def _check_for_path_errors(self, pointer):
if not re.match(self.PATH_REGEX_COMPILED, pointer):
msg = _("Json path should start with a '/', "
"end with no '/', no 2 subsequent '/' are allowed.")
raise exc.InvalidJsonPatchPath(path=pointer, explanation=msg)
if re.search('~[^01]', pointer) or pointer.endswith('~'):
msg = _("Pointer contains '~' which is not part of"
" a recognized escape sequence [~0, ~1].")
raise exc.InvalidJsonPatchPath(path=pointer, explanation=msg)
def wrap_property(prop_value, full_path):
if isinstance(prop_value, list):
return ArtifactListPropertyProxy(prop_value, full_path)
if isinstance(prop_value, dict):
return ArtifactDictPropertyProxy(prop_value, full_path)
# no other types are supported
raise exc.InvalidJsonPatchPath(path=full_path)
def _proc_key(self, idx_str, should_exist=True):
"""JsonPatchUpdateMixin method overload.
Only integers less than current array length and '-' (last elem)
in path are allowed.
Raises an InvalidJsonPatchPath exception if any of the conditions above
are not met.
"""
if idx_str == '-':
return len(self) - 1
try:
idx = int(idx_str)
if not should_exist and len(self) == 0:
return 0
if len(self) < idx + 1:
msg = _("Array has no element at position %d") % idx
raise exc.InvalidJsonPatchPath(explanation=msg, path=idx)
return idx
except (ValueError, TypeError):
msg = _("Not an array idx '%s'") % idx_str
raise exc.InvalidJsonPatchPath(explanation=msg, path=idx_str)
def _perform_op(self, op, **kwargs):
path = kwargs.get("path")
value = kwargs.get("value")
prop_name, delimiter, path_left = path.lstrip('/').partition('/')
if not path_left:
return setattr(self, prop_name, value)
try:
prop = self._get_prop_to_update(prop_name, path_left)
# correct path_left and call corresponding update method
kwargs["path"] = path_left
getattr(prop, op)(path=kwargs["path"], value=kwargs.get("value"))
return setattr(self, prop_name, prop)
except exc.InvalidJsonPatchPath:
# NOTE(ivasilevskaya): here exception is reraised with
# 'part of path' substituted with with 'full path' to form a
# more relevant message
raise exc.InvalidJsonPatchPath(
path=path, explanation=_("No property to access"))
def _proc_key(self, key_str, should_exist=True):
"""JsonPatchUpdateMixin method overload"""
if should_exist and key_str not in self.keys():
msg = _("No such key '%s' in a dict") % key_str
raise exc.InvalidJsonPatchPath(path=key_str, explanation=msg)
return key_str
