-### $Id: slices.py 15842 2009-11-22 09:56:13Z anil $
-### $URL: https://svn.planet-lab.org/svn/sfa/trunk/sfa/plc/slices.py $
-
-import datetime
-import time
-import traceback
+#
import sys
-from copy import deepcopy
-from lxml import etree
+import time,datetime
from StringIO import StringIO
from types import StringTypes
+from copy import deepcopy
+from copy import copy
+from lxml import etree
-from sfa.util.namespace import *
+from sfa.util.sfalogging import sfa_logger
+from sfa.util.rspecHelper import merge_rspecs
+from sfa.util.xrn import Xrn, urn_to_hrn, hrn_to_urn
+from sfa.util.plxrn import hrn_to_pl_slicename
from sfa.util.rspec import *
from sfa.util.specdict import *
from sfa.util.faults import *
from sfa.util.record import SfaRecord
+from sfa.rspecs.pg_rspec import PGRSpec
+from sfa.rspecs.sfa_rspec import SfaRSpec
+from sfa.rspecs.rspec_converter import RSpecConverter
+from sfa.rspecs.rspec_parser import parse_rspec
+from sfa.rspecs.rspec_version import RSpecVersion
+from sfa.rspecs.sfa_rspec import sfa_rspec_version
+from sfa.rspecs.pg_rspec import pg_rspec_version
from sfa.util.policy import Policy
from sfa.util.prefixTree import prefixTree
from sfa.util.sfaticket import *
+from sfa.trust.credential import Credential
from sfa.util.threadmanager import ThreadManager
-from sfa.util.debug import log
+import sfa.util.xmlrpcprotocol as xmlrpcprotocol
import sfa.plc.peers as peers
+from sfa.util.version import version_core
+from sfa.util.callids import Callids
-def delete_slice(api, xrn, origin_hrn=None):
- credential = api.getCredential()
- threads = ThreadManager()
- for aggregate in api.aggregates:
- server = api.aggregates[aggregate]
- threads.run(server.delete_slice, credential, xrn, origin_hrn)
- threads.get_results()
- return 1
+# we have specialized xmlrpclib.ServerProxy to remember the input url
+# OTOH it's not clear if we're only dealing with XMLRPCServerProxy instances
+def get_serverproxy_url (server):
+ try:
+ return server.url
+ except:
+ sfa_logger().warning("GetVersion, falling back to xmlrpclib.ServerProxy internals")
+ return server._ServerProxy__host + server._ServerProxy__handler
-def create_slice(api, xrn, rspec, origin_hrn=None):
- hrn, type = urn_to_hrn(xrn)
+def GetVersion(api):
+ # peers explicitly in aggregates.xml
+ peers =dict ([ (peername,get_serverproxy_url(v)) for (peername,v) in api.aggregates.iteritems()
+ if peername != api.hrn])
+ xrn=Xrn (api.hrn)
+ supported_rspecs = [dict(pg_rspec_version), dict(sfa_rspec_version)]
+ version_more = {'interface':'slicemgr',
+ 'hrn' : xrn.get_hrn(),
+ 'urn' : xrn.get_urn(),
+ 'peers': peers,
+ 'request_rspec_versions': supported_rspecs,
+ 'ad_rspec_versions': supported_rspecs,
+ 'default_ad_rspec': dict(sfa_rspec_version)
+ }
+ sm_version=version_core(version_more)
+ # local aggregate if present needs to have localhost resolved
+ if api.hrn in api.aggregates:
+ local_am_url=get_serverproxy_url(api.aggregates[api.hrn])
+ sm_version['peers'][api.hrn]=local_am_url.replace('localhost',sm_version['hostname'])
+ return sm_version
+
+def CreateSliver(api, xrn, creds, rspec_str, users, call_id):
+
+ def _CreateSliver(aggregate, xrn, credential, rspec, users, call_id):
+ # Need to call GetVersion at an aggregate to determine the supported
+ # rspec type/format beofre calling CreateSliver at an Aggregate.
