# 3-td party libraries
from paho.mqtt.client import Client, MQTTMessage
# Project modules
from adapters import MQTTBrokerAdapter
from storage import MongoDBStorageAdapter
from utils.normalizers import DefaultNormalizer
from config.utils import get_project_config
# Logging section
from utils.logs.tools import get_child_logger_by_name
logger = get_child_logger_by_name(__name__)
# Project configuration
DEFAULT_CONFIG = get_project_config()
# Default topics to subscribe
TOPICS = [
"/clients",
"/messages/#",
]
class DataBroker:
""" Class DataBroker
This class is to encapsulate possible manipulations on data received from MQTT Message Broker and to specify
callback function for registered get_topics.
The class aggregate *MQTTBrokerAdapter* and *MongoDBStorageAdapter*.
import dateutil.parser
import datetime
# Project modules
from config.utils import get_project_config
from utils.validators import VALIDATOR_MAPPING, VALIDATOR_MESSAGE_TYPES
from utils.tools import DateTimeDecoder
# Logging section
from utils.logs.tools import get_child_logger_by_name
logger = get_child_logger_by_name(__name__)
# Project configuration
CONFIG = get_project_config()
# Currently, allow only strings to be normalized
ALLOWED_OBJECT_TYPES = (str, dict, bytes)
class DefaultNormalizer:
"""
Class DefaultNormalizer
Transforms serialized object into Python-comparable JSON object and check the validity of JSON scheme.
Definitions
=====
In Python a JSON object is presented as dictionary, so, let me call this as **JSON Python dictionary**
"""