web_server.py 文件源码

def shakemap_overlay(shakemap_id):
    session = Session()
    shakemap = (session.query(ShakeMap)
                    .filter(ShakeMap.shakemap_id == shakemap_id)
                    .order_by(desc(ShakeMap.shakemap_version))
                    .limit(1)).first()
    if shakemap is not None:
        img = os.path.join(app.config['EARTHQUAKES'],
                           shakemap_id,
                           shakemap_id + '-' + str(shakemap.shakemap_version),
                           'ii_overlay.png')

    else:
        img = app.send_static_file('sc_logo.png')

    Session.remove()
    return send_file(img, mimetype='image/gif')