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if we delete all reference to a Config and we have reference to old SubConfig, Values, Multi or Settings, make a ConfigError instead of AttributError on NoneType object

This commit is contained in:
Emmanuel Garette 2014-01-25 11:20:11 +01:00
parent 21a67971c5
commit 138018dfe9
4 changed files with 110 additions and 43 deletions
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24
test/test_config.py
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@ -9,7 +9,7 @@ from py.test import raises
from tiramisu.config import Config from tiramisu.config import Config
from tiramisu.option import IntOption, FloatOption, StrOption, ChoiceOption, \ from tiramisu.option import IntOption, FloatOption, StrOption, ChoiceOption, \
BoolOption, UnicodeOption, OptionDescription BoolOption, UnicodeOption, OptionDescription
from tiramisu.error import ConflictError from tiramisu.error import ConflictError, ConfigError
def make_description(): def make_description():
@ -273,4 +273,24 @@ def test_no_validation():
setting.append('validator') setting.append('validator')
raises(ValueError, 'c.test1') raises(ValueError, 'c.test1')
del(c.test1) del(c.test1)
assert c.test1 == None assert c.test1 is None
def test_delete_config_with_subconfig():
test = IntOption('test', '')
multi = IntOption('multi', '', multi=True)
od = OptionDescription('od', '', [test, multi])
odroot = OptionDescription('odroot', '', [od])
c = Config(odroot)
sub = c.od
val = c.cfgimpl_get_values()
setting = c.cfgimpl_get_settings()
val[test]
val[multi]
setting[test]
sub.make_dict()
del(c)
raises(ConfigError, 'val[test]')
raises(ConfigError, 'val[multi]')
raises(ConfigError, 'setting[test]')
raises(ConfigError, 'sub.make_dict()')

10
tiramisu/config.py
View File

@ -156,7 +156,15 @@ class SubConfig(object):
__repr__ = __str__ __repr__ = __str__
def _cfgimpl_get_context(self): def _cfgimpl_get_context(self):
return self._impl_context() """context could be None, we need to test it
context is None only if all reference to `Config` object is deleted
(for example we delete a `Config` and we manipulate a reference to
old `SubConfig`, `Values`, `Multi` or `Settings`)
"""
context = self._impl_context()
if context is None:
raise ConfigError(_('the context does not exist anymore'))
return context
def cfgimpl_get_description(self): def cfgimpl_get_description(self):
if self._impl_descr is None: if self._impl_descr is None:

25
tiramisu/setting.py
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@ -24,7 +24,7 @@ from time import time
from copy import copy from copy import copy
import weakref import weakref
from tiramisu.error import (RequirementError, PropertiesOptionError, from tiramisu.error import (RequirementError, PropertiesOptionError,
ConstError) ConstError, ConfigError)
from tiramisu.i18n import _ from tiramisu.i18n import _
@ -328,6 +328,17 @@ class Settings(object):
self.context = weakref.ref(context) self.context = weakref.ref(context)
self._p_ = storage self._p_ = storage
def _getcontext(self):
"""context could be None, we need to test it
context is None only if all reference to `Config` object is deleted
(for example we delete a `Config` and we manipulate a reference to
old `SubConfig`, `Values`, `Multi` or `Settings`)
"""
context = self.context()
if context is None:
raise ConfigError(_('the context does not exist anymore'))
return context
#____________________________________________________________ #____________________________________________________________
# properties methods # properties methods
def __contains__(self, propname): def __contains__(self, propname):
@ -357,7 +368,7 @@ class Settings(object):
if opt is not None and _path is None: if opt is not None and _path is None:
_path = self._get_path_by_opt(opt) _path = self._get_path_by_opt(opt)
self._p_.reset_properties(_path) self._p_.reset_properties(_path)
self.context().cfgimpl_reset_cache() self._getcontext().cfgimpl_reset_cache()
def _getproperties(self, opt=None, path=None, is_apply_req=True): def _getproperties(self, opt=None, path=None, is_apply_req=True):
if opt is None: if opt is None:
@ -410,7 +421,7 @@ class Settings(object):
self._p_.reset_properties(path) self._p_.reset_properties(path)
else: else:
self._p_.setproperties(path, properties) self._p_.setproperties(path, properties)
self.context().cfgimpl_reset_cache() self._getcontext().cfgimpl_reset_cache()
#____________________________________________________________ #____________________________________________________________
def validate_properties(self, opt_or_descr, is_descr, is_write, path, def validate_properties(self, opt_or_descr, is_descr, is_write, path,
@ -458,7 +469,7 @@ class Settings(object):
properties -= frozenset(('mandatory', 'frozen')) properties -= frozenset(('mandatory', 'frozen'))
else: else:
if 'mandatory' in properties and \ if 'mandatory' in properties and \
not self.context().cfgimpl_get_values()._isempty( not self._getcontext().cfgimpl_get_values()._isempty(
opt_or_descr, value): opt_or_descr, value):
properties.remove('mandatory') properties.remove('mandatory')
if is_write and 'everything_frozen' in self_properties: if is_write and 'everything_frozen' in self_properties:
@ -581,6 +592,7 @@ class Settings(object):
# filters the callbacks # filters the callbacks
calc_properties = set() calc_properties = set()
context = self._getcontext()
for requires in opt._requires: for requires in opt._requires:
for require in requires: for require in requires:
option, expected, action, inverse, \ option, expected, action, inverse, \
@ -592,8 +604,7 @@ class Settings(object):
" '{0}' with requirement on: " " '{0}' with requirement on: "
"'{1}'").format(path, reqpath)) "'{1}'").format(path, reqpath))
try: try:
value = self.context()._getattr(reqpath, value = context._getattr(reqpath, force_permissive=True)
force_permissive=True)
except PropertiesOptionError as err: except PropertiesOptionError as err:
if not transitive: if not transitive:
continue continue
@ -622,7 +633,7 @@ class Settings(object):
:param opt: `Option`'s object :param opt: `Option`'s object
:returns: path :returns: path
""" """
return self.context().cfgimpl_get_description().impl_get_path_by_opt(opt) return self._getcontext().cfgimpl_get_description().impl_get_path_by_opt(opt)
def get_modified_properties(self): def get_modified_properties(self):
return self._p_.get_modified_properties() return self._p_.get_modified_properties()

94
tiramisu/value.py
View File

@ -46,13 +46,24 @@ class Values(object):
# the storage type is dictionary or sqlite3 # the storage type is dictionary or sqlite3
self._p_ = storage self._p_ = storage
def _getcontext(self):
"""context could be None, we need to test it
context is None only if all reference to `Config` object is deleted
(for example we delete a `Config` and we manipulate a reference to
old `SubConfig`, `Values`, `Multi` or `Settings`)
"""
context = self.context()
if context is None:
raise ConfigError(_('the context does not exist anymore'))
return context
def _getdefault(self, opt): def _getdefault(self, opt):
""" """
actually retrieves the default value actually retrieves the default value
:param opt: the `option.Option()` object :param opt: the `option.Option()` object
""" """
meta = self.context().cfgimpl_get_meta() meta = self._getcontext().cfgimpl_get_meta()
if meta is not None: if meta is not None:
value = meta.cfgimpl_get_values()[opt] value = meta.cfgimpl_get_values()[opt]
else: else:
@ -105,11 +116,11 @@ class Values(object):
if path is None: if path is None:
path = self._get_opt_path(opt) path = self._get_opt_path(opt)
if self._p_.hasvalue(path): if self._p_.hasvalue(path):
setting = self.context().cfgimpl_get_settings() context = self._getcontext()
setting = context.cfgimpl_get_settings()
opt.impl_validate(opt.impl_getdefault(), opt.impl_validate(opt.impl_getdefault(),
self.context(), context, 'validator' in setting)
'validator' in setting) context.cfgimpl_reset_cache()
self.context().cfgimpl_reset_cache()
if (opt.impl_is_multi() and if (opt.impl_is_multi() and
opt.impl_get_multitype() == multitypes.master): opt.impl_get_multitype() == multitypes.master):
for slave in opt.impl_get_master_slaves(): for slave in opt.impl_get_master_slaves():
@ -137,7 +148,7 @@ class Values(object):
callback, callback_params = opt._callback callback, callback_params = opt._callback
if callback_params is None: if callback_params is None:
callback_params = {} callback_params = {}
return carry_out_calculation(opt, config=self.context(), return carry_out_calculation(opt, config=self._getcontext(),
callback=callback, callback=callback,
callback_params=callback_params, callback_params=callback_params,
index=index, max_len=max_len) index=index, max_len=max_len)
@ -151,7 +162,7 @@ class Values(object):
if path is None: if path is None:
path = self._get_opt_path(opt) path = self._get_opt_path(opt)
ntime = None ntime = None
setting = self.context().cfgimpl_get_settings() setting = self._getcontext().cfgimpl_get_settings()
if 'cache' in setting and self._p_.hascache(path): if 'cache' in setting and self._p_.hascache(path):
if 'expire' in setting: if 'expire' in setting:
ntime = int(time()) ntime = int(time())
@ -176,7 +187,8 @@ class Values(object):
def _getitem(self, opt, path, validate, force_permissive, force_properties, def _getitem(self, opt, path, validate, force_permissive, force_properties,
validate_properties): validate_properties):
# options with callbacks # options with callbacks
setting = self.context().cfgimpl_get_settings() context = self._getcontext()
setting = context.cfgimpl_get_settings()
is_frozen = 'frozen' in setting[opt] is_frozen = 'frozen' in setting[opt]
# For calculating properties, we need value (ie for mandatory value). # For calculating properties, we need value (ie for mandatory value).
