54 lines
2.5 KiB
Python
54 lines
2.5 KiB
Python
# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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# implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""Symbols intended to be imported by both placement code and placement API
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consumers. When placement is separated out, this module should be part of a
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common library that both placement and its consumers can require."""
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class RequestGroup(object):
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def __init__(self, use_same_provider=True, resources=None,
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required_traits=None, forbidden_traits=None, member_of=None):
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"""Create a grouping of resource and trait requests.
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:param use_same_provider:
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If True, (the default) this RequestGroup represents requests for
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resources and traits which must be satisfied by a single resource
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provider. If False, represents a request for resources and traits
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in any resource provider in the same tree, or a sharing provider.
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:param resources: A dict of { resource_class: amount, ... }
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:param required_traits: A set of { trait_name, ... }
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:param forbidden_traits: A set of { trait_name, ... }
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:param member_of: A list of [ [aggregate_UUID],
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[aggregate_UUID, aggregate_UUID] ... ]
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"""
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self.use_same_provider = use_same_provider
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self.resources = resources or {}
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self.required_traits = required_traits or set()
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self.forbidden_traits = forbidden_traits or set()
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self.member_of = member_of or []
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def __str__(self):
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ret = 'RequestGroup(use_same_provider=%s' % str(self.use_same_provider)
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ret += ', resources={%s}' % ', '.join(
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'%s:%d' % (rc, amount)
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for rc, amount in sorted(list(self.resources.items())))
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ret += ', traits=[%s]' % ', '.join(
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sorted(self.required_traits) +
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['!%s' % ft for ft in self.forbidden_traits])
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ret += ', aggregates=[%s]' % ', '.join(
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sorted('[%s]' % ', '.join(agglist)
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for agglist in sorted(self.member_of)))
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ret += ')'
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return ret
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