PDF not generated when remote terminal session closed

[ehmatthes]

After uploading the code to generate pdfs of sa_summary, and restarting gunicorn, pdf generation works as long as the terminal is open. Closing the connection to the remote server causes a server error, with the following output in the logs:

Internal Server Error: /sa_summary_pdf/2/
Traceback (most recent call last):
  File "/srv/projects/opencompetencies/venv/lib/python3.4/site-packages/django/core/handlers/base.py", line 132, in get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "/srv/projects/opencompetencies/competencies/views.py", line 82, in sa_summary_pdf
    print('Generating pdf of sa_summary...')
OSError: [Errno 5] Input/output error

This is a more specific reticketing of #120.

[ehmatthes]

Try:

• [x] Removing print() statements from sa_summary_pdf.py.
  • This seems to have fixed it.
• [ ] starting gunicorn with an explicit terminal command, not an alias. (Maybe it's not fully a background process detached from the terminal?

[ehmatthes]

I've read that reportlab is not thread safe, which may play into this.

[ehmatthes]

Closing for now, hopeful this is really fixed.