Question

我有一个flask应用程序，该应用程序在主页上有一个表单，提交后运行一个python脚本，并在完成后返回结果页面。问题是当在脚本上将参数设置得很高时，脚本将花费30秒钟以上的时间运行，并且heroku在完成之前会超时。目前，我所提交的是将表单提交到等待页面。

@app.route('/')
def index():

    return render_template('index.html')


@app.route('/run', methods=['GET', 'POST'])

def test():
    import loopTest



    if request.method == 'GET':

        loopTest.init()
        return 'done'
    if request.method == 'POST':
        loopTest.episodes_form = request.form.get('episode')
        loopTest.max_steps_form = request.form.get('max_steps')
        loopTest.per_step_cost = request.form.get('per_step_cost')
        loopTest.goal_reward = request.form.get('goal_reward')
        loopTest.gamma_form = request.form.get('gamma')
        loopTest.epsilon_form = request.form.get('epsilon')
        loopTest.epsilon_form_decay = request.form.get('epsilon_decay')
        loopTest.alpha_form = request.form.get('alpha')
        loopTest.alpha_form_decay = request.form.get('alpha_decay')
        return render_template('waiting.html')




@app.route('/success', methods=['GET', 'POST'])
def dealy():

    return render_template("result.html")

然后在带有javascript的等待页面上等待脚本完成接收消息的完成。收到此消息后，它将重定向到结果页面。我以为这样可以，但是heroku在30秒后仍然超时。

     var request = new XMLHttpRequest();
    request.open('GET', '/run');

    request.onload=function() {

        if (request.status === 200 && request.responseText === 'done') {
            // long process finished successfully, redirect user
            window.location = '/success';
        } else {
            // ops, we got an error from the server
            alert('Something went wrong.');
        }
    }

    request.onerror = function() {
        // ops, we got an error trying to talk to the server
        alert('Something went wrong.');
    };
request.send();

有什么办法可以解决Ajax的问题？我看过Celery来执行后台任务，但是对于我想做的事情却显得太多了。

作为替代方案，我正在考虑在Google云或AWS上创建虚拟机并从那里运行它。

用ajax绕过heroku请求超时

0 个答案: