872 lines
39 KiB
Python
872 lines
39 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright (C) 2012-2013 Team tiramisu (see AUTHORS for all contributors)
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#
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# This program is free software: you can redistribute it and/or modify it
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# under the terms of the GNU Lesser General Public License as published by the
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# Free Software Foundation, either version 3 of the License, or (at your
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# option) any later version.
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#
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# This program is distributed in the hope that it will be useful, but WITHOUT
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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# FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
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# details.
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#
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# You should have received a copy of the GNU Lesser General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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# The original `Config` design model is unproudly borrowed from
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# the rough pypy's guys: http://codespeak.net/svn/pypy/dist/pypy/config/
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# the whole pypy projet is under MIT licence
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# ____________________________________________________________
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"options handler global entry point"
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import weakref
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from .error import PropertiesOptionError, ConfigError, ConflictError
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from .option import OptionDescription, Option, SymLinkOption, \
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DynSymLinkOption
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from .option.baseoption import valid_name
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from .setting import groups, Settings, default_encoding, undefined
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from .storage import get_storages, get_storage, set_storage, \
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_impl_getstate_setting, get_storages_validation
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from .value import Values, Multi
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from .i18n import _
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class SubConfig(object):
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"""Sub configuration management entry.
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Tree if OptionDescription's responsability. SubConfig are generated
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on-demand. A Config is also a SubConfig.
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Root Config is call context below
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"""
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__slots__ = ('_impl_context', '_impl_descr', '_impl_path')
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def __init__(self, descr, context, subpath=None):
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""" Configuration option management master class
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:param descr: describes the configuration schema
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:type descr: an instance of ``option.OptionDescription``
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:param context: the current root config
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:type context: `Config`
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:type subpath: `str` with the path name
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"""
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# main option description
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error = False
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try:
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if descr is not None and not descr.impl_is_optiondescription(): # pragma: optional cover
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error = True
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except AttributeError:
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error = True
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if error:
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raise TypeError(_('descr must be an optiondescription, not {0}'
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).format(type(descr)))
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self._impl_descr = descr
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# sub option descriptions
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if not isinstance(context, weakref.ReferenceType): # pragma: optional cover
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raise ValueError('context must be a Weakref')
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self._impl_context = context
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self._impl_path = subpath
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def cfgimpl_reset_cache(self, only_expired=False, only=('values',
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'settings')):
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"remove cache (in context)"
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self._cfgimpl_get_context().cfgimpl_reset_cache(only_expired, only) # pragma: optional cover
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def cfgimpl_get_home_by_path(self, path, force_permissive=False):
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""":returns: tuple (config, name)"""
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path = path.split('.')
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for step in path[:-1]:
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self = self.getattr(step,
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force_permissive=force_permissive)
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return self, path[-1]
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#def __hash__(self):
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#FIXME
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# return hash(self.cfgimpl_get_description().impl_getkey(self))
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#def __eq__(self, other):
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#FIXME
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# "Config's comparison"
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# if not isinstance(other, Config):
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# return False
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# return self.cfgimpl_get_description().impl_getkey(self) == \
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# other.cfgimpl_get_description().impl_getkey(other)
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#def __ne__(self, other):
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#FIXME
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# "Config's comparison"
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# if not isinstance(other, Config):
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# return True
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# return not self == other
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# ______________________________________________________________________
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def __iter__(self, force_permissive=False):
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"""Pythonesque way of parsing group's ordered options.
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iteration only on Options (not OptionDescriptions)"""
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for child in self.cfgimpl_get_description()._impl_getchildren(
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context=self._cfgimpl_get_context()):
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if not child.impl_is_optiondescription():
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try:
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name = child.impl_getname()
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yield name, self.getattr(name,
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force_permissive=force_permissive)
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except GeneratorExit: # pragma: optional cover
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raise StopIteration
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except PropertiesOptionError: # pragma: optional cover
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pass # option with properties
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def iter_all(self, force_permissive=False):
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"""A way of parsing options **and** groups.
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iteration on Options and OptionDescriptions."""
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for child in self.cfgimpl_get_description().impl_getchildren():
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try:
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yield child.impl_getname(), self.getattr(child.impl_getname(),
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force_permissive=force_permissive)
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except GeneratorExit: # pragma: optional cover
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raise StopIteration
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except PropertiesOptionError: # pragma: optional cover
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pass # option with properties
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def iter_groups(self, group_type=None, force_permissive=False):
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"""iteration on groups objects only.
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All groups are returned if `group_type` is `None`, otherwise the groups
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can be filtered by categories (families, or whatever).
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:param group_type: if defined, is an instance of `groups.GroupType`
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or `groups.MasterGroupType` that lives in
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`setting.groups`
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"""
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if group_type is not None and not isinstance(group_type,
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groups.GroupType): # pragma: optional cover
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raise TypeError(_("unknown group_type: {0}").format(group_type))
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for child in self.cfgimpl_get_description()._impl_getchildren(
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context=self._cfgimpl_get_context()):
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if child.impl_is_optiondescription():
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try:
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if group_type is None or (group_type is not None and
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child.impl_get_group_type()
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== group_type):
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name = child.impl_getname()
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yield name, self.getattr(name, force_permissive=force_permissive)
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except GeneratorExit: # pragma: optional cover
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raise StopIteration
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except PropertiesOptionError: # pragma: optional cover
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pass
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# ______________________________________________________________________
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def __str__(self):
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"Config's string representation"
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lines = []
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for name, grp in self.iter_groups():
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lines.append("[{0}]".format(name))
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for name, value in self:
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try:
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lines.append("{0} = {1}".format(name, value))
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except UnicodeEncodeError: # pragma: optional cover
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lines.append("{0} = {1}".format(name,
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value.encode(default_encoding)))
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return '\n'.join(lines)
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__repr__ = __str__
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def _cfgimpl_get_context(self):
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"""context could be None, we need to test it
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context is None only if all reference to `Config` object is deleted
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(for example we delete a `Config` and we manipulate a reference to
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old `SubConfig`, `Values`, `Multi` or `Settings`)
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"""
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context = self._impl_context()
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if context is None: # pragma: optional cover
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raise ConfigError(_('the context does not exist anymore'))
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return context
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def cfgimpl_get_description(self):
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if self._impl_descr is None: # pragma: optional cover
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raise ConfigError(_('no option description found for this config'
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' (may be GroupConfig)'))
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else:
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return self._impl_descr
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def cfgimpl_get_settings(self):
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return self._cfgimpl_get_context()._impl_settings
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def cfgimpl_get_values(self):
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return self._cfgimpl_get_context()._impl_values
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# ____________________________________________________________
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# attribute methods
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def __setattr__(self, name, value):
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"attribute notation mechanism for the setting of the value of an option"
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self._setattr(name, value)
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def _setattr(self, name, value, force_permissive=False):
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if name.startswith('_impl_'):
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object.__setattr__(self, name, value)
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return
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if '.' in name: # pragma: optional cover
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homeconfig, name = self.cfgimpl_get_home_by_path(name)
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return homeconfig._setattr(name, value, force_permissive)
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context = self._cfgimpl_get_context()
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child = self.cfgimpl_get_description().__getattr__(name,
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context=context)
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if isinstance(child, OptionDescription):
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raise TypeError(_("can't assign to an OptionDescription")) # pragma: optional cover
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elif isinstance(child, SymLinkOption) and \
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not isinstance(child, DynSymLinkOption): # pragma: no dynoptiondescription cover
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path = context.cfgimpl_get_description().impl_get_path_by_opt(
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child._impl_getopt())
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context._setattr(path, value, force_permissive=force_permissive)
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else:
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subpath = self._get_subpath(name)
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self.cfgimpl_get_values().setitem(child, value, subpath,
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force_permissive=force_permissive)
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def __delattr__(self, name):
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context = self._cfgimpl_get_context()
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child = self.cfgimpl_get_description().__getattr__(name, context)
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self.cfgimpl_get_values().__delitem__(child)
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def __getattr__(self, name):
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return self.getattr(name)
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def _getattr(self, name, force_permissive=False, validate=True): # pragma: optional cover
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"""use getattr instead of _getattr
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"""
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return self.getattr(name, force_permissive, validate)
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def _get_subpath(self, name):
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if self._impl_path is None:
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subpath = name
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else:
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subpath = self._impl_path + '.' + name
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return subpath
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def getattr(self, name, force_permissive=False, validate=True,
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_setting_properties=undefined, index=None):
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"""
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attribute notation mechanism for accessing the value of an option
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:param name: attribute name
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:return: option's value if name is an option name, OptionDescription
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otherwise
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"""
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# attribute access by passing a path,
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# for instance getattr(self, "creole.general.family.adresse_ip_eth0")
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if '.' in name:
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homeconfig, name = self.cfgimpl_get_home_by_path(
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name, force_permissive=force_permissive)
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return homeconfig.getattr(name, force_permissive=force_permissive,
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validate=validate,
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_setting_properties=_setting_properties,
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index=index)
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context = self._cfgimpl_get_context()
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option = self.cfgimpl_get_description().__getattr__(name,
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context=context)
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subpath = self._get_subpath(name)
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if isinstance(option, DynSymLinkOption):
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return self.cfgimpl_get_values()._get_cached_value(
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option, path=subpath,
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validate=validate,
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force_permissive=force_permissive,
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setting_properties=_setting_properties, index=index)
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elif isinstance(option, SymLinkOption): # pragma: no dynoptiondescription cover
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path = context.cfgimpl_get_description().impl_get_path_by_opt(
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option._impl_getopt())
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return context.getattr(path, validate=validate,
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force_permissive=force_permissive,
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_setting_properties=_setting_properties,
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index=index)
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elif option.impl_is_optiondescription():
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self.cfgimpl_get_settings().validate_properties(
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option, True, False, path=subpath,
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force_permissive=force_permissive,
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setting_properties=_setting_properties)
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return SubConfig(option, self._impl_context, subpath)
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else:
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return self.cfgimpl_get_values()._get_cached_value(
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option, path=subpath,
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validate=validate,
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force_permissive=force_permissive,
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setting_properties=_setting_properties,
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index=index)
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def find(self, bytype=None, byname=None, byvalue=undefined, type_='option',
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check_properties=True, force_permissive=False):
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"""
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finds a list of options recursively in the config
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:param bytype: Option class (BoolOption, StrOption, ...)
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:param byname: filter by Option.impl_getname()
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:param byvalue: filter by the option's value
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:returns: list of matching Option objects
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"""
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return self._cfgimpl_get_context()._find(bytype, byname, byvalue,
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first=False,
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type_=type_,
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_subpath=self.cfgimpl_get_path(False),
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check_properties=check_properties,
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force_permissive=force_permissive)
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def find_first(self, bytype=None, byname=None, byvalue=undefined,
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type_='option', display_error=True, check_properties=True,
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force_permissive=False):
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"""
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finds an option recursively in the config
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:param bytype: Option class (BoolOption, StrOption, ...)
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:param byname: filter by Option.impl_getname()
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:param byvalue: filter by the option's value
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:returns: list of matching Option objects
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"""
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return self._cfgimpl_get_context()._find(
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bytype, byname, byvalue, first=True, type_=type_,
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_subpath=self.cfgimpl_get_path(False), display_error=display_error,
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check_properties=check_properties,
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force_permissive=force_permissive)
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def _find(self, bytype, byname, byvalue, first, type_='option',
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_subpath=None, check_properties=True, display_error=True,
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force_permissive=False, only_path=undefined,
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only_option=undefined, setting_properties=undefined):
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"""
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convenience method for finding an option that lives only in the subtree
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:param first: return only one option if True, a list otherwise
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:return: find list or an exception if nothing has been found
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"""
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def _filter_by_value():
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if byvalue is undefined:
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return True
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try:
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value = self.getattr(path, force_permissive=force_permissive,
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_setting_properties=setting_properties)
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if isinstance(value, Multi):
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return byvalue in value
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else:
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return value == byvalue
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# a property is a restriction upon the access of the value
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except PropertiesOptionError: # pragma: optional cover
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return False
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if type_ not in ('option', 'path', 'value'): # pragma: optional cover
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raise ValueError(_('unknown type_ type {0}'
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'for _find').format(type_))
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find_results = []
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# if value and/or check_properties are set, need all avalaible option
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# If first one has no good value or not good property check second one
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# and so on
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only_first = first is True and byvalue is None and \
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check_properties is None
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if only_path is not undefined:
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options = [(only_path, only_option)]
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else:
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options = self.cfgimpl_get_description().impl_get_options_paths(
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bytype, byname, _subpath, only_first,
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self._cfgimpl_get_context())
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for path, option in options:
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if not _filter_by_value():
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continue
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#remove option with propertyerror, ...
