Shopify 不会停止向 Flask 应用发送 webhook答案

【问题标题】：Shopify doesn't stop sending webhook to Flask appShopify 不会停止向 Flask 应用发送 webhook
【发布时间】：2015-04-16 09:32:44
【问题描述】：

我有一个 Flask 应用程序，它侦听传入的 Shopify webhook，执行某些操作，然后响应 200。但是，Shopify 继续发送 webhook，就好像我的应用程序响应了 200 以外的东西一样。

当我用 curl 模拟这个时：

curl -H "Content-Type: application/json" -D /tmp/dump.log -X POST -d @<valid json> <my server>

响应头是：

HTTP/1.1 100 Continue

HTTP/1.1 200 OK
Date: Thu, 16 Apr 2015 09:25:23 GMT
Server: Apache/2.4.7 (Ubuntu)
Content-Length: 0
Content-Type: text/html; charset=utf-8

我相信第一个 100 Continue 是让 Shopify 认为我的应用失败的原因。我在本地实例和生产环境中都得到了相同的响应。

发生了什么，我该如何解决？

编辑

这是处理请求的python代码

import json
from flask_mail import Mail, Message
from pyPdf import PdfFileWriter, PdfFileReader
from flask import Flask
from certificate import Certificate
from flask import request
from purchase import Purchase
from stars import Stars

app = Flask(__name__)
app.config.from_envvar('NAMESTAR_SETTINGS')
app.config["MAIL_SERVER"] = 'smtp.sendgrid.net'
app.config["MAIL_PORT"] = 587
app.config["MAIL_USERNAME"] = app.config.get('EMAIL_LOGIN')
app.config["MAIL_PASSWORD"] = app.config.get('EMAIL_PASSWORD')
app.config["MAIL_DEFAULT_SENDER"] = app.config.get('SENDER')
app.config["PATH"] = app.config.get('PATH')
ADMINS = app.config.get('ADMINS')
mail = Mail(app)


def get_request():
    if request.args.get('hyg') is not None:
        return int(request.args.get('hyg'))
    else:
        return request.data


#returns an instance of Purchase class based on the request
def get_purchase():    
    pass


#creates and saves a PDF created with reportlab
def generate_certificate(purchase):
    pass


#sends the generated PDF to the recipient    
def send_email(certificate_path, recipient, name=""):
    msg = Message("Message", recipients=[recipient])
    with app.open_resource(certificate_path) as fp:
        msg.attach("certificate.pdf", "application/pdf", fp.read())
    f = open(app.config.get('PATH') + "/email_templates/certificate", "r")
    html = f.read()
    msg.html = html % (name)
    mail.send(msg)


@app.route('/', methods=['GET', 'POST'])
def generate():
    try:
        purchase = get_purchase()        
        certificate_path = generate_certificate(purchase)
        send_email(certificate_path, purchase.customer_email(), name=purchase.customer_name())        
    except Exception as e:        
        raise

    return ('', 200)


if __name__ == '__main__':
    app.debug = False
    app.run(debug=False)

服务器是 Apache，这是应用程序的虚拟主机设置

<VirtualHost *:80>
    DocumentRoot /var/www/namestar/current   
    WSGIDaemonProcess namestar user=www-data group=www-data threads=5
    WSGIScriptAlias / /var/www/namestar/current/namestar.wsgi    
    <Directory /var/www/namestar/current>
        WSGIScriptReloading On
        WSGIProcessGroup namestar
        WSGIApplicationGroup %{GLOBAL}
        Order deny,allow
        Allow from all
    </Directory>    
    SetEnv NAMESTAR_SETTINGS="/var/www/namestar/current/config/production.cfg"   
</VirtualHost>

【问题讨论】：

标签： python http flask shopify webhooks

【解决方案1】：

Shopify 说请求超时。事实上，处理过程需要 10 到 20 秒，所以这是有道理的。我将大部分执行移到了它自己的线程：

threading.Thread(target=generate, args=[purchase]).start()

一切都按预期工作。

【讨论】：