DataDownloaderSelector

QuantConnect.Lean.Engine.DataFeeds.DataDownloader.DataDownloaderSelector

DataDownloaderSelector(
    base_data_downloader: IDataDownloader,
    map_file_provider: IMapFileProvider,
    data_provider: IDataProvider,
    factor_file_provider: IFactorFileProvider = None,
)

Bases: Object, IDisposable

Selects the appropriate data downloader based on the data type.

Initializes a new instance of the DataDownloaderSelector class.

Parameters:

Name	Type	Description	Default
`base_data_downloader`	`IDataDownloader`	The base data downloader instance.	required
`map_file_provider`	`IMapFileProvider`	The map file provider used for initializing chain providers.	required
`data_provider`	`IDataProvider`	The data provider used for initializing chain providers.	required
`factor_file_provider`	`IFactorFileProvider`	The factor file provider used for initializing chain providers.	`None`

dispose

dispose() -> None

Disposes the base downloader and the decorator if it was initialized.

get_data_downloader

get_data_downloader(data_type: Type) -> IDataDownloader

Returns the appropriate downloader for the given data type.

Parameters:

Name	Type	Description	Default
`data_type`	`Type`	The type of data to download.	required

Returns:

Type	Description
`IDataDownloader`	The base downloader for common lean data types, otherwise the canonical decorator.