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if byvalue is undefined and check_properties:
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try:
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value = self.getattr(path,
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force_permissive=force_permissive,
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_setting_properties=setting_properties)
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except PropertiesOptionError: # pragma: optional cover
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# a property restricts the access of the value
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continue
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if type_ == 'value':
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retval = value
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elif type_ == 'path':
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retval = path
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elif type_ == 'option':
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retval = option
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if first:
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return retval
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else:
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find_results.append(retval)
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return self._find_return_results(find_results, display_error)
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def _find_return_results(self, find_results, display_error):
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if find_results == []: # pragma: optional cover
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if display_error:
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raise AttributeError(_("no option found in config"
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" with these criteria"))
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else:
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# translation is slow
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raise AttributeError()
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else:
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return find_results
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def make_dict(self, flatten=False, _currpath=None, withoption=None,
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withvalue=undefined, force_permissive=False,
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setting_properties=undefined):
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"""exports the whole config into a `dict`, for example:
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>>> print cfg.make_dict()
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{'od2.var4': None, 'od2.var5': None, 'od2.var6': None}
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:param flatten: returns a dict(name=value) instead of a dict(path=value)
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::
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>>> print cfg.make_dict(flatten=True)
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{'var5': None, 'var4': None, 'var6': None}
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:param withoption: returns the options that are present in the very same
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`OptionDescription` than the `withoption` itself::
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>>> print cfg.make_dict(withoption='var1')
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{'od2.var4': None, 'od2.var5': None,
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'od2.var6': None,
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'od2.var1': u'value',
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'od1.var1': None,
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'od1.var3': None,
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'od1.var2': None}
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:param withvalue: returns the options that have the value `withvalue`
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::
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>>> print c.make_dict(withoption='var1',
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withvalue=u'value')
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{'od2.var4': None,
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'od2.var5': None,
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'od2.var6': None,
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'od2.var1': u'value'}
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:returns: dict of Option's name (or path) and values
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"""
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pathsvalues = []
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if _currpath is None:
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_currpath = []
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if withoption is None and withvalue is not undefined: # pragma: optional cover
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raise ValueError(_("make_dict can't filtering with value without "
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"option"))
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if setting_properties is undefined:
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setting_properties = self.cfgimpl_get_settings()._getproperties(
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read_write=False)
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if withoption is not None:
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context = self._cfgimpl_get_context()
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for path in context._find(bytype=None, byname=withoption,
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byvalue=withvalue, first=False,
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type_='path', _subpath=self.cfgimpl_get_path(False),
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force_permissive=force_permissive,
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setting_properties=setting_properties):
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path = '.'.join(path.split('.')[:-1])
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opt = context.unwrap_from_path(path, force_permissive=True)
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mypath = self.cfgimpl_get_path()
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if mypath is not None:
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if mypath == path:
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withoption = None
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withvalue = undefined
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break
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else:
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tmypath = mypath + '.'
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if not path.startswith(tmypath): # pragma: optional cover
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raise AttributeError(_('unexpected path {0}, '
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'should start with {1}'
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'').format(path, mypath))
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path = path[len(tmypath):]
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self._make_sub_dict(opt, path, pathsvalues, _currpath, flatten,
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force_permissive=force_permissive,
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setting_properties=setting_properties)
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#withoption can be set to None below !
