OpenStack Study: __init__.py

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# Copyright (c) 2012-2013 Rackspace Hosting

# All Rights Reserved.

#

# 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.

"""

Cell Scheduler weights

"""

from nova import weights

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class WeightedCell(weights.WeighedObject):

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    def __repr__(self):

        return "WeightedCell [cell: %s, weight: %s]" % (

                self.obj.name, self.weight)

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class BaseCellWeigher(weights.BaseWeigher):

"""Base class for cell weights."""

pass

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class CellWeightHandler(weights.BaseWeightHandler):

object_class = WeightedCell

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    def __init__(self):

        super(CellWeightHandler, self).__init__(BaseCellWeigher)

def all_weighers():

    """Return a list of weight plugin classes found in this directory."""

    return CellWeightHandler().get_all_classes()

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def all_weighers():

    """Return a list of weight plugin classes found in this directory."""

    return CellWeightHandler().get_all_classes()