Benjamin Cabé Eclipse Foundation

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

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

IOT

IOT

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

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

Network by Nicholas Menghini from The Noun Project

Connect sensors to the world

2. Gateway

Network by Nicholas Menghini from The Noun Project

Connect sensors to the world

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

Java VM

OSGi Application Container

Device Abstraction

Gateway Basic Services

Network Configuration Network Management Field

Protocols

Connectivity and Delivery

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App 1 App 2 App n . . . .

Applications

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

Eclipse Kura

Eclipse Kura

Eclipse Kura

Eclipse Kura

Eclipse Kura

Eclipse Kura

Eclipse Kura

Eclipse Kura

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

Moaaar Eclipse IoT and Java!

See you soon!

See you soon!

http://www.meetup.com/Virtual-IoT

Thanks! <benjamin@eclipse.org>

@kartben

http://iot.eclipse.org

Show me the code!

JVM

OSGi runtime

Kura

DataTransportService

DataService

Cloud Service

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