RuntimeError when deploying to GAE (desperately need help)

[Brad Cardello]

Hey everyone, I'm still fairly new to web2py, and completely new to deploying my website (developed using PyCharm, if that matters). So, here's the error I'm getting in the logs whenever I try to access my website:

Traceback (most recent call last):

  File "C:\Program Files (x86)\Google\google_appengine\google\appengine\runtime\wsgi.py", line 240, in Handle

    handler = _config_handle.add_wsgi_middleware(self._LoadHandler())

  File "C:\Program Files (x86)\Google\google_appengine\google\appengine\runtime\wsgi.py", line 299, in _LoadHandler

    handler, path, err = LoadObject(self._handler)

  File "C:\Program Files (x86)\Google\google_appengine\google\appengine\runtime\wsgi.py", line 85, in LoadObject

    obj = __import__(path[0])

  File "C:\Users\Brad Cardello\Desktop\Computer Science\CMPS-183\web2py-class\applications\WebUcscTutor\gaehandler.py", line 40, in <module>

    raise RuntimeError('Running from the wrong folder')

RuntimeError: Running from the wrong folder

INFO     2015-12-07 01:10:16,092 module.py:787] default: "GET / HTTP/1.1" 500 -

I'm really not sure why this is happening, as it gives me this error no matter where gaehandler.py is located in my file system. At the moment, per multiple people's instructions, my app.yaml, gaehandler.py, and main.py are all in the root directory for my project (/web2py-class/applications/WebUcscTutor). I've tried moving it to web2py-class/applications, and web2py-class, but nothing seems to change this error.

Here's my app.yaml

#  For Google App Engine deployment, copy this file to app.yaml
#  and edit as required
#  See http://code.google.com/appengine/docs/python/config/appconfig.html
#  and http://web2py.com/book/default/chapter/11?search=app.yaml

application: ucsc-tutor-website
version: 1
api_version: 1

# use these lines for Python 2.7
# upload app with: appcfg.py update web2py (where 'web2py' is web2py's root directory)
#
runtime: python27
threadsafe: true    # true for WSGI & concurrent requests (Python 2.7 only)

default_expiration: "1m"   # for static files

handlers:

# Warning! Static mapping - below - isn't compatible with 
# the parametric router's language logic. 
# You cannot use them together.

- url: /(.+?)/static/_(\d+\.\d+\.\d+)\/(.+)
  static_files: applications/\1/static/\3
  upload: applications/(.+?)/static/(.+)
  secure: optional
  expiration: "365d"

- url: /(.+?)/static/(.+)
  static_files: applications/\1/static/\2
  upload: applications/(.+?)/static/(.+)
  secure: optional

- url: /favicon.ico
  static_files: applications/welcome/static/favicon.ico
  upload: applications/welcome/static/favicon.ico

- url: /robots.txt
  static_files: applications/welcome/static/robots.txt
  upload: applications/welcome/static/robots.txt

- url: .*
  script: gaehandler.wsgiapp    # WSGI (Python 2.7 only)
  secure: optional

admin_console:
  pages:
  - name: Appstats
    url: /_ah/stats

skip_files: |
 ^(.*/)?(
 (app\.yaml)|
 (app\.yml)|
 (index\.yaml)|
 (index\.yml)|
 (#.*#)|
 (.*~)|
 (.*\.py[co])|
 (.*/RCS/.*)|
 (\..*)|
 (applications/examples/.*)|
 ((examples|welcome)\.(w2p|tar))|
 (applications/.*?/(cron|databases|errors|cache|sessions)/.*)|
 ((logs|scripts)/.*)|
 (anyserver\.py)|
 (web2py\.py)|
 ((cgi|fcgi|modpython|wsgi)handler\.py)|
 (epydoc\.(conf|css))|
 (httpserver\.log)|
 (logging\.example\.conf)|
 (route[rs]\.example\.py)|
 (setup_(app|exe)\.py)|
 (splashlogo\.gif)|
 (parameters_\d+\.py)|
 (options_std.py)|
 (gluon/tests/.*)|
 (gluon/rocket\.py)|
 (contrib/(gateways|markdown|memcache|pymysql)/.*)|
 (contrib/(populate|taskbar_widget)\.py)|
 (google_appengine/.*)|
 (.*\.(bak|orig))|
 )$

builtins:
- remote_api: on
- appstats: on
- admin_redirect: on
- deferred: on

Here's my gaehandler.py:

#!/usr/bin/env python
# -*- coding: utf-8 -*-

"""
This file is part of the web2py Web Framework
Copyrighted by Massimo Di Pierro <mdip...@cs.depaul.edu>
License: LGPLv3 (http://www.gnu.org/licenses/lgpl.html)
"""

##############################################################################
# Configuration parameters for Google App Engine
##############################################################################
LOG_STATS = False      # web2py level log statistics
APPSTATS = True         # GAE level usage statistics and profiling
DEBUG = False          # debug mode
#
# Read more about APPSTATS here
#   http://googleappengine.blogspot.com/2010/03/easy-performance-profiling-with.html
# can be accessed from:
#   http://localhost:8080/_ah/stats
##############################################################################
# All tricks in this file developed by Robin Bhattacharyya
##############################################################################


import time
import os
import sys
import logging
import cPickle
import pickle
import wsgiref.handlers
import datetime

path = os.path.dirname(os.path.abspath(__file__))