# If value is calculating with a PropertiesOptionError's option # If value is calculating with a PropertiesOptionError's option
@ -196,7 +208,7 @@ class Values(object):
if (opt.impl_is_multi() and if (opt.impl_is_multi() and
opt.impl_get_multitype() == multitypes.slave): opt.impl_get_multitype() == multitypes.slave):
masterp = self._get_opt_path(opt.impl_get_master_slaves()) masterp = self._get_opt_path(opt.impl_get_master_slaves())
mastervalue = getattr(self.context(), masterp) mastervalue = getattr(context, masterp)
lenmaster = len(mastervalue) lenmaster = len(mastervalue)
if lenmaster == 0: if lenmaster == 0:
value = [] value = []
@ -230,7 +242,7 @@ class Values(object):
else: else:
value = self._getvalue(opt, path, validate) value = self._getvalue(opt, path, validate)
if config_error is None and validate: if config_error is None and validate:
opt.impl_validate(value, self.context(), 'validator' in setting) opt.impl_validate(value, context, 'validator' in setting)
if config_error is None and self._is_default_owner(path) and \ if config_error is None and self._is_default_owner(path) and \
'force_store_value' in setting[opt]: 'force_store_value' in setting[opt]:
self.setitem(opt, value, path, is_write=False) self.setitem(opt, value, path, is_write=False)
@ -251,8 +263,9 @@ class Values(object):
# is_write is, for example, used with "force_store_value" # is_write is, for example, used with "force_store_value"
# user didn't change value, so not write # user didn't change value, so not write
# valid opt # valid opt
opt.impl_validate(value, self.context(), context = self._getcontext()
'validator' in self.context().cfgimpl_get_settings()) opt.impl_validate(value, context,
'validator' in context.cfgimpl_get_settings())
if opt.impl_is_multi() and not isinstance(value, Multi): if opt.impl_is_multi() and not isinstance(value, Multi):
value = Multi(value, self.context, opt, path, setitem=True) value = Multi(value, self.context, opt, path, setitem=True)
self._setvalue(opt, path, value, force_permissive=force_permissive, self._setvalue(opt, path, value, force_permissive=force_permissive,
@ -261,14 +274,15 @@ class Values(object):
def _setvalue(self, opt, path, value, force_permissive=False, def _setvalue(self, opt, path, value, force_permissive=False,
force_properties=None, force_properties=None,
is_write=True, validate_properties=True): is_write=True, validate_properties=True):
self.context().cfgimpl_reset_cache() context = self._getcontext()
context.cfgimpl_reset_cache()
if validate_properties: if validate_properties:
setting = self.context().cfgimpl_get_settings() setting = context.cfgimpl_get_settings()
setting.validate_properties(opt, False, is_write, setting.validate_properties(opt, False, is_write,
value=value, path=path, value=value, path=path,
force_permissive=force_permissive, force_permissive=force_permissive,
force_properties=force_properties) force_properties=force_properties)
owner = self.context().cfgimpl_get_settings().getowner() owner = context.cfgimpl_get_settings().getowner()
self._p_.setvalue(path, value, owner) self._p_.setvalue(path, value, owner)
def getowner(self, opt): def getowner(self, opt):
@ -285,7 +299,7 @@ class Values(object):
def _getowner(self, path): def _getowner(self, path):
owner = self._p_.getowner(path, owners.default) owner = self._p_.getowner(path, owners.default)
meta = self.context().cfgimpl_get_meta() meta = self._getcontext().cfgimpl_get_meta()
if owner is owners.default and meta is not None: if owner is owners.default and meta is not None:
owner = meta.cfgimpl_get_values()._getowner(path) owner = meta.cfgimpl_get_values()._getowner(path)
return owner return owner
@ -337,7 +351,7 @@ class Values(object):
:param opt: the `option.Option` object :param opt: the `option.Option` object
:returns: a string with points like "gc.dummy.my_option" :returns: a string with points like "gc.dummy.my_option"
""" """
return self.context().cfgimpl_get_description().impl_get_path_by_opt(opt) return self._getcontext().cfgimpl_get_description().impl_get_path_by_opt(opt)
# information # information
def set_information(self, key, value): def set_information(self, key, value):
