Source code for betty.project

"""
Provide the project API.

Projects are how people use Betty. A project is a workspace, starting out with the user's configuration,
and combining it with the resulting ancestry, allowing the user to perform tasks, such as generating a
site from the entire project.
"""

from __future__ import annotations

from contextlib import suppress, asynccontextmanager
from graphlib import TopologicalSorter, CycleError
from pathlib import Path
from reprlib import recursive_repr
from typing import (
    Any,
    Generic,
    final,
    Iterable,
    Self,
    TYPE_CHECKING,
    TypeVar,
    Iterator,
    overload,
)
from urllib.parse import urlparse

from aiofiles.tempfile import TemporaryDirectory
from typing_extensions import override

from betty import fs, event_dispatcher
from betty import model
from betty.assertion import (
    Assertion,
    RequiredField,
    OptionalField,
    assert_record,
    assert_setattr,
    assert_str,
    assert_bool,
    assert_dict,
    assert_locale,
    assert_int,
    assert_positive_number,
    assert_fields,
)
from betty.assertion.error import AssertionFailed
from betty.assets import AssetRepository
from betty.asyncio import wait_to_thread
from betty.classtools import repr_instance
from betty.config import (
    Configuration,
    Configurable,
)
from betty.config.collections.mapping import ConfigurationMapping
from betty.config.collections.sequence import ConfigurationSequence
from betty.core import CoreComponent
from betty.event_dispatcher import EventDispatcher, EventHandlerRegistry
from betty.hashid import hashid
from betty.locale import DEFAULT_LOCALE
from betty.locale.localizable import _, ShorthandStaticTranslations
from betty.locale.localizable.config import (
    StaticTranslationsLocalizableConfigurationProperty,
)
from betty.locale.localizer import LocalizerRepository
from betty.model import Entity, UserFacingEntity
from betty.model.ancestry import Ancestry, Person, Event, Place, Source
from betty.plugin.assertion import assert_plugin
from betty.project import extension
from betty.project.extension import (
    Extension,
    ConfigurableExtension,
    build_extension_type_graph,
    CyclicDependencyError,
)
from betty.project.factory import ProjectDependentFactory
from betty.render import Renderer, SequentialRenderer
from betty.serde.dump import (
    Dump,
    VoidableDump,
    void_none,
    minimize,
    VoidableDumpMapping,
)
from betty.serde.format import FormatRepository
from betty.typing import Void

if TYPE_CHECKING:
    from betty.machine_name import MachineName
    from collections.abc import AsyncIterator, Sequence
    from betty.app import App
    from betty.url import LocalizedUrlGenerator, StaticUrlGenerator
    from betty.jinja2 import Environment

_EntityT = TypeVar("_EntityT", bound=Entity)


#: The default age by which people are presumed dead.
DEFAULT_LIFETIME_THRESHOLD = 125


[docs] @final class EntityReference(Configuration, Generic[_EntityT]): """ Configuration that references an entity from the project's ancestry. """
[docs] def __init__( self, entity_type: type[_EntityT] | None = None, entity_id: str | None = None, *, entity_type_is_constrained: bool = False, ): super().__init__() self._entity_type = entity_type self._entity_id = entity_id self._entity_type_is_constrained = entity_type_is_constrained
@property def entity_type(self) -> type[_EntityT] | None: """ The referenced entity's type. """ return self._entity_type @entity_type.setter def entity_type(self, entity_type: type[_EntityT]) -> None: if self._entity_type_is_constrained: raise AttributeError( f"The entity type cannot be set, as it is already constrained to {self._entity_type}." ) self._entity_type = entity_type @property def entity_id(self) -> str | None: """ The referenced entity's ID. """ return self._entity_id @entity_id.setter def entity_id(self, entity_id: str) -> None: self._entity_id = entity_id @entity_id.deleter def entity_id(self) -> None: self._entity_id = None @property def entity_type_is_constrained(self) -> bool: """ Whether the entity type may be changed. """ return self._entity_type_is_constrained
[docs] @override def update(self, other: Self) -> None: self._entity_type = other._entity_type self._entity_type_is_constrained = other._entity_type_is_constrained self._entity_id = other._entity_id
