3 from sfa.util.rspec import Rspec
6 from sfa.util.misc import *
7 from sfa.util.rspec import *
8 from sfa.util.specdict import *
9 from sfa.util.faults import *
10 from sfa.util.storage import *
11 from sfa.util.policy import Policy
12 from sfa.util.debug import log
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 GeniOutOfResource(GeniFault):
26 def __init__(self, interface):
27 faultString = "Interface " + interface + " not available"
28 GeniFault.__init__(self, 100, faultString, '')
30 class GeniNoPairRspec(GeniFault):
31 def __init__(self, interface, interface2):
32 faultString = "Interface " + interface + " should be paired with " + interface2
33 GeniFault.__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):
126 slicename=hrn_to_pl_slicename(hrn)
127 for (iface,ip) in links_to_add:
128 node = topology[iface][0][0]
129 api.plshell.AddSliceTag(api.plauth, slicename, "ip_addresses", ip, node)
132 def alloc_nodes(api,hrn, requested_ifs):
133 requested_nodes = if_endpoints(requested_ifs)
134 create_slice_max_aggregate(api, hrn, requested_nodes)
136 # Taken from slices.py
138 def create_slice_max_aggregate(api, hrn, nodes):
139 # Get the slice record from geni
141 topology = get_interface_map()
143 registries = Registries(api)
144 registry = registries[api.hrn]
145 credential = api.getCredential()
146 records = registry.resolve(credential, hrn)
147 for record in records:
148 if record.get_type() in ['slice']:
149 slice = record.as_dict()
151 raise RecordNotFound(hrn)
153 # Make sure slice exists at plc, if it doesnt add it
154 slicename = hrn_to_pl_slicename(hrn)
155 slices = api.plshell.GetSlices(api.plauth, [slicename], ['node_ids'])
157 parts = slicename.split("_")
158 login_base = parts[0]
159 # if site doesnt exist add it
160 sites = api.plshell.GetSites(api.plauth, [login_base])
162 authority = get_authority(hrn)
163 site_records = registry.resolve(credential, authority)
166 raise RecordNotFound(authority)
167 site_record = site_records[0]
168 site = site_record.as_dict()
172 site_id = api.plshell.AddSite(api.plauth, site)
177 slice_keys = ['name', 'url', 'description']
178 for key in slice_keys:
179 if key in slice and slice[key]:
180 slice_fields[key] = slice[key]
181 api.plshell.AddSlice(api.plauth, slice_fields)
183 slice['node_ids'] = 0
187 # get the list of valid slice users from the registry and make
188 # they are added to the slice
189 researchers = record.get('researcher', [])
190 for researcher in researchers:
192 person_records = registry.resolve(credential, researcher)
193 for record in person_records:
194 if record.get_type() in ['user']:
195 person_record = record
196 if not person_record:
198 person_dict = person_record.as_dict()
199 persons = api.plshell.GetPersons(api.plauth, [person_dict['email']],
200 ['person_id', 'key_ids'])
202 # Create the person record
204 person_id=api.plshell.AddPerson(api.plauth, person_dict)
206 # The line below enables the user account on the remote aggregate
207 # soon after it is created.
208 # without this the user key is not transfered to the slice
209 # (as GetSlivers returns key of only enabled users),
210 # which prevents the user from login to the slice.
211 # We may do additional checks before enabling the user.
213 api.plshell.UpdatePerson(api.plauth, person_id, {'enabled' : True})
216 key_ids = persons[0]['key_ids']
218 api.plshell.AddPersonToSlice(api.plauth, person_dict['email'],
221 # Get this users local keys
222 keylist = api.plshell.GetKeys(api.plauth, key_ids, ['key'])
223 keys = [key['key'] for key in keylist]
225 # add keys that arent already there
226 for personkey in person_dict['keys']:
227 if personkey not in keys:
228 key = {'key_type': 'ssh', 'key': personkey}
229 api.plshell.AddPersonKey(api.plauth, person_dict['email'], key)
231 # find out where this slice is currently running
232 nodelist = api.plshell.GetNodes(api.plauth, slice['node_ids'],
234 hostnames = [node['hostname'] for node in nodelist]
236 # remove nodes not in rspec
237 deleted_nodes = list(set(hostnames).difference(nodes))
238 # add nodes from rspec
239 added_nodes = list(set(nodes).difference(hostnames))
241 api.plshell.AddSliceToNodes(api.plauth, slicename, added_nodes)
242 api.plshell.DeleteSliceFromNodes(api.plauth, slicename, deleted_nodes)
247 def get_rspec(api, hrn):
249 # plc.princeton.sapan vlan23,vlan45
251 allocations = read_alloc_dict()
252 if (hrn and allocations.has_key(hrn)):
253 ret_rspec = allocations_to_rspec(allocations[hrn])
255 ret_rspec = open(SFA_MAX_CANNED_RSPEC).read()
260 def create_slice(api, hrn, rspec_xml):
262 topology = get_interface_map()
264 # Check if everything in rspec is either allocated by hrn
265 # or not allocated at all.
267 r.parseString(rspec_xml)
272 allocations = read_alloc_dict()
273 requested_allocations = rspec_to_allocations (rspec)
274 current_allocations = collapse_alloc_dict(allocations)
276 current_hrn_allocations=allocations[hrn]
278 current_hrn_allocations=[]
280 # Check request against current allocations
281 requested_interfaces = map(lambda(elt):elt[0], requested_allocations)
282 current_interfaces = map(lambda(elt):elt[0], current_allocations)
283 current_hrn_interfaces = map(lambda(elt):elt[0], current_hrn_allocations)
285 for a in requested_interfaces:
286 if (a not in current_hrn_interfaces and a in current_interfaces):
287 raise GeniOutOfResource(a)
288 if (topology[a][1] not in requested_interfaces):
289 raise GeniNoPairRspec(a,topology[a][1])
292 # Allocations to delete
293 allocations_to_delete = []
294 for a in current_hrn_allocations:
295 if (a not in requested_allocations):
296 allocations_to_delete.extend([a])
298 # Ok, let's do our thing
299 alloc_nodes(api, hrn, requested_interfaces)
300 alloc_links(api, hrn, requested_allocations, allocations_to_delete)
301 allocations[hrn] = requested_allocations
302 commit_alloc_dict(allocations)
308 def rspec_to_allocations(rspec):
311 ifspecs = rspec['rspec']['request'][0]['ifspec']
313 ifs.extend([(l['name'].replace('tns:',''),l['ip'])])
320 t = get_interface_map()
322 rspec_xml = open(sys.argv[1]).read()
323 #get_rspec(None,'foo')
324 create_slice(None, "plc.princeton.sap0", rspec_xml)
326 if __name__ == "__main__":