iEmu - IoT Device Emulator

Emulator application for an IoT device.

Features

1. LwM2M protocol support for objects:
   • LwM2M Server (1),
   • Device (3),
   • Firmware Update (5),
   • Light Control (3311).
2. HTTP UI for device management (REST API and Angular UI).
3. Docker build.

Running

1. Run LwM2M server (consider Leshan Demo Server from official repository or check here on how to use with Docker).
2. Set appropriate configuration in data/config.yml. See also chapter about configuration profiles.
3. Build project with ./gradlew build and run java -jar build/libs/iemu-*.jar. The application will load configuration from data/config.yml file.
4. Browse client UI or check in your LwM2M server if the client is connected.

Configuration Profiles

It's possible to define multiple .yml files within data/ directory and control profile name with --{profile} program argument.

Consider following configuration files:

$ tree data/
data
├── config-qa.yml
├── config-prod.yml
└── config.yml

Then selecting profile name looks following:

config file	java exec
config.yml	java -jar build/libs/iemu-*.jar
config-qa.yml	java -jar build/libs/iemu-*.jar --qa
config-prod.yml	java -jar build/libs/iemu-*.jar --prod

Application

Application has just one view, displaying (refreshing automatically thanks to websocket connection) management UI for the device.

Technologies

• Javalin
• Leshan
• Angular
• Docker