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Code Issues Releases Wiki Activity

Further improve EventHandler <-> EventHandlerBase port situation

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This commit is contained in:
Kristóf Tóth
2019-07-03 16:48:17 +02:00
parent 49844c7b58
commit ca697b41b3
4 changed files with 32 additions and 22 deletions
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13
lib/tfw/event_handlers/event_handler_base.py
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@ -1,10 +1,13 @@
import logging
from abc import ABC, abstractmethod
from typing import Iterable
from tfw.networking import Scope
LOG = logging.getLogger(__name__)
class EventHandlerBase:
class EventHandlerBase(ABC):
"""
Abstract base class for all Python based EventHandlers. Useful implementation template
for other languages.
@ -13,9 +16,9 @@ class EventHandlerBase:
"""
_instances = set()
def __init__(self, key, server_connector, scope):
def __init__(self, key, scope=Scope.ZMQ):
type(self)._instances.add(self)
self.server_connector = server_connector
self.server_connector = self._build_server_connector()
self.scope = scope
self.keys = []
if isinstance(key, str):
@ -26,6 +29,10 @@ class EventHandlerBase:
self.subscribe(*self.keys)
self.server_connector.register_callback(self.event_handler_callback)
@abstractmethod
def _build_server_connector(self):
raise NotImplementedError()
def subscribe(self, *keys):
"""
Subscribe this EventHandler to receive events for given keys.