+ # The Aggregate's verion info is cached
+ server = api.aggregates[aggregate]
+ # get cached aggregate version
+ aggregate_version_key = 'version_'+ aggregate
+ aggregate_version = api.cache.get(aggregate_version_key)
+ if not aggregate_version:
+ # get current aggregate version anc cache it for 24 hours
+ aggregate_version = server.GetVersion()
+ api.cache.add(aggregate_version_key, aggregate_version, 60 * 60 * 24)
+
+ if 'sfa' not in aggregate_version and 'geni_api' in aggregate_version:
+ # sfa aggregtes support both sfa and pg rspecs, no need to convert
+ # if aggregate supports sfa rspecs. othewise convert to pg rspec
+ rspec = RSpecConverter.to_pg_rspec(rspec)
+
+ return server.CreateSliver(xrn, credential, rspec, users, call_id)
+
+
+ if Callids().already_handled(call_id): return ""
# Validate the RSpec against PlanetLab's schema --disabled for now
# The schema used here needs to aggregate the PL and VINI schemas
# schema = "/var/www/html/schemas/pl.rng"
+ rspec = parse_rspec(rspec_str)
schema = None
if schema:
- try:
- tree = etree.parse(StringIO(rspec))
- except etree.XMLSyntaxError:
- message = str(sys.exc_info()[1])
- raise InvalidRSpec(message)
-
- relaxng_doc = etree.parse(schema)
- relaxng = etree.RelaxNG(relaxng_doc)
-
- if not relaxng(tree):
- error = relaxng.error_log.last_error
- message = "%s (line %s)" % (error.message, error.line)
- raise InvalidRSpec(message)
-
- cred = api.getCredential()
+ rspec.validate(schema)
+
+ # attempt to use delegated credential first
+ credential = api.getDelegatedCredential(creds)
+ if not credential:
+ credential = api.getCredential()
+
+ # get the callers hrn
+ hrn, type = urn_to_hrn(xrn)
+ valid_cred = api.auth.checkCredentials(creds, 'createsliver', hrn)[0]
+ caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
threads = ThreadManager()
for aggregate in api.aggregates:
- if aggregate not in [api.auth.client_cred.get_gid_caller().get_hrn()]:
- server = api.aggregates[aggregate]
- # Just send entire RSpec to each aggregate
- threads.run(server.create_slice, cred, xrn, rspec, origin_hrn)
- threads.get_results()
- return 1
+ # prevent infinite loop. Dont send request back to caller
+ # unless the caller is the aggregate's SM
+ if caller_hrn == aggregate and aggregate != api.hrn:
+ continue
+
+ # Just send entire RSpec to each aggregate
+ threads.run(_CreateSliver, aggregate, xrn, credential, rspec.toxml(), users, call_id)
+
+ results = threads.get_results()
+ rspec = SfaRSpec()
+ for result in results:
+ rspec.merge(result)
+ return rspec.toxml()
-def get_ticket(api, xrn, rspec, origin_hrn=None):
+def RenewSliver(api, xrn, creds, expiration_time, call_id):
+ if Callids().already_handled(call_id): return True
+
+ (hrn, type) = urn_to_hrn(xrn)
+ # get the callers hrn
+ valid_cred = api.auth.checkCredentials(creds, 'renewsliver', hrn)[0]
+ caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
+
+ # attempt to use delegated credential first
+ credential = api.getDelegatedCredential(creds)
+ if not credential:
+ credential = api.getCredential()
+ threads = ThreadManager()
+ for aggregate in api.aggregates:
+ # prevent infinite loop. Dont send request back to caller
+ # unless the caller is the aggregate's SM
+ if caller_hrn == aggregate and aggregate != api.hrn:
+ continue
+
+ server = api.aggregates[aggregate]
+ threads.run(server.RenewSliver, xrn, [credential], expiration_time, call_id)
+ # 'and' the results
+ return reduce (lambda x,y: x and y, threads.get_results() , True)
+
+def get_ticket(api, xrn, creds, rspec, users):
slice_hrn, type = urn_to_hrn(xrn)
