import time
import traceback
import sys
-
+from copy import deepcopy
+from lxml import etree
+from StringIO import StringIO
from types import StringTypes
-from sfa.util.misc import *
+
+from sfa.util.namespace import *
from sfa.util.rspec import *
from sfa.util.specdict import *
from sfa.util.faults import *
-from sfa.util.record import GeniRecord
+from sfa.util.record import SfaRecord
from sfa.util.policy import Policy
from sfa.util.prefixTree import prefixTree
-from sfa.util.rspec import *
from sfa.util.sfaticket import *
from sfa.util.debug import log
-from sfa.server.registry import Registries
-from sfa.server.aggregate import Aggregates
import sfa.plc.peers as peers
-def delete_slice(api, hrn, origin_hrn=None):
+def delete_slice(api, xrn, origin_hrn=None):
credential = api.getCredential()
- aggregates = Aggregates(api)
+ aggregates = api.aggregates
for aggregate in aggregates:
success = False
# request hash is optional so lets try the call without it
try:
- request_hash=None
- aggregates[aggregate].delete_slice(credential, hrn, request_hash, origin_hrn)
+ aggregates[aggregate].delete_slice(credential, xrn, origin_hrn)
success = True
except:
print >> log, "%s" % (traceback.format_exc())
print >> log, "Error calling delete slice at aggregate %s" % aggregate
-
- # try sending the request hash if the previous call failed
- if not success:
- try:
- arg_list = [credential, hrn]
- request_hash = api.key.compute_hash(arg_list)
- aggregates[aggregate].delete_slice(credential, hrn, request_hash, origin_hrn)
- success = True
- except:
- print >> log, "%s" % (traceback.format_exc())
- print >> log, "Error calling list nodes at aggregate %s" % aggregate
return 1
-def create_slice(api, hrn, rspec, gid_origin_caller=None):
- spec = RSpec()
- tempspec = RSpec()
- spec.parseString(rspec)
- slicename = hrn_to_pl_slicename(hrn)
- specDict = spec.toDict()
- if specDict.has_key('RSpec'): specDict = specDict['RSpec']
- if specDict.has_key('start_time'): start_time = specDict['start_time']
- else: start_time = 0
- if specDict.has_key('end_time'): end_time = specDict['end_time']
- else: end_time = 0
-
- rspecs = {}
- aggregates = Aggregates(api)
- credential = api.getCredential()
- credential.set_gid_origin_caller(gid_origin_caller)
- # split the netspecs into individual rspecs
- netspecs = spec.getDictsByTagName('NetSpec')
- for netspec in netspecs:
- net_hrn = netspec['name']
- resources = {'start_time': start_time, 'end_time': end_time, 'networks': netspec}
- resourceDict = {'RSpec': resources}
- tempspec.parseDict(resourceDict)
- rspecs[net_hrn] = tempspec.toxml()
+def create_slice(api, xrn, rspec, origin_hrn=None):
+ hrn, type = urn_to_hrn(xrn)
- #print "rspecs:", rspecs.keys()
- #print "aggregates:", aggregates.keys()
- # send each rspec to the appropriate aggregate/sm
- for net_hrn in rspecs:
+ # 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"
+ schema = None
+ if schema:
try:
- # if we are directly connected to the aggregate then we can just
- # send them the rspec. if not, then we may be connected to an sm
- # thats connected to the aggregate
- if net_hrn in aggregates:
- # send the whloe rspec to the local aggregate
- if net_hrn in [api.hrn]:
- try:
- request_hash = None
- aggregates[net_hrn].create_slice(credential, hrn, \
- rspec, request_hash, origin_hrn)
- except:
- arg_list = [credential,hrn,rspec]
- request_hash = api.key.compute_hash(arg_list)
- aggregates[net_hrn].create_slice(credential, hrn, \
- rspec, request_hash, origin_hrn)
- else:
- try:
- request_hash = None
- aggregates[net_hrn].create_slice(credential, hrn, \
- rspecs[net_hrn], request_hash, origin_hrn)
- except:
- arg_list = [credential,hrn,rspecs[net_hrn]]
- request_hash = api.key.compute_hash(arg_list)
- aggregates[net_hrn].create_slice(credential, hrn, \
- rspecs[net_hrn], request_hash, origin_hrn)
- else:
- # lets forward this rspec to a sm that knows about the network
- arg_list = [credential, net_hrn]
- request_hash = api.key.compute_hash(arg_list)
- for aggregate in aggregates:
- try:
- network_found = aggregates[aggregate].get_aggregates(credential, net_hrn)
- except:
- network_found = aggregates[aggregate].get_aggregates(credential, net_hrn, request_hash)
- if network_found:
- try:
- request_hash = None
- aggregates[aggregate].create_slice(credential, hrn, \
- rspecs[net_hrn], request_hash, origin_hrn)
- except:
- arg_list = [credential, hrn, rspecs[net_hrn]]
- request_hash = api.key.compute_hash(arg_list)
- aggregates[aggregate].create_slice(credential, hrn, \
- rspecs[net_hrn], request_hash, origin_hrn)
+ tree = etree.parse(StringIO(rspec))
+ except etree.XMLSyntaxError:
+ message = str(sys.exc_info()[1])
+ raise InvalidRSpec(message)
- except:
- print >> log, "Error creating slice %(hrn)s at aggregate %(net_hrn)s" % \
- locals()
- traceback.print_exc()
- return 1
+ 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)
-def get_ticket(api, slice_hrn, rspec, origin_hrn=None):
-
+ aggs = api.aggregates
+ cred = api.getCredential()
+ for agg in aggs:
+ if agg not in [api.auth.client_cred.get_gid_caller().get_hrn()]:
+ try:
