Source code for designate.scheduler.filters.fallback_filter

# Copyright 2016 Hewlett Packard Enterprise Development Company, L.P.
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# 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
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#      http://www.apache.org/licenses/LICENSE-2.0
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# Unless required by applicable law or agreed to in writing, software
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from oslo_config import cfg

from designate.scheduler.filters import base
from designate import objects

cfg.CONF.register_opts([
    cfg.StrOpt('default_pool_id',
               default='794ccc2c-d751-44fe-b57f-8894c9f5c842',
               help="The name of the default pool"),
], group='service:central')


[docs]class FallbackFilter(base.Filter): """If there is no zones available to schedule to, this filter will insert the default_pool_id. .. note:: This should be used as one of the last filters, if you want to preserve behavior from before the scheduler existed. """ name = 'fallback' """Name to enable in the ``[designate:central:scheduler].filters`` option list """ def filter(self, context, pools, zone): if len(pools) == 0: pools = objects.PoolList() pools.append( objects.Pool(id=cfg.CONF['service:central'].default_pool_id)) return pools else: return pools