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parse_mqtt_dbg.py
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parse_mqtt_dbg.py
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#!/usr/bin/env python3
# SPDX-License-Identifier: MIT
import base64
import json
import re
import sys
from dataclasses import dataclass
from datetime import datetime
from typing import Optional
from zoneinfo import ZoneInfo
from influxdb_client import InfluxDBClient, Point, WritePrecision
from influxdb_client.client.write_api import SYNCHRONOUS
@dataclass
class MessageVoltageReading:
phase: int
voltage: float
frequency_hz: float
offset_degrees: float
unknown_1: int
unknown_2: float
@dataclass
class MessageCurrentReading:
channel: int
current_amps: float
power_watts: [float, float, float]
@dataclass
class Vue2Message:
sensor_id: str
# time the measurement was taken
time: datetime
# the i2c data data packet received from the mcu
raw_data: bytes
voltage_readings: list[MessageVoltageReading]
current_readings: list[MessageCurrentReading]
example_message = """\
id: A2035A04B4B8F009841CC8, t: 1627512531
039952C23E580000ABC5FFFF30F9FFFF
19C4FFFFE3E100002FFDFFFFC5080300
F345FEFFDC9BFFFF52070000EAECFFFF
D6FFFFFF97FCFFFF24060000F5FFFFFF
1B040000DDFFFFFFFAFFFFFFB9E90000
DC53FFFF63ECFFFF4109000084F8FFFF
41FFFFFF830300007705000076FFFFFF
4705000018F9FFFF45FFFFFF6A100000
816000007EFCFFFF4DF402002639FEFF
51A9FFFF833BFFFF85D6020064F8FFFF
09000000AFFDFFFFD0FFFFFF931F0000
53FBFFFF34FEFFFFE3710000E5B6FFFF
07F9FFFF6603000052F3FFFF7FFFFFFF
430D0000E103000041FFFFFF7C220000
A9E1FFFF2BFDFFFF7A14DE158201A701
8E000000FD0093000050500044005100
14016700630058007200035099013200
2D004E003B00450046000000
V1: 120.2, 61.4 Hz, 5242, 0.0229308
V2: 121.8, 120 degrees, 5598, 0.0217630
V3: 8.5, 0 degrees, 386, 0.0220000
I01: 4.6, P[V1]: 94.2, P[V2]: -59.1, P[V3]: -7.0
I02: 2.7, P[V1]: -63.9, P[V2]: 228.8, P[V3]: -2.9
I03: 372.4, P[V1]: 829.1, P[V2]: -447.8, P[V3]: -102.5
I04: 0.4, P[V1]: 2.0, P[V2]: -4.8, P[V3]: -0.0
I05: 0.3, P[V1]: -0.9, P[V2]: 1.6, P[V3]: -0.0
I06: 0.4, P[V1]: 1.1, P[V2]: -0.0, P[V3]: -0.0
I07: 1.3, P[V1]: 62.4, P[V2]: -43.6, P[V3]: -5.0
I08: 0.5, P[V1]: 2.5, P[V2]: -1.9, P[V3]: -0.2
I09: 0.5, P[V1]: 0.9, P[V2]: 1.4, P[V3]: -0.1
I10: 0.4, P[V1]: 1.4, P[V2]: -1.7, P[V3]: -0.2
I11: 0.5, P[V1]: 4.4, P[V2]: 24.4, P[V3]: -0.9
I12: 93.1, P[V1]: 201.8, P[V2]: -115.2, P[V3]: -22.2
I13: 1.9, P[V1]: -52.4, P[V2]: 184.0, P[V3]: -1.9
I14: 0.2, P[V1]: 0.0, P[V2]: -0.6, P[V3]: -0.0
I15: 0.2, P[V1]: 8.4, P[V2]: -1.2, P[V3]: -0.5
I16: 0.4, P[V1]: 30.4, P[V2]: -18.5, P[V3]: -1.8
I17: 0.3, P[V1]: 0.9, P[V2]: -3.2, P[V3]: -0.1
I18: 0.3, P[V1]: 3.5, P[V2]: 1.0, P[V3]: -0.2
I19: 0.3, P[V1]: 9.2, P[V2]: -7.7, P[V3]: -0.7
"""
ID_TIME_REGEX = re.compile(r"id: (?P<id>[A-F0-9]+), t: (?P<time>\d+)",
flags=re.MULTILINE)
RAW_BYTES_REGEX = re.compile(r"^[A-F0-9]{16,}$", flags=re.MULTILINE)
PHASE_1_VOLTS_REGEX = re.compile(
r"V(?P<phase>\d):\s*(?P<voltage>\d+\.\d+), (?P<frequency>\d+\.\d+) Hz, (?P<unk1>\d+), (?P<unk2>\d+\.\d+)",
