103 lines
2.6 KiB
Python
103 lines
2.6 KiB
Python
from __future__ import unicode_literals
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from importlib import import_module
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import logging
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import yaml
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from django.apps import apps
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from django.conf import settings
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from django.utils.functional import Promise
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from django.utils.encoding import force_text
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logger = logging.getLogger(__name__)
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class Namespace(object):
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_registry = {}
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@classmethod
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def get_all(cls):
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return cls._registry.values()
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@classmethod
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def get(cls, name):
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return cls._registry[name]
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@staticmethod
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def initialize():
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for app in apps.get_app_configs():
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try:
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import_module('{}.settings'.format(app.name))
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except ImportError:
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logger.debug('App %s has not settings.py file', app.name)
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else:
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logger.debug(
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'Imported settings.py file for app %s', app.name
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)
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def __unicode__(self):
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return unicode(self.label)
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def __init__(self, name, label):
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if name in self.__class__._registry:
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raise Exception(
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'Namespace names must be unique; "%s" already exists.' % name
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)
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self.name = name
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self.label = label
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self.__class__._registry[name] = self
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self.settings = []
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def add_setting(self, **kwargs):
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return Setting(namespace=self, **kwargs)
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class Setting(object):
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_registry = []
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@staticmethod
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def serialize_value(value):
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if isinstance(value, Promise):
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value = force_text(value)
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return yaml.safe_dump(value, allow_unicode=True)
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@staticmethod
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def deserialize_value(value):
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return yaml.safe_load(value)
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@classmethod
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def invalidate_cache(cls):
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for setting in cls._registry:
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setting.yaml = None
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def __init__(self, namespace, global_name, default, help_text=None, is_path=False):
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self.global_name = global_name
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self.default = default
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self.help_text = help_text
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self.is_path = is_path
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self.yaml = None
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namespace.settings.append(self)
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self.__class__._registry.append(self)
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def __unicode__(self):
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return unicode(self.global_name)
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@property
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def serialized_value(self):
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if not self.yaml:
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self.yaml = Setting.serialize_value(
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getattr(settings, self.global_name, self.default)
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)
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return self.yaml
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@property
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def value(self):
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return Setting.deserialize_value(self.serialized_value)
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@value.setter
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def value(self, value):
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self.yaml = value
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