mirror of
https://github.com/ets-labs/python-dependency-injector.git
synced 2025-01-31 11:51:39 +03:00
Update catalog bundle and dynamic catalog api docs
This commit is contained in:
Roman Mogilatov
parent
9e4138da96
commit
801716fd92
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@ -16,14 +16,28 @@ class CatalogBundle(object):
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"""Bundle of catalog providers."""
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catalog = None
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""":type: DeclarativeCatalog"""
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"""Bundle's catalog.
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:type: :py:class:`dependency_injector.catalogs.DeclarativeCatalog` |
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:py:class:`dependency_injector.catalogs.DynamicCatalog`
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"""
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__IS_CATALOG_BUNDLE__ = True
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__slots__ = ('providers', '__dict__')
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def __init__(self, *providers):
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"""Initializer."""
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"""Initializer.
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:param providers: Tuple of catalog's bundle providers
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:type providers: tuple[
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:py:class:`dependency_injector.providers.Provider`]
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"""
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self.providers = dict()
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"""Dictionary of all providers.
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:type: dict[str, :py:class:`dependency_injector.providers.Provider`]
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"""
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for provider in providers:
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provider_name = self.catalog.get_provider_bind_name(provider)
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self.providers[provider_name] = provider
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@ -32,15 +46,25 @@ class CatalogBundle(object):
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@classmethod
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def sub_cls_factory(cls, catalog):
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"""Create bundle class for catalog.
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"""Create bundle subclass for catalog.
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:rtype: CatalogBundle
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:return: Subclass of CatalogBundle
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:return: Subclass of
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:py:class:`dependency_injector.catalogs.CatalogBundle`
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:rtype: :py:class:`dependency_injector.catalogs.CatalogBundle`
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"""
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return type('BundleSubclass', (cls,), dict(catalog=catalog))
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def get_provider(self, name):
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"""Return provider with specified name or raise an error."""
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"""Return provider with specified name or raise an error.
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:param name: Provider's name
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:type name: str
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:raise: :py:class:`dependency_injector.errors.UndefinedProviderError`
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:return: Provider with specified name
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:rtype: :py:class:`dependency_injector.providers.Provider`
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"""
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try:
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return self.providers[name]
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except KeyError:
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@ -48,18 +72,33 @@ class CatalogBundle(object):
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self))
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def has_provider(self, name):
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"""Check if there is provider with certain name."""
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"""Check if there is provider with certain name.
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:param name: Provider's name
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:type name: str
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:rtype: bool
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"""
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return name in self.providers
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def __getattr__(self, item):
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"""Raise an error on every attempt to get undefined provider."""
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"""Return provider with specified name or raise en error.
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:param name: Attribute's name
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:type name: str
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:raise: :py:class:`dependency_injector.errors.UndefinedProviderError`
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"""
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if item.startswith('__') and item.endswith('__'):
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return super(CatalogBundle, self).__getattr__(item)
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raise UndefinedProviderError('Provider "{0}" is not a part '
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'of {1}'.format(item, self))
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def __repr__(self):
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"""Return string representation of catalog bundle."""
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"""Return string representation of catalog's bundle.
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:rtype: str
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"""
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return '<{0}.Bundle({1})>'.format(
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self.catalog.name, ', '.join(six.iterkeys(self.providers)))
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@ -68,7 +107,7 @@ class CatalogBundle(object):
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@six.python_2_unicode_compatible
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class DynamicCatalog(object):
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"""Catalog of providers."""
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"""Dynamic catalog of providers."""
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__IS_CATALOG__ = True
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__slots__ = ('name', 'providers', 'provider_names', 'overridden_by',
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@ -77,52 +116,107 @@ class DynamicCatalog(object):
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def __init__(self, **providers):
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"""Initializer.
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:type providers: dict[str, dependency_injector.providers.Provider]
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:param providers: Dictionary of catalog providers
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:type providers:
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dict[str, :py:class:`dependency_injector.providers.Provider`]
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"""
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self.name = '.'.join((self.__class__.__module__,
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self.__class__.__name__))
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self.providers = dict()
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self.provider_names = dict()
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self.overridden_by = tuple()
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self.Bundle = CatalogBundle.sub_cls_factory(self)
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"""Catalog's bundle class.
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:type: :py:class:`dependency_injector.catalogs.CatalogBundle`
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"""
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self.name = '.'.join((self.__class__.__module__,
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self.__class__.__name__))
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"""Catalog's name.
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By default, it is catalog's module + catalog's class name.
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:type: str
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"""
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self.providers = dict()
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"""Dictionary of all providers.
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:type: dict[str, :py:class:`dependency_injector.providers.Provider`]
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"""
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self.provider_names = dict()
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self.overridden_by = tuple()
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"""Tuple of overriding catalogs.
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:type: tuple[
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:py:class:`dependency_injector.catalogs.DeclarativeCatalog` |
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:py:class:`dependency_injector.catalogs.DynamicCatalog`]
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"""
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self.bind_providers(providers)
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super(DynamicCatalog, self).__init__()
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def is_bundle_owner(self, bundle):
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"""Check if catalog is bundle owner."""
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"""Check if catalog is bundle owner.
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:param bundle: Catalog's bundle instance
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:type bundle: :py:class:`dependency_injector.catalogs.CatalogBundle`
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:rtype: bool
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"""
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return ensure_is_catalog_bundle(bundle) and bundle.catalog is self
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def get_provider_bind_name(self, provider):
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"""Return provider's name in catalog."""
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"""Return provider's name in catalog.
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:param provider: Provider instance
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:type provider: :py:class:`dependency_injector.providers.Provider`
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:raise: :py:class:`dependency_injector.errors.UndefinedProviderError`
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:return: Provider's name
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:rtype: str
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"""
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if not self.is_provider_bound(provider):
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raise Error('Can not find bind name for {0} in catalog {1}'.format(
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provider, self))
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return self.provider_names[provider]
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def is_provider_bound(self, provider):
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"""Check if provider is bound to the catalog."""
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"""Check if provider is bound to the catalog.
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:param provider: Provider instance
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:type provider: :py:class:`dependency_injector.providers.Provider`
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:rtype: bool
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"""
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return provider in self.provider_names
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def filter(self, provider_type):
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"""Return dict of providers, that are instance of provided type."""
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"""Return dictionary of providers, that are instance of provided type.
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:param provider_type: Provider type
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:type provider_type: :py:class:`dependency_injector.providers.Provider`
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:rtype: dict[str, :py:class:`dependency_injector.providers.Provider`]
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"""
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return dict((name, provider)
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for name, provider in six.iteritems(self.providers)
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if isinstance(provider, provider_type))
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@property
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def is_overridden(self):
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"""Check if catalog is overridden by another catalog."""
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"""Read-only property that is set to True if catalog is overridden.
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:rtype: bool
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"""
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return bool(self.overridden_by)
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@property
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def last_overriding(self):
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"""Return last overriding catalog."""
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"""Read-only reference to the last overriding catalog, if any.
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:type: :py:class:`dependency_injector.catalogs.DeclarativeCatalog` |
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:py:class:`dependency_injector.catalogs.DynamicCatalog`
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"""
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try:
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return self.overridden_by[-1]
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except (TypeError, IndexError):
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@ -131,14 +225,22 @@ class DynamicCatalog(object):
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def override(self, overriding):
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"""Override current catalog providers by overriding catalog providers.
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:type overriding: DynamicCatalog
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:param overriding: Overriding catalog
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:type overriding:
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:py:class:`dependency_injector.catalogs.DeclarativeCatalog` |
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:py:class:`dependency_injector.catalogs.DynamicCatalog`
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:rtype: None
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"""
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self.overridden_by += (overriding,)
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for name, provider in six.iteritems(overriding.providers):
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self.get_provider(name).override(provider)
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def reset_last_overriding(self):
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"""Reset last overriding catalog."""
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"""Reset last overriding catalog.
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:rtype: None
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"""
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if not self.is_overridden:
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raise Error('Catalog {0} is not overridden'.format(self))
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self.overridden_by = self.overridden_by[:-1]
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@ -146,13 +248,25 @@ class DynamicCatalog(object):
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provider.reset_last_overriding()
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def reset_override(self):
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"""Reset all overridings for all catalog providers."""
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"""Reset all overridings for all catalog providers.
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:rtype: None
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"""
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self.overridden_by = tuple()
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for provider in six.itervalues(self.providers):
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provider.reset_override()
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def get_provider(self, name):
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"""Return provider with specified name or raise an error."""
