1 ### $Id: slices.py 15842 2009-11-22 09:56:13Z anil $
2 ### $URL: https://svn.planet-lab.org/svn/sfa/trunk/sfa/plc/slices.py $
8 from copy import deepcopy
10 from StringIO import StringIO
11 from types import StringTypes
12 from sfa.util.rspecHelper import merge_rspecs
13 from sfa.util.namespace import *
14 from sfa.util.rspec import *
15 from sfa.util.specdict import *
16 from sfa.util.faults import *
17 from sfa.util.record import SfaRecord
18 from sfa.util.policy import Policy
19 from sfa.util.prefixTree import prefixTree
20 from sfa.util.sfaticket import *
21 from sfa.trust.credential import Credential
22 from sfa.util.threadmanager import ThreadManager
23 import sfa.util.xmlrpcprotocol as xmlrpcprotocol
24 from sfa.util.debug import log
25 import sfa.plc.peers as peers
29 version['geni_api'] = 1
32 def slice_status(api, slice_xrn, creds ):
34 result['geni_urn'] = slice_xrn
35 result['geni_status'] = 'unknown'
36 result['geni_resources'] = {}
39 def create_slice(api, xrn, creds, rspec, users):
40 hrn, type = urn_to_hrn(xrn)
42 # Validate the RSpec against PlanetLab's schema --disabled for now
43 # The schema used here needs to aggregate the PL and VINI schemas
44 # schema = "/var/www/html/schemas/pl.rng"
48 tree = etree.parse(StringIO(rspec))
49 except etree.XMLSyntaxError:
50 message = str(sys.exc_info()[1])
51 raise InvalidRSpec(message)
53 relaxng_doc = etree.parse(schema)
54 relaxng = etree.RelaxNG(relaxng_doc)
57 error = relaxng.error_log.last_error
58 message = "%s (line %s)" % (error.message, error.line)
59 raise InvalidRSpec(message)
62 # XX TODO: Should try to use delegated credential first
64 cred = api.getCredential()
65 threads = ThreadManager()
66 for aggregate in api.aggregates:
67 if aggregate not in [api.auth.client_cred.get_gid_caller().get_hrn()]:
68 server = api.aggregates[aggregate]
69 # Just send entire RSpec to each aggregate
70 threads.run(server.CreateSliver, xrn, cred, rspec, users)
72 results = threads.get_results()
73 merged_rspec = merge_rspecs(results)
76 def renew_slice(api, xrn, creds, expiration_time):
78 # XX TODO: Should try to use delegated credential first
80 credential = api.getCredential()
81 threads = ThreadManager()
82 for aggregate in api.aggregates:
83 server = api.aggregates[aggregate]
84 threads.run(server.RenewSliver, xrn, credential, expiration_time)
88 def get_ticket(api, xrn, rspec, origin_hrn=None):
89 slice_hrn, type = urn_to_hrn(xrn)
90 # get the netspecs contained within the clients rspec
92 tree= etree.parse(StringIO(rspec))
93 elements = tree.findall('./network')
94 for element in elements:
95 aggregate_hrn = element.values()[0]
96 aggregate_rspecs[aggregate_hrn] = rspec
98 # get a ticket from each aggregate
99 credential = api.getCredential()
100 threads = ThreadManager()
101 for aggregate, aggregate_rspec in aggregate_rspecs.items():
103 if aggregate in api.aggregates:
104 server = api.aggregates[aggregate]
106 net_urn = hrn_to_urn(aggregate, 'authority')
107 # we may have a peer that knows about this aggregate
108 for agg in api.aggregates:
109 agg_info = api.aggregates[agg].get_aggregates(credential, net_urn)
111 # send the request to this address
112 url = 'http://%s:%s' % (agg_info['addr'], agg_info['port'])
113 server = xmlrpcprotocol.get_server(url, api.key_file, api.cert_file)
117 threads.run(server.get_ticket, credential, xrn, aggregate_rspec, origin_hrn)
118 results = threads.get_results()
120 # gather information from each ticket
125 for result in results:
126 agg_ticket = SfaTicket(string=result)
127 attrs = agg_ticket.get_attributes()
129 object_gid = agg_ticket.get_gid_object()
130 rspecs.append(agg_ticket.get_rspec())
131 initscripts.extend(attrs.get('initscripts', []))
