- def _get_requested_leases_list(self, rspec):
- """
- Process leases in rspec depending on the rspec version (format)
- type. Find the lease requests in the rspec and creates
- a lease request list with the mandatory information ( nodes,
- start time and duration) of the valid leases (duration above or
- equal to the iotlab experiment minimum duration).
-
- :param rspec: rspec request received.
- :type rspec: RSpec
- :returns: list of lease requests found in the rspec
- :rtype: list
- """
- requested_lease_list = []
- for lease in rspec.version.get_leases():
- single_requested_lease = {}
- logger.debug("IOTLABDRIVER.PY \t \
- _get_requested_leases_list lease %s " % (lease))
-
- if not lease.get('lease_id'):
- if get_authority(lease['component_id']) == \
- self.testbed_shell.root_auth:
- single_requested_lease['hostname'] = \
- xrn_to_hostname(\
- lease.get('component_id').strip())
- single_requested_lease['start_time'] = \
- lease.get('start_time')
- single_requested_lease['duration'] = lease.get('duration')
- #Check the experiment's duration is valid before adding
- #the lease to the requested leases list
- duration_in_seconds = \
- int(single_requested_lease['duration'])
- if duration_in_seconds >= self.testbed_shell.GetMinExperimentDurationInGranularity():
- requested_lease_list.append(single_requested_lease)
-
- return requested_lease_list
-
- @staticmethod
- def _group_leases_by_start_time(requested_lease_list):
- """
- Create dict of leases by start_time, regrouping nodes reserved
- at the same time, for the same amount of time so as to
- define one job on OAR.
-
- :param requested_lease_list: list of leases
- :type requested_lease_list: list
- :returns: Dictionary with key = start time, value = list of leases
- with the same start time.
- :rtype: dictionary
-
- """
-
- requested_xp_dict = {}
- for lease in requested_lease_list:
-
- #In case it is an asap experiment start_time is empty
- if lease['start_time'] == '':
- lease['start_time'] = '0'
-
- if lease['start_time'] not in requested_xp_dict:
- if isinstance(lease['hostname'], str):
- lease['hostname'] = [lease['hostname']]
-
- requested_xp_dict[lease['start_time']] = lease
-
- else:
- job_lease = requested_xp_dict[lease['start_time']]
- if lease['duration'] == job_lease['duration']:
- job_lease['hostname'].append(lease['hostname'])
-
- return requested_xp_dict
-
- def _process_requested_xp_dict(self, rspec):
- """
- Turns the requested leases and information into a dictionary
- of requested jobs, grouped by starting time.
-
- :param rspec: RSpec received
- :type rspec : RSpec
- :rtype: dictionary
-
- """
- requested_lease_list = self._get_requested_leases_list(rspec)
- logger.debug("IOTLABDRIVER _process_requested_xp_dict \
- requested_lease_list %s" % (requested_lease_list))
- xp_dict = self._group_leases_by_start_time(requested_lease_list)
- logger.debug("IOTLABDRIVER _process_requested_xp_dict xp_dict\
- %s" % (xp_dict))
-
- return xp_dict
-
-
- def create_sliver(self, slice_urn, slice_hrn, creds, rspec_string,
- users, options):
- """Answer to CreateSliver.
-
- Creates the leases and slivers for the users from the information
- found in the rspec string.
- Launch experiment on OAR if the requested leases is valid. Delete
- no longer requested leases.
-
-
- :param creds: user's credentials
- :type creds: string
- :param users: user record list
- :type users: list
- :param options:
- :type options:
-
- :returns: a valid Rspec for the slice which has just been
- modified.
- :rtype: RSpec
-
-
- """
- aggregate = IotlabAggregate(self)
-
- slices = IotlabSlices(self)
- peer = slices.get_peer(slice_hrn)
- sfa_peer = slices.get_sfa_peer(slice_hrn)
- slice_record = None
-
- if not isinstance(creds, list):
- creds = [creds]
-
- if users:
- slice_record = users[0].get('slice_record', {})
- logger.debug("IOTLABDRIVER.PY \t ===============create_sliver \t\
- creds %s \r\n \r\n users %s"
- % (creds, users))
- slice_record['user'] = {'keys': users[0]['keys'],
- 'email': users[0]['email'],
- 'hrn': slice_record['reg-researchers'][0]}
- # parse rspec
- rspec = RSpec(rspec_string)
- logger.debug("IOTLABDRIVER.PY \t create_sliver \trspec.version \
- %s slice_record %s users %s"
- % (rspec.version, slice_record, users))
-
- # ensure site record exists?
