def _download_promtail()

in subcommands/install.py [0:0]

• 21 lines of code
• 2 McCabe index (conditional complexity)

def _download_promtail(output_dir):
    with open(os.path.abspath("./promtail/VERSION"), "r") as f:
        promtail_version = f.readlines()[0].strip()

    output_dir = os.path.join(output_dir, "promtail")
    output_zip = os.path.join(output_dir, "promtail.zip")

    response = requests.get(
        "https://github.com/grafana/loki/releases/download/v%s/promtail-linux-amd64.zip"
        % promtail_version,
        stream=True,
    )
    with open(output_zip, "wb") as f:
        for chunk in response.iter_content(chunk_size=512):
            f.write(chunk)

    with zipfile.ZipFile(output_zip) as f:
        f.extractall(output_dir)

    promtail_exe = os.path.join(output_dir, "promtail-linux-amd64")
    os.chmod(
        promtail_exe,
        os.stat(promtail_exe).st_mode | stat.S_IEXEC | stat.S_IXGRP | stat.S_IXOTH,
    )
    os.remove(output_zip)