mirror of
https://github.com/thingsboard/thingsboard-gateway
synced 2025-10-26 22:31:42 +08:00
66 lines
3.6 KiB
Python
66 lines
3.6 KiB
Python
# Copyright 2020. ThingsBoard
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# #
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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# #
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# http://www.apache.org/licenses/LICENSE-2.0
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# #
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from simplejson import dumps
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import struct
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from thingsboard_gateway.tb_utility.tb_utility import TBUtility
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from thingsboard_gateway.connectors.request.request_converter import RequestConverter, log
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class CustomRequestUplinkConverter(RequestConverter):
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def __init__(self, config):
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self.__config = config.get('converter')
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self.dict_result = {}
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def convert(self, _, body):
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try:
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data = body["data"]["value"]
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self.dict_result["deviceName"] = TBUtility.get_value(self.__config.get("deviceNameJsonExpression"), body, expression_instead_none=True)
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self.dict_result["deviceType"] = TBUtility.get_value(self.__config.get("deviceTypeJsonExpression"), body, expression_instead_none=True)
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self.dict_result["attributes"] = []
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self.dict_result["telemetry"] = []
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converted_bytes = bytearray.fromhex(data)
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if self.__config.get("extension-config") is not None:
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for telemetry_key in self.__config["extension-config"]:
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value = None
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byteorder = telemetry_key.get("byteorder", "big").lower()
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signed = telemetry_key.get("signed", True)
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if telemetry_key.get("byteAddress") is None:
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interest_bytes = converted_bytes[telemetry_key["fromByte"]: telemetry_key["toByte"]]
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if telemetry_key["type"] == "float":
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value = struct.unpack(">f" if byteorder == "big" else "<f", interest_bytes)
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if value:
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value = value[0]
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if telemetry_key["type"] == "int":
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value = int.from_bytes(interest_bytes, byteorder=byteorder, signed=signed)
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else:
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interest_byte = converted_bytes[telemetry_key["byteAddress"]]
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bits = "{0:{fill}8b}".format(interest_byte, fill='0')
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bits = bits if byteorder == "big" else bits[::-1]
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value = int(bits[::-1][telemetry_key.get("fromBit"):telemetry_key.get("toBit")][::-1], 2)
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if value is not None:
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value = value * telemetry_key.get("multiplier", 1)
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telemetry_to_send = {
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telemetry_key["key"]: value} # creating telemetry data for sending into Thingsboard
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# current_byte_position += self.__config["extension-config"][telemetry_key]
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self.dict_result["telemetry"].append(telemetry_to_send) # adding data to telemetry array
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else:
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self.dict_result["telemetry"] = {
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"data": int(body, 0)} # if no specific configuration in config file - just send data which received
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return self.dict_result
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except Exception as e:
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log.error('Error in converter, for config: \n%s\n and message: \n%s\n', dumps(self.__config), body)
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log.exception(e)
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