#----------------------------------------------------------------------
import re
-
+import sys
from sfa.util.faults import SfaAPIError
# for convenience and smoother translation - we should get rid of these functions eventually
def hrn_to_urn(hrn,type): return Xrn(hrn, type=type).urn
def hrn_authfor_hrn(parenthrn, hrn): return Xrn.hrn_is_auth_for_hrn(parenthrn, hrn)
-def urn_to_sliver_id(urn, slice_id, node_id, index=0):
- return ":".join(map(str, [urn, slice_id, node_id, index]))
+def urn_to_sliver_id(urn, slice_id, node_id, index=0, authority=None):
+ return Xrn(urn).get_sliver_id(slice_id, node_id, index, authority)
class Xrn:
return True
return False
+ ########## basic tools on URNs
URN_PREFIX = "urn:publicid:IDN"
+ URN_PREFIX_lower = "urn:publicid:idn"
+
+ @staticmethod
+ def is_urn (text):
+ return text.lower().startswith(Xrn.URN_PREFIX_lower)
- ########## basic tools on URNs
@staticmethod
def urn_full (urn):
- if urn.startswith(Xrn.URN_PREFIX): return urn
+ if Xrn.is_urn(urn): return urn
else: return Xrn.URN_PREFIX+urn
@staticmethod
def urn_meaningful (urn):
- if urn.startswith(Xrn.URN_PREFIX): return urn[len(Xrn.URN_PREFIX):]
+ if Xrn.is_urn(urn): return urn[len(Xrn.URN_PREFIX):]
else: return urn
@staticmethod
def urn_split (urn):
# provide either urn, or (hrn + type)
def __init__ (self, xrn, type=None):
if not xrn: xrn = ""
+
# user has specified xrn : guess if urn or hrn
- if xrn.startswith(Xrn.URN_PREFIX):
+ if Xrn.is_urn(xrn):
self.hrn=None
self.urn=xrn
self.urn_to_hrn()
# self.authority keeps a list
if not hasattr(self,'authority'):
self.authority=Xrn.hrn_auth_list(self.hrn)
-
+
+
def get_leaf(self):
self._normalize()
return self.leaf
def get_authority_urn(self):
self._normalize()
return ':'.join( [Xrn.unescape(x) for x in self.authority] )
-
+
+ def get_sliver_id(self, slice_id, node_id, index=0, authority=None):
+ self._normalize()
+ urn = self.get_urn()
+ if authority:
+ authority_hrn = self.get_authority_hrn()
+ if not authority_hrn.startswith(authority):
+ hrn = ".".join([authority,self.get_authority_hrn(), self.get_leaf()])
+ else:
+ hrn = ".".join([self.get_authority_hrn(), self.get_leaf()])
+ urn = Xrn(hrn, self.get_type()).get_urn()
+ return ":".join(map(str, [urn, slice_id, node_id, index]))
+
def urn_to_hrn(self):
"""
compute tuple (hrn, type) from urn
"""
# if not self.urn or not self.urn.startswith(Xrn.URN_PREFIX):
- if not self.urn.startswith(Xrn.URN_PREFIX):
+ if not Xrn.is_urn(self.urn):
raise SfaAPIError, "Xrn.urn_to_hrn"
parts = Xrn.urn_split(self.urn)
"""
# if not self.hrn or self.hrn.startswith(Xrn.URN_PREFIX):
- if self.hrn.startswith(Xrn.URN_PREFIX):
+ if Xrn.is_urn(self.hrn):
raise SfaAPIError, "Xrn.hrn_to_urn, hrn=%s"%self.hrn
if self.type and self.type.startswith('authority'):
- self.authority = Xrn.hrn_split(self.hrn)
+ self.authority = Xrn.hrn_auth_list(self.hrn)
+ leaf = self.get_leaf()
+ #if not self.authority:
+ # self.authority = [self.hrn]
type_parts = self.type.split("+")
self.type = type_parts[0]
name = 'sa'
if len(type_parts) > 1:
name = type_parts[1]
+ auth_parts = [part for part in [self.get_authority_urn(), leaf] if part]
+ authority_string = ":".join(auth_parts)
else:
self.authority = Xrn.hrn_auth_list(self.hrn)
name = Xrn.hrn_leaf(self.hrn)
-
- authority_string = self.get_authority_urn()
+ authority_string = self.get_authority_urn()
if self.type == None:
urn = "+".join(['',authority_string,Xrn.unescape(name)])