85 lines
3.4 KiB
Python
85 lines
3.4 KiB
Python
""" SEP protocol parser
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"""
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import datetime
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import json
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def parse_sep(topic, payload_str):
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"""
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Credit to https://gist.github.com/ndfred/b373eeafc4f5b0870c1b8857041289a9
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:param topic: str Topic SEP payload was received from
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:param payload_str: str SEP payload message as a string
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:return:
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"""
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payload = json.loads(payload_str)
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timestamp = datetime.datetime.fromtimestamp(payload["gmtime"], tz=datetime.timezone.utc)
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electricity_consumption = int(payload["elecMtr"]["0702"]["04"]["00"], 16)
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electricity_daily_consumption = int(payload["elecMtr"]["0702"]["04"]["01"], 16)
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electricity_weekly_consumption = int(payload["elecMtr"]["0702"]["04"]["30"], 16)
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electricity_monthly_consumption = int(payload["elecMtr"]["0702"]["04"]["40"], 16)
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electricity_multiplier = int(payload["elecMtr"]["0702"]["03"]["01"], 16)
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electricity_divisor = int(payload["elecMtr"]["0702"]["03"]["02"], 16)
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electricity_meter = int(payload["elecMtr"]["0702"]["00"]["00"], 16)
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electricity_mpan = payload["elecMtr"]["0702"]["03"]["07"]
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gas_daily_consumption = int(payload["gasMtr"]["0702"]["0C"]["01"], 16)
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gas_weekly_consumption = int(payload["gasMtr"]["0702"]["0C"]["30"], 16)
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gas_monthly_consumption = int(payload["gasMtr"]["0702"]["0C"]["40"], 16)
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gas_multiplier = int(payload["gasMtr"]["0702"]["03"]["01"], 16)
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gas_divisor = int(payload["gasMtr"]["0702"]["03"]["02"], 16)
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gas_meter = int(payload["gasMtr"]["0702"]["00"]["00"], 16)
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gas_mpan = payload["gasMtr"]["0702"]["03"]["07"]
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device_gid = payload["gid"]
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assert(int(payload["elecMtr"]["0702"]["03"]["00"], 16) == 0) # kWh
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assert(int(payload["gasMtr"]["0702"]["03"]["01"], 16) == 1) # m3
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assert(int(payload["gasMtr"]["0702"]["03"]["12"], 16) == 0) # kWh
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data = {
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'timestamp': timestamp,
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'tags': {
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'topic': topic,
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'gid': device_gid,
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},
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'electricity': {
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'tags': {
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'mpan': electricity_mpan,
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},
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'metrics': {
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'draw': electricity_consumption * electricity_multiplier / electricity_divisor,
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'consumption_daily': electricity_daily_consumption * electricity_multiplier / electricity_divisor,
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'consumption_weekly': electricity_weekly_consumption * electricity_multiplier / electricity_divisor,
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'consumption_monthly': electricity_monthly_consumption * electricity_multiplier / electricity_divisor,
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'meter_reading': electricity_meter * electricity_multiplier / electricity_divisor,
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},
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},
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'gas': {
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'tags': {
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'mpan': gas_mpan,
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},
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'metrics': {
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'consumption_daily': gas_daily_consumption * gas_multiplier / gas_divisor,
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'consumption_weekly': gas_weekly_consumption * gas_multiplier / gas_divisor,
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'consumption_monthly': gas_monthly_consumption * gas_multiplier / gas_divisor,
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'meter_reading': gas_meter * gas_multiplier / gas_divisor,
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},
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},
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}
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return data
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def usage_to_datapoints(usage):
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datapoints = []
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for utility in ['electricity', 'gas']:
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datapoints.append({
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"measurement": utility,
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"tags": {**usage['tags'], **usage[utility]['tags']},
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"time": usage['timestamp'].isoformat(),
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"fields": usage[utility]['metrics'],
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})
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return datapoints
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