如何在OpenShift Tornado中提供上传的图像？

Question

I am creating a site using OpenShift with Tornado and I need to use persistent storage for images and other files. Documentation says, what persistent storage path stored in $OPENSHIFT_DATA_DIR. Here is app file system overview:

 |-- app-root
 |   -- data # <--$OPENSHIFT_DATA_DIR
 |   -- repo # 
 |      -- wsgi
 |         -- static
 |            -- img
 |         -- templates
 |         -- ...
 |   -- runtime
 |       -- data
 |       -- repo
 |           -- ...deployed application code

And here I have a problem: I tried to serve images and other files from $OPENSHIFT_DATA_DIR, but it's doesn't work, I always get 404 because $OPENSHIFT_DATA_DIR placed outside of wsgi path. I founded what I'm not alone and Django / Java / Flask developers using OpenShift having same problems.

I tried to serve files from /static folder, but that was bad idea: making git push will delete all new files founded here.

I tried to do something like this , but it doesn't work too for me. Maybe I doing something wrong and it need to rewrite something else to use this trick for Tornado?

Can someone help me? Thanks!

EDIT

Tried to use tornado.web.StaticFileHandler , add it to handlers like this:

__UPLOADS__ = str(os.environ.get('OPENSHIFT_DATA_DIR'))+"/uploads" ... 

handlers =     [(r'/',MainHandler,), 
               (r'/media/(.*)', tornado.web.StaticFileHandler, {'path': __UPLOADS__}), 
               ...,]

Find what this way Tornado replace __UPLOADS__+/media/img.jpg to wsgi/static/img.jpg

Here is application file, maybe it can make something clear:

 #!/usr/bin/env python
 import os
 import sys

 if 'OPENSHIFT_REPO_DIR' in os.environ:
      sys.path.append(os.path.join(os.environ['OPENSHIFT_REPO_DIR'], 'wsgi',))
      virtenv = os.environ['OPENSHIFT_PYTHON_DIR'] + '/virtenv/venv'
      os.environ['PYTHON_EGG_CACHE'] = os.path.join(virtenv, 'lib/python3.3/site-packages')
      virtualenv = os.path.join(virtenv, 'bin/activate_this.py')
      try:
           exec(compile(open(virtualenv).read(), virtualenv, 'exec'),dict(__file__ = virtualenv))
           except IOError:
                pass

 import tornado.wsgi
 from openshift import handlers

 if 'OPENSHIFT_REPO_DIR' in os.environ:
      settings = {
           'cookie_secret': 'TOP_SECRET',
           'template_path' : os.path.join(os.environ['OPENSHIFT_REPO_DIR'], 'wsgi/templates'),
           'xsrf_cookies': True,
           'debug': True,
           'login_url': '/login',
      }
 else:
      settings = {
           'cookie_secret': 'TOP_SECRET',
           'template_path' : os.path.join(os.getcwd(), 'wsgi/templates'),
           'xsrf_cookies': True,
           'debug': True,
           'login_url': '/login',
 }

 application = tornado.wsgi.WSGIApplication(handlers, **settings)

Answer 1

You definitely should add media to data directory out of your project root. Basicly you use MEDIA variable to set this. In settings.py :

MEDIA_ROOT = os.environ.get('OPENSHIFT_DATA_DIR', '')
MEDIA_URL = '/media/'

In your model then use:

logo = models.ImageField(upload_to="logo")

If this does not help, may be you can create symlink from static folder to your media root. For example in deploy action hook .openshift/action_hooks/deploy :

#!/bin/bash

source ${OPENSHIFT_HOMEDIR}python/virtenv/bin/activate
export PYTHON_EGG_CACHE=${OPENSHIFT_HOME_DIR}python/virtenv/lib/python-2.7/site-packages

echo "Executing 'python ${OPENSHIFT_REPO_DIR}wsgi/APP_NAME/manage.py migrate --noinput'"
python "$OPENSHIFT_REPO_DIR"wsgi/APP_NAME/manage.py migrate --noinput

echo "Executing 'python ${OPENSHIFT_REPO_DIR}wsgi/APP_NAME/manage.py collectstatic --noinput -v0'"
python "$OPENSHIFT_REPO_DIR"wsgi/APP_NAME/manage.py collectstatic --noinput -v0

if [ ! -d $OPENSHIFT_REPO_DIR/wsgi/static/ ]; then mkdir $OPENSHIFT_REPO_DIR/wsgi/static/; fi
if [ ! -d $OPENSHIFT_DATA_DIR/media ]; then mkdir $OPENSHIFT_DATA_DIR/media; fi
ln -sf $OPENSHIFT_DATA_DIR/media $OPENSHIFT_REPO_DIR/wsgi/static/media

Basicly check logs for any errors, wrong path settings and you will get there eventually. Good luck!