在docker化应用程序后无法访问Flask端点 [英] Unable to access flask endpoints after dockerizing the app

问题描述

我正在开发一个烧瓶应用程序，该应用程序已注册了URL列表。我能够在本地运行flask应用程序，并访问为其注册的URL。

I'm working on a flask application which has a list of urls registered. I was able to run the flask app locally and access the urls which are registered for it.

但是当我对应用程序进行Docker化并使用运行它时docker-compose ，我无法访问该应用程序的网址。

But when I dockerize the app and running it using docker-compose, I'm not able to access the urls for the app.

在本地运行该应用程序时，如果我访问该应用程序的 app.url_map ，我就能看到该应用程序的所有已注册网址的列表。 （我创建了一个端点- / urls ，当命中时返回 url_map 列表）

When running the app locally, if I access the app.url_map of the app, I was able to see list of all registered urls for that app. (I created an endpoint - /urls which when hit returns url_map list)

但是当我尝试在docker中运行该应用程序后击中相同的端点- / urls 时，除了 / urls 端点，它本身就是自己。

But when I try to hit the same endpoint - /urls after running the app in docker, I don't see any list in that except the /urls endpoint which is basically itself.

我要去哪里错了？

这是 wsgi.py 文件：

import os
from flask import Flask, jsonify
from app.workload.views import register_workload_urls

def load_urls(app):
    app_mode = os.getenv("APP_MODE")
    if app_mode == "WORKLOAD":
        register_workload_urls(app)

application = Flask(__name__)

@application.route('/urls')
def urls():
    return jsonify({"APP": str(os.getenv("APP_MODE")), "URLs registered": f"{str(application.url_map)}"})

if __name__ == "__main__":
    load_urls(application)
    application.run()

views.py：

def register_workload_urls(application):
    @application.route('/api/workload/health/check/')
    def w_check():
        return jsonify({'status': f"Workload service is {app.config_pub.status}."})

    @application.route('/api/workload/health/up/')
    def w_up():
        app.config_pub.status = "UP"
        app.config_pub.dispatch("UP")
        return jsonify({'status': f"Workload service is {app.config_pub.status}."})

    @application.route('/api/workload/health/down/')
    def w_down():
        app.config_pub.status = "DOWN"
        app.config_pub.dispatch("DOWN")
        return jsonify({'status': f"Workload service is {app.config_pub.status}."})

docker-compose.yml：

  workload_service:
    container_name: workload_container
    restart: always
    image: workload
    build: 
      context: ./dsdp
      dockerfile: Dockerfile.app.local
    ports:
      - "5000:5000"
    environment:
        - PYTHONPATH=.
        - FLASK_APP=wsgi.py
        - FLASK_DEBUG=1
        - CONFIG_PATH=config/local
        - APP_MODE=WORKLOAD
    command: flask run --host=0.0.0.0 --port 5000

Dockerfile.app.local：

FROM python:3.7
RUN mkdir -p /var/www/dsdp/
WORKDIR /var/www/dsdp/
COPY . /var/www/dsdp/
RUN pip3 install --no-cache-dir -r requirements.txt
EXPOSE 5000

在docker中运行时输出 / url ：

Output of /urls when running in docker:

{
  "APP": "WORKLOAD",
  "URLs registered": "Map([<Rule '/urls' (GET, HEAD, OPTIONS) -> urls>,\n <Rule '/static/<filename>' (GET, HEAD, OPTIONS) -> static>])"
}

推荐答案

在 wsgi中包含代码似乎有些问题.py 文件。从 wsgi.py 文件中删除了应用程序创建代码，并粘贴到 app中的 __ init __。py 文件中文件夹并从那里导入函数。

Looks like some issue with having the code in wsgi.py file. Removed app creation code from wsgi.py file and pasted in __init__.py file in app folder and imported the function from there.

现在一切都按预期运行。

Everything is working as expected now.

这篇关于在docker化应用程序后无法访问Flask端点的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！