Problem with options whose default is a type dict

[peterbe]

Here's the traceback

Traceback (most recent call last):
  File "/Users/peterbe/virtualenvs/socorro/lib/python2.6/site-packages/django/core/management/commands/runserver.py", line 93, in inner_run
    self.validate(display_num_errors=True)
  File "/Users/peterbe/virtualenvs/socorro/lib/python2.6/site-packages/django/core/management/base.py", line 280, in validate
    num_errors = get_validation_errors(s, app)
  File "/Users/peterbe/virtualenvs/socorro/lib/python2.6/site-packages/django/core/management/validation.py", line 35, in get_validation_errors
    for (app_name, error) in get_app_errors().items():
  File "/Users/peterbe/virtualenvs/socorro/lib/python2.6/site-packages/django/db/models/loading.py", line 166, in get_app_errors
    self._populate()
  File "/Users/peterbe/virtualenvs/socorro/lib/python2.6/site-packages/django/db/models/loading.py", line 72, in _populate
    self.load_app(app_name, True)
  File "/Users/peterbe/virtualenvs/socorro/lib/python2.6/site-packages/django/db/models/loading.py", line 96, in load_app
    models = import_module('.models', app_name)
  File "/Users/peterbe/virtualenvs/socorro/lib/python2.6/site-packages/django/utils/importlib.py", line 35, in import_module
    __import__(name)
  File "/Users/peterbe/dev/MOZILLA/SOCORRO/socorro/webapp-django/crashstats/dataservice/models.py", line 38, in <module>
    environment
  File "/Users/peterbe/virtualenvs/socorro/lib/python2.6/site-packages/configman/__init__.py", line 76, in configuration
    cm = ConfigurationManager(*args, **kwargs)
  File "/Users/peterbe/virtualenvs/socorro/lib/python2.6/site-packages/configman/config_manager.py", line 237, in __init__
    known_keys = self._overlay_expand()
  File "/Users/peterbe/virtualenvs/socorro/lib/python2.6/site-packages/configman/config_manager.py", line 643, in _overlay_expand
    new_req = an_option.value.get_required_config()
  File "/Users/peterbe/virtualenvs/socorro/lib/python2.6/site-packages/configman/dotdict.py", line 167, in __getattr__
    raise KeyError(key)
KeyError: 'get_required_config'

This happened when I was tinkering with @selenamarie 's PR because I was putting this config in:

DATASERVICE_CONFIG_BASE = base.DATASERVICE_CONFIG_BASE
DATASERVICE_CONFIG_BASE['services'] = {
        'Bugs': {
            'transaction_executor_class':
                'socorro.database.transaction_executor.TransactionExecutor',#WithLimitedBackoff',
            'backoff_delays': "0",
            'database_password': '',
            'database_username': 'peterbe',
            'database_name': 'socorro_integration_test',
            'api_whitelist': {
                'hits': ['signature']
            }
        }
    }

The solution was to do this:

DATASERVICE_CONFIG_BASE = base.DATASERVICE_CONFIG_BASE
import json
DATASERVICE_CONFIG_BASE['services'] = {
        'Bugs': {
            'transaction_executor_class':
                'socorro.database.transaction_executor.TransactionExecutor',#WithLimitedBackoff',
            'backoff_delays': "0",
            'database_password': '',
            'database_username': 'peterbe',
            'database_name': 'socorro_integration_test',
            'api_whitelist': json.dumps({  # NOTE!
                'hits': ['signature']
            })
        }
    }

The problem is that the _overlay_expand() goes into the default as if it could be a possible nested thing.

[twobraids]

interestingly, I encountered this problem over the weekend, too. I've got a patch for it.