fabfile.py 文件源码

def deploy():
    """ Deploy application with packaging in mind """
    version = get_version()
    pip_path = os.path.join(
        REMOTE_PROJECT_LOCATION, version, 'bin', 'pip'
    )

    prepare_release()

    if not exists(REMOTE_PROJECT_LOCATION):
        # it may not exist for initial deployment on fresh host
        run("mkdir -p {}".format(REMOTE_PROJECT_LOCATION))

    with cd(REMOTE_PROJECT_LOCATION):
        # create new virtual environment using venv
        run('python3 -m venv {}'.format(version))

        run("{} install webxample=={} --index-url {}".format(
            pip_path, version, PYPI_URL
        ))

    switch_versions(version)
    # let's assume that Circus is our process supervision tool
    # of choice.
    run('circusctl restart webxample')