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if withoption is None:
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for opt in self.cfgimpl_get_description().impl_getchildren():
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path = opt.impl_getname()
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self._make_sub_dict(opt, path, pathsvalues, _currpath, flatten,
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force_permissive=force_permissive,
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setting_properties=setting_properties)
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if _currpath == []:
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options = dict(pathsvalues)
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return options
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return pathsvalues
|
|
|
|
def _make_sub_dict(self, opt, path, pathsvalues, _currpath, flatten,
|
|
setting_properties, force_permissive=False):
|
|
try:
|
|
if opt.impl_is_optiondescription():
|
|
pathsvalues += self.getattr(path,
|
|
force_permissive=force_permissive,
|
|
_setting_properties=setting_properties).make_dict(
|
|
flatten,
|
|
_currpath + path.split('.'),
|
|
force_permissive=force_permissive,
|
|
setting_properties=setting_properties)
|
|
else:
|
|
value = self.getattr(opt.impl_getname(),
|
|
force_permissive=force_permissive,
|
|
_setting_properties=setting_properties)
|
|
if flatten:
|
|
name = opt.impl_getname()
|
|
else:
|
|
name = '.'.join(_currpath + [opt.impl_getname()])
|
|
pathsvalues.append((name, value))
|
|
except PropertiesOptionError: # pragma: optional cover
|
|
pass
|
|
|
|
def cfgimpl_get_path(self, dyn=True):
|
|
descr = self.cfgimpl_get_description()
|
|
if not dyn and descr.impl_is_dynoptiondescription():
|
|
context_descr = self._cfgimpl_get_context().cfgimpl_get_description()
|
|
return context_descr.impl_get_path_by_opt(descr._impl_getopt())
|
|
return self._impl_path
|
|
|
|
|
|
class _CommonConfig(SubConfig):
|
|
"abstract base class for the Config, GroupConfig and the MetaConfig"
|
|
__slots__ = ('_impl_values', '_impl_settings', '_impl_meta', '_impl_test')
|
|
|
|
def _impl_build_all_caches(self):
|
|
descr = self.cfgimpl_get_description()
|
|
if not descr.impl_already_build_caches():
|
|
descr.impl_build_cache()
|
|
descr.impl_build_cache_option()
|
|
|
|
def read_only(self):
|
|
"read only is a global config's setting, see `settings.py`"
|
|
self.cfgimpl_get_settings().read_only()
|
|
|
|
def read_write(self):
|
|
"read write is a global config's setting, see `settings.py`"
|
|
self.cfgimpl_get_settings().read_write()
|
|
|
|
def getowner(self, opt, index=None, force_permissive=False):
|
|
"""convenience method to retrieve an option's owner
|
|
from the config itself
|
|
"""
|
|
if not isinstance(opt, Option) and \
|
|
not isinstance(opt, SymLinkOption) and \
|
|
not isinstance(opt, DynSymLinkOption): # pragma: optional cover
|
|
raise TypeError(_('opt in getowner must be an option not {0}'
|
|
'').format(type(opt)))
|
|
return self.cfgimpl_get_values().getowner(opt, index=index,
|
|
force_permissive=force_permissive)
|
|
|
|
def unwrap_from_path(self, path, force_permissive=False):
|
|
"""convenience method to extract and Option() object from the Config()
|
|
and it is **fast**: finds the option directly in the appropriate
|
|
namespace
|
|
|
|
:returns: Option()
|
|
"""
|
|
context = self._cfgimpl_get_context()
|
|
if '.' in path:
|
|
homeconfig, path = self.cfgimpl_get_home_by_path(
|
|
path, force_permissive=force_permissive)
|
|
return homeconfig.cfgimpl_get_description().__getattr__(path, context=context)
|
|
return self.cfgimpl_get_description().__getattr__(path, context=context)
|
|
|
|
