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Bradley M. Kuhn

Imported some of the GPLv3'd changes from RhodeCode v2.2.5.

This imports changes between changesets 21af6c4eab3d and 6177597791c2 in
RhodeCode's original repository, including only changes to Python files and HTML.

RhodeCode clearly licensed its changes to these files under GPLv3
in their /LICENSE file, which states the following:
The Python code and integrated HTML are licensed under the GPLv3 license.

(See:
https://code.rhodecode.com/rhodecode/files/v2.2.5/LICENSE
or
http://web.archive.org/web/20140512193334/https://code.rhodecode.com/rhodecode/files/f3b123159901f15426d18e3dc395e8369f70ebe0/LICENSE
for an online copy of that LICENSE file)

Conservancy reviewed these changes and confirmed that they can be licensed as
a whole to the Kallithea project under GPLv3-only.

While some of the contents committed herein are clearly licensed
GPLv3-or-later, on the whole we must assume the are GPLv3-only, since the
statement above from RhodeCode indicates that they intend GPLv3-only as their
license, per GPLv3§14 and other relevant sections of GPLv3.

# -*- coding: utf-8 -*-

from celery.loaders.base import BaseLoader
from pylons import config

to_pylons = lambda x: x.replace('_', '.').lower()
to_celery = lambda x: x.replace('.', '_').upper()

LIST_PARAMS = """CELERY_IMPORTS ADMINS ROUTES""".split()


class PylonsSettingsProxy(object):
    """Pylons Settings Proxy

    Proxies settings from pylons.config

    """
    def __getattr__(self, key):
        pylons_key = to_pylons(key)
        try:
            value = config[pylons_key]
            if key in LIST_PARAMS:return value.split()
            return self.type_converter(value)
        except KeyError:
            raise AttributeError(pylons_key)

    def get(self, key):
        try:
            return self.__getattr__(key)
        except AttributeError:
            return None

    def __getitem__(self, key):
        try:
            return self.__getattr__(key)
        except AttributeError:
            raise KeyError()

    def __setattr__(self, key, value):
        pylons_key = to_pylons(key)
        config[pylons_key] = value

    def __setitem__(self, key, value):
        self.__setattr__(key, value)

    def type_converter(self, value):
        #cast to int
        if value.isdigit():
            return int(value)

        #cast to bool
        if value.lower() in ['true', 'false']:
            return value.lower() == 'true'
        return value

class PylonsLoader(BaseLoader):
    """Pylons celery loader

    Maps the celery config onto pylons.config

    """
    def read_configuration(self):
        self.configured = True
        return PylonsSettingsProxy()

    def on_worker_init(self):
        """
        Import task modules.
        """
        self.import_default_modules()