forked from goodboy/tractor
51 lines
1.2 KiB
Python
51 lines
1.2 KiB
Python
|
"""
|
||
|
|
Our classy exception set.
|
||
|
|
"""
|
||
|
|
import builtins
|
||
|
|
import traceback
|
||
|
|
|
||
|
|
|
||
|
|
class RemoteActorError(Exception):
|
||
|
|
# TODO: local recontruction of remote exception deats
|
||
|
|
"Remote actor exception bundled locally"
|
||
|
|
def __init__(self, message, type_str, **msgdata):
|
||
|
|
super().__init__(message)
|
||
|
|
self.type = getattr(builtins, type_str, Exception)
|
||
|
|
self.msgdata = msgdata
|
||
|
|
|
||
|
|
# TODO: a trio.MultiError.catch like context manager
|
||
|
|
# for catching underlying remote errors of a particular type
|
||
|
|
|
||
|
|
|
||
|
|
class InternalActorError(RemoteActorError):
|
||
|
|
"""Remote internal ``tractor`` error indicating
|
||
|
|
failure of some primitive or machinery.
|
||
|
|
"""
|
||
|
|
|
||
|
|
|
||
|
|
class NoResult(RuntimeError):
|
||
|
|
"No final result is expected for this actor"
|
||
|
|
|
||
|
|
|
||
|
|
def pack_error(exc):
|
||
|
|
"""Create an "error message" for tranmission over
|
||
|
|
a channel (aka the wire).
|
||
|
|
"""
|
||
|
|
return {
|
||
|
|
'error': {
|
||
|
|
'tb_str': traceback.format_exc(),
|
||
|
|
'type_str': type(exc).__name__,
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
def unpack_error(msg, chan=None):
|
||
|
|
"""Unpack an 'error' message from the wire
|
||
|
|
into a local ``RemoteActorError``.
|
||
|
|
"""
|
||
|
|
tb_str = msg['error'].get('tb_str', '')
|
||
|
|
return RemoteActorError(
|
||
|
|
f"{chan.uid}\n" + tb_str,
|
||
|
|
**msg['error'],
|
||
|
|
)
|