15a9842bd2
Remove RelationAdapters and add contexts to relation handlers. Other thing of note is that default handlers are registered based on a charms metadata.
59 lines
1.7 KiB
Python
59 lines
1.7 KiB
Python
# Copyright 2021 Canonical Ltd.
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#
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# 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 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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"""Base classes for defining a charm using the Operator framework.
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ConfigContext objects can be used when rendering templates. They idea is to
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create reusable contexts which translate charm config, deployment state etc.
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These are not specific to a relation.
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"""
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import logging
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logger = logging.getLogger(__name__)
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class ConfigContext():
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def __init__(self, charm, namespace):
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self.charm = charm
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self.namespace = namespace
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for k, v in self.context().items():
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k = k.replace('-', '_')
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setattr(self, k, v)
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@property
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def ready(self):
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return True
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def context(self):
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raise NotImplementedError
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class CharmConfigContext(ConfigContext):
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"""A context containing all of the charms config options"""
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def context(self) -> dict:
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return self.charm.config
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class WSGIWorkerConfigContext(ConfigContext):
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def context(self) -> dict:
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"""A context containing WSGI configuration options"""
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return {
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'name': self.charm.service_name,
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'wsgi_admin_script': self.charm.wsgi_admin_script,
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'wsgi_public_script': self.charm.wsgi_public_script}
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