def cfgimpl_get_path(self, dyn=True):
|
|
return None
|
|
|
|
def cfgimpl_get_meta(self):
|
|
if self._impl_meta is not None:
|
|
return self._impl_meta()
|
|
|
|
# information
|
|
def impl_set_information(self, key, value):
|
|
"""updates the information's attribute
|
|
|
|
:param key: information's key (ex: "help", "doc"
|
|
:param value: information's value (ex: "the help string")
|
|
"""
|
|
self._impl_values.set_information(key, value)
|
|
|
|
def impl_get_information(self, key, default=undefined):
|
|
"""retrieves one information's item
|
|
|
|
:param key: the item string (ex: "help")
|
|
"""
|
|
return self._impl_values.get_information(key, default)
|
|
|
|
# ----- state
|
|
def __getstate__(self):
|
|
if self._impl_meta is not None:
|
|
raise ConfigError(_('cannot serialize Config with MetaConfig')) # pragma: optional cover
|
|
slots = set()
|
|
for subclass in self.__class__.__mro__:
|
|
if subclass is not object:
|
|
slots.update(subclass.__slots__)
|
|
slots -= frozenset(['_impl_context', '_impl_meta', '__weakref__'])
|
|
state = {}
|
|
for slot in slots:
|
|
try:
|
|
state[slot] = getattr(self, slot)
|
|
except AttributeError: # pragma: optional cover
|
|
pass
|
|
storage = self._impl_values._p_._storage
|
|
if not storage.serializable:
|
|
raise ConfigError(_('this storage is not serialisable, could be a '
|
|
'none persistent storage')) # pragma: optional cover
|
|
state['_storage'] = {'session_id': storage.session_id,
|
|
'persistent': storage.persistent}
|
|
state['_impl_setting'] = _impl_getstate_setting()
|
|
return state
|
|
|
|
def __setstate__(self, state):
|
|
for key, value in state.items():
|
|
if key not in ['_storage', '_impl_setting']:
|
|
setattr(self, key, value)
|
|
set_storage('config', **state['_impl_setting'])
|
|
self._impl_context = weakref.ref(self)
|
|
self._impl_settings.context = weakref.ref(self)
|
|
self._impl_values.context = weakref.ref(self)
|
|
storage = get_storage('config', test=self._impl_test, **state['_storage'])
|
|
self._impl_values._impl_setstate(storage)
|
|
self._impl_settings._impl_setstate(storage)
|
|
self._impl_meta = None
|
|
|
|
def _gen_fake_values(self):
|
|
fake_config = Config(self._impl_descr, persistent=False,
|
|
force_values=get_storages_validation(),
|
|
force_settings=self.cfgimpl_get_settings())
|
|
fake_config.cfgimpl_get_values()._p_._values = self.cfgimpl_get_values()._p_._values
|
|
return fake_config
|
|
|
|
def duplicate(self):
|
|
config = Config(self._impl_descr)
|
|
config.cfgimpl_get_values()._p_._values = self.cfgimpl_get_values()._p_._values
|
|
config.cfgimpl_get_settings()._p_._properties = self.cfgimpl_get_settings()._p_.get_modified_properties()
|
|
config.cfgimpl_get_settings()._p_._permissives = self.cfgimpl_get_settings()._p_.get_modified_permissives()
|
|
return config
|
|
|
|
|
|
# ____________________________________________________________
|
|
class Config(_CommonConfig):
|
|
"main configuration management entry"
|
|
__slots__ = ('__weakref__', '_impl_test', '_impl_name')
|
|
|
|
def __init__(self, descr, session_id=None, persistent=False,
|
|
name=undefined, force_values=None, force_settings=None):
|
|
""" Configuration option management master class
|
|
|
|
:param descr: describes the configuration schema
|
|
:type descr: an instance of ``option.OptionDescription``
|
|
:param context: the current root config
|
|
:type context: `Config`
|
|
:param session_id: session ID is import with persistent Config to
|
|
retrieve good session
|
|
:type session_id: `str`
|
|
:param persistent: if persistent, don't delete storage when leaving
|
|
:type persistent: `boolean`
|
|
"""
|
|
if force_settings is not None and force_values is not None:
|
|
self._impl_settings = force_settings
|
|
self._impl_values = Values(self, force_values)