# get the netspecs contained within the clients rspec
- client_rspec = RSpec(xml=rspec)
- netspecs = client_rspec.getDictsByTagName('NetSpec')
+ aggregate_rspecs = {}
+ tree= etree.parse(StringIO(rspec))
+ elements = tree.findall('./network')
+ for element in elements:
+ aggregate_hrn = element.values()[0]
+ aggregate_rspecs[aggregate_hrn] = rspec
+
+ # get the callers hrn
+ valid_cred = api.auth.checkCredentials(creds, 'getticket', slice_hrn)[0]
+ caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
+
+ # attempt to use delegated credential first
+ credential = api.getDelegatedCredential(creds)
+ if not credential:
+ credential = api.getCredential()
+ threads = ThreadManager()
+ for (aggregate, aggregate_rspec) in aggregate_rspecs.iteritems():
+ # prevent infinite loop. Dont send request back to caller
+ # unless the caller is the aggregate's SM
+ if caller_hrn == aggregate and aggregate != api.hrn:
+ continue
+ server = None
+ if aggregate in api.aggregates:
+ server = api.aggregates[aggregate]
+ else:
+ net_urn = hrn_to_urn(aggregate, 'authority')
+ # we may have a peer that knows about this aggregate
+ for agg in api.aggregates:
+ target_aggs = api.aggregates[agg].get_aggregates(credential, net_urn)
+ if not target_aggs or not 'hrn' in target_aggs[0]:
+ continue
+ # send the request to this address
+ url = target_aggs[0]['url']
+ server = xmlrpcprotocol.get_server(url, api.key_file, api.cert_file)
+ # aggregate found, no need to keep looping
+ break
+ if server is None:
+ continue
+ threads.run(server.GetTicket, xrn, credential, aggregate_rspec, users)
+
+ results = threads.get_results()
- # create an rspec for each individual rspec
- rspecs = {}
- temp_rspec = RSpec()
- for netspec in netspecs:
- net_hrn = netspec['name']
- resources = {'start_time': 0, 'end_time': 0 ,
- 'network': {'NetSpec' : netspec}}
- resourceDict = {'RSpec': resources}
- temp_rspec.parseDict(resourceDict)
- rspecs[net_hrn] = temp_rspec.toxml()
+ # gather information from each ticket
+ rspecs = []
+ initscripts = []
+ slivers = []
+ object_gid = None
+ for result in results:
+ agg_ticket = SfaTicket(string=result)
+ attrs = agg_ticket.get_attributes()
+ if not object_gid:
+ object_gid = agg_ticket.get_gid_object()
+ rspecs.append(agg_ticket.get_rspec())
+ initscripts.extend(attrs.get('initscripts', []))
+ slivers.extend(attrs.get('slivers', []))
- # send the rspec to the appropiate aggregate/sm
- aggregates = api.aggregates
- credential = api.getCredential()
- tickets = {}
- for net_hrn in rspecs:
- net_urn = urn_to_hrn(net_hrn)
- try:
- # if we are directly connected to the aggregate then we can just
- # send them the request. if not, then we may be connected to an sm
- # thats connected to the aggregate
- if net_hrn in aggregates:
- ticket = aggregates[net_hrn].get_ticket(credential, xrn, \
- rspecs[net_hrn], origin_hrn)
- tickets[net_hrn] = ticket
- else:
- # lets forward this rspec to a sm that knows about the network
- for agg in aggregates:
- network_found = aggregates[agg].get_aggregates(credential, net_urn)
- if network_found:
- ticket = aggregates[aggregate].get_ticket(credential, \
- slice_hrn, rspecs[net_hrn], origin_hrn)
- tickets[aggregate] = ticket
- except:
- print >> log, "Error getting ticket for %(slice_hrn)s at aggregate %(net_hrn)s" % \
- locals()
-
+ # merge info
+ attributes = {'initscripts': initscripts,
+ 'slivers': slivers}
+ merged_rspec = merge_rspecs(rspecs)
+
# create a new ticket
- new_ticket = SfaTicket(subject = slice_hrn)
- new_ticket.set_gid_caller(api.auth.client_gid)
- new_ticket.set_issuer(key=api.key, subject=api.hrn)
-
