build.py 文件源码

def _build_downloader(target_directory):
    """Build the downloader Lambda deployment package."""
    print('Creating downloader deploy package...')
    pathlib.Path(DOWNLOAD_SOURCE).touch()

    temp_package_dir = os.path.join(tempfile.gettempdir(), 'tmp_yara_downloader.pkg')
    if os.path.exists(temp_package_dir):
        shutil.rmtree(temp_package_dir)

    # Extract cbapi library.
    with zipfile.ZipFile(DOWNLOAD_DEPENDENCIES, 'r') as deps:
        deps.extractall(temp_package_dir)

    # Pip install backoff library (has no native dependencies).
    pip.main(['install', '--quiet', '--target', temp_package_dir, 'backoff'])

    # Copy Lambda code into the package.
    shutil.copy(DOWNLOAD_SOURCE, temp_package_dir)

    # Zip up the package and remove temporary directory.
    shutil.make_archive(os.path.join(target_directory, DOWNLOAD_ZIPFILE), 'zip', temp_package_dir)
    shutil.rmtree(temp_package_dir)