在 EB 上部署结构化 Flask 应用程序 - 查看函数映射错误
Deploying structured Flask app on EB - View function mapping error
我最近一直在努力将我的 Flask 应用程序部署到 AWS ElasticBeanstalk。我对 Web 项目和 AWS 还很陌生，所以每天都很挣扎。每隔一段时间我就会将我的项目部署到 EB（过去我已经能够解决问题），但是自从我将我的应用程序从单一 application.py 重组为更结构化的方法后，我一直在努力。部署本身已成功，但我遇到了 500 错误。日志说：
[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
我的应用结构是：
myApp/
runServer.py
requirements.txt
app/
__init__.py
config.py
static/
members/
__init__.py
views.py
models.py
templates/
我的 .ebextensions/<env-name>.config 包含：
option_settings:
"aws:elasticbeanstalk:container:python":
WSGIPath: app/members/views.py
最后，我的 views.py 文件包含我所有的 url 路由。我已经确保所有函数名称都相同。
有人知道我在看什么 problem/solution 吗？我可以提供更多信息来帮助您吗？
谢谢！
编辑： 将 views.py 中的 def index() 函数更改为 def newFunctionForTesting() 会产生 AssertionError: View function mapping is overwriting an existing endpoint function: newFunctionForTesting
编辑 2： 它可能类似于 ，但在那种情况下，建议的解决方案是将所有内容写入单个文件，这不是我正在寻找的方法...也许蓝图可以更好地工作...
编辑 3：这是我的应用程序的样子。
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()
我按照 this 示例来设置我的 WSGIPath，但是由于@davidism 指出了它，我尝试了一种不同的方法并且它起作用了。我创建了一个 app.wsgi 文件，基本上只导入我的应用程序对象并在我的 .ebextensions/<env-name>.config 中设置 WSGIPath: app/app.wsgi。该应用程序现在可以通过 Elastic Beanstalk 成功部署和启动。我的静态资源停止工作，但我不得不在 Elastic Beanstalk 控制台中更新 Configuration > Software Configuration > Static Files 下静态文件夹的映射。
谢谢！
我最近一直在努力将我的 Flask 应用程序部署到 AWS ElasticBeanstalk。我对 Web 项目和 AWS 还很陌生，所以每天都很挣扎。每隔一段时间我就会将我的项目部署到 EB（过去我已经能够解决问题），但是自从我将我的应用程序从单一 application.py 重组为更结构化的方法后，我一直在努力。部署本身已成功，但我遇到了 500 错误。日志说：
[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
我的应用结构是：
myApp/
runServer.py
requirements.txt
app/
__init__.py
config.py
static/
members/
__init__.py
views.py
models.py
templates/
我的 .ebextensions/<env-name>.config 包含：
option_settings:
"aws:elasticbeanstalk:container:python":
WSGIPath: app/members/views.py
最后，我的 views.py 文件包含我所有的 url 路由。我已经确保所有函数名称都相同。
有人知道我在看什么 problem/solution 吗？我可以提供更多信息来帮助您吗？
谢谢！
编辑： 将 views.py 中的 def index() 函数更改为 def newFunctionForTesting() 会产生 AssertionError: View function mapping is overwriting an existing endpoint function: newFunctionForTesting
编辑 2： 它可能类似于
编辑 3：这是我的应用程序的样子。
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()
我按照 this 示例来设置我的 WSGIPath，但是由于@davidism 指出了它，我尝试了一种不同的方法并且它起作用了。我创建了一个 app.wsgi 文件，基本上只导入我的应用程序对象并在我的 .ebextensions/<env-name>.config 中设置 WSGIPath: app/app.wsgi。该应用程序现在可以通过 Elastic Beanstalk 成功部署和启动。我的静态资源停止工作，但我不得不在 Elastic Beanstalk 控制台中更新 Configuration > Software Configuration > Static Files 下静态文件夹的映射。
谢谢！