46 рядки
1.5 KiB
Python
46 рядки
1.5 KiB
Python
import logging
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try:
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from config import APP_NAME as ROOT_LOGGER_NAME
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except ImportError:
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ROOT_LOGGER_NAME = 'root'
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class common_base(dict):
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DEFAULT_VALUES = {}
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def __init__(self):
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super().__init__(self.DEFAULT_VALUES)
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self['__type__'] = self.__class__.__name__
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#
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self.__callback_list__ = []
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self.logger = logging.getLogger(ROOT_LOGGER_NAME).getChild(__name__)
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def add_callback(self, key, data, callback, on_change_only=True):
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"""
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key: key or None for all keys
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data: data or None for all data
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"""
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cb_tup = (key, data, callback, on_change_only)
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if cb_tup not in self.__callback_list__:
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self.__callback_list__.append(cb_tup)
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def set(self, key, data):
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value_changed = self[key] != data
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self[key] = data
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for cb_key, cb_data, callback, on_change_only in self.__callback_list__:
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if cb_key is None or key == cb_key: # key fits to callback definition
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if cb_data is None or cb_data == self[key]: # data fits to callback definition
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if value_changed or not on_change_only: # change status fits to callback definition
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callback(self, key, self[key])
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class mqtt_base(common_base):
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def __init__(self, mqtt_client, topic):
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super().__init__()
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#
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self.mqtt_client = mqtt_client
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self.topic = topic
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for entry in self.topic.split('/'):
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self.logger = self.logger.getChild(entry)
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