%s <--> %s" % (node1, node2)
157 kbps = vlink.find("kbps")
158 vlinklist.append((endpoints, desc, kbps.text))
161 def get_vlink(self, endponts, network=None):
163 query = "//network[@name='%s']//vlink[@endpoints = '%s']" % (network, endpoints)
165 query = "//vlink[@endpoints = '%s']" % (network, endpoints)
166 results = self.rspec.xpath(query)
169 def query_vlinks(self, endpoints, network=None):
170 return get_vlink(endpoints,network)
177 def add_network(self, network):
178 network_tags = self.xml.xpath('//network[@name="%s"]' % network)
180 network_tag = etree.SubElement(self.xml.root, 'network', name=network)
182 network_tag = network_tags[0]
185 def add_nodes(self, nodes, network = None, no_dupes=False):
186 if not isinstance(nodes, list):
190 self.get_node_element(node['hostname']):
191 # node already exists
194 network_tag = self.xml.root
195 if 'network' in node:
196 network = node['network']
197 network_tag = self.add_network(network)
199 node_tag = etree.SubElement(network_tag, 'node')
200 if 'network' in node:
201 node_tag.set('component_manager_id', hrn_to_urn(network, 'authority+sa'))
203 node_tag.set('component_id', node['urn'])
204 if 'site_urn' in node:
205 node_tag.set('site_id', node['site_urn'])
206 if 'node_id' in node:
207 node_tag.set('node_id', 'n'+str(node['node_id']))
208 if 'boot_state' in node:
209 node_tag.set('boot_state', node['boot_state'])
210 if 'hostname' in node:
211 node_tag.set('component_name', node['hostname'])
212 hostname_tag = etree.SubElement(node_tag, 'hostname').text = node['hostname']
213 if 'interfaces' in node:
215 for interface in node['interfaces']:
216 if 'bwlimit' in interface and interface['bwlimit']:
217 bwlimit = etree.SubElement(node_tag, 'bw_limit', units='kbps').text = str(interface['bwlimit']/1000)
218 comp_id = hrn_to_urn(network, 'pc%s:eth%s' % (node['node_id'], i))
219 interface_tag = etree.SubElement(node_tag, 'interface', component_id=comp_id)
221 if 'bw_unallocated' in node:
222 bw_unallocated = etree.SubElement(node_tag, 'bw_unallocated', units='kbps').text = str(node['bw_unallocated']/1000)
224 for tag in node['tags']:
225 # expose this hard wired list of tags, plus the ones that are marked 'sfa' in their category
226 if tag['tagname'] in ['fcdistro', 'arch'] or 'sfa' in tag['category'].split('/'):
227 tag_element = etree.SubElement(node_tag, tag['tagname']).text=tag['value']
230 longitude = str(node['site']['longitude'])
231 latitude = str(node['site']['latitude'])
232 location = etree.SubElement(node_tag, 'location', country='unknown', \
233 longitude=longitude, latitude=latitude)
235 def merge_node(self, source_node_tag, network, no_dupes=False):
236 if no_dupes and self.get_node_element(node['hostname']):
237 # node already exists
240 network_tag = self.add_network(network)
241 network_tag.append(deepcopy(source_node_tag))
243 def add_interfaces(self, interfaces):
246 def add_links(self, links):
247 PGv2Link.add_links(self.xml, links)
249 def add_slivers(self, slivers, network=None, sliver_urn=None, no_dupes=False, append=False):
250 # add slice name to network tag
251 network_tags = self.xml.xpath('//network')
253 network_tag = network_tags[0]
254 network_tag.set('slice', urn_to_hrn(sliver_urn)[0])
256 all_nodes = self.get_nodes()
257 nodes_with_slivers = [sliver['hostname'] for sliver in slivers]
258 nodes_without_slivers = set(all_nodes).difference(nodes_with_slivers)
261 for sliver in slivers:
262 node_elem = self.get_node_element(sliver['hostname'], network)
263 if not node_elem: continue
264 sliver_elem = etree.SubElement(node_elem, 'sliver')
266 for tag in sliver['tags']:
267 etree.SubElement(sliver_elem, tag['tagname']).text = value=tag['value']
269 # remove all nodes without slivers
271 for node in nodes_without_slivers:
272 node_elem = self.get_node_element(node)
273 parent = node_elem.getparent()
274 parent.remove(node_elem)
276 def remove_slivers(self, slivers, network=None, no_dupes=False):
277 for sliver in slivers:
278 node_elem = self.get_node_element(sliver['hostname'], network)
279 sliver_elem = node_elem.find('sliver')
280 if sliver_elem != None:
281 node_elem.remove(sliver_elem)
283 def add_default_sliver_attribute(self, name, value, network=None):
285 defaults = self.xml.xpath("//network[@name='%s']/sliver_defaults" % network)
287 defaults = self.xml.xpath("//sliver_defaults" % network)
289 network_tag = self.xml.xpath("//network[@name='%s']" % network)
290 if isinstance(network_tag, list):
291 network_tag = network_tag[0]
292 defaults = self.xml.add_element('sliver_defaults', attrs={}, parent=network_tag)
293 elif isinstance(defaults, list):
294 defaults = defaults[0]
295 self.xml.add_attribute(defaults, name, value)
297 def add_sliver_attribute(self, hostname, name, value, network=None):
298 node = self.get_node_element(hostname, network)
299 sliver = node.find("sliver")
300 self.xml.add_attribute(sliver, name, value)
302 def remove_default_sliver_attribute(self, name, value, network=None):
304 defaults = self.xml.xpath("//network[@name='%s']/sliver_defaults" % network)
306 defaults = self.xml.xpath("//sliver_defaults" % network)
307 self.xml.remove_attribute(defaults, name, value)
309 def remove_sliver_attribute(self, hostname, name, value, network=None):
310 node = self.get_node_element(hostname, network)
311 sliver = node.find("sliver")
312 self.xml.remove_attribute(sliver, name, value)
314 def add_vlink(self, fromhost, tohost, kbps, network=None):
315 fromnode = self.get_node_element(fromhost, network)
316 tonode = self.get_node_element(tohost, network)
317 links = self.get_link(fromnode, tonode, network)
320 vlink = etree.SubElement(link, "vlink")
321 fromid = fromnode.get("id")
322 toid = tonode.get("id")
323 vlink.set("endpoints", "%s %s" % (fromid, toid))
324 self.xml.add_attribute(vlink, "kbps", kbps)
327 def remove_vlink(self, endpoints, network=None):
328 vlinks = self.query_vlinks(endpoints, network)
330 vlink.getparent().remove(vlink)
333 def merge(self, in_rspec):
335 Merge contents for specified rspec with current rspec
338 from sfa.rspecs.rspec import RSpec
339 if isinstance(in_rspec, RSpec):
342 rspec = RSpec(in_rspec)
343 if rspec.version.type.lower() == 'protogeni':
344 from sfa.rspecs.rspec_converter import RSpecConverter
345 in_rspec = RSpecConverter.to_sfa_rspec(rspec.toxml())
346 rspec = RSpec(in_rspec)
348 # just copy over all networks
349 current_networks = self.get_networks()
350 networks = rspec.version.get_network_elements()
351 for network in networks:
352 current_network = network.get('name')
353 if current_network and current_network not in current_networks:
354 self.xml.root.append(network)
355 current_networks.append(current_network)
357 if __name__ == '__main__':
358 from sfa.rspecs.rspec import RSpec
359 from sfa.rspecs.rspec_elements import *
360 r = RSpec('/tmp/resources.rspec')
361 r.load_rspec_elements(SFAv1.elements)
362 print r.get(RSpecElements.NODE)