import datetime from sfa.util.faults import InsufficientRights from sfa.util.xrn import urn_to_hrn from sfa.util.method import Method from sfa.util.parameter import Parameter from sfa.trust.credential import Credential from sfa.util.sfatime import utcparse class RenewSliver(Method): """ Renews the resources in a sliver, extending the lifetime of the slice. @param slice_urn (string) URN of slice to renew @param credentials ([string]) of credentials @param expiration_time (string) requested time of expiration """ interfaces = ['aggregate', 'slicemgr'] accepts = [ Parameter(str, "Slice URN"), Parameter(type([str]), "List of credentials"), Parameter(str, "Expiration time in RFC 3339 format"), Parameter(str, "call_id"), ] returns = Parameter(bool, "Success or Failure") def call(self, slice_xrn, creds, expiration_time, call_id=""): (hrn, type) = urn_to_hrn(slice_xrn) self.api.logger.info("interface: %s\ttarget-hrn: %s\tcaller-creds: %s\tmethod-name: %s"%(self.api.interface, hrn, creds, self.name)) # Find the valid credentials valid_creds = self.api.auth.checkCredentials(creds, 'renewsliver', hrn) # Validate that the time does not go beyond the credential's expiration time requested_time = utcparse(expiration_time) max_renew_days = int(self.api.config.SFA_MAX_SLICE_RENEW) if requested_time > Credential(string=valid_creds[0]).get_expiration(): raise InsufficientRights('Renewsliver: Credential expires before requested expiration time') if requested_time > datetime.datetime.utcnow() + datetime.timedelta(days=max_renew_days): raise Exception('Cannot renew > %s days from now' % max_renew_days) manager = self.api.get_interface_manager() return manager.RenewSliver(self.api, slice_xrn, valid_creds, expiration_time, call_id)