[docs] @override def load( self, dump: Dump, ) -> None: if isinstance(dump, dict) or not self.entity_type_is_constrained: assert_record( RequiredField( "entity_type", assert_plugin(model.ENTITY_TYPE_REPOSITORY) | assert_setattr(self, "entity_type"), ), OptionalField( "entity_id", assert_str() | assert_setattr(self, "entity_id"), ), )(dump) else: assert_str()(dump) assert_setattr(self, "entity_id")(dump)
[docs] @override def dump(self) -> VoidableDump: if self.entity_type_is_constrained: return void_none(self.entity_id) if self.entity_type is None or self.entity_id is None: return Void dump: VoidableDumpMapping[VoidableDump] = { "entity_type": ( self._entity_type.plugin_id() if self._entity_type else Void ), "entity_id": self._entity_id, } return minimize(dump)
@override def __eq__(self, other: Any) -> bool: if not isinstance(other, EntityReference): return NotImplemented return ( self.entity_type == other.entity_type and self.entity_id == other.entity_id )
[docs] @final class EntityReferenceSequence( Generic[_EntityT], ConfigurationSequence[EntityReference[_EntityT]] ): """ Configuration for a sequence of references to entities from the project's ancestry. """
[docs] def __init__( self, entity_references: Iterable[EntityReference[_EntityT]] | None = None, *, entity_type_constraint: type[_EntityT] | None = None, ): self._entity_type_constraint = entity_type_constraint super().__init__(entity_references)
[docs] @override def load_item(self, dump: Dump) -> EntityReference[_EntityT]: configuration = EntityReference[_EntityT]( # Use a dummy entity type for now to satisfy the initializer. # It will be overridden when loading the dump. Entity # type: ignore[arg-type] if self._entity_type_constraint is None else self._entity_type_constraint, entity_type_is_constrained=self._entity_type_constraint is not None, ) configuration.load(dump) return configuration
@override def _pre_add(self, configuration: EntityReference[_EntityT]) -> None: super()._pre_add(configuration) entity_type_constraint = self._entity_type_constraint entity_reference_entity_type = configuration._entity_type if entity_type_constraint is None: configuration._entity_type_is_constrained = False return configuration._entity_type_is_constrained = True if ( entity_reference_entity_type == entity_type_constraint and configuration.entity_type_is_constrained ): return expected_entity_type_label = entity_type_constraint.plugin_label() if entity_reference_entity_type is None: raise AssertionFailed( _( "The entity reference must be for an entity of type {expected_entity_type_label}, but instead does not specify an entity type at all." ).format( expected_entity_type_label=expected_entity_type_label, ) ) actual_entity_type_label = entity_type_constraint.plugin_label() raise AssertionFailed( _( "The entity reference must be for an entity of type {expected_entity_type_label}, but instead is for an entity of type {actual_entity_type_label}." ).format( expected_entity_type_label=expected_entity_type_label, actual_entity_type_label=actual_entity_type_label, ) )
[docs] @final class ExtensionConfiguration(Configuration): """ Configure a single extension for a project. """
[docs] def __init__( self, extension_type: type[Extension], *, enabled: bool = True, extension_configuration: Configuration | None = None, ): super().__init__() self._extension_type = extension_type self._enabled = enabled if extension_configuration is None and issubclass( extension_type, ConfigurableExtension ): extension_configuration = extension_type.default_configuration() self._set_extension_configuration(extension_configuration)
@override def __eq__(self, other: Any) -> bool: if not isinstance(other, self.__class__): return NotImplemented if self.extension_type != other.extension_type: return False if self.enabled != other.enabled: return False if self.extension_configuration != other.extension_configuration: return False return True @property def extension_type(self) -> type[Extension]: """ The extension type. """ return self._extension_type @property def enabled(self) -> bool: """ Whether the extension is enabled. """ return self._enabled @enabled.setter def enabled(self, enabled: bool) -> None: self._enabled = enabled @property def extension_configuration(self) -> Configuration | None: """ Get the extension's own configuration. """ return self._extension_configuration def _set_extension_configuration( self, extension_configuration: Configuration | None ) -> None: self._extension_configuration = extension_configuration