- tmp_rspec = RSpec()
- networks = []
- valid_data = {
- 'timestamp': int(time.time()),
- 'initscripts': [],
- 'slivers': []
- }
- # merge data from aggregate ticket into new ticket
- for agg_ticket in tickets.values():
- # get data from this ticket
- agg_ticket = SfaTicket(string=agg_ticket)
- attributes = agg_ticket.get_attributes()
- if attributes.get('initscripts', []) != None:
- valid_data['initscripts'].extend(attributes.get('initscripts', []))
- if attributes.get('slivers', []) != None:
- valid_data['slivers'].extend(attributes.get('slivers', []))
-
- # set the object gid
- object_gid = agg_ticket.get_gid_object()
- new_ticket.set_gid_object(object_gid)
- new_ticket.set_pubkey(object_gid.get_pubkey())
-
- # build the rspec
- tmp_rspec.parseString(agg_ticket.get_rspec())
- networks.extend([{'NetSpec': tmp_rspec.getDictsByTagName('NetSpec')}])
-
+ ticket = SfaTicket(subject = slice_hrn)
+ ticket.set_gid_caller(api.auth.client_gid)
+ ticket.set_issuer(key=api.key, subject=api.hrn)
+ ticket.set_gid_object(object_gid)
+ ticket.set_pubkey(object_gid.get_pubkey())
#new_ticket.set_parent(api.auth.hierarchy.get_auth_ticket(auth_hrn))
- new_ticket.set_attributes(valid_data)
- resources = {'networks': networks, 'start_time': 0, 'duration': 0}
- resourceDict = {'RSpec': resources}
- tmp_rspec.parseDict(resourceDict)
- new_ticket.set_rspec(tmp_rspec.toxml())
- new_ticket.encode()
- new_ticket.sign()
- return new_ticket.save_to_string(save_parents=True)
-
-def start_slice(api, xrn):
- credential = api.getCredential()
+ ticket.set_attributes(attributes)
+ ticket.set_rspec(merged_rspec)
+ ticket.encode()
+ ticket.sign()
+ return ticket.save_to_string(save_parents=True)
+
+
+def DeleteSliver(api, xrn, creds, call_id):
+ if Callids().already_handled(call_id): return ""
+ (hrn, type) = urn_to_hrn(xrn)
+ # get the callers hrn
+ valid_cred = api.auth.checkCredentials(creds, 'deletesliver', hrn)[0]
+ caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
+
+ # attempt to use delegated credential first
+ credential = api.getDelegatedCredential(creds)
+ if not credential:
+ credential = api.getCredential()
threads = ThreadManager()
for aggregate in api.aggregates:
+ # prevent infinite loop. Dont send request back to caller
+ # unless the caller is the aggregate's SM
+ if caller_hrn == aggregate and aggregate != api.hrn:
+ continue
server = api.aggregates[aggregate]
- threads.run(server.stop_slice, credential, xrn)
+ threads.run(server.DeleteSliver, xrn, credential, call_id)
+ threads.get_results()
+ return 1
+
+def start_slice(api, xrn, creds):
+ hrn, type = urn_to_hrn(xrn)
+
+ # get the callers hrn
+ valid_cred = api.auth.checkCredentials(creds, 'startslice', hrn)[0]
+ caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
+
+ # attempt to use delegated credential first
+ credential = api.getDelegatedCredential(creds)
+ if not credential:
+ credential = api.getCredential()
+ threads = ThreadManager()
+ for aggregate in api.aggregates:
+ # prevent infinite loop. Dont send request back to caller
+ # unless the caller is the aggregate's SM
+ if caller_hrn == aggregate and aggregate != api.hrn:
+ continue
+ server = api.aggregates[aggregate]
+ threads.run(server.Start, xrn, credential)
+ threads.get_results()
return 1
-def stop_slice(api, xrn):
- credential = api.getCredential()
+def stop_slice(api, xrn, creds):
+ hrn, type = urn_to_hrn(xrn)
+
+ # get the callers hrn
+ valid_cred = api.auth.checkCredentials(creds, 'stopslice', hrn)[0]
+ caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
+
+ # attempt to use delegated credential first