+ # Just send entire RSpec to each aggregate
+ aggs[agg].create_slice(cred, xrn, rspec, origin_hrn)
+ except:
+ print >> log, "Error creating slice %s at %s" % (hrn, agg)
+ traceback.print_exc()
+
+ return True
+
+def get_ticket(api, xrn, rspec, origin_hrn=None):
+ 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')
for netspec in netspecs:
net_hrn = netspec['name']
resources = {'start_time': 0, 'end_time': 0 ,
- 'network': netspec}
+ 'network': {'NetSpec' : netspec}}
resourceDict = {'RSpec': resources}
temp_rspec.parseDict(resourceDict)
rspecs[net_hrn] = temp_rspec.toxml()
# send the rspec to the appropiate aggregate/sm
- aggregates = Aggregates(api)
+ aggregates = api.aggregates
credential = api.getCredential()
tickets = {}
- for net_hrn in rspecs:
+ 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:
- try:
- ticket = aggregates[net_hrn].get_ticket(credential, slice_hrn, \
- rspecs[net_hrn], None, origin_hrn)
- tickets[net_hrn] = ticket
- except:
- arg_list = [credential,hrn,rspecs[net_hrn]]
- request_hash = api.key.compute_hash(arg_list)
- ticket = aggregates[net_hrn].get_ticket(credential, slice_hrn, \
- rspecs[net_hrn], request_hash, origin_hrn)
- tickets[net_hrn] = ticket
+ 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
- arg_list = [credential, net_hrn]
- request_hash = api.key.compute_hash(arg_list)
for agg in aggregates:
- try:
- network_found = aggregates[agg].get_aggregates(credential, \
- net_hrn)
- except:
- network_found = aggregates[agg].get_aggregates(credential, \
- net_hrn, request_hash)
+ network_found = aggregates[agg].get_aggregates(credential, net_urn)
if network_found:
- try:
- ticket = aggregates[aggregate].get_ticket(credential, \
- slice_hrn, rspecs[net_hrn], None, origin_hrn)
- tickets[aggregate] = ticket
- except:
- arg_list = [credential, hrn, rspecs[net_hrn]]
- request_hash = api.key.compute_hash(arg_list)
- aggregates[aggregate].get_ticket(credential, slice_hrn, \
- rspecs[net_hrn], request_hash, origin_hrn)
- tickets[aggregate] = ticket
+ 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()
# 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 = {}
+ 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_issuer(key=api.key, subject=api.hrn)
new_ticket.set_pubkey(object_gid.get_pubkey())
-
- #new_ticket.set_attributes(data)
+
+ # build the rspec
tmp_rspec.parseString(agg_ticket.get_rspec())
networks.extend([{'NetSpec': tmp_rspec.getDictsByTagName('NetSpec')}])
#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, hrn, origin_hrn=None):
+def start_slice(api, xrn):
+ hrn, type = urn_to_hrn(xrn)
slicename = hrn_to_pl_slicename(hrn)
slices = api.plshell.GetSlices(api.plauth, {'name': slicename}, ['slice_id'])
if not slices:
return 1
-def stop_slice(api, hrn, origin_hrn):
+def stop_slice(api, xrn):
+ hrn, type = urn_to_hrn(xrn)
slicename = hrn_to_pl_slicename(hrn)
slices = api.plshell.GetSlices(api.plauth, {'name': slicename}, ['slice_id'])
if not slices:
api.plshell.UpdateSliceTag(api.plauth, attribute_id, "0")
return 1
-def reset_slice(api, hrn, origin_hrn):
+def reset_slice(api, xrn):
# XX not implemented at this interface
return 1
def get_slices(api):
- # XX just import the legacy module and excute that until
- # we transition the code to this module
- from sfa.plc.slices import Slices
- slices = Slices(api)
- slices.refresh()
- return slices['hrn']
-
-def get_rspec(api, hrn=None, origin_hrn=None):
- from sfa.plc.nodes import Nodes
- nodes = Nodes(api, origin_hrn=origin_hrn)
- if hrn:
- rspec = nodes.get_rspec(hrn)
- else:
- nodes.refresh()
- rspec = nodes['rspec']
+ # look in cache first
+ if api.cache:
+ slices = api.cache.get('slices')
+ if slices:
+ return slices
+ # fetch from aggregates
+ slices = []
+ credential = api.getCredential()
+ for aggregate in api.aggregates:
+ try:
+ tmp_slices = api.aggregates[aggregate].get_slices(credential)
+ slices.extend(tmp_slices)
+ except:
+ print >> log, "%s" % (traceback.format_exc())
+ print >> log, "Error calling slices at aggregate %(aggregate)s" % locals()
+
+ # cache the result
+ if 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')
+ if rspec:
+ return rspec
+
+ hrn, type = urn_to_hrn(xrn)
+ rspec = None
+ aggs = api.aggregates
+ cred = api.getCredential()
+ for agg in aggs:
+ if agg not in [api.auth.client_cred.get_gid_caller().get_hrn()]:
+ try:
+ # get the rspec from the aggregate
+ agg_rspec = aggs[agg].get_resources(cred, xrn, origin_hrn)
+ except:
+ # XX print out to some error log
+ print >> log, "Error getting resources at aggregate %s" % agg
+ traceback.print_exc(log)
+ print >> log, "%s" % (traceback.format_exc())
+ continue
+
+ try:
+ tree = etree.parse(StringIO(agg_rspec))
+ except etree.XMLSyntaxError:
+ message = agg + ": " + 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)
+ if api.cache and not xrn:
+ api.cache.add('nodes', rspec)
+
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.
+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):
- base_context = {'sfa':{'user':{'hrn':user_hrn}}}
+ #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
def main():
git://git.onelab.eu / sfa.git / blobdiff