def _clean_current_reservation(self, reservation_id):
client = self.redis_maker()
enqueue_free_experiment_args = None
if reservation_id is not None:
weblab_reservation_pqueue = WEBLAB_RESOURCE_RESERVATION_PQUEUE % (self.resource_type_name, reservation_id)
reservation_data_str = client.get(weblab_reservation_pqueue)
if reservation_data_str is not None:
downgraded = self.reservations_manager.downgrade_confirmation(reservation_id)
if downgraded:
reservation_data = json.loads(reservation_data_str)
resource_instance_str = reservation_data.get(RESOURCE_INSTANCE)
if resource_instance_str is not None:
resource_instance = Resource.parse(resource_instance_str)
weblab_resource_pqueue_instance_reservations = WEBLAB_RESOURCE_PQUEUE_INSTANCE_RESERVATIONS % (resource_instance.resource_type, resource_instance.resource_instance)
client.srem(weblab_resource_pqueue_instance_reservations, reservation_id)
# print "RELEASING AT _clean_current_reservation. SHOULD NEVER HAPPEN."
# self.resources_manager.release_resource(resource_instance)
lab_session_id = reservation_data.get(LAB_SESSION_ID)
experiment_instance_str = reservation_data.get(EXPERIMENT_INSTANCE)
experiment_instance_id = ExperimentInstanceId.parse(experiment_instance_str)
if experiment_instance_id is not None:
# If the experiment instance doesn't exist, there is no need to call the free_experiment method
lab_coord_address = reservation_data.get(LAB_COORD)
enqueue_free_experiment_args = (lab_coord_address, reservation_id, lab_session_id, experiment_instance_id)
# otherwise the student has been removed
return enqueue_free_experiment_args
def _clean_current_reservation(self, reservation_id):
client = self.redis_maker()
enqueue_free_experiment_args = None
if reservation_id is not None:
weblab_reservation_pqueue = WEBLAB_RESOURCE_RESERVATION_PQUEUE % (self.resource_type_name, reservation_id)
reservation_data_str = client.get(weblab_reservation_pqueue)
if reservation_data_str is not None:
downgraded = self.reservations_manager.downgrade_confirmation(reservation_id)
if downgraded:
reservation_data = json.loads(reservation_data_str)
resource_instance_str = reservation_data.get(RESOURCE_INSTANCE)
if resource_instance_str is not None:
resource_instance = Resource.parse(resource_instance_str)
weblab_resource_pqueue_instance_reservations = WEBLAB_RESOURCE_PQUEUE_INSTANCE_RESERVATIONS % (resource_instance.resource_type, resource_instance.resource_instance)
client.srem(weblab_resource_pqueue_instance_reservations, reservation_id)
self.resources_manager.release_resource(resource_instance)
lab_session_id = reservation_data.get(LAB_SESSION_ID)
experiment_instance_str = reservation_data.get(EXPERIMENT_INSTANCE)
experiment_instance_id = ExperimentInstanceId.parse(experiment_instance_str)
if experiment_instance_id is not None:
# If the experiment instance doesn't exist, there is no need to call the free_experiment method
lab_coord_address = reservation_data.get(LAB_COORD)
enqueue_free_experiment_args = (lab_coord_address, reservation_id, lab_session_id, experiment_instance_id)
# otherwise the student has been removed
return enqueue_free_experiment_args
def list_experiment_instance_ids_by_resource(self, resource):
client = self._redis_maker()
experiment_instance_ids = []
weblab_resource_instance_experiments = WEBLAB_RESOURCE_INSTANCE_EXPERIMENTS % (resource.resource_type, resource.resource_instance)
current_members = client.smembers(weblab_resource_instance_experiments) or []
for member in current_members:
experiment_instance_id = ExperimentInstanceId.parse(member)
experiment_instance_ids.append(experiment_instance_id)
return experiment_instance_ids
def remove_resource_instance(self, resource):
client = self._redis_maker()
weblab_resource = WEBLAB_RESOURCE % resource.resource_type
if client.srem(weblab_resource, resource.resource_instance):
# else it did not exist
weblab_resource_instance_experiments = WEBLAB_RESOURCE_INSTANCE_EXPERIMENTS % (resource.resource_type, resource.resource_instance)
experiment_instances = client.smembers(weblab_resource_instance_experiments) or []
client.delete(weblab_resource_instance_experiments)
for experiment_instance in experiment_instances:
experiment_instance_id = ExperimentInstanceId.parse(experiment_instance)
self.remove_resource_instance_id(experiment_instance_id)
def list_experiment_instance_ids_by_resource(self, resource):
client = self._redis_maker()
experiment_instance_ids = []
weblab_resource_instance_experiments = WEBLAB_RESOURCE_INSTANCE_EXPERIMENTS % (resource.resource_type, resource.resource_instance)
current_members = client.smembers(weblab_resource_instance_experiments) or []
for member in current_members:
experiment_instance_id = ExperimentInstanceId.parse(member)
experiment_instance_ids.append(experiment_instance_id)
return experiment_instance_ids
def remove_resource_instance(self, resource):
client = self._redis_maker()
weblab_resource = WEBLAB_RESOURCE % resource.resource_type
if client.srem(weblab_resource, resource.resource_instance):
# else it did not exist
weblab_resource_instance_experiments = WEBLAB_RESOURCE_INSTANCE_EXPERIMENTS % (resource.resource_type, resource.resource_instance)
experiment_instances = client.smembers(weblab_resource_instance_experiments) or []
client.delete(weblab_resource_instance_experiments)
for experiment_instance in experiment_instances:
experiment_instance_id = ExperimentInstanceId.parse(experiment_instance)
self.remove_resource_instance_id(experiment_instance_id)