+ credential = api.getDelegatedCredential(creds)
+ if not credential:
+ credential = api.getCredential()
threads = ThreadManager()
for aggregate in api.aggregates:
+ # prevent infinite loop. Dont send request back to caller
+ # unless the caller is the aggregate's SM
+ if caller_hrn == aggregate and aggregate != api.hrn:
+ continue
server = api.aggregates[aggregate]
- threads.run(server.stop_slice, credential, xrn)
+ threads.run(server.Stop, xrn, credential)
+ threads.get_results()
return 1
def reset_slice(api, xrn):
- # XX not implemented at this interface
+ """
+ Not implemented
+ """
return 1
-def get_slices(api):
+def shutdown(api, xrn, creds):
+ """
+ Not implemented
+ """
+ return 1
+
+def status(api, xrn, creds):
+ """
+ Not implemented
+ """
+ return 1
+
+# Thierry : caching at the slicemgr level makes sense to some extent
+caching=True
+#caching=False
+def ListSlices(api, creds, call_id):
+
+ if Callids().already_handled(call_id): return []
+
# look in cache first
- if api.cache:
+ if caching and api.cache:
slices = api.cache.get('slices')
if slices:
return slices
- # fetch from aggregates
- slices = []
- credential = api.getCredential()
+ # get the callers hrn
+ valid_cred = api.auth.checkCredentials(creds, 'listslices', None)[0]
+ caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
+
+ # attempt to use delegated credential first
+ credential = api.getDelegatedCredential(creds)
+ if not credential:
+ credential = api.getCredential()
threads = ThreadManager()
+ # fetch from aggregates
for aggregate in api.aggregates:
+ # prevent infinite loop. Dont send request back to caller
+ # unless the caller is the aggregate's SM
+ if caller_hrn == aggregate and aggregate != api.hrn:
+ continue
server = api.aggregates[aggregate]
- threads.run(server.get_slices, credential)
+ threads.run(server.ListSlices, credential, call_id)
# combime results
results = threads.get_results()
slices.extend(result)
# cache the result
- if api.cache:
+ if caching and api.cache:
api.cache.add('slices', slices)
return slices
-
-def get_rspec(api, xrn=None, origin_hrn=None):
- # look in cache first
- if api.cache and not xrn:
- rspec = api.cache.get('nodes')
+
+
+def ListResources(api, creds, options, call_id):
+
+ if Callids().already_handled(call_id): return ""
+
+ # get slice's hrn from options
+ xrn = options.get('geni_slice_urn', '')
+ (hrn, type) = urn_to_hrn(xrn)
+
+ # get the rspec's return format from options
+ rspec_version = RSpecVersion(options.get('rspec_version'))
+ version_string = "rspec_%s" % (rspec_version.get_version_name())
+
+ # look in cache first
+ if caching and api.cache and not xrn:
+ rspec = api.cache.get(version_string)
if rspec:
return rspec
- hrn, type = urn_to_hrn(xrn)
- rspec = None
- cred = api.getCredential()
+ # get the callers hrn
+ valid_cred = api.auth.checkCredentials(creds, 'listnodes', hrn)[0]
+ caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
+
+ # attempt to use delegated credential first
+ credential = api.getDelegatedCredential(creds)
+ if not credential:
+ credential = api.getCredential()
threads = ThreadManager()
for aggregate in api.aggregates:
- if aggregate not in [api.auth.client_cred.get_gid_caller().get_hrn()]:
- # get the rspec from the aggregate
- server = api.aggregates[aggregate]
- threads.run(server.get_resources, cred, xrn, origin_hrn)
-
+ # prevent infinite loop. Dont send request back to caller
+ # unless the caller is the aggregate's SM
+ if caller_hrn == aggregate and aggregate != api.hrn:
+ continue
+ # get the rspec from the aggregate
+ server = api.aggregates[aggregate]
+ my_opts = copy(options)