[docs] @override def update(self, other: Self) -> None: self._extension_type = other._extension_type self._enabled = other._enabled self._set_extension_configuration(other._extension_configuration)
[docs] @override def load(self, dump: Dump) -> None: assert_record( RequiredField( "extension", assert_plugin(extension.EXTENSION_REPOSITORY) | assert_setattr(self, "_extension_type"), ), OptionalField("enabled", assert_bool() | assert_setattr(self, "enabled")), OptionalField( "configuration", self._assert_load_extension_configuration(self.extension_type), ), )(dump)
def _assert_load_extension_configuration( self, extension_type: type[Extension] ) -> Assertion[Any, Configuration]: def _assertion(value: Any) -> Configuration: extension_configuration = self._extension_configuration if isinstance(extension_configuration, Configuration): extension_configuration.load(value) return extension_configuration raise AssertionFailed( _("{extension_type} is not configurable.").format( extension_type=extension_type.plugin_id() ) ) return _assertion
[docs] @override def dump(self) -> VoidableDump: return minimize( { "extension": self.extension_type.plugin_id(), "enabled": self.enabled, "configuration": ( minimize(self.extension_configuration.dump()) if issubclass(self.extension_type, Configurable) and self.extension_configuration else Void ), } )
[docs] @final class ExtensionConfigurationMapping( ConfigurationMapping[type[Extension], ExtensionConfiguration] ): """ Configure a project's extensions. """ @override def _minimize_item_dump(self) -> bool: return True
[docs] def __init__( self, configurations: Iterable[ExtensionConfiguration] | None = None, ): super().__init__(configurations)
[docs] @override def load_item(self, dump: Dump) -> ExtensionConfiguration: dict_dump = assert_fields( RequiredField("extension", assert_plugin(extension.EXTENSION_REPOSITORY)) )(dump) configuration = ExtensionConfiguration(dict_dump["extension"]) configuration.load(dump) return configuration
@override def _get_key(self, configuration: ExtensionConfiguration) -> type[Extension]: return configuration.extension_type @override def _load_key( self, item_dump: Dump, key_dump: str, ) -> Dump: dict_dump = assert_dict()(item_dump) dict_dump["extension"] = key_dump return dict_dump @override def _dump_key(self, item_dump: VoidableDump) -> tuple[VoidableDump, str]: dict_dump = assert_dict()(item_dump) return dict_dump, dict_dump.pop("extension")
[docs] def enable(self, *extension_types: type[Extension]) -> None: """ Enable the given extensions. """ for extension_type in extension_types: try: self._configurations[extension_type].enabled = True except KeyError: self.append(ExtensionConfiguration(extension_type))
[docs] def disable(self, *extension_types: type[Extension]) -> None: """ Disable the given extensions. """ for extension_type in extension_types: with suppress(KeyError): self._configurations[extension_type].enabled = False
[docs] @final class EntityTypeConfiguration(Configuration): """ Configure a single entity type for a project. """
[docs] def __init__( self, entity_type: type[Entity], *, generate_html_list: bool | None = None, ): super().__init__() self._entity_type = entity_type self.generate_html_list = generate_html_list # type: ignore[assignment]
@override def __eq__(self, other: Any) -> bool: if not isinstance(other, self.__class__): return NotImplemented if self.entity_type != other.entity_type: return False if self.generate_html_list != other.generate_html_list: return False return True @property def entity_type(self) -> type[Entity]: """ The configured entity type. """ return self._entity_type @property def generate_html_list(self) -> bool: """ Whether to generate listing web pages for entities of this type. """ return self._generate_html_list or False @generate_html_list.setter def generate_html_list(self, generate_html_list: bool | None) -> None: if generate_html_list and not issubclass(self._entity_type, UserFacingEntity): raise AssertionFailed( _( "Cannot generate pages for {entity_type}, because it is not a user-facing entity type." ).format(entity_type=self._entity_type.plugin_label()) ) self._generate_html_list = generate_html_list
