+ # this convenience methods extracts speaking_for_xrn from the passed options using 'geni_speaking_for'
+ def checkCredentialsSpeaksFor (self, *args, **kwds):
+ if 'options' not in kwds:
+ logger.error ("checkCredentialsSpeaksFor was not passed options=options")
+ return
+ # remove the options arg
+ options=kwds['options']; del kwds['options']
+ # compute the speaking_for_xrn arg and pass it to checkCredentials
+ if options is None: speaking_for_xrn=None
+ else: speaking_for_xrn=options.get('geni_speaking_for',None)
+ kwds['speaking_for_xrn']=speaking_for_xrn
+ return self.checkCredentials (*args, **kwds)
+
+ # do not use mutable as default argument
+ # http://docs.python-guide.org/en/latest/writing/gotchas/#mutable-default-arguments
+ def checkCredentials(self, creds, operation, xrns=None,
+ check_sliver_callback=None,
+ speaking_for_xrn=None):
+ if xrns is None: xrns=[]
+ def log_invalid_cred(cred):
+ cred_obj=Credential(string=cred)
+ logger.debug("failed to validate credential - dump=%s"%cred_obj.dump_string(dump_parents=True))
+ error = sys.exc_info()[:2]
+ return error
+
+ # if xrns are specified they cannot be None or empty string
+ if xrns:
+ for xrn in xrns:
+ if not xrn:
+ raise BadArgs("Invalid urn or hrn")
+