flags=re.MULTILINE)
PHASES_VOLTS_REGEX = re.compile(
r"V(?P<phase>\d):\s*(?P<voltage>\d+\.\d+), (?P<offset>\d+) degrees, (?P<unk1>\d+), (?P<unk2>\d+\.\d+)",
flags=re.MULTILINE)
CURRENT_REGEX = re.compile(
r"I(?P<ch>\d+):\s*(?P<current>-?\d+\.\d+), P\[V1\]:\s*(?P<pwr1>-?\d+\.\d+), P\[V2\]:\s*(?P<pwr2>-?\d+\.\d+), P\[V3\]:\s*(?P<pwr3>-?\d+\.\d+)",
flags=re.MULTILINE)
def parse_message(msg):
id_and_time = ID_TIME_REGEX.search(msg)
if not id_and_time:
raise ValueError("message missing id and measurement time")
id_ = id_and_time["id"]
time = datetime.fromtimestamp(int(id_and_time["time"]))
raw_data = bytes.fromhex("".join(RAW_BYTES_REGEX.findall(msg)))
voltage_readings = []
for match in PHASE_1_VOLTS_REGEX.finditer(msg):
frequency = float(match["frequency"])
voltage_readings.append(MessageVoltageReading(
phase=int(match["phase"]),
voltage=float(match["voltage"]),
frequency_hz=frequency,
offset_degrees=0.0,
unknown_1=int(match["unk1"]),
unknown_2=float(match["unk2"]),
))
break
else:
raise ValueError("message missing V1 line")
for match in PHASES_VOLTS_REGEX.finditer(msg):
voltage_readings.append(MessageVoltageReading(
phase=int(match["phase"]),
voltage=float(match["voltage"]),
frequency_hz=frequency,
offset_degrees=float(match["offset"]),
unknown_1=int(match["unk1"]),
unknown_2=float(match["unk2"]),
))
current_readings = [MessageCurrentReading(
channel=int(match["ch"]),
current_amps=float(match["current"]),
power_watts=[float(match["pwr1"]), float(match["pwr2"]), float(match["pwr3"])],
) for match in CURRENT_REGEX.finditer(msg)]
return Vue2Message(
id_, time, raw_data, voltage_readings, current_readings
)
@dataclass
class PhaseReading:
phase: int # 1, 2, 3
voltage: float
current: float
power: float
frequency: float
offset: float
@dataclass
class CircuitReading:
channel: int
power: float
current: float
@dataclass
class Vue2Reading:
sensor_id: str
# time the measurement was taken
time: datetime
phases: [PhaseReading, Optional[PhaseReading], Optional[PhaseReading]]
circuits: list[CircuitReading]
@dataclass
class ChannelConfiguration:
channel: int
phase: int
multiplier: float
@dataclass
class Configuration:
enabled_phases: list[int]
channel_config: list[ChannelConfiguration]
def process_message(msg: Vue2Message, conf: Configuration) -> Vue2Reading:
if not conf.enabled_phases:
raise ValueError("Must have at least one phase enabled")
phases = []
for reading in msg.voltage_readings:
if reading.phase not in conf.enabled_phases:
continue
phase_current = next(
filter(lambda v: v.channel == reading.phase, msg.current_readings))
phases.append(PhaseReading(
phase=reading.phase,
voltage=reading.voltage,
frequency=reading.frequency_hz,
offset=reading.offset_degrees,
current=phase_current.current_amps,
power=phase_current.power_watts[reading.phase - 1]
))
circuits = []
for reading in msg.current_readings:
if reading.channel in {1, 2, 3}:
# this is one of the phase current readings
continue
channel_conf = next(
