Cloud Config: Passwords with non-alphanumeric characters might not work.

[Marco Vanotti]

I am following the documentation for setting up a cloud project and they mention to set up a password for the sql database.
I used a chrome auto-suggested password that contained non-alphabetic characters ('@', '.', and ':'), and that caused the alembic upgrade command to fail:

PYTHONPATH=. alembic upgrade head

  File "/data/fuzzbench/database/alembic/env.py", line 90, in <module>                                                                     
    run_migrations_online()                                                                                                                
  File "/data/fuzzbench/database/alembic/env.py", line 73, in run_migrations_online                                                        
    connectable = engine_from_config(                                                                                                      
  File "/data/fuzzbench/.venv/lib/python3.10/site-packages/sqlalchemy/engine/create.py", line 743, in engine_from_config                   
    return create_engine(url, **options)                                                                                                   
  File "<string>", line 2, in create_engine                                                                                                
  File "/data/fuzzbench/.venv/lib/python3.10/site-packages/sqlalchemy/util/deprecations.py", line 309, in warned                           
    return fn(*args, **kwargs)                                                                                                             
  File "/data/fuzzbench/.venv/lib/python3.10/site-packages/sqlalchemy/engine/create.py", line 518, in create_engine                        
    u = _url.make_url(url)                                                                                                                 
  File "/data/fuzzbench/.venv/lib/python3.10/site-packages/sqlalchemy/engine/url.py", line 725, in make_url                                
    return _parse_rfc1738_args(name_or_url)                                                                                                
  File "/data/fuzzbench/.venv/lib/python3.10/site-packages/sqlalchemy/engine/url.py", line 781, in _parse_rfc1738_args                     
    components["port"] = int(components["port"])                                                                                           
ValueError: invalid literal for int() with base 10: '@127.0.0.1:5432' 

It seems like the regexp used to parse the database url does not support a password with strange characters.
A workaround is to remove the offending characters from the password.

[Dongge Liu]

Sorry, I am not sure if I understood you correctly.
Would removing the offending characters affect the correctness of the password?

Alternatively, we can emphasize that non-alphabetic characters are not supported for now.

[Marco Vanotti]

The password is correct and valid (with the non-alphanumeric characters).

The problem is that the alembic script needs to escape the url before calling create_engine. See the SQL Alchemy docs for the explanation.

They propose two solutions: either use urllib to escape the password before setting it, or using a URL object in sql alchemy. Sadly, it seems like fuzzbench's sqlalchemy version doesn't have the URL module, so it might need to be updated first.

[Marco Vanotti]

On top of the issue with the url quotes, the config set option uses python interpolation strings, so it fails when the password contains %. I uploaded a PR that addresses these two issues, but needs more testing.

[Dongge Liu]

Thanks!