-
-
Notifications
You must be signed in to change notification settings - Fork 0
/
empro.py
147 lines (133 loc) · 5.18 KB
/
empro.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
import logging
import signal
import struct
import uuid
from time import sleep
import click
from pymodbus.client.sync import ModbusTcpClient
from pymodbus.constants import Endian
from pymodbus.payload import BinaryPayloadDecoder
from prometheus_client import Gauge, Info, start_http_server
from registers import registers
from slugify import Slugify
logger = logging.getLogger(__name__)
class EMproModbusExporter:
def __init__(self, host):
signal.signal(signal.SIGINT, self.exit)
signal.signal(signal.SIGTERM, self.exit)
self.slugify = None
self.stop = False
self.host = host
self.client = None
self.metrics = {}
self.init_prometheus()
self.run()
def init_prometheus(self):
self.slugify = Slugify(to_lower=True)
self.slugify.separator = "_"
self.slugify.pretranslate = {"+": "plus", "-": "minus"}
for n, r in enumerate(registers):
s = self.slugify(f"empro_{r['short_name']}")
registers[n]["slug"] = s
if s in self.metrics:
print(s, r)
if r["datatype"] in [
"uint8",
"uint16",
"sint16",
"uint32",
"sint32",
"fl32",
]:
self.metrics[s] = Gauge(s, r["description"], ["unit", "register"])
else:
self.metrics[s] = Info(s, r["description"], ["register"])
def run(self):
self.client = ModbusTcpClient(self.host)
while not self.stop:
for register in registers:
self.read_register(register)
sleep(1)
def _decode_result(self, register, r):
_register = r["register"]
datatype = r["datatype"]
count = r["count"]
slug = r["slug"]
unit = r["unit"]
name = r["short_name"]
if datatype == "bool":
result = BinaryPayloadDecoder.fromRegisters(
register.registers, Endian.Big, Endian.Little
)
v = bool(result.decode_8bit_uint())
self.metrics[slug].labels(register=_register).info({"name": name, "value": str(v)})
elif datatype == "uint8":
result = BinaryPayloadDecoder.fromRegisters(
register.registers, Endian.Big, Endian.Little
)
v = result.decode_8bit_uint()
self.metrics[slug].labels(unit=unit, register=_register).set(v)
elif datatype == "uint16":
result = BinaryPayloadDecoder.fromRegisters(
register.registers, Endian.Big, Endian.Little
)
v = result.decode_16bit_uint()
self.metrics[slug].labels(unit=unit, register=_register).set(v)
elif datatype == "sint16":
result = BinaryPayloadDecoder.fromRegisters(
register.registers, Endian.Big, Endian.Little
)
v = result.decode_16bit_int()
self.metrics[slug].labels(unit=unit, register=_register).set(v)
elif datatype == "uint32":
result = BinaryPayloadDecoder.fromRegisters(
register.registers, Endian.Big, Endian.Little
)
v = result.decode_32bit_uint()
self.metrics[slug].labels(unit=unit, register=_register).set(v)
elif datatype == "sint32":
result = BinaryPayloadDecoder.fromRegisters(
register.registers, Endian.Big, Endian.Little
)
v = result.decode_32bit_int()
self.metrics[slug].labels(unit=unit, register=_register).set(v)
elif datatype == "fl32":
result = BinaryPayloadDecoder.fromRegisters(
register.registers, Endian.Big, Endian.Little
)
v = result.decode_32bit_float()
self.metrics[slug].labels(unit=unit, register=_register).set(v)
elif datatype == "ascii":
result = BinaryPayloadDecoder.fromRegisters(
[
struct.unpack("<H", struct.pack(">H", r))[0]
for r in register.registers
]
)
v = result.decode_string(count).decode("UTF-8")
self.metrics[slug].labels(register=_register).info({"name": name, "value": str(v)})
elif datatype == "uint8[]":
logger.info("Skip unit8[], not implemented")
elif datatype == "bitmask":
logger.info("Skip bitmask, not implemented")
def read_register(self, register):
try:
if register["rw"] == "w":
logger.info(f"Skip write-only register {register['register']}")
return
result = self.client.read_holding_registers(
register["register"], register["count"]
)
self._decode_result(result, register)
except Exception as e:
logger.error("Error %s reading register %s" % e, register)
def exit(self, signum, frame):
self.stop = True
@click.command()
@click.argument("host", required=True)
@click.option("-m", "--metrics_port", default=9052)
def main(host, metrics_port):
start_http_server(metrics_port)
EMproModbusExporter(host)
if __name__ == "__main__":
main()