go-mqti

mqti

MQTT subscriber that pumps data into InfluxDB.

Pronounced 'm-cutey' :)

How it works

Features

• MQTT 3.1.1 supported, TLS, username/password
• InfluxDB with TLS, username/password
• Consume MQTT messages and inspect (watch) or forward with the following abilities:
  • Filter messages with AND + OR
• Receive MQTT messages and write into InfluxDB, with the following abilities:
  • Add tags based on MQTT fields (when MQTT payload is JSON)
  • Geohash support (applicable when consuming MQTT messages from Owntracks
• Includes docker-compose.yaml to get a full setup up and running!

Configuration

Configuration is handled through a config.yaml file. The following example reads as:

• Setup four workers for incoming MQTT messages
• Consume message from MQTT server tcp://localhost:1883 with the client ID of mqti
• When a MQTT message is consumed from the temperature topic, send write requests to InfluxDB server http://localhost:8086, into the iot database as measurement temperature

---
mqti:
  workers: 4

mqtt:
  host: "localhost"
  port: "1883"
  client_id: "mqti"

influxdb:
  host: "localhost"
  port: "8086"

mappings:
  - mqtt:
      topic: "temperature"
    influxdb:
      database: "iot"
      measurement: "temperature"

Install

go get github.com/ashmckenzie/go-mqti/mqti

or download a release:

github.com/ashmckenzie/go-mqti/releases

Usage

1. Ensure you have a config.yaml setup (see above)

To consume MQTT messages only

1. $GOPATH/bin/mqti watch

To consume MQTT messages and forward to InfluxDB

1. $GOPATH/bin/mqti forward

Trying out with Docker

See the getting started section of a Golang Melbourne presentation for a full demonstration :)

Help

MQTT subscriber that pumps data into InfluxDB

Usage:
  mqti [flags]
  mqti [command]

Available Commands:
  forward     Forward MQTT messages on to InfluxDB
  watch       Watch MQTT messages
  help        Help about any command

Flags:
      --config string   config file (default is config.yaml)
      --debug           enable debugging
  -h, --help            help for mqti
  -v, --version         show version

Use "mqti [command] --help" for more information about a command.

Building

1. make

TODO

• Tests
• Document externals
• Fully document mungers
• Leverage viper's default values

Thanks

• github.com/eclipse/paho.mqtt.golang
• github.com/influxdata/influxdb/client
• github.com/spf13/cobra
• github.com/spf13/viper
• github.com/Sirupsen/logrus

License

MIT License

Copyright (c) 2017 Ash McKenzie

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.