3 from sfa.util.rspec import RSpec
6 from sfa.util.namespace import hrn_to_pl_slicename, hrn_to_urn
7 from sfa.util.xrn import urn_to_hrn, get_authority
8 from sfa.util.rspec import *
9 from sfa.util.specdict import *
10 from sfa.util.faults import *
11 from sfa.util.storage import *
12 from sfa.util.policy import Policy
13 from sfa.server.aggregate import Aggregates
14 from sfa.server.registry import Registries
15 from sfa.util.faults import *
17 import xml.dom.minidom
19 SFA_MAX_CONF_FILE = '/etc/sfa/max_allocations'
20 SFA_MAX_DEFAULT_RSPEC = '/etc/sfa/max_physical.xml'
21 SFA_MAX_CANNED_RSPEC = '/etc/sfa/max_physical_canned.xml'
25 class SfaOutOfResource(SfaFault):
26 def __init__(self, interface):
27 faultString = "Interface " + interface + " not available"
28 SfaFault.__init__(self, 100, faultString, '')
30 class SfaNoPairRSpec(SfaFault):
31 def __init__(self, interface, interface2):
32 faultString = "Interface " + interface + " should be paired with " + interface2
33 SfaFault.__init__(self, 100, faultString, '')
35 # Returns a mapping from interfaces to the nodes they lie on and their peer interfaces
38 def get_interface_map():
40 r.parseFile(SFA_MAX_DEFAULT_RSPEC)
42 capacity = rspec['rspec']['capacity']
43 netspec = capacity[0]['netspec'][0]
45 for n in netspec['nodespec']:
52 if (linkdefs.has_key(linkid)):
53 linkdefs[linkid].extend([(nodename,ifname)])
55 linkdefs[linkid]=[(nodename,ifname)]
57 # topology maps interface x interface -> link,node1,node2
60 for k in linkdefs.keys():
61 (n1,i1) = linkdefs[k][0]
62 (n2,i2) = linkdefs[k][1]
64 topology[i1] = (n1, i2)
65 topology[i2] = (n2, i1)
71 def allocations_to_rspec(allocations):
72 rspec = xml.dom.minidom.parse(SFA_MAX_DEFAULT_RSPEC)
73 req = rspec.firstChild.appendChild(rspec.createElement("request"))
74 for (iname,ip) in allocations:
75 ifspec = req.appendChild(rspec.createElement("ifspec"))
76 ifspec.setAttribute("name","tns:"+iname)
77 ifspec.setAttribute("ip",ip)
82 def if_endpoints(ifs):
85 nodes.extend(topology[l][0])
88 def lock_state_file():
92 def unlock_state_file():
96 def read_alloc_dict():
98 rows = open(SFA_MAX_CONF_FILE).read().split('\n')
100 columns = r.split(' ')
101 if (len(columns)==2):
103 allocs = columns[1].split(',')
104 ipallocs = map(lambda alloc:alloc.split('/'), allocs)
105 alloc_dict[hrn]=ipallocs
108 def commit_alloc_dict(d):
109 f = open(SFA_MAX_CONF_FILE, 'w')
112 ipcolumns = map(lambda x:"/".join(x), columns)
113 row = hrn+' '+','.join(ipcolumns)+'\n'
117 def collapse_alloc_dict(d):
124 def alloc_links(api, hrn, links_to_add, links_to_drop):
125 slicename=hrn_to_pl_slicename(hrn)
126 for (iface,ip) in links_to_add:
127 node = topology[iface][0][0]
129 api.plshell.AddSliceTag(api.plauth, slicename, "ip_addresses", ip, node)
130 api.plshell.AddSliceTag(api.plauth, slicename, "vsys", "getvlan", node)
132 # Probably a duplicate tag. XXX July 21
136 def alloc_nodes(api,hrn, requested_ifs):
137 requested_nodes = if_endpoints(requested_ifs)
138 create_slice_max_aggregate(api, hrn, requested_nodes)
140 # Taken from slices.py
142 def create_slice_max_aggregate(api, hrn, nodes):
143 # Get the slice record
145 topology = get_interface_map()
147 registries = Registries(api)
148 registry = registries[api.hrn]
149 credential = api.getCredential()
150 urn = hrn_to_urn(hrn, 'slice')
151 records = registry.Resolve(urn, credential)
152 for record in records:
153 if record.get_type() in ['slice']:
154 slice = record.as_dict()
156 raise RecordNotFound(hrn)
158 # Make sure slice exists at plc, if it doesnt add it
159 slicename = hrn_to_pl_slicename(hrn)
160 slices = api.plshell.GetSlices(api.plauth, [slicename], ['node_ids'])
162 parts = slicename.split("_")
163 login_base = parts[0]
164 # if site doesnt exist add it
165 sites = api.plshell.GetSites(api.plauth, [login_base])
167 authority = get_authority(hrn)
168 authority_urn = hrn_to_urn(authority, 'authority')
169 site_records = registry.Resolve(authority_urn, credential)
172 raise RecordNotFound(authority)
173 site_record = site_records[0]
174 site = site_record.as_dict()
178 site_id = api.plshell.AddSite(api.plauth, site)
183 slice_keys = ['name', 'url', 'description']
184 for key in slice_keys:
185 if key in slice and slice[key]:
186 slice_fields[key] = slice[key]
187 api.plshell.AddSlice(api.plauth, slice_fields)
189 slice['node_ids'] = 0
193 # get the list of valid slice users from the registry and make
194 # they are added to the slice
195 researchers = record.get('researcher', [])
196 for researcher in researchers:
198 researcher_urn = hrn_to_urn(researcher, 'user')
199 person_records = registry.Resolve(researcher_urn, credential)
200 for record in person_records:
201 if record.get_type() in ['user']:
202 person_record = record
203 if not person_record:
205 person_dict = person_record.as_dict()
206 persons = api.plshell.GetPersons(api.plauth, [person_dict['email']],
207 ['person_id', 'key_ids'])
209 # Create the person record
211 person_id=api.plshell.AddPerson(api.plauth, person_dict)
213 # The line below enables the user account on the remote aggregate
214 # soon after it is created.
