I2T Streams MQTT Gateway

Preparation

Install rust if you don't have it already, find the instructions here https://www.rust-lang.org/tools/install

Make sure you also have the build dependencies installed, if not run:
sudo apt install build-essential
sudo apt install pkg-config
sudo apt install libssl-dev
sudo apt install cmake
sudo apt update

Installing the MQTT broker

In case you don't have a MQTT broker running yet, you can run one locally with Mosquitto:
sudo apt install mosquitto

If you don't want to set authentication for users run:
mosquitto

To enable authentication through usernames and passwords, follow the steps in this guide

Installing the streams-mqtt-gateway

Download the Repository:

git clone https://github.com/iot2tangle/streams-mqtt-gateway.git

Configure the streams-gateway:

nano config.json

Set the whitelisted_device_ids to include all the device IDs specified in their respective configuration files.
Leave username, password empty ("") if your borker does not require authentication.
Set the username, password if you are connecting to an authenticaded broker.
Set the borker_ip, broker_port to match the location on the broker, (default MQTT port is 1883).
Change topic, node, mwm, local_pow if needed

Runnig the Gateway:

Run the streams-gateway:

cargo run --release

This starts the server which will forward messages from the devices to the Tangle

The Output will be something like this:

>> Starting....
>> Channel root: "47d504e1a825e142dd899dda81ff787c7cfad3b83977feec3545eaef4315c8a50000000000000000:fd93e57d937910f429cdd211"

>> To read the messages copy the channel root into https://explorer.iot2tangle.io/

>> Listening for topic iot2tangle on http://localhost:1883

To send data to the server you can use cURL, make sure the ip and port are the same as in the config.json file, and that they point to the broker:
mosquitto_pub -h localhost -p 1883 -u -P -t "iot2tangle" -m '{ "iot2tangle": [ { "sensor": "Gyroscope", "data": [ { "x": "4514" }, { "y": "244" }, { "z": "-1830" } ] }, { "sensor": "Acoustic", "data": [ { "mp": "1" } ] } ], "device": "DEVICE_ID_1", "timestamp": "" }'
Set values for -u -P to spsecify the username and the password for an authenticated broker