def deserialize_remote_exception(conf, data):
failure = jsonutils.loads(str(data))
trace = failure.get('tb', [])
message = failure.get('message', "") + "\n" + "\n".join(trace)
name = failure.get('class')
module = failure.get('module')
# NOTE(ameade): We DO NOT want to allow just any module to be imported, in
# order to prevent arbitrary code execution.
if not module in conf.allowed_rpc_exception_modules:
return RemoteError(name, failure.get('message'), trace)
try:
mod = importutils.import_module(module)
klass = getattr(mod, name)
if not issubclass(klass, Exception):
raise TypeError("Can only deserialize Exceptions")
failure = klass(**failure.get('kwargs', {}))
except (AttributeError, TypeError, ImportError):
return RemoteError(name, failure.get('message'), trace)
ex_type = type(failure)
str_override = lambda self: message
new_ex_type = type(ex_type.__name__ + "_Remote", (ex_type,),
{'__str__': str_override, '__unicode__': str_override})
try:
# NOTE(ameade): Dynamically create a new exception type and swap it in
# as the new type for the exception. This only works on user defined
# Exceptions and not core python exceptions. This is important because
# we cannot necessarily change an exception message so we must override
# the __str__ method.
failure.__class__ = new_ex_type
except TypeError as e:
# NOTE(ameade): If a core exception then just add the traceback to the
# first exception argument.
failure.args = (message,) + failure.args[1:]
return failure
def _deserialize(data):
"""
Deserialization wrapper
"""
LOG.debug(_("Deserializing: %s"), data)
return jsonutils.loads(data)
def _load_setting_list(data):
global _SETTING_LIST_DICT
try:
_SETTING_LIST_DICT = jsonutils.loads(data)
except ValueError:
raise exception.Invalid()
def load_json(cls, data, default_rule=None):
"""Init a brain using json instead of a rules dictionary."""
rules_dict = jsonutils.loads(data)
return cls(rules=rules_dict, default_rule=default_rule)
def load_json(cls, data, default_rule=None):
"""Init a brain using json instead of a rules dictionary."""
rules_dict = jsonutils.loads(data)
return cls(rules=rules_dict, default_rule=default_rule)
def _load_alarm_content(data):
global _ALARM_CONTENT_DICT
try:
_ALARM_CONTENT_DICT = jsonutils.loads(data)
except ValueError:
raise exception.Invalid()
def _load_setting_list(data):
global _SETTING_LIST_DICT
try:
_SETTING_LIST_DICT = jsonutils.loads(data)
except ValueError:
raise exception.Invalid()
def _deserialize(data):
"""
Deserialization wrapper
"""
LOG.debug(_("Deserializing: %s"), data)
return jsonutils.loads(data)