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"""Return provider with specified name or raise an error.
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:param name: Provider's name
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:type name: str
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:raise: :py:class:`dependency_injector.errors.UndefinedProviderError`
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:return: Provider with specified name
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:rtype: :py:class:`dependency_injector.providers.Provider`
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"""
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try:
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return self.providers[name]
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except KeyError:
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@ -160,7 +274,18 @@ class DynamicCatalog(object):
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'name - {1}'.format(self, name))
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def bind_provider(self, name, provider):
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"""Bind provider to catalog with specified name."""
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"""Bind provider to catalog with specified name.
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:param name: Name of the provider
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:type name: str
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:param provider: Provider instance
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:type provider: :py:class:`dependency_injector.providers.Provider`
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:raise: :py:class:`dependency_injector.errors.Error`
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:rtype: None
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"""
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provider = ensure_is_provider(provider)
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if name in self.providers:
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@ -174,29 +299,66 @@ class DynamicCatalog(object):
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self.provider_names[provider] = name
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def bind_providers(self, providers):
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"""Bind providers dictionary to catalog."""
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"""Bind providers dictionary to catalog.
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:param providers: Dictionary of providers, where key is a name
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and value is a provider
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:type providers:
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dict[str, :py:class:`dependency_injector.providers.Provider`]
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:raise: :py:class:`dependency_injector.errors.Error`
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:rtype: None
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"""
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for name, provider in six.iteritems(providers):
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self.bind_provider(name, provider)
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def has_provider(self, name):
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"""Check if there is provider with certain name."""
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"""Check if there is provider with certain name.
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:param name: Provider's name
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:type name: str
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:rtype: bool
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"""
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return name in self.providers
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def unbind_provider(self, name):
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"""Remove provider binding."""
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"""Remove provider binding.
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:param name: Provider's name
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:type name: str
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:rtype: None
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"""
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provider = self.get_provider(name)
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del self.providers[name]
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del self.provider_names[provider]
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def __getattr__(self, name):
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"""Return provider with specified name or raise en error."""
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"""Return provider with specified name or raise en error.
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:param name: Attribute's name
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:type name: str
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:raise: :py:class:`dependency_injector.errors.UndefinedProviderError`
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"""
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return self.get_provider(name)
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def __setattr__(self, name, value):
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"""Handle setting of catalog attributes.
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Setting of attributes works as usual, but if value of attribute is
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provider, this provider will be bound to catalog correctly.
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provider, this provider will be bound to catalog.
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:param name: Attribute's name
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:type name: str
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:param value: Attribute's value
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:type value: :py:class:`dependency_injector.providers.Provider` |
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object
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:rtype: None
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"""
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if is_provider(value):
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return self.bind_provider(name, value)
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@ -206,12 +368,20 @@ class DynamicCatalog(object):
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"""Handle deleting of catalog attibute.
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Deleting of attributes works as usual, but if value of attribute is
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provider, this provider will be unbound from catalog correctly.
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provider, this provider will be unbound from catalog.
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:param name: Attribute's name
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:type name: str
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:rtype: None
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"""
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self.unbind_provider(name)
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def __repr__(self):
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"""Return Python representation of catalog."""
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"""Return Python representation of catalog.
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:rtype: str
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"""
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return '<{0}({1})>'.format(self.name,
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', '.join(six.iterkeys(self.providers)))
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@ -278,7 +448,7 @@ class DeclarativeCatalogMetaClass(type):
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@property
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def is_overridden(cls):
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"""Check if catalog is overridden by another catalog.
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"""Read-only property that is set to True if catalog is overridden.
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:rtype: bool
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"""
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@ -453,10 +623,12 @@ class DeclarativeCatalog(object):
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@classmethod
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def filter(cls, provider_type):
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"""Return dict of providers, that are instance of provided type.
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"""Return dictionary of providers, that are instance of provided type.
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:param provider_type: Provider type
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:type provider: :py:class:`dependency_injector.providers.Provider`
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:type provider_type: :py:class:`dependency_injector.providers.Provider`
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:rtype: dict[str, :py:class:`dependency_injector.providers.Provider`]
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"""
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return cls._catalog.filter(provider_type)
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