#----------------------------------------------------------------------
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:
# 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):
self.hrn=None
# if not type:
# debug_logger.debug("type-less Xrn's are not safe")
+ def __repr__ (self):
+ result="<XRN u=%s h=%s"%(self.urn,self.hrn)
+ if hasattr(self,'leaf'): result += " leaf=%s"%self.leaf
+ if hasattr(self,'authority'): result += " auth=%s"%self.authority
+ result += ">"
+ return result
+
def get_urn(self): return self.urn
def get_hrn(self): return self.hrn
def get_type(self): return self.type
# 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_hrn(self):
+ def get_authority_hrn(self):
self._normalize()
return '.'.join( self.authority )
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