[docs] @override def update(self, other: Self) -> None: self._entity_type = other._entity_type self._generate_html_list = other._generate_html_list
[docs] @override def load(self, dump: Dump) -> None: assert_record( RequiredField[Any, type[Entity]]( "entity_type", assert_str() | assert_plugin(model.ENTITY_TYPE_REPOSITORY) | assert_setattr(self, "_entity_type"), ), OptionalField( "generate_html_list", assert_bool() | assert_setattr(self, "generate_html_list"), ), )(dump)
[docs] @override def dump(self) -> VoidableDump: dump: VoidableDumpMapping[VoidableDump] = { "entity_type": self._entity_type.plugin_id(), "generate_html_list": ( Void if self._generate_html_list is None else self._generate_html_list ), } return minimize(dump)
[docs] @final class EntityTypeConfigurationMapping( ConfigurationMapping[type[Entity], EntityTypeConfiguration] ): """ Configure the entity types for a project. """ @override def _minimize_item_dump(self) -> bool: return True @override def _get_key(self, configuration: EntityTypeConfiguration) -> type[Entity]: return configuration.entity_type @override def _load_key( self, item_dump: Dump, key_dump: str, ) -> Dump: dict_dump = assert_dict()(item_dump) assert_plugin(model.ENTITY_TYPE_REPOSITORY)(key_dump) dict_dump["entity_type"] = key_dump return dict_dump @override def _dump_key(self, item_dump: VoidableDump) -> tuple[VoidableDump, str]: dict_dump = assert_dict()(item_dump) return dict_dump, dict_dump.pop("entity_type")
[docs] @override def load_item(self, dump: Dump) -> EntityTypeConfiguration: # Use a dummy entity type for now to satisfy the initializer. # It will be overridden when loading the dump. configuration = EntityTypeConfiguration( Entity # type: ignore[type-abstract] ) configuration.load(dump) return configuration
[docs] @final class LocaleConfiguration(Configuration): """ Configure a single project locale. """
[docs] def __init__( self, locale: str, *, alias: str | None = None, ): super().__init__() self._locale = locale if alias is not None and "/" in alias: raise AssertionFailed(_("Locale aliases must not contain slashes.")) self._alias = alias
@override # type: ignore[callable-functiontype] @recursive_repr() def __repr__(self) -> str: return repr_instance(self, locale=self.locale, alias=self.alias) @override def __eq__(self, other: Any) -> bool: if not isinstance(other, self.__class__): return NotImplemented if self.locale != other.locale: return False if self.alias != other.alias: return False return True @override def __hash__(self) -> int: return hash((self._locale, self._alias)) @property def locale(self) -> str: """ An `IETF BCP 47 <https://tools.ietf.org/html/bcp47>`_ language tag. """ return self._locale @property def alias(self) -> str: """ A shorthand alias to use instead of the full language tag, such as when rendering URLs. """ if self._alias is None: return self.locale return self._alias @alias.setter def alias(self, alias: str | None) -> None: self._alias = alias
[docs] @override def update(self, other: Self) -> None: self._locale = other._locale self._alias = other._alias
[docs] @override def load(self, dump: Dump) -> None: assert_record( RequiredField("locale", assert_locale() | assert_setattr(self, "_locale")), OptionalField("alias", assert_str() | assert_setattr(self, "alias")), )(dump)
[docs] @override def dump(self) -> VoidableDump: return minimize({"locale": self.locale, "alias": void_none(self._alias)})
[docs] @final class LocaleConfigurationSequence(ConfigurationSequence[LocaleConfiguration]): """ Configure a project's locales. """
[docs] def __init__( self, configurations: Iterable[LocaleConfiguration] | None = None, ): super().__init__(configurations) self._ensure_locale()
