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system_resolver is created based on loaded configuration, which could avoid calls like `GenericResolver.create(conf)` repeatedly in the code. However, if some cases need to create a specific resolver explicitly, `GenericResolver.create` could be called with addition argument, for example db or mbs is passed to argument backend in tests. Signed-off-by: Chenxiong Qi <cqi@redhat.com>
41 lines
1.9 KiB
Python
41 lines
1.9 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright (c) 2018 Red Hat, Inc.
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#
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# Permission is hereby granted, free of charge, to any person obtaining a copy
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# of this software and associated documentation files (the "Software"), to deal
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# in the Software without restriction, including without limitation the rights
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# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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# copies of the Software, and to permit persons to whom the Software is
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# furnished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included in all
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# copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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# SOFTWARE.
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#
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# Written by Filip Valder <fvalder@redhat.com>
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import pkg_resources
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from module_build_service import conf
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from module_build_service.resolver.base import GenericResolver
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# NOTE: if you are adding a new resolver to MBS please note that you also have to add
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# a new resolver to your setup.py and update you egg-info
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for entrypoint in pkg_resources.iter_entry_points('mbs.resolver_backends'):
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GenericResolver.register_backend_class(entrypoint.load())
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if not GenericResolver.backends:
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raise ValueError("No resolver plugins are installed or available.")
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# Config has the option of which resolver should be used for current MBS run.
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# Hence, create a singleton system wide resolver for use. However, resolver
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# could be created with other required arguments in concrete cases.
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system_resolver = GenericResolver.create(conf)
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