+ my_opts['geni_compressed'] = False
+ threads.run(server.ListResources, credential, my_opts, call_id)
+
results = threads.get_results()
- # combine the rspecs into a single rspec
- for agg_rspec in results:
+ #results.append(open('/root/protogeni.rspec', 'r').read())
+ rspec_version = RSpecVersion(my_opts.get('rspec_version'))
+ if rspec_version['type'].lower() == 'protogeni':
+ rspec = PGRSpec()
+ else:
+ rspec = SfaRSpec()
+
+ for result in results:
+ print "RESULT"
try:
- tree = etree.parse(StringIO(agg_rspec))
- except etree.XMLSyntaxError:
- message = str(agg_rspec) + ": " + str(sys.exc_info()[1])
- raise InvalidRSpec(message)
-
- root = tree.getroot()
- if root.get("type") in ["SFA"]:
- if rspec == None:
- rspec = root
- else:
- for network in root.iterfind("./network"):
- rspec.append(deepcopy(network))
- for request in root.iterfind("./request"):
- rspec.append(deepcopy(request))
-
- rspec = etree.tostring(rspec, xml_declaration=True, pretty_print=True)
+ rspec.merge(result)
+ except:
+ raise
+ api.logger.info("SM.ListResources: Failed to merge aggregate rspec")
+
# cache the result
- if api.cache and not xrn:
- api.cache.add('nodes', rspec)
+ if caching and api.cache and not xrn:
+ api.cache.add(version_string, rspec.toxml())
- return rspec
-
-"""
-Returns the request context required by sfatables. At some point, this
-mechanism should be changed to refer to "contexts", which is the
-information that sfatables is requesting. But for now, we just return
-the basic information needed in a dict.
-"""
-def fetch_context(slice_hrn, user_hrn, contexts):
- #slice_hrn = urn_to_hrn(slice_xrn)[0]
- #user_hrn = urn_to_hrn(user_xrn)[0]
- base_context = {'sfa':{'user':{'hrn':user_hrn}, 'slice':{'hrn':slice_hrn}}}
- return base_context
+ return rspec.toxml()
+
+# first draft at a merging SliverStatus
+def SliverStatus(api, slice_xrn, creds, call_id):
+ if Callids().already_handled(call_id): return {}
+ # attempt to use delegated credential first
+ credential = api.getDelegatedCredential(creds)
+ if not credential:
+ credential = api.getCredential()
+ threads = ThreadManager()
+ for aggregate in api.aggregates:
+ server = api.aggregates[aggregate]
+ threads.run (server.SliverStatus, slice_xrn, credential, call_id)
+ results = threads.get_results()
+
+ # get rid of any void result - e.g. when call_id was hit where by convention we return {}
+ results = [ result for result in results if result and result['geni_resources']]
+
+ # do not try to combine if there's no result
+ if not results : return {}
+
+ # otherwise let's merge stuff
+ overall = {}
+
+ # mmh, it is expected that all results carry the same urn
+ overall['geni_urn'] = results[0]['geni_urn']
+
+ # consolidate geni_status - simple model using max on a total order
+ states = [ 'ready', 'configuring', 'failed', 'unknown' ]
+ # hash name to index
+ shash = dict ( zip ( states, range(len(states)) ) )
+ def combine_status (x,y):
+ return shash [ max (shash(x),shash(y)) ]
+ overall['geni_status'] = reduce (combine_status, [ result['geni_status'] for result in results], 'ready' )
+
+ # {'ready':0,'configuring':1,'failed':2,'unknown':3}
+ # append all geni_resources
+ overall['geni_resources'] = \
+ reduce (lambda x,y: x+y, [ result['geni_resources'] for result in results] , [])
+
+ return overall
def main():
r = RSpec()
r.parseFile(sys.argv[1])
rspec = r.toDict()
- create_slice(None,'plc.princeton.tmacktestslice',rspec)
+ CreateSliver(None,'plc.princeton.tmacktestslice',rspec,'create-slice-tmacktestslice')
if __name__ == "__main__":
main()
git://git.onelab.eu / sfa.git / blobdiff