Simplify the BaseTilerFactory

[vincentsarago]

titiler/src/titiler/core/titiler/core/factory.py

Lines 123 to 197 in 77816bf

	# ref: https://github.com/python/mypy/issues/5374
	@dataclass # type: ignore
	class BaseTilerFactory(metaclass=abc.ABCMeta):
	"""BaseTiler Factory.
	Abstract Base Class which defines most inputs used by dynamic tiler.
	Attributes:
	reader (rio_tiler.io.base.BaseReader): A rio-tiler reader (e.g Reader).
	router (fastapi.APIRouter): Application router to register endpoints to.
	path_dependency (Callable): Endpoint dependency defining `path` to pass to the reader init.
	dataset_dependency (titiler.core.dependencies.DefaultDependency): Endpoint dependency defining dataset overwriting options (e.g nodata).
	layer_dependency (titiler.core.dependencies.DefaultDependency): Endpoint dependency defining dataset indexes/bands/assets options.
	render_dependency (titiler.core.dependencies.DefaultDependency): Endpoint dependency defining image rendering options (e.g add_mask).
	colormap_dependency (Callable): Endpoint dependency defining ColorMap options (e.g colormap_name).
	process_dependency (titiler.core.dependencies.DefaultDependency): Endpoint dependency defining image post-processing options (e.g rescaling, color-formula).
	tms_dependency (Callable): Endpoint dependency defining TileMatrixSet to use.
	reader_dependency (titiler.core.dependencies.DefaultDependency): Endpoint dependency defining BaseReader options.
	environment_dependency (Callable): Endpoint dependency to define GDAL environment at runtime.
	router_prefix (str): prefix where the router will be mounted in the application.
	optional_headers(sequence of titiler.core.resources.enums.OptionalHeader): additional headers to return with the response.
	"""
	reader: Type[BaseReader]
	# FastAPI router
	router: APIRouter = field(default_factory=APIRouter)
	# Path Dependency
	path_dependency: Callable[..., Any] = DatasetPathParams
	# Indexes/Expression Dependencies
	layer_dependency: Type[DefaultDependency] = BidxExprParams
	# Rasterio Dataset Options (nodata, unscale, resampling, reproject)
	dataset_dependency: Type[DefaultDependency] = DatasetParams
	# Post Processing Dependencies (algorithm)
	process_dependency: Callable[
	..., Optional[BaseAlgorithm]
	] = available_algorithms.dependency
	# Image rendering Dependencies
	rescale_dependency: Callable[..., Optional[RescaleType]] = RescalingParams
	color_formula_dependency: Callable[..., Optional[str]] = ColorFormulaParams
	colormap_dependency: Callable[..., Optional[ColorMapType]] = ColorMapParams
	render_dependency: Type[DefaultDependency] = ImageRenderingParams
	# Reader dependency
	reader_dependency: Type[DefaultDependency] = DefaultDependency
	# GDAL ENV dependency
	environment_dependency: Callable[..., Dict] = field(default=lambda: {})
	# TileMatrixSet dependency
	supported_tms: TileMatrixSets = morecantile_tms
	default_tms: Optional[str] = None
	# Router Prefix is needed to find the path for /tile if the TilerFactory.router is mounted
	# with other router (multiple `.../tile` routes).
	# e.g if you mount the route with `/cog` prefix, set router_prefix to cog and
	router_prefix: str = ""
	# add additional headers in response
	optional_headers: List[OptionalHeader] = field(default_factory=list)
	# add dependencies to specific routes
	route_dependencies: List[Tuple[List[EndpointScope], List[DependsFunc]]] = field(
	default_factory=list
	)
	extensions: List[FactoryExtension] = field(default_factory=list)
	templates: Jinja2Templates = DEFAULT_TEMPLATES

The BaseTilerFactory has many attributes that are not use or might not be used by other Factories so we should defer the definition of those attribute to the children not in the base class