- # ensure slice record exists
- #Removed options in verify_slice SA 14/08/12
- #Removed peer record in verify_slice SA 18/07/13
- sfa_slice = slices.verify_slice(slice_hrn, slice_record, sfa_peer)
-
- # ensure person records exists
- #verify_persons returns added persons but the return value
- #is not used
- #Removed peer record and sfa_peer in verify_persons SA 18/07/13
- slices.verify_persons(slice_hrn, sfa_slice, users, options=options)
- #requested_attributes returned by rspec.version.get_slice_attributes()
- #unused, removed SA 13/08/12
- #rspec.version.get_slice_attributes()
-
- logger.debug("IOTLABDRIVER.PY create_sliver slice %s " % (sfa_slice))
-
- # add/remove slice from nodes
-
- #requested_slivers = [node.get('component_id') \
- #for node in rspec.version.get_nodes_with_slivers()\
- #if node.get('authority_id') is self.testbed_shell.root_auth]
- #l = [ node for node in rspec.version.get_nodes_with_slivers() ]
- #logger.debug("SLADRIVER \tcreate_sliver requested_slivers \
- #requested_slivers %s listnodes %s" \
- #%(requested_slivers,l))
- #verify_slice_nodes returns nodes, but unused here. Removed SA 13/08/12.
- #slices.verify_slice_nodes(sfa_slice, requested_slivers, peer)
-
- requested_xp_dict = self._process_requested_xp_dict(rspec)
-
- logger.debug("IOTLABDRIVER.PY \tcreate_sliver requested_xp_dict %s "
- % (requested_xp_dict))
- #verify_slice_leases returns the leases , but the return value is unused
- #here. Removed SA 13/08/12
- slices.verify_slice_leases(sfa_slice,
- requested_xp_dict, peer)
-
- return aggregate.get_rspec(slice_xrn=slice_urn,
- login=sfa_slice['login'],
- version=rspec.version)
-
- def delete_sliver(self, slice_urn, slice_hrn, creds, options):
- """
- Deletes the lease associated with the slice hrn and the credentials
- if the slice belongs to iotlab. Answer to DeleteSliver.
-
- :param slice_urn: urn of the slice
- :param slice_hrn: name of the slice
- :param creds: slice credenials
- :type slice_urn: string
- :type slice_hrn: string
- :type creds: ? unused
-
- :returns: 1 if the slice to delete was not found on iotlab,
- True if the deletion was successful, False otherwise otherwise.
-
- .. note:: Should really be named delete_leases because iotlab does
- not have any slivers, but only deals with leases. However,
- SFA api only have delete_sliver define so far. SA 13/05/2013
- .. note:: creds are unused, and are not used either in the dummy driver
- delete_sliver .
- """
-
- sfa_slice_list = self.testbed_shell.GetSlices(
- slice_filter=slice_hrn,
- slice_filter_type='slice_hrn')
-
- if not sfa_slice_list:
- return 1
-
- #Delete all leases in the slice
- for sfa_slice in sfa_slice_list:
- logger.debug("IOTLABDRIVER.PY delete_sliver slice %s" % (sfa_slice))
- slices = IotlabSlices(self)
- # determine if this is a peer slice
-
- peer = slices.get_peer(slice_hrn)
-
- logger.debug("IOTLABDRIVER.PY delete_sliver peer %s \
- \r\n \t sfa_slice %s " % (peer, sfa_slice))
- try:
- self.testbed_shell.DeleteSliceFromNodes(sfa_slice)
- return True
- except:
- return False
-
- def list_resources (self, slice_urn, slice_hrn, creds, options):
- """
-
- List resources from the iotlab aggregate and returns a Rspec
- advertisement with resources found when slice_urn and slice_hrn are
- None (in case of resource discovery).
- If a slice hrn and urn are provided, list experiment's slice
- nodes in a rspec format. Answer to ListResources.
- Caching unused.
-
- :param slice_urn: urn of the slice
- :param slice_hrn: name of the slice
- :param creds: slice credenials
- :type slice_urn: string
- :type slice_hrn: string
- :type creds: ? unused
- :param options: options used when listing resources (list_leases, info,
- geni_available)
- :returns: rspec string in xml
- :rtype: string
-
- .. note:: creds are unused
- """
-
- #cached_requested = options.get('cached', True)
-
- version_manager = VersionManager()
- # get the rspec's return format from options
- rspec_version = \
- version_manager.get_version(options.get('geni_rspec_version'))
- version_string = "rspec_%s" % (rspec_version)
-
- #panos adding the info option to the caching key (can be improved)
- if options.get('info'):
- version_string = version_string + "_" + \
- options.get('info', 'default')
-
- # Adding the list_leases option to the caching key
- if options.get('list_leases'):
- version_string = version_string + "_" + \
- options.get('list_leases', 'default')
-
- # Adding geni_available to caching key
- if options.get('geni_available'):
- version_string = version_string + "_" + \
- str(options.get('geni_available'))
-
- # look in cache first
- #if cached_requested and self.cache and not slice_hrn:
- #rspec = self.cache.get(version_string)
- #if rspec:
- #logger.debug("IotlabDriver.ListResources: \
- #returning cached advertisement")
- #return rspec
-
- #panos: passing user-defined options
- aggregate = IotlabAggregate(self)
-
- rspec = aggregate.get_rspec(slice_xrn=slice_urn,
- version=rspec_version, options=options)
-
- # cache the result
- #if self.cache and not slice_hrn:
- #logger.debug("Iotlab.ListResources: stores advertisement in cache")
- #self.cache.add(version_string, rspec)
-