|
|
else:
|
|
settings, values = get_storages(self, session_id, persistent)
|
|
if name is undefined:
|
|
name = 'config'
|
|
if session_id is not None:
|
|
name += session_id
|
|
if name is not None and not valid_name(name): # pragma: optional cover
|
|
raise ValueError(_("invalid name: {0} for config").format(name))
|
|
self._impl_settings = Settings(self, settings)
|
|
self._impl_values = Values(self, values)
|
|
super(Config, self).__init__(descr, weakref.ref(self))
|
|
self._impl_build_all_caches()
|
|
self._impl_meta = None
|
|
#undocumented option used only in test script
|
|
self._impl_test = False
|
|
self._impl_name = name
|
|
|
|
def cfgimpl_reset_cache(self,
|
|
only_expired=False,
|
|
only=('values', 'settings')):
|
|
if 'values' in only:
|
|
self.cfgimpl_get_values().reset_cache(only_expired=only_expired)
|
|
if 'settings' in only:
|
|
self.cfgimpl_get_settings().reset_cache(only_expired=only_expired)
|
|
|
|
def impl_getname(self):
|
|
return self._impl_name
|
|
|
|
|
|
class GroupConfig(_CommonConfig):
|
|
__slots__ = ('__weakref__', '_impl_children', '_impl_name')
|
|
|
|
def __init__(self, children, session_id=None, persistent=False,
|
|
_descr=None, name=undefined):
|
|
if not isinstance(children, list):
|
|
raise ValueError(_("groupconfig's children must be a list"))
|
|
names = []
|
|
for child in children:
|
|
if not isinstance(child, _CommonConfig):
|
|
raise ValueError(_("groupconfig's children must be Config, MetaConfig or GroupConfig"))
|
|
name_ = child._impl_name
|
|
if name_ is None:
|
|
raise ValueError(_('name must be set to config before creating groupconfig'))
|
|
names.append(name_)
|
|
if len(names) != len(set(names)):
|
|
for idx in xrange(1, len(names) + 1):
|
|
name = names.pop(0)
|
|
if name in names:
|
|
raise ConflictError(_('config name must be uniq in '
|
|
'groupconfig for {0}').format(name))
|
|
self._impl_children = children
|
|
settings, values = get_storages(self, session_id, persistent)
|
|
self._impl_settings = Settings(self, settings)
|
|
self._impl_values = Values(self, values)
|
|
super(GroupConfig, self).__init__(_descr, weakref.ref(self))
|
|
self._impl_meta = None
|
|
#undocumented option used only in test script
|
|
self._impl_test = False
|
|
if name is undefined:
|
|
name = session_id
|
|
self._impl_name = name
|
|
|
|
def cfgimpl_get_children(self):
|
|
return self._impl_children
|
|
|
|
#def cfgimpl_get_context(self):
|
|
# "a meta config is a config which has a setting, that is itself"
|
|
# return self
|
|
|
|
def cfgimpl_reset_cache(self,
|
|
only_expired=False,
|
|
only=('values', 'settings')):
|
|
if 'values' in only:
|
|
self.cfgimpl_get_values().reset_cache(only_expired=only_expired)
|
|
if 'settings' in only:
|
|
self.cfgimpl_get_settings().reset_cache(only_expired=only_expired)
|
|
for child in self._impl_children:
|
|
child.cfgimpl_reset_cache(only_expired=only_expired, only=only)
|
|
|
|
def set_value(self, path, value):
|
|
"""Setattr not in current GroupConfig, but in each children
|
|
"""
|
|
for child in self._impl_children:
|
|
try:
|
|
if isinstance(child, MetaConfig):
|
|
child.set_value(path, value, only_config=True)
|
|
elif isinstance(child, GroupConfig):
|
|
child.set_value(path, value)
|
|
else:
|
|
setattr(child, path, value)
|
|
except PropertiesOptionError:
|
|
pass
|
|
|
|
def find_firsts(self, byname=None, bypath=undefined, byoption=undefined,
|
|
byvalue=undefined, display_error=True, _sub=False,
|
|
check_properties=True):
|
|
"""Find first not in current GroupConfig, but in each children
|
|
"""
|
|
ret = []
|
|
|
|
#if MetaConfig, all children have same OptionDescription in context
|
|
#so search only one time the option for all children
|
|
if bypath is undefined and byname is not None and \