@ -402,12 +416,24 @@ class Multi(list):
self._valid_master(value) self._valid_master(value)
super(Multi, self).__init__(value) super(Multi, self).__init__(value)
def _getcontext(self):
"""context could be None, we need to test it
context is None only if all reference to `Config` object is deleted
(for example we delete a `Config` and we manipulate a reference to
old `SubConfig`, `Values`, `Multi` or `Settings`)
"""
context = self.context()
if context is None:
raise ConfigError(_('the context does not exist anymore'))
return context
def _valid_slave(self, value, setitem): def _valid_slave(self, value, setitem):
#if slave, had values until master's one #if slave, had values until master's one
values = self.context().cfgimpl_get_values() context = self._getcontext()
masterp = self.context().cfgimpl_get_description().impl_get_path_by_opt( values = context.cfgimpl_get_values()
masterp = context.cfgimpl_get_description().impl_get_path_by_opt(
self.opt.impl_get_master_slaves()) self.opt.impl_get_master_slaves())
mastervalue = getattr(self.context(), masterp) mastervalue = getattr(context, masterp)
masterlen = len(mastervalue) masterlen = len(mastervalue)
valuelen = len(value) valuelen = len(value)
is_default_owner = not values._is_default_owner(self.path) or setitem is_default_owner = not values._is_default_owner(self.path) or setitem
@ -431,7 +457,7 @@ class Multi(list):
def _valid_master(self, value): def _valid_master(self, value):
masterlen = len(value) masterlen = len(value)
values = self.context().cfgimpl_get_values() values = self._getcontext().cfgimpl_get_values()
for slave in self.opt._master_slaves: for slave in self.opt._master_slaves:
path = values._get_opt_path(slave) path = values._get_opt_path(slave)
if not values._is_default_owner(path): if not values._is_default_owner(path):
@ -458,18 +484,19 @@ class Multi(list):
self._validate(value, index) self._validate(value, index)
#assume not checking mandatory property #assume not checking mandatory property
super(Multi, self).__setitem__(index, value) super(Multi, self).__setitem__(index, value)
self.context().cfgimpl_get_values()._setvalue(self.opt, self.path, self) self._getcontext().cfgimpl_get_values()._setvalue(self.opt, self.path, self)
def append(self, value=undefined, force=False): def append(self, value=undefined, force=False):
"""the list value can be updated (appened) """the list value can be updated (appened)
only if the option is a master only if the option is a master
""" """
context = self._getcontext()
if not force: if not force:
if self.opt.impl_get_multitype() == multitypes.slave: if self.opt.impl_get_multitype() == multitypes.slave:
raise SlaveError(_("cannot append a value on a multi option {0}" raise SlaveError(_("cannot append a value on a multi option {0}"
" which is a slave").format(self.opt._name)) " which is a slave").format(self.opt._name))
elif self.opt.impl_get_multitype() == multitypes.master: elif self.opt.impl_get_multitype() == multitypes.master:
values = self.context().cfgimpl_get_values() values = context.cfgimpl_get_values()
if value is undefined and self.opt.impl_has_callback(): if value is undefined and self.opt.impl_has_callback():
value = values._getcallback_value(self.opt) value = values._getcallback_value(self.opt)
#Force None il return a list #Force None il return a list
@ -480,9 +507,9 @@ class Multi(list):
value = self.opt.impl_getdefault_multi() value = self.opt.impl_getdefault_multi()
self._validate(value, index) self._validate(value, index)
super(Multi, self).append(value) super(Multi, self).append(value)
self.context().cfgimpl_get_values()._setvalue(self.opt, self.path, context.cfgimpl_get_values()._setvalue(self.opt, self.path,
self, self,
validate_properties=not force) validate_properties=not force)
if not force and self.opt.impl_get_multitype() == multitypes.master: if not force and self.opt.impl_get_multitype() == multitypes.master:
for slave in self.opt.impl_get_master_slaves(): for slave in self.opt.impl_get_master_slaves():
path = values._get_opt_path(slave) path = values._get_opt_path(slave)
@ -513,7 +540,7 @@ class Multi(list):