@override @overload def __getitem__(self, configuration_key: int | str) -> LocaleConfiguration: pass # pragma: no cover @override @overload def __getitem__(self, configuration_key: slice) -> Sequence[LocaleConfiguration]: pass # pragma: no cover @override def __getitem__( self, configuration_key: int | slice | str ) -> LocaleConfiguration | Sequence[LocaleConfiguration]: if isinstance(configuration_key, str): for configuration in self: if configuration.locale == configuration_key: return configuration raise KeyError return self._configurations[configuration_key] def __delitem__(self, configuration_key: int | str) -> None: if isinstance(configuration_key, str): for index, configuration in enumerate(self): if configuration.locale == configuration_key: self.remove(index) return raise KeyError self.remove(configuration_key) @override def _pre_add(self, configuration: LocaleConfiguration) -> None: try: self[configuration.locale] except KeyError: pass else: raise ValueError(f'Cannot add locale "{configuration.locale}" twice.') @override def _post_remove(self, configuration: LocaleConfiguration) -> None: super()._post_remove(configuration) self._ensure_locale() def _ensure_locale(self) -> None: if len(self) == 0: self.append(LocaleConfiguration(DEFAULT_LOCALE))
[docs] @override def update(self, other: Self) -> None: # Prevent the events from being dispatched. self._configurations.clear() self.append(*other)
[docs] @override def replace(self, *configurations: LocaleConfiguration) -> None: # Prevent the events from being dispatched. self._configurations.clear() self.append(*configurations) self._ensure_locale()
[docs] @override def load_item(self, dump: Dump) -> LocaleConfiguration: item = LocaleConfiguration("und") item.load(dump) return item
@property def default(self) -> LocaleConfiguration: """ The default language. """ return self._configurations[0] @property def multilingual(self) -> bool: """ Whether the configuration is multilingual. """ return len(self) > 1
[docs] @final class ProjectConfiguration(Configuration): """ Provide the configuration for a :py:class:`betty.project.Project`. """ title = StaticTranslationsLocalizableConfigurationProperty("title") author = StaticTranslationsLocalizableConfigurationProperty("author", minimum=0)
[docs] def __init__( self, configuration_file_path: Path, *, url: str = "https://example.com", clean_urls: bool = False, title: ShorthandStaticTranslations = "Betty", author: ShorthandStaticTranslations | None = None, entity_types: Iterable[EntityTypeConfiguration] | None = None, extensions: Iterable[ExtensionConfiguration] | None = None, debug: bool = False, locales: Iterable[LocaleConfiguration] | None = None, lifetime_threshold: int = DEFAULT_LIFETIME_THRESHOLD, name: str | None = None, ): super().__init__() self._configuration_file_path = configuration_file_path self._name = name self._computed_name: str | None = None self._url = url self._clean_urls = clean_urls self.title = title if author: self.author = author self._entity_types = EntityTypeConfigurationMapping( entity_types or [ EntityTypeConfiguration( entity_type=Person, generate_html_list=True, ), EntityTypeConfiguration( entity_type=Event, generate_html_list=True, ), EntityTypeConfiguration( entity_type=Place, generate_html_list=True, ), EntityTypeConfiguration( entity_type=Source, generate_html_list=True, ), ] ) self._extensions = ExtensionConfigurationMapping(extensions or ()) self._debug = debug self._locales = LocaleConfigurationSequence(locales or ()) self._lifetime_threshold = lifetime_threshold
@property def configuration_file_path(self) -> Path: """ The path to the configuration's file. """ return self._configuration_file_path @configuration_file_path.setter def configuration_file_path(self, configuration_file_path: Path) -> None: if configuration_file_path == self._configuration_file_path: return formats = FormatRepository() formats.format_for(configuration_file_path.suffix[1:]) self._configuration_file_path = configuration_file_path @property def name(self) -> str | None: """ The project's machine name. """ return self._name @name.setter def name(self, name: str) -> None: self._name = name @property def project_directory_path(self) -> Path: """ The project directory path. Betty will look for resources in this directory, and place generated artifacts there. It is expected that no other applications or projects share this same directory. """ return self.configuration_file_path.parent @property def output_directory_path(self) -> Path: """ The output directory path. """ return self.project_directory_path / "output" @property def assets_directory_path(self) -> Path: """ The :doc:`assets directory path </usage/assets>`. """ return self.project_directory_path / "assets" @property def www_directory_path(self) -> Path: """ The WWW directory path. """ return self.output_directory_path / "www"
