b2sdk.transfer.inbound.downloader.abstract – Downloader base class

class b2sdk.transfer.inbound.downloader.abstract.EmptyHasher(*args, **kwargs)

Bases: object

__init__(*args, **kwargs)

update(data)

digest()

hexdigest()

copy()

class b2sdk.transfer.inbound.downloader.abstract.AbstractDownloader(thread_pool=None, force_chunk_size=None, min_chunk_size=None, max_chunk_size=None, align_factor=None, check_hash=True, **kwargs)

Bases: object

Parameters:

• thread_pool (Optional[ThreadPoolExecutor]) –

• force_chunk_size (Optional[int]) –

• min_chunk_size (Optional[int]) –

• max_chunk_size (Optional[int]) –

• align_factor (Optional[int]) –

• check_hash (bool) –

REQUIRES_SEEKING = True

DEFAULT_THREAD_POOL_CLASS

alias of ThreadPoolExecutor

DEFAULT_ALIGN_FACTOR = 4096

__init__(thread_pool=None, force_chunk_size=None, min_chunk_size=None, max_chunk_size=None, align_factor=None, check_hash=True, **kwargs)

Parameters:

• thread_pool (Optional[ThreadPoolExecutor]) –

• force_chunk_size (Optional[int]) –

• min_chunk_size (Optional[int]) –

• max_chunk_size (Optional[int]) –

• align_factor (Optional[int]) –

• check_hash (bool) –

is_suitable(download_version, allow_seeking)

Analyze download_version (possibly against options passed earlier to constructor to find out whether the given download request should be handled by this downloader).

Parameters:

• download_version (DownloadVersion) –

• allow_seeking (bool) –

abstract download(file, response, download_version, session, encryption=None)

@returns (bytes_read, actual_sha1)

Parameters:

• file (IOBase) –

• response (Response) –

• download_version (DownloadVersion) –

• session (B2Session) –

• encryption (Optional[EncryptionSetting]) –