from typing import Callable from cpl_core.type import T from cpl_reactive_extensions.abc.observer import Observer from cpl_reactive_extensions.subscription import Subscription class Subscriber(Subscription, Observer): def __init__(self, on_next: Callable, on_error: Callable = None, on_complete: Callable = None): Subscription.__init__(self) self._on_next = on_next self._on_error = on_error self._on_complete = on_complete def next(self, value: T): if self._closed: raise Exception("Observer is closed") self._on_next(value) def error(self, ex: Exception): if self._on_error is None: return self._on_error(ex) def complete(self): self._closed = True if self._on_complete is None: return self._on_complete()