215 # without this the user key is not transfered to the slice
216 # (as GetSlivers returns key of only enabled users),
217 # which prevents the user from login to the slice.
218 # We may do additional checks before enabling the user.
220 api.plshell.UpdatePerson(api.plauth, person_id, {'enabled' : True})
223 key_ids = persons[0]['key_ids']
225 api.plshell.AddPersonToSlice(api.plauth, person_dict['email'],
228 # Get this users local keys
229 keylist = api.plshell.GetKeys(api.plauth, key_ids, ['key'])
230 keys = [key['key'] for key in keylist]
232 # add keys that arent already there
233 for personkey in person_dict['keys']:
234 if personkey not in keys:
235 key = {'key_type': 'ssh', 'key': personkey}
236 api.plshell.AddPersonKey(api.plauth, person_dict['email'], key)
238 # find out where this slice is currently running
239 nodelist = api.plshell.GetNodes(api.plauth, slice['node_ids'],
241 hostnames = [node['hostname'] for node in nodelist]
243 # remove nodes not in rspec
244 deleted_nodes = list(set(hostnames).difference(nodes))
245 # add nodes from rspec
246 added_nodes = list(set(nodes).difference(hostnames))
248 api.plshell.AddSliceToNodes(api.plauth, slicename, added_nodes)
249 api.plshell.DeleteSliceFromNodes(api.plauth, slicename, deleted_nodes)
254 def get_rspec(api, creds, options):
255 # get slice's hrn from options
256 xrn = options.get('geni_slice_urn', None)
257 hrn, type = urn_to_hrn(xrn)
259 # plc.princeton.sapan vlan23,vlan45
261 allocations = read_alloc_dict()
262 if (hrn and allocations.has_key(hrn)):
263 ret_rspec = allocations_to_rspec(allocations[hrn])
265 ret_rspec = open(SFA_MAX_CANNED_RSPEC).read()
270 def create_slice(api, xrn, creds, rspec_xml, users):
272 hrn = urn_to_hrn(xrn)[0]
273 topology = get_interface_map()
275 # Check if everything in rspec is either allocated by hrn
276 # or not allocated at all.
278 r.parseString(rspec_xml)
283 allocations = read_alloc_dict()
284 requested_allocations = rspec_to_allocations (rspec)
285 current_allocations = collapse_alloc_dict(allocations)
287 current_hrn_allocations=allocations[hrn]
289 current_hrn_allocations=[]
291 # Check request against current allocations
292 requested_interfaces = map(lambda(elt):elt[0], requested_allocations)
293 current_interfaces = map(lambda(elt):elt[0], current_allocations)
294 current_hrn_interfaces = map(lambda(elt):elt[0], current_hrn_allocations)
296 for a in requested_interfaces:
297 if (a not in current_hrn_interfaces and a in current_interfaces):
298 raise SfaOutOfResource(a)
299 if (topology[a][1] not in requested_interfaces):
300 raise SfaNoPairRSpec(a,topology[a][1])
303 # Allocations to delete
304 allocations_to_delete = []
305 for a in current_hrn_allocations:
306 if (a not in requested_allocations):
307 allocations_to_delete.extend([a])
309 # Ok, let's do our thing
310 alloc_nodes(api, hrn, requested_interfaces)
311 alloc_links(api, hrn, requested_allocations, allocations_to_delete)
312 allocations[hrn] = requested_allocations
313 commit_alloc_dict(allocations)
319 def rspec_to_allocations(rspec):
322 ifspecs = rspec['rspec']['request'][0]['ifspec']
324 ifs.extend([(l['name'].replace('tns:',''),l['ip'])])
331 t = get_interface_map()
333 rspec_xml = open(sys.argv[1]).read()
334 #get_rspec(None,'foo')
335 create_slice(None, "plc.princeton.sap0", rspec_xml)
337 if __name__ == "__main__":