app/soc/logic/models/host.py
author Sverre Rabbelier <srabbelier@gmail.com>
Sun, 19 Apr 2009 17:42:44 +0000
changeset 2246 c29272f640b0
parent 1955 06ed84dbb1ed
child 2664 06d4f4d06f64
permissions -rw-r--r--
Tweak the 'load balancing' algorithm In order to reduce contention we randomly skipped jobs, but this caused many jobs to end up stopping early. Now instead we keep on going until we time out (also increased the chance of doing work). Patch by: Sverre Rabbelier

#!/usr/bin/python2.5
#
# Copyright 2008 the Melange authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#   http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

"""Host (Model) query functions.
"""

__authors__ = [
  '"Sverre Rabbelier" <sverre@rabbelier.nl>',
  '"Lennard de Rijk" <ljvderijk@gmail.com>',
  ]


from soc.logic.models import role
from soc.logic.models import sponsor as sponsor_logic

import soc.models.host
import soc.models.role


class Logic(role.Logic):
  """Logic methods for the Host model.
  """

  def __init__(self, model=soc.models.host.Host, 
               base_model=soc.models.role.Role, scope_logic=sponsor_logic,
               disallow_last_resign=True):
    """Defines the name, key_name and model for this entity.
    """

    super(Logic, self).__init__(model=model, base_model=base_model,
                                scope_logic=scope_logic,
                                disallow_last_resign=disallow_last_resign)


  def _onCreate(self, entity):
    """Marks the Sponsor for this Host as active it's status is new.
    """

    sponsor_entity = entity.scope

    if sponsor_entity.status == 'new':
      # this sponsor is new so mark as active
      fields = {'status': 'active'}
      sponsor_logic.logic.updateEntityProperties(sponsor_entity, fields)

    # call super
    super(Logic, self)._onCreate(entity)


logic = Logic()