132 slivers.extend(attrs.get('slivers', []))
135 attributes = {'initscripts': initscripts,
137 merged_rspec = merge_rspecs(rspecs)
139 # create a new ticket
140 ticket = SfaTicket(subject = slice_hrn)
141 ticket.set_gid_caller(api.auth.client_gid)
142 ticket.set_issuer(key=api.key, subject=api.hrn)
143 ticket.set_gid_object(object_gid)
144 ticket.set_pubkey(object_gid.get_pubkey())
145 #new_ticket.set_parent(api.auth.hierarchy.get_auth_ticket(auth_hrn))
146 ticket.set_attributes(attributes)
147 ticket.set_rspec(merged_rspec)
150 return ticket.save_to_string(save_parents=True)
153 def delete_slice(api, xrn, origin_hrn=None):
155 # XX TODO: Should try to use delegated credential first
157 credential = api.getCredential()
158 threads = ThreadManager()
159 for aggregate in api.aggregates:
160 server = api.aggregates[aggregate]
161 threads.run(server.DeleteSliver, xrn, credential)
162 threads.get_results()
165 def start_slice(api, xrn, creds):
167 # XX TODO: Should try to use delegated credential first
169 credential = api.getCredential()
170 threads = ThreadManager()
171 for aggregate in api.aggregates:
172 server = api.aggregates[aggregate]
173 threads.run(server.Start, xrn, credential)
174 threads.get_results()
177 def stop_slice(api, xrn, creds):
179 # XX TODO: Should try to use delegated credential first
181 credential = api.getCredential()
182 threads = ThreadManager()
183 for aggregate in api.aggregates:
184 server = api.aggregates[aggregate]
185 threads.run(server.Stop, xrn, credential)
186 threads.get_results()
189 def reset_slice(api, xrn):
195 def shutdown(api, xrn, creds):
201 def status(api, xrn, creds):
207 def get_slices(api, creds):
208 # look in cache first
210 slices = api.cache.get('slices')
214 # fetch from aggregates
216 credential = api.getCredential()
217 threads = ThreadManager()
218 for aggregate in api.aggregates:
219 server = api.aggregates[aggregate]
220 threads.run(server.ListSlices, credential)
223 results = threads.get_results()
225 for result in results:
226 slices.extend(result)
230 api.cache.add('slices', slices)
234 def get_rspec(api, creds, options):
235 # get slice's hrn from options
236 xrn = options.get('geni_slice_urn', None)
237 hrn, type = urn_to_hrn(xrn)
239 # get hrn of the original caller
240 origin_hrn = options.get('origin_hrn', None)
242 origin_hrn = Credential(string=creds[0]).get_gid_caller().get_hrn()
244 # look in cache first
245 if api.cache and not xrn:
246 rspec = api.cache.get('nodes')
250 hrn, type = urn_to_hrn(xrn)
253 # XX TODO: Should try to use delegated credential first
255 cred = api.getCredential()
256 threads = ThreadManager()
258 for aggregate in api.aggregates:
259 if aggregate not in [api.auth.client_cred.get_gid_caller().get_hrn()]:
260 # get the rspec from the aggregate
261 server = api.aggregates[aggregate]
262 threads.run(server.ListResources, cred, options)
263 #threads.run(server.get_resources, cred, xrn, origin_hrn)
266 results = threads.get_results()
267 # combine the rspecs into a single rspec
268 for agg_rspec in results:
270 tree = etree.parse(StringIO(agg_rspec))
271 except etree.XMLSyntaxError:
272 message = str(agg_rspec) + ": " + str(sys.exc_info()[1])
273 raise InvalidRSpec(message)
275 root = tree.getroot()
276 if root.get("type") in ["SFA"]:
280 for network in root.iterfind("./network"):
281 rspec.append(deepcopy(network))
282 for request in root.iterfind("./request"):
283 rspec.append(deepcopy(request))
285 rspec = etree.tostring(rspec, xml_declaration=True, pretty_print=True)
287 if api.cache and not xrn:
288 api.cache.add('nodes', rspec)
294 r.parseFile(sys.argv[1])
296 create_slice(None,'plc.princeton.tmacktestslice',rspec)
298 if __name__ == "__main__":