filter(lambda cc: cc.channel == (reading.channel - 3), conf.channel_config))
if not channel_conf:
# this channel isn't in the config, ignore
continue
phase_info = phases[channel_conf.phase - 1]
circuits.append(CircuitReading(
channel=reading.channel - 3,
power=reading.power_watts[phase_info.phase - 1] * channel_conf.multiplier,
current=reading.current_amps * channel_conf.multiplier,
))
return Vue2Reading(
sensor_id=msg.sensor_id,
time=msg.time,
phases=phases,
circuits=circuits
)
def json_serializer(obj):
if isinstance(obj, datetime):
return obj.isoformat()
if isinstance(obj, bytes):
return base64.b64encode(obj).decode('ascii')
return obj.__dict__
def main(args):
if len(args) < 2:
print(f"{args[0]} <mqtt_input> <json_output>")
print("")
print(f" mqtt_input: source of mqtt messages. may be /dev/stdin")
print(f" tip, try mosquitto_sub -h ... -t prod/minions/emporia/ct/v1/.../debug/v2")
return 1
token = "<snip>"
org = "home"
bucket = "home_automation"
client = InfluxDBClient(url="http://localhost:8086", token=token)
write_api = client.write_api(write_options=SYNCHRONOUS)
with open(args[1], 'r') as inf:
message = ''
for line in inf:
message += line
if line == '\n':
parsed_message = parse_message(message)
line = json.dumps(process_message(parsed_message, Configuration(
enabled_phases=[1, 2],
channel_config=[
ChannelConfiguration(channel=1, phase=1, multiplier=1),
ChannelConfiguration(channel=2, phase=2, multiplier=1),
ChannelConfiguration(channel=3, phase=1, multiplier=1),
ChannelConfiguration(channel=4, phase=1, multiplier=1),
ChannelConfiguration(channel=5, phase=1, multiplier=2),
ChannelConfiguration(channel=6, phase=1, multiplier=2),
ChannelConfiguration(channel=7, phase=1, multiplier=2),
ChannelConfiguration(channel=8, phase=2, multiplier=1),
ChannelConfiguration(channel=9, phase=2, multiplier=1),
ChannelConfiguration(channel=10, phase=2, multiplier=1),
ChannelConfiguration(channel=11, phase=1, multiplier=2),
ChannelConfiguration(channel=12, phase=1, multiplier=2),
ChannelConfiguration(channel=13, phase=1, multiplier=1),
ChannelConfiguration(channel=14, phase=1, multiplier=1),
ChannelConfiguration(channel=15, phase=2, multiplier=1),
ChannelConfiguration(channel=16, phase=1, multiplier=1),
]
)), default=json_serializer)
message = ''
batch = []
data = json.loads(line)
timestamp = int(datetime.fromisoformat(data["time"]).replace(tzinfo=ZoneInfo("America/New_York")).timestamp()) * 1000000000
for phase in data['phases']:
batch.append(f"home_power,phase={phase['phase']} current={phase['current']},power={phase['power']},voltage={phase['voltage']},frequency={phase['frequency']} {timestamp}")
for circuit in data['circuits']:
batch.append(f"home_power,circuit={circuit['channel']} current={circuit['current']},power={circuit['power']} {timestamp}")
write_api.write(bucket, org, batch)
print("\n".join(batch))
if __name__ == '__main__':
sys.exit(main(sys.argv))
# https://discord.com/channels/330944238910963714/554842238073700352/870152674660737035;