super(Multi, self).sort(key=key, reverse=reverse) super(Multi, self).sort(key=key, reverse=reverse)
else: else:
super(Multi, self).sort(cmp=cmp, key=key, reverse=reverse) super(Multi, self).sort(cmp=cmp, key=key, reverse=reverse)
self.context().cfgimpl_get_values()._setvalue(self.opt, self.path, self) self._getcontext().cfgimpl_get_values()._setvalue(self.opt, self.path, self)
def reverse(self): def reverse(self):
if self.opt.impl_get_multitype() in [multitypes.slave, if self.opt.impl_get_multitype() in [multitypes.slave,
@ -521,7 +548,7 @@ class Multi(list):
raise SlaveError(_("cannot reverse multi option {0} if master or " raise SlaveError(_("cannot reverse multi option {0} if master or "
"slave").format(self.opt._name)) "slave").format(self.opt._name))
super(Multi, self).reverse() super(Multi, self).reverse()
self.context().cfgimpl_get_values()._setvalue(self.opt, self.path, self) self._getcontext().cfgimpl_get_values()._setvalue(self.opt, self.path, self)
def insert(self, index, obj): def insert(self, index, obj):
if self.opt.impl_get_multitype() in [multitypes.slave, if self.opt.impl_get_multitype() in [multitypes.slave,
@ -529,7 +556,7 @@ class Multi(list):
raise SlaveError(_("cannot insert multi option {0} if master or " raise SlaveError(_("cannot insert multi option {0} if master or "
"slave").format(self.opt._name)) "slave").format(self.opt._name))
super(Multi, self).insert(index, obj) super(Multi, self).insert(index, obj)
self.context().cfgimpl_get_values()._setvalue(self.opt, self.path, self) self._getcontext().cfgimpl_get_values()._setvalue(self.opt, self.path, self)
def extend(self, iterable): def extend(self, iterable):
if self.opt.impl_get_multitype() in [multitypes.slave, if self.opt.impl_get_multitype() in [multitypes.slave,
@ -537,12 +564,12 @@ class Multi(list):
raise SlaveError(_("cannot extend multi option {0} if master or " raise SlaveError(_("cannot extend multi option {0} if master or "
"slave").format(self.opt._name)) "slave").format(self.opt._name))
super(Multi, self).extend(iterable) super(Multi, self).extend(iterable)
self.context().cfgimpl_get_values()._setvalue(self.opt, self.path, self) self._getcontext().cfgimpl_get_values()._setvalue(self.opt, self.path, self)
def _validate(self, value, force_index): def _validate(self, value, force_index):
if value is not None: if value is not None:
try: try:
self.opt.impl_validate(value, context=self.context(), self.opt.impl_validate(value, context=self._getcontext(),
force_index=force_index) force_index=force_index)
except ValueError as err: except ValueError as err:
raise ValueError(_("invalid value {0} " raise ValueError(_("invalid value {0} "
@ -560,13 +587,14 @@ class Multi(list):
:type force: boolean :type force: boolean
:returns: item at index :returns: item at index
""" """
context = self._getcontext()
if not force: if not force:
if self.opt.impl_get_multitype() == multitypes.slave: if self.opt.impl_get_multitype() == multitypes.slave:
raise SlaveError(_("cannot pop a value on a multi option {0}" raise SlaveError(_("cannot pop a value on a multi option {0}"
" which is a slave").format(self.opt._name)) " which is a slave").format(self.opt._name))
elif self.opt.impl_get_multitype() == multitypes.master: elif self.opt.impl_get_multitype() == multitypes.master:
for slave in self.opt.impl_get_master_slaves(): for slave in self.opt.impl_get_master_slaves():
values = self.context().cfgimpl_get_values() values = context.cfgimpl_get_values()
if not values.is_default_owner(slave): if not values.is_default_owner(slave):
#get multi without valid properties #get multi without valid properties
values.getitem(slave, values.getitem(slave,
@ -574,5 +602,5 @@ class Multi(list):
).pop(index, force=True) ).pop(index, force=True)
#set value without valid properties #set value without valid properties
ret = super(Multi, self).pop(index) ret = super(Multi, self).pop(index)
self.context().cfgimpl_get_values()._setvalue(self.opt, self.path, self, validate_properties=not force) context.cfgimpl_get_values()._setvalue(self.opt, self.path, self, validate_properties=not force)
return ret return ret