[docs] def localize_www_directory_path(self, locale: str) -> Path: """ Get the WWW directory path for a locale. """ if self.locales.multilingual: return self.www_directory_path / self.locales[locale].alias return self.www_directory_path
@property def url(self) -> str: """ The project's public URL. """ return self._url @url.setter def url(self, url: str) -> None: url_parts = urlparse(url) if not url_parts.scheme: raise AssertionFailed( _("The URL must start with a scheme such as https:// or http://.") ) if not url_parts.netloc: raise AssertionFailed(_("The URL must include a host.")) self._url = f"{url_parts.scheme}://{url_parts.netloc}{url_parts.path}" @property def base_url(self) -> str: """ The project's public URL's base URL. If the public URL is ``https://example.com``, the base URL is ``https://example.com``. If the public URL is ``https://example.com/my-ancestry-site``, the base URL is ``https://example.com``. If the public URL is ``https://my-ancestry-site.example.com``, the base URL is ``https://my-ancestry-site.example.com``. """ url_parts = urlparse(self.url) return f"{url_parts.scheme}://{url_parts.netloc}" @property def root_path(self) -> str: """ The project's public URL's root path. If the public URL is ``https://example.com``, the root path is an empty string. If the public URL is ``https://example.com/my-ancestry-site``, the root path is ``/my-ancestry-site``. """ return urlparse(self.url).path @property def clean_urls(self) -> bool: """ Whether to generate clean URLs such as ``/person/first-person`` instead of ``/person/first-person/index.html``. Generated artifacts will require web server that supports this. """ return self._clean_urls @clean_urls.setter def clean_urls(self, clean_urls: bool) -> None: self._clean_urls = clean_urls @property def locales(self) -> LocaleConfigurationSequence: """ The available locales. """ return self._locales @property def entity_types(self) -> EntityTypeConfigurationMapping: """ The available entity types. """ return self._entity_types @property def extensions(self) -> ExtensionConfigurationMapping: """ Then extensions running within this application. """ return self._extensions @property def debug(self) -> bool: """ Whether to enable debugging for project jobs. This setting is disabled by default. Enabling this generally results in: - More verbose logging output - job artifacts (e.g. generated sites) """ return self._debug @debug.setter def debug(self, debug: bool) -> None: self._debug = debug @property def lifetime_threshold(self) -> int: """ The lifetime threshold indicates when people are considered dead. This setting defaults to :py:const:`betty.project.DEFAULT_LIFETIME_THRESHOLD`. The value is an integer expressing the age in years over which people are presumed to have died. """ return self._lifetime_threshold @lifetime_threshold.setter def lifetime_threshold(self, lifetime_threshold: int) -> None: assert_positive_number()(lifetime_threshold) self._lifetime_threshold = lifetime_threshold
[docs] @override def update(self, other: Self) -> None: self._url = other._url self.title.update(other.author) self.author.update(other.author) self._clean_urls = other._clean_urls self._debug = other._debug self._lifetime_threshold = other._lifetime_threshold self._locales.update(other._locales) self._extensions.update(other._extensions) self._entity_types.update(other._entity_types)
[docs] @override def load(self, dump: Dump) -> None: assert_record( OptionalField("name", assert_str() | assert_setattr(self, "name")), RequiredField("url", assert_str() | assert_setattr(self, "url")), OptionalField("title", self.title.load), OptionalField("author", self.author.load), OptionalField( "clean_urls", assert_bool() | assert_setattr(self, "clean_urls"), ), OptionalField("debug", assert_bool() | assert_setattr(self, "debug")), OptionalField( "lifetime_threshold", assert_int() | assert_setattr(self, "lifetime_threshold"), ), OptionalField("locales", self.locales.load), OptionalField("extensions", self.extensions.load), OptionalField("entity_types", self.entity_types.load), )(dump)
