56 lines
1.3 KiB
Python
56 lines
1.3 KiB
Python
class BaseMiddleware:
|
|
"""
|
|
Base class for middleware.
|
|
Your middlewares should be inherited from this class.
|
|
"""
|
|
|
|
def __init__(self):
|
|
pass
|
|
|
|
async def pre_process(self, message, data):
|
|
raise NotImplementedError
|
|
|
|
async def post_process(self, message, data, exception):
|
|
raise NotImplementedError
|
|
|
|
|
|
class State:
|
|
def __init__(self) -> None:
|
|
self.name = None
|
|
|
|
def __str__(self) -> str:
|
|
return self.name
|
|
|
|
|
|
class StatesGroup:
|
|
def __init_subclass__(cls) -> None:
|
|
# print all variables of a subclass
|
|
for name, value in cls.__dict__.items():
|
|
if not name.startswith('__') and not callable(value) and isinstance(value, State):
|
|
# change value of that variable
|
|
value.name = ':'.join((cls.__name__, name))
|
|
|
|
|
|
class SkipHandler:
|
|
"""
|
|
Class for skipping handlers.
|
|
Just return instance of this class
|
|
in middleware to skip handler.
|
|
Update will go to post_process,
|
|
but will skip execution of handler.
|
|
"""
|
|
|
|
def __init__(self) -> None:
|
|
pass
|
|
|
|
class CancelUpdate:
|
|
"""
|
|
Class for canceling updates.
|
|
Just return instance of this class
|
|
in middleware to skip update.
|
|
Update will skip handler and execution
|
|
of post_process in middlewares.
|
|
"""
|
|
|
|
def __init__(self) -> None:
|
|
pass |