mirror of
https://github.com/ets-labs/python-dependency-injector.git
synced 2024-11-22 01:26:51 +03:00
Drop Config provider
This commit is contained in:
Roman Mogilatov
parent
1320c12780
commit
4a160ed999
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@ -16,10 +16,6 @@ from dependency_injector.providers.creational import (
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Singleton,
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DelegatedSingleton,
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)
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from dependency_injector.providers.config import (
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Config,
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ChildConfig,
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)
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from dependency_injector.providers.utils import (
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OverridingContext,
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override,
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@ -40,9 +36,6 @@ __all__ = (
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'Singleton',
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'DelegatedSingleton',
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'Config',
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'ChildConfig',
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'OverridingContext',
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'override',
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)
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@ -1,138 +0,0 @@
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"""Dependency injector config providers."""
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import six
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from dependency_injector.providers.base import Provider
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from dependency_injector.utils import represent_provider
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from dependency_injector.errors import Error
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@six.python_2_unicode_compatible
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class Config(Provider):
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""":py:class:`Config` provider provide dict values.
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:py:class:`Config` provider creates :py:class:`ChildConfig` objects for all
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undefined attribute calls. It makes possible to create deferred config
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value providers. It might be useful in cases where it is needed to
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define / pass some configuration in declarative manner, while
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configuration values will be loaded / updated in application's runtime.
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"""
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__slots__ = ('value',)
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def __init__(self, value=None):
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"""Initializer.
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:param value: Configuration dictionary.
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:type value: dict[str, object]
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"""
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if not value:
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value = dict()
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self.value = value
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super(Config, self).__init__()
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def __getattr__(self, item):
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"""Return instance of deferred config.
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:param item: Name of configuration option or section.
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:type item: str
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:rtype: :py:class:`ChildConfig`
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"""
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return ChildConfig(parents=(item,), root_config=self)
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def _provide(self, paths=None):
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"""Return provided instance.
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:param paths: Tuple of pieces of configuration option / section path.
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:type args: tuple[str]
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:rtype: object
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"""
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value = self.value
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if paths:
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for path in paths:
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try:
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value = value[path]
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except KeyError:
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raise Error('Config key '
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'"{0}" is undefined'.format('.'.join(paths)))
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return value
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def update_from(self, value):
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"""Update current value from another one.
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:param value: Configuration dictionary.
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:type value: dict[str, object]
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:rtype: None
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"""
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self.value.update(value)
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def __str__(self):
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"""Return string representation of provider.
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:rtype: str
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"""
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return represent_provider(provider=self, provides=self.value)
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__repr__ = __str__
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@six.python_2_unicode_compatible
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class ChildConfig(Provider):
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""":py:class:`ChildConfig` provider provides value from :py:class:`Config`.
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:py:class:`ChildConfig` provides value from the root config object
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according to the current path in the config tree.
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"""
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__slots__ = ('parents', 'root_config')
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def __init__(self, parents, root_config):
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"""Initializer.
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:param parents: Tuple of pieces of configuration option / section
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parent path.
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:type parents: tuple[str]
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:param root_config: Root configuration object.
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:type root_config: :py:class:`Config`
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"""
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self.parents = parents
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self.root_config = root_config
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super(ChildConfig, self).__init__()
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def __getattr__(self, item):
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"""Return instance of deferred config.
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:param item: Name of configuration option or section.
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:type item: str
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:rtype: :py:class:`ChildConfig`
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"""
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return ChildConfig(parents=self.parents + (item,),
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root_config=self.root_config)
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def _provide(self, *args, **kwargs):
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"""Return provided instance.
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:param args: Tuple of context positional arguments.
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:type args: tuple[object]
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:param kwargs: Dictionary of context keyword arguments.
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:type kwargs: dict[str, object]
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:rtype: object
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"""
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return self.root_config(self.parents)
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def __str__(self):
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"""Return string representation of provider.
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:rtype: str
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"""
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return represent_provider(provider=self,
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provides='.'.join(self.parents))
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__repr__ = __str__
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@ -14,7 +14,12 @@ Development version
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2.0.0
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------
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- Drop backward compatibilities of 1.x.
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- Drop ``Static``, ``Value``, ``Function`` & ``Class`` providers.
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- Drop providers:
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- ``Static``
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- ``Value``
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- ``Function``
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- ``Class``
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- ``Config``
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1.17.0
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------
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@ -1,87 +0,0 @@
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"""Dependency injector config providers unittests."""
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import unittest2 as unittest
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from dependency_injector import (
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providers,
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utils,
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errors,
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)
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class ConfigTests(unittest.TestCase):
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"""Config test cases."""
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def setUp(self):
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"""Set test cases environment up."""
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self.initial_data = dict(key='value',
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category=dict(setting='setting_value'))
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self.provider = providers.Config(self.initial_data)
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def test_is_provider(self):
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"""Test `is_provider` check."""
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self.assertTrue(utils.is_provider(self.provider))
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def test_init_without_initial_value(self):
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"""Test provider's creation with no initial value."""
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self.assertEqual(providers.Config()(), dict())
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def test_call(self):
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"""Test returning of config value."""
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self.assertEqual(self.provider(), self.initial_data)
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def test_update_from(self):
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"""Test update of config value."""
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self.assertEqual(self.provider(), self.initial_data)
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self.initial_data['key'] = 'other_value'
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self.provider.update_from(self.initial_data)
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self.assertEqual(self.provider(), self.initial_data)
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def test_call_child(self):
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"""Test returning of child config values."""
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category = self.provider.category
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category_setting = self.provider.category.setting
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self.assertTrue(utils.is_provider(category))
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self.assertTrue(utils.is_provider(category_setting))
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self.assertEqual(category(), self.initial_data['category'])
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self.assertEqual(category_setting(),
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self.initial_data['category']['setting'])
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def test_call_deferred_child_and_update_from(self):
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"""Test returning of deferred child config values."""
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self.provider = providers.Config()
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category = self.provider.category
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category_setting = self.provider.category.setting
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self.assertTrue(utils.is_provider(category))
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self.assertTrue(utils.is_provider(category_setting))
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self.provider.update_from(self.initial_data)
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self.assertEqual(category(), self.initial_data['category'])
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self.assertEqual(category_setting(),
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self.initial_data['category']['setting'])
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def test_call_deferred_child_with_empty_value(self):
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"""Test returning of deferred child config values."""
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self.provider = providers.Config()
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category_setting = self.provider.category.setting
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self.assertRaises(errors.Error, category_setting)
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def test_repr(self):
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"""Test representation of provider."""
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self.assertEqual(repr(self.provider),
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'<dependency_injector.providers.config.'
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'Config({0}) at {1}>'.format(
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repr(self.initial_data),
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hex(id(self.provider))))
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category_setting = self.provider.category.setting
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self.assertEqual(repr(category_setting),
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'<dependency_injector.providers.config.'
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'ChildConfig({0}) at {1}>'.format(
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repr('.'.join(('category', 'setting'))),
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hex(id(category_setting))))
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