[docs] @override def dump(self) -> VoidableDumpMapping[Dump]: return minimize( { # type: ignore[return-value] "name": void_none(self.name), "url": self.url, "title": self.title.dump(), "clean_urls": void_none(self.clean_urls), "author": self.author.dump(), "debug": void_none(self.debug), "lifetime_threshold": void_none(self.lifetime_threshold), "locales": self.locales.dump(), "extensions": self.extensions.dump(), "entity_types": self.entity_types.dump(), }, True, )
[docs] @final class Project(Configurable[ProjectConfiguration], CoreComponent): """ Define a Betty project. A project combines project configuration and the resulting ancestry. """
[docs] def __init__( self, app: App, configuration: ProjectConfiguration, *, ancestry: Ancestry | None = None, ): super().__init__() self._app = app self._configuration = configuration self._ancestry = Ancestry() if ancestry is None else ancestry self._assets: AssetRepository | None = None self._localizers: LocalizerRepository | None = None self._url_generator: LocalizedUrlGenerator | None = None self._static_url_generator: StaticUrlGenerator | None = None self._jinja2_environment: Environment | None = None self._renderer: Renderer | None = None self._extensions: _ProjectExtensions | None = None self._event_dispatcher: EventDispatcher | None = None self._entity_types: set[type[Entity]] | None = None
[docs] @classmethod @asynccontextmanager async def new_temporary( cls, app: App, *, ancestry: Ancestry | None = None ) -> AsyncIterator[Self]: """ Creat a new, temporary, isolated project. The project will not leave any traces on the system, except when it uses global Betty functionality such as caches. """ async with ( TemporaryDirectory() as project_directory_path_str, ): yield cls( app, ProjectConfiguration(Path(project_directory_path_str) / "betty.json"), ancestry=ancestry, )
[docs] @override async def bootstrap(self) -> None: await super().bootstrap() for project_extension_batch in self.extensions: batch_event_handlers = EventHandlerRegistry() for project_extension in project_extension_batch: await self._async_exit_stack.enter_async_context(project_extension) project_extension.register_event_handlers(batch_event_handlers) self.event_dispatcher.add_registry(batch_event_handlers)
@property def app(self) -> App: """ The application this project is run within. """ return self._app @property def name(self) -> str: """ The project name. If no project name was configured, this defaults to the hash of the configuration file path. """ if self._configuration.name is None: return hashid(str(self._configuration.configuration_file_path)) return self._configuration.name @property def ancestry(self) -> Ancestry: """ The project's ancestry. """ return self._ancestry @property def assets(self) -> AssetRepository: """ The assets file system. """ if self._assets is None: self._assert_bootstrapped() asset_paths = [self.configuration.assets_directory_path] for extension in self.extensions.flatten(): extension_assets_directory_path = extension.assets_directory_path() if extension_assets_directory_path is not None: asset_paths.append(extension_assets_directory_path) # Mimic :py:attr:`betty.app.App.assets`. asset_paths.append(fs.ASSETS_DIRECTORY_PATH) self._assets = AssetRepository(*asset_paths) return self._assets @property def localizers(self) -> LocalizerRepository: """ The available localizers. """ if self._localizers is None: self._assert_bootstrapped() self._localizers = LocalizerRepository(self.assets) return self._localizers @property def url_generator(self) -> LocalizedUrlGenerator: """ The (localized) URL generator. """ if self._url_generator is None: from betty.url import ProjectUrlGenerator self._assert_bootstrapped() self._url_generator = ProjectUrlGenerator(self) return self._url_generator @property def static_url_generator(self) -> StaticUrlGenerator: """ The static URL generator. """ if self._static_url_generator is None: from betty.url import StaticPathUrlGenerator self._assert_bootstrapped() self._static_url_generator = StaticPathUrlGenerator(self.configuration) return self._static_url_generator @property def jinja2_environment(self) -> Environment: """ The Jinja2 environment. """ if not self._jinja2_environment: from