# os.chdir(path) ?

if not os.path.isdir('applications'):
    raise RuntimeError('Running from the wrong folder')

sys.path = [path] + [p for p in sys.path if not p == path]

sys.modules['cPickle'] = sys.modules['pickle']


from gluon.settings import global_settings
from google.appengine.ext import webapp
from google.appengine.ext.webapp.util import run_wsgi_app


global_settings.web2py_runtime_gae = True
global_settings.db_sessions = True
if os.environ.get('SERVER_SOFTWARE', '').startswith('Devel'):
    (global_settings.web2py_runtime, DEBUG) = \
        ('gae:development', True)
else:
    (global_settings.web2py_runtime, DEBUG) = \
        ('gae:production', False)


import gluon.main


def log_stats(fun):
    """Function that will act as a decorator to make logging"""
    def newfun(env, res):
        """Log the execution time of the passed function"""
        timer = lambda t: (t.time(), t.clock())
        (t0, c0) = timer(time)
        executed_function = fun(env, res)
        (t1, c1) = timer(time)
        log_info = """**** Request: %.2fms/%.2fms (real time/cpu time)"""
        log_info = log_info % ((t1 - t0) * 1000, (c1 - c0) * 1000)
        logging.info(log_info)
        return executed_function
    return newfun


logging.basicConfig(level=logging.INFO)


def wsgiapp(env, res):
    """Return the wsgiapp"""
    env['PATH_INFO'] = env['PATH_INFO'].decode('latin1').encode('utf8')

    #when using the blobstore image uploader GAE dev SDK passes these as unicode
    # they should be regular strings as they are parts of URLs
    env['wsgi.url_scheme'] = str(env['wsgi.url_scheme'])
    env['QUERY_STRING'] = str(env['QUERY_STRING'])
    env['SERVER_NAME'] = str(env['SERVER_NAME'])

    #this deals with a problem where GAE development server seems to forget
    # the path between requests
    if global_settings.web2py_runtime == 'gae:development':
        gluon.admin.create_missing_folders()

    web2py_path = global_settings.applications_parent  # backward compatibility

    return gluon.main.wsgibase(env, res)


if LOG_STATS or DEBUG:
    wsgiapp = log_stats(wsgiapp)


def main():
    """Run the wsgi app"""
    run_wsgi_app(wsgiapp)

if __name__ == '__main__':
    main()

And here's main.py (generated by PyCharm):

#!/usr/bin/env python
#
# Copyright 2007 Google Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
import webapp2

class MainHandler(webapp2.RequestHandler):
    def get(self):
        self.response.write('Hello world!')

app = webapp2.WSGIApplication([
    ('/', MainHandler)
], debug=True)

Any help would be greatly appreciated! I need this deployed by Wednesday (12/9)

[Massimo Di Pierro]

You should not need that main.py in web2py. web2py does not uses webapp2. You only need app.py and gaehandler.py They look correct. The error is from this lines in gaehandler:

if not os.path.isdir('applications'):
    raise RuntimeError('Running from the wrong folder')

Do you have the correct folder structure?

web2py/

   app.yaml

   gaehandler.py

   web2py.py

   applications/...

   gluon/...

   [etc etc]

[Brad Cardello]

Ah, thank you for the advice on removing main.py. And my folder structure is similar to that, with one change. I don't quite remember if this is something I did manually per my instructor's advice, but instead of web2py/, my folder is called web2py-class. I do have a folder called web2py located elsewhere on my computer, though. Should I move my application from web2py-class/applications/ to web2py/applications? Thank you so much.

[Massimo Di Pierro]

The easiest setup is if you have web2py/ and web2py/applications/ under it. It really does not matter if it is called web2py or not but it matters that web2py.py and gaehandler.py and gluon/ are at the same level as applications.

You can put your applications in a different folder but this requires changing default parameters in examples/options_std.py. I would  not recommend that to a new user.

Massimo

[Brad Cardello]

Alright, so I changed the name from web2py-class to web2py, and I moved app.yaml and gaehandler.py to the same level as applications and gluon/ but Google App Engine Launcher refuses to run it, saying that it could not find app.yaml in the specific application I want it to run. I'm selecting my actual app (i.e.: web2py/applications/myappname), should I just be selecting web2py or web2py/applications? Thank you again for the assistance.

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[Ramkrishan Bhatt]

You need to select complete web2py folder. Also you need to remove Admin app from applications. There is one routes.py where you can configure your default application to be called. 

[Brad Cardello]

Thank you very much for both of your help. I got it to work by adding a routes.py file to my web2py folder, and forcing it to open up to the correct app.

One last question, how would I go about deploying multiple apps from the same applications/ folder? Would I need multiple app.yaml, etc. files? Excuse my complete noobiness, but I'm glad to be learning it!

[Massimo Di Pierro]

from the point of view of GAE, web2py is one app so all the applications/* will be deployed and share the same datastore which is a nightmare. This is why in app.yaml you should make sure only one of the application is deployed. You can have multiple app.yaml to deploy multiple folders.

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[Brad Cardello]

Ah, I see. That's what I suspected. Thank you again for all your help!