Reputation: 23
I've recently been struggling to deploy my Flask app to AWS ElasticBeanstalk. I'm fairly new to web projects and AWS so every day is a struggle. Every once in a while I deploy my project to EB (I have been able to solve problems in the past) but since I restructured my app from a monolithic application.py
to a more structured approach, I've been struggling. The deployment itself has succeeded but I'm faced with a 500 error. The log says:
[Wed Apr 19 00:11:57.895790 2017] [:error] mod_wsgi (pid=15947): Target WSGI script '/opt/python/current/app/app/members/views.py' cannot be loaded as Python module. [Wed Apr 19 00:11:57.895846 2017] [:error] mod_wsgi (pid=15947): Exception occurred processing WSGI script '/opt/python/current/app/app/members/views.py'. [Wed Apr 19 00:11:57.895865 2017] [:error] Traceback (most recent call last): [Wed Apr 19 00:11:57.895881 2017] [:error] File "/opt/python/current/app/app/members/views.py", line 14, in [Wed Apr 19 00:11:57.895903 2017] [:error] @application.route('/') [Wed Apr 19 00:11:57.895909 2017] [:error] File "/opt/python/run/venv/lib/python2.7/site-packages/flask/app.py", line 1080, in decorator [Wed Apr 19 00:11:57.895921 2017] [:error] self.add_url_rule(rule, endpoint, f, **options) [Wed Apr 19 00:11:57.895935 2017] [:error] File "/opt/python/run/venv/lib/python2.7/site-packages/flask/app.py", line 64, in wrapper_func [Wed Apr 19 00:11:57.895944 2017] [:error] return f(self, *args, **kwargs) [Wed Apr 19 00:11:57.895949 2017] [:error] File "/opt/python/run/venv/lib/python2.7/site-packages/flask/app.py", line 1051, in add_url_rule [Wed Apr 19 00:11:57.895956 2017] [:error] 'existing endpoint function: %s' % endpoint) [Wed Apr 19 00:11:57.895969 2017] [:error] AssertionError: View function mapping is overwriting an existing endpoint function: index
My apps structure is:
myApp/ runServer.py requirements.txt app/ __init__.py config.py static/ members/ __init__.py views.py models.py templates/
My .ebextensions/<env-name>.config
contains:
option_settings: "aws:elasticbeanstalk:container:python": WSGIPath: app/members/views.py
Lastly, my views.py
file contains all my url routings. I have made sure all of the function names are the same.
Does anybody know what kind of problem/solution I'm looking at? Is there any more info I can provide to help?
Thanks!
Edit: Changing my def index()
function in views.py
to def newFunctionForTesting()
yields AssertionError: View function mapping is overwriting an existing endpoint function: newFunctionForTesting
Edit 2: It may be similar to this one, but in that case the proposed solution was to write everything in a single file, which isn't the approach I was looking for... Maybe Blueprints could work better...
Edit 3: Here's what my app looks like.
app\__init__.py
from flask import Flask, flash, request from urlparse import urlparse, urljoin from urllib2 import urlopen from flask_user import SQLAlchemyAdapter, UserManager, current_user import os from apscheduler.schedulers.background import BackgroundScheduler import pandas as pd from app.members.models import db, User, AcademicData, Role, UserRoles, Query from passlib.hash import bcrypt import datetime import json # Initializes application application = Flask(__name__) application.config.from_object("app.config.Config") # Initializes db db.init_app(application) # Registers user model with db with application.app_context(): db.create_all() # Creates tables defined db_adapter = SQLAlchemyAdapter(db, User) # Register the User model @application.before_first_request def initialize(): scheduler = BackgroundScheduler() scheduler.start() scheduler.add_job(updateData, trigger = "interval", days = 1) def updateData(): ... @application.context_processor def injectFunction(): def getDataTable(id): ... import members.views # Initialize flask-user user_manager = UserManager(db_adapter, application,register_view_function = members.views.protected_register)
app\members\views.py
from flask import redirect, url_for, render_template, request from flask_user import login_required, roles_required, views as user_views from app import application, SITE_ROOT import json import os import pandas as pd @application.route('/') def index(): """ Index view. Currently the dashboard. :return: """ return redirect(url_for('dashboard')) @application.route('/dashboard') @login_required def dashboard(): ... return render_template('dashboard.html') @application.route('/table') @login_required def table(): return render_template('table.html') @application.errorhandler(404) def not_found(error): return render_template('404.html') @application.errorhandler(500) @application.errorhandler(503) def server_error(error): return render_template('503.html') @roles_required('admin') def protected_register(): return user_views.register()
Upvotes: 0
Views: 1061
Reputation: 23
I was following this example to set my WSGIPath, but since @davidism pointed it out, I tried a different approach and it worked. I created a app.wsgi
file that basically just imports my application object and set WSGIPath: app/app.wsgi
in my .ebextensions/<env-name>.config
. The application now deploys and launches successfully through Elastic Beanstalk. My static resources stopped working but I had to update the mapping of the static folder under Configuration > Software Configuration > Static Files
in the Elastic Beanstalk console.
Thanks!
Upvotes: 0