betty.jinja2 import Environment self._assert_bootstrapped() self._jinja2_environment = Environment(self) return self._jinja2_environment @property def renderer(self) -> Renderer: """ The (file) content renderer. """ if not self._renderer: from betty.jinja2 import Jinja2Renderer self._renderer = SequentialRenderer( [ Jinja2Renderer(self.jinja2_environment, self.configuration), ] ) return self._renderer @property def extensions(self) -> _ProjectExtensions: """ The enabled extensions. """ if self._extensions is None: self._assert_bootstrapped() extension_types_enabled_in_configuration = set() for ( project_extension_configuration ) in self.configuration.extensions.values(): if project_extension_configuration.enabled: wait_to_thread( project_extension_configuration.extension_type.enable_requirement().assert_met() ) extension_types_enabled_in_configuration.add( project_extension_configuration.extension_type ) extension_types_sorter = TopologicalSorter( wait_to_thread( build_extension_type_graph(extension_types_enabled_in_configuration) ) ) try: extension_types_sorter.prepare() except CycleError: raise CyclicDependencyError( [ app_extension_configuration.extension_type for app_extension_configuration in self.configuration.extensions.values() ] ) from None extensions = [] while extension_types_sorter.is_active(): extension_types_batch = extension_types_sorter.get_ready() extensions_batch = [] for extension_type in extension_types_batch: extension = self.new_dependent(extension_type) if ( isinstance(extension, ConfigurableExtension) and extension_type in self.configuration.extensions ): extension.configuration.update( self.configuration.extensions[ extension_type ].extension_configuration ) extensions_batch.append(extension) extension_types_sorter.done(extension_type) extensions.append( sorted( extensions_batch, key=lambda extension: extension.plugin_id() ) ) self._extensions = _ProjectExtensions(extensions) return self._extensions @property def event_dispatcher(self) -> EventDispatcher: """ The event dispatcher. """ if self._event_dispatcher is None: self._assert_bootstrapped() self._event_dispatcher = EventDispatcher() return self._event_dispatcher
[docs] def new_dependent( self, dependent: type[_ProjectDependentFactoryT] ) -> _ProjectDependentFactoryT: """ Create a new instance of a type that depends on a ``self``. """ return dependent.new_for_project(self)
_ProjectDependentFactoryT = TypeVar( "_ProjectDependentFactoryT", bound=ProjectDependentFactory ) @final class _ProjectExtensions: """ Manage the extensions running within the :py:class:`betty.project.Project`. """ def __init__(self, project_extensions: Sequence[Sequence[Extension]]): super().__init__() self._project_extensions = project_extensions def __getitem__(self, extension_id: MachineName) -> Extension: extension_type = wait_to_thread( extension.EXTENSION_REPOSITORY.get(extension_id) ) for project_extension in self.flatten(): if type(project_extension) is extension_type: return project_extension raise KeyError(f'Unknown extension of type "{extension_type}"') def __iter__(self) -> Iterator[Iterator[Extension]]: """ Iterate over all extensions, in topologically sorted batches. Each item is a batch of extensions. Items are ordered because later items depend on earlier items. The extensions in each item do not depend on each other and their order has no meaning. However, implementations SHOULD sort the extensions in each item in a stable fashion for reproducability. """ # Use a generator so we discourage calling code from storing the result. for batch in self._project_extensions: yield (project_extension for project_extension in batch) def flatten(self) -> Iterator[Extension]: """ Get a sequence of topologically sorted extensions. """ for batch in self: yield from batch def __contains__(self, extension_id: MachineName) -> bool: try: self[extension_id] except KeyError: return False else: return True
[docs] class ProjectEvent(event_dispatcher.Event): """ An event that is dispatched within the context of a :py:class:`betty.project.Project`. """
[docs] def __init__(self, project: Project): self._project = project
@property def project(self) -> Project: """ The :py:class:`betty.project.Project` this event is dispatched within. """ return self._project