Python models.CONTENT_CHUNK_SIZE属性代码示例

# 需要导入模块: from pip._vendor.requests import models [as 别名]
# 或者: from pip._vendor.requests.models import CONTENT_CHUNK_SIZE [as 别名]
def response_chunks(response, chunk_size=CONTENT_CHUNK_SIZE):
    # type: (Response, int) -> Iterator[bytes]
    """Given a requests Response, provide the data chunks.
    """
    try:
        # Special case for urllib3.
        for chunk in response.raw.stream(
            chunk_size,
            # We use decode_content=False here because we don't
            # want urllib3 to mess with the raw bytes we get
            # from the server. If we decompress inside of
            # urllib3 then we cannot verify the checksum
            # because the checksum will be of the compressed
            # file. This breakage will only occur if the
            # server adds a Content-Encoding header, which
            # depends on how the server was configured:
            # - Some servers will notice that the file isn't a
            #   compressible file and will leave the file alone
            #   and with an empty Content-Encoding
            # - Some servers will notice that the file is
            #   already compressed and will leave the file
            #   alone and will add a Content-Encoding: gzip
            #   header
            # - Some servers won't notice anything at all and
            #   will take a file that's already been compressed
            #   and compress it again and set the
            #   Content-Encoding: gzip header
            #
            # By setting this not to decode automatically we
            # hope to eliminate problems with the second case.
            decode_content=False,
        ):
            yield chunk
    except AttributeError:
        # Standard file-like object.
        while True:
            chunk = response.raw.read(chunk_size)
            if not chunk:
                break
            yield chunk 

# 需要导入模块: from pip._vendor.requests import models [as 别名]
# 或者: from pip._vendor.requests.models import CONTENT_CHUNK_SIZE [as 别名]
def _prepare_download(
    resp,  # type: Response
    link,  # type: Link
    progress_bar  # type: str
):
    # type: (...) -> Iterable[bytes]
    total_length = _get_http_response_size(resp)

    if link.netloc == PyPI.file_storage_domain:
        url = link.show_url
    else:
        url = link.url_without_fragment

    logged_url = redact_auth_from_url(url)

    if total_length:
        logged_url = '{} ({})'.format(logged_url, format_size(total_length))

    if is_from_cache(resp):
        logger.info("Using cached %s", logged_url)
    else:
        logger.info("Downloading %s", logged_url)

    if logger.getEffectiveLevel() > logging.INFO:
        show_progress = False
    elif is_from_cache(resp):
        show_progress = False
    elif not total_length:
        show_progress = True
    elif total_length > (40 * 1000):
        show_progress = True
    else:
        show_progress = False

    chunks = response_chunks(resp, CONTENT_CHUNK_SIZE)

    if not show_progress:
        return chunks

    return DownloadProgressProvider(
        progress_bar, max=total_length
    )(chunks)