|
|
isinstance(self, MetaConfig):
|
|
bypath = self._find(bytype=None, byvalue=undefined, byname=byname,
|
|
first=True, type_='path',
|
|
check_properties=None,
|
|
display_error=display_error)
|
|
byname = None
|
|
byoption = self.cfgimpl_get_description(
|
|
).impl_get_opt_by_path(bypath)
|
|
|
|
for child in self._impl_children:
|
|
try:
|
|
if isinstance(child, GroupConfig):
|
|
ret.extend(child.find_firsts(byname=byname, bypath=bypath,
|
|
byoption=byoption,
|
|
byvalue=byvalue,
|
|
check_properties=check_properties,
|
|
display_error=False,
|
|
_sub=True))
|
|
else:
|
|
child._find(None, byname, byvalue, first=True,
|
|
type_='path', display_error=False,
|
|
check_properties=check_properties,
|
|
only_path=bypath, only_option=byoption)
|
|
ret.append(child)
|
|
except AttributeError:
|
|
pass
|
|
if _sub:
|
|
return ret
|
|
else:
|
|
return GroupConfig(self._find_return_results(ret, display_error))
|
|
|
|
def __repr__(self):
|
|
return object.__repr__(self)
|
|
|
|
def __str__(self):
|
|
ret = ''
|
|
for child in self._impl_children:
|
|
ret += '({0})\n'.format(child._impl_name)
|
|
try:
|
|
ret += super(GroupConfig, self).__str__()
|
|
except ConfigError:
|
|
pass
|
|
return ret
|
|
|
|
def getattr(self, name, force_permissive=False, validate=True,
|
|
_setting_properties=undefined):
|
|
for child in self._impl_children:
|
|
if name == child._impl_name:
|
|
return child
|
|
return super(GroupConfig, self).getattr(name, force_permissive,
|
|
validate,
|
|
_setting_properties=_setting_properties)
|
|
|
|
|
|
class MetaConfig(GroupConfig):
|
|
__slots__ = tuple()
|
|
|
|
def __init__(self, children, session_id=None, persistent=False,
|
|
name=undefined):
|
|
descr = None
|
|
for child in children:
|
|
if not isinstance(child, _CommonConfig):
|
|
raise TypeError(_("metaconfig's children "
|
|
"should be config, not {0}"
|
|
).format(type(child)))
|
|
if child.cfgimpl_get_meta() is not None:
|
|
raise ValueError(_("child has already a metaconfig's"))
|
|
if descr is None:
|
|
descr = child.cfgimpl_get_description()
|
|
elif not descr is child.cfgimpl_get_description():
|
|
raise ValueError(_('all config in metaconfig must '
|
|
'have the same optiondescription'))
|
|
child._impl_meta = weakref.ref(self)
|
|
|
|
super(MetaConfig, self).__init__(children, session_id, persistent,
|
|
descr, name)
|
|
|
|
def set_value(self, path, value, force_default=False,
|
|
force_dont_change_value=False, force_default_if_same=False,
|
|
only_config=False):
|
|
"""only_config: could be set if you want modify value in all Config included in
|
|
this MetaConfig
|
|
"""
|
|
if only_config:
|
|
if force_default or force_default_if_same or force_dont_change_value:
|
|
raise ValueError(_('force_default, force_default_if_same or '
|
|
'force_dont_change_value cannot be set with'
|
|
' only_config'))
|
|
return super(MetaConfig, self).set_value(path, value)
|
|
if force_default or force_default_if_same or force_dont_change_value:
|
|
if force_default and force_dont_change_value:
|
|
raise ValueError(_('force_default and force_dont_change_value'
|
|
' cannot be set together'))
|
|
opt = self.cfgimpl_get_description().impl_get_opt_by_path(path)
|
|
for child in self._impl_children:
|
|
if force_default_if_same or force_default:
|
|
if force_default_if_same:
|
|
if not child.cfgimpl_get_values()._contains(path):
|
|
child_value = undefined
|
|
else:
|
|
child_value = child.getattr(path)
|
|
if force_default or value == child_value:
|
|
child.cfgimpl_get_values().reset(opt, path=path,
|
|
validate=False)
|
|
continue
|
|
if force_dont_change_value:
|
|
child_value = child.getattr(path)
|
|
if value != child_value:
|
|
setattr(child, path, child_value)
|
|
|
|
setattr(self, path, value)
|