End-to-end IoT solutions with Java and Eclipse IoT

End-to-end IoT solutions with Java and Eclipse IoT Benjamin Cabé Eclipse Foundation

Java for IoT? 9+ million Java developers Java 8 & embedded are fun Lots of IoT devices running on ARM Tooling

Eclipse IoT A vivid open-source community 13* projects across the whole IoT chain * and counting...

Your typical IoT solution Actuators/Sensors + Gateway + [ Cloud ] + User front-end

1. Sensors / Actuators • Sense the physical environment • Act on it

1. Sensors / Actuators • Sense the physical environment • Act on it Well… that was easy!

1. Sensors / Actuators • Manipulate sysfs directly with the File API • Use Pi4J (hint: ♥︎) to have full support of GPIO/I2C/SPI • Use MIDlets with Java ME embedded

Pi4J – http://pi4j.com • Complete access to GPIOs/I2C/SPI • Very mature codebase, based on WiringPi • Support for popular shields (PiFace, Gertboard, …) • Lots of code samples

Pi4J in action GpioController gpio = GpioFactory.getInstance(); GpioPinDigitalOutput pin = gpio.provisionDigitalOutputPin( RaspiPin.GPIO_01, "MyLED", PinState.HIGH); Thread.sleep(5000); pin.low(); Thread.sleep(5000); pin.toggle(); gpio.shutdown();

2. Gateway Network by Nicholas Menghini from The Noun Project

2. Gateway Connect sensors to the world Network by Nicholas Menghini from The Noun Project

2. Gateway Connect sensors to the world Network by Nicholas Menghini from The Noun Project Manage the hardware and software running at the edge

Connect? CoAP? – « HTTP over UDP » – Expose your device as a resource to the Internet of Things MQTT? – Publish/Subscribe model – More room for local processing

CoAP with Californium CoapServer, CoapResource, CoapExchange 1. Implement custom resources (extend CoapResource) 2. Add resources to the CoAP server 3. Start the server

CoAP with Californium import static org.eclipse.californium.core.coap.CoAP.ResponseCode.*; // shortcuts public class MyResource extends CoapResource { @Override public void handleGET(CoapExchange exchange) { exchange.respond("hello world"); // reply with 2.05 payload (text/plain) } @Override public void handlePOST(CoapExchange exchange) { exchange.accept(); // make it a separate response if (exchange.getRequestOptions() ...) { // do something specific to the request options } exchange.respond(CREATED); // reply with response code only (shortcut) } }

MQTT with Paho MqttClient c = new MqttClient("tcp://m2m.eclipse.org:1883", MqttClient.generateClientId()); mqttClient.setCallback(new MqttCallback() { @Override public void messageArrived(String topic, MqttMessage message) throws Exception { // process received message // ... } }); mqttClient.connect(); mqttClient.subscribe("mygateway/#"); Read more: https://www.eclipse.org/paho/clients/java/

Manage? • Gateway itself – wireless modem, firewall, … • Applications – Install/Uninstall software packages – Start/Stop applications • Sensors – H/W abstraction layer

Eclipse Kura Applications App 1 App 2 . . . . App n Network Configuration Network Management Field Gateway Basic Services Device Abstraction OSGi Application Container Java VM Protocols Connectivity and Delivery Administration GUI Operation & Management Linux Hardware

OSGi with Concierge OSGi? – A dynamic component system for Java – Many standard services • Eventing, configuration management, UPnP, … – A target of choice for modular IoT software Eclipse Concierge provides low footprint implementation (~300-400kb JAR files) http://eclipse.org/concierge

Your typical Kura component • Uses Modbus, CAN-Bus, etc. built-in device abstraction services – Or implement your own service

Your typical Kura component (2) • Uses Kura built-in transport services to talk to the cloud – TransportService – « raw » protocol – DataService – local storage, auto reconnect – CloudService – optimized binary payload, advanced device management

Your typical Kura component (3) • Implements ConfigurableComponent – Enables configuration from the UI – … as well as from the cloud

Your typical Kura component (4) • Bundled with other bundles/components in a deployment package – Zip file containing a Manifest & OSGi bundles • Can be deployed from Kura Web UI or over the air Read more: https://wiki.eclipse.org/Kura/Getting_Started

3. Cloud backend • Allow virtual point-to-point communication between the IoT devices • Provide device management capabilities to manage fleets of devices on the field

MQTT broker with Moquette • Supports QoS 0, 1 and 2 • Aligned with latest MQTT 3.1.1 specification • Ready to be deployed in OSGi containers • WebSockets • Leverages LMAX Disruptor buffer

MQTT broker with Moquette https://code.google.com/p/moquette-mqtt/ Very simple to install: tar zxf distribution-0.6-bundle-tar.tar.gz cd bin ./moquette.sh Note: Moquette has been recently proposed as an Eclipse IoT project

4. End-user interaction Mobile Web Other IoT gadgets: wearables, …

Android Developing for IoT on Android is dead simple – MQTT Android service https://www.eclipse.org/paho/clients/android – Android Wear: you can easily bridge Google Play’s DataLayer to MQTT

Web MQTT over Websockets enables direct MQTT communication from noBackend web-apps – https://www.eclipse.org/paho/clients/js/ Eclipse Ponte is also a good way to bridge MQTT or CoAP to HTTP – https://eclipse.org/ponte

Tooling • Java support in the Eclipse IDE from day 1 • Remote debug • Java 8 (lambdas, …) • OSGi – PDE (Plug-in Development Environment) – Remote OSGi with mToolkit

See you soon! http://www.meetup.com/Virtual-IoT

Thanks! <benjamin@eclipse.org> @kartben http://iot.eclipse.org

Show me the code! Kura OSGi runtime JVM Cloud Service DataService DataTransportService Administration GUI

End-to-end IoT solutions with Java and Eclipse IoT

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