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config.yml

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# HS110 InfluxDB Exporter
This programm is the successor to my old HS110 exporter, written in bash and only capable of one device.
This exporter is rewritten in python and supports multiple plugs. In addition to that, error-handling is improved
The retrieved data is parsed and exported it to the specified influx database.
This script is based on the tplink-smartplug python code to retrieve power data form the TP-Link HS110 Smart-Plug and store it into an influx-database.
https://github.com/softScheck/tplink-smartplug
## Configuration
The configuration data is stored in the `config.yml` file. This file has to be in the same folder as the `scanner.py` script.
### Syntax:
```
influx:
user: "<influx username>"
password: "<influx password>"
ip: "<influx ipor hostname>"
port: <influx port>
db: "<influx database>"
measurement: "<influx measurement name>"
plugs:
- <ip> (Port is always 9999)
...
```
### Create cronjobs
If you execute `./scanner.py`, the script will gather the data and insert it into the database.
To automate this, one option is to use cronjobs.
Open your crontab file in an editor:
```
crontab -e
```
Insert the following lines at the bottom:
```
* * * * * /opt/hs110/hs110-influx/scanner.py >/dev/null 2>&1
* * * * * sleep 30; /opt/hs110/hs110-influx/scanner.py >/dev/null 2>&1
```
This will execute the schript every 30 seconds. You can also change the intervall. For more information on how to adjust cronjobs use `man crontab`
# Dependencies
`pip install pyyaml influxdb`

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#!/usr/bin/env python3
#
# TP-Link Wi-Fi Smart Plug Influx Reader
# For use with TP-Link HS-110
#
# by Dennis Gunia
#
# TpLink Protocol code (reqCmd(), encrypt(), decrpyt()) based on https://github.com/softScheck/tplink-smartplug
# by Lubomir Stroetmann
# Copyright 2016 softScheck GmbH
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
# import libs
import yaml
import socket
import sys
import pytz
import json
from struct import pack
from influxdb import InfluxDBClient
from datetime import datetime
# list of influx data points
points = []
# read config file
with open(r'./config.yml') as file:
config = yaml.load(file, Loader=yaml.FullLoader)
# connect to influxdb
try:
client = InfluxDBClient(host=config['influx']['ip'], port=config['influx']['port'], username=config['influx']['user'], password=config['influx']['password'], database=config['influx']['db'])
client.get_list_database()
except:
exit("Cannot connect to influxdb")
# Encryption and Decryption of TP-Link Smart Home Protocol
# XOR Autokey Cipher with starting key = 171
# Python 3.x Version
if sys.version_info[0] > 2:
def encrypt(string):
key = 171
result = pack('>I', len(string))
for i in string:
a = key ^ ord(i)
key = a
result += bytes([a])
return result
def decrypt(string):
key = 171
result = ""
for i in string:
a = key ^ i
key = i
result += chr(a)
return result
# Python 2.x Version
else:
def encrypt(string):
key = 171
result = pack('>I', len(string))
for i in string:
a = key ^ ord(i)
key = a
result += chr(a)
return result
def decrypt(string):
key = 171
result = ""
for i in string:
a = key ^ ord(i)
key = ord(i)
result += chr(a)
return result
# send command to tplink device
def reqCmd(cmd, ip):
sock_tcp = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock_tcp.settimeout(20)
sock_tcp.connect((ip, 9999))
sock_tcp.settimeout(None)
sock_tcp.send(encrypt(cmd))
data = sock_tcp.recv(2048)
sock_tcp.close()
return json.loads(decrypt(data[4:]))
# read single plug and add to data array
def readPlug(ip):
try:
# create utc timetsamp
dateTimeObj = datetime.now(tz=pytz.utc).isoformat()
# retrieve data from plug
dInfo = reqCmd('{"system":{"get_sysinfo":{}}}', ip)['system']['get_sysinfo']
dData = reqCmd('{"emeter":{"get_realtime":{}}}', ip)['emeter']['get_realtime']
# create point and add to points array
json_body = {
"measurement": config['influx']['measurement'],
"tags": {
"mac": dInfo['mac'],
"alias": dInfo['alias'],
"ip": ip
},
"time": dateTimeObj,
"fields": {
"volts": dData['voltage_mv'],
"amps": dData['current_ma'],
"watts": dData['power_mw'],
"wh": dData['total_wh']
}
}
points.append(json_body)
print("Read plug " + ip )
except socket.error:
print("Could not connect to plug " + ip )
# read all plugs
for deviceIp in config['plugs']:
readPlug(deviceIp)
# write to influxdb
try:
client.write_points(points)
except:
exit("error writing influxdb")
finally:
print("done!")