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 2009 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.
"""Priority Group (Model) query functions.
"""
__authors__ = [
'"Sverre Rabbelier" <sverre@rabbelier.nl>',
]
from soc.logic.models import base
import soc.models.priority_group
class Logic(base.Logic):
"""Logic methods for the Priority Group model.
"""
def __init__(self, model=soc.models.priority_group.PriorityGroup,
base_model=None, scope_logic=None):
"""Defines the name, key_name and model for this entity.
"""
self.EMAIL = 'emails'
self.CONVERT = 'convert'
self.groups = {
self.EMAIL: 'Send out emails',
self.CONVERT: 'Convert one entity to another type',
}
super(Logic, self).__init__(model=model, base_model=base_model,
scope_logic=scope_logic)
def getKeyValuesFromEntity(self, entity):
"""See base.Logic.getKeyValuesFromEntity.
"""
return [entity.link_id]
def getKeyValuesFromFields(self, fields):
"""See base.Logic.getKeyValuesFromFields.
"""
return [fields['link_id']]
def getKeyFieldNames(self):
"""See base.Logic.getKeyFieldNames.
"""
return ['link_id']
def getGroup(self, key_name):
"""Return the specified Priority Group entity.
"""
if key_name not in self.groups:
raise base.InvalidArgumentError("Unknown priority group %s." % key_name)
group = self.getFromKeyName(key_name)
if not group:
fields = {
'link_id': key_name,
'name': self.groups[key_name],
'priority': 0,
}
group = self.updateOrCreateFromKeyName(fields, key_name)
return group
logic = Logic()