def prepare_slice(api, slice_xrn, creds, users):
reg_objects = __get_registry_objects(slice_xrn, creds, users)
(hrn, type) = urn_to_hrn(slice_xrn)
slices = Slices(api)
peer = slices.get_peer(hrn)
sfa_peer = slices.get_sfa_peer(hrn)
slice_record=None
if users:
slice_record = users[0].get('slice_record', {})
registry = api.registries[api.hrn]
credential = api.getCredential()
# ensure site record exists
site = slices.verify_site(hrn, slice_record, peer, sfa_peer)
# ensure slice record exists
slice = slices.verify_slice(hrn, slice_record, peer, sfa_peer)
# ensure person records exists
persons = slices.verify_persons(hrn, slice, users, peer, sfa_peer)
def CreateSliver(api, xrn, creds, xml, users, call_id):
"""
Verify HRN and initialize the slice record in PLC if necessary.
"""
if Callids().already_handled(call_id): return ""
hrn, type = urn_to_hrn(xrn)
peer = None
reg_objects = __get_registry_objects(xrn, creds, users)
slices = Slices(api)
peer = slices.get_peer(hrn)
sfa_peer = slices.get_sfa_peer(hrn)
registries = Registries(api)
registry = registries[api.hrn]
credential = api.getCredential()
site_id, remote_site_id = slices.verify_site(registry, credential, hrn,
peer, sfa_peer, reg_objects)
slice = slices.verify_slice(registry, credential, hrn, site_id,
remote_site_id, peer, sfa_peer, reg_objects)
network = ViniNetwork(api)
slice = network.get_slice(api, hrn)
current = __get_hostnames(slice.get_nodes())
network.addRSpec(xml, "/var/www/html/schemas/vini.rng")
#network.addRSpec(xml, "/root/SVN/sfa/trunk/sfa/managers/vini/vini.rng")
request = __get_hostnames(network.nodesWithSlivers())
# remove nodes not in rspec
deleted_nodes = list(set(current).difference(request))
# add nodes from rspec
added_nodes = list(set(request).difference(current))
api.plshell.AddSliceToNodes(api.plauth, slice.name, added_nodes)
api.plshell.DeleteSliceFromNodes(api.plauth, slice.name, deleted_nodes)
network.updateSliceTags()
# xxx - check this holds enough data for the client to understand what's happened
return network.toxml()
