Devoxx 2015 - Building the Internet of Things with Eclipse IoT

Building the
Internet of Things
with Eclipse IoT
Benjamin Cabé – Eclipse Foundation
@kartben
Devoxx France - April 10, 2015

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

Talking to sensors?
● 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

Talking to sensors?
Gp o on o e p o = Gp oFa o . e Ins an e();
Gp oP nD a Ou pu p n = p o.p o s onD a Ou pu P n(
Rasp P n.GPIO_01, "M LED", P nS a e.HIGH);
Th ead.s eep(5000);
p n. ow();
Th ead.s eep(5000);
p n. o e();
p o.shu down();

Gateway
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: The web-of-things
/walk
/hand/left/raise
/eye/picture
/on
/red
/green
/blue
/mtbf
/on
/on
/buttons
/buttons/1/push
/bat-level
/engine/status
/position
/fuel
/CO2
/noise
/lights/on

Eclipse Californium
● Focus on scalability and usability
● To be used in IoT cloud servers or M2M/IoT
devices running Java
● Includes DTLS implementation (Scandium),
HTTP/CoAP bridge, Plugtests, …
http://eclipse.org/californium

import static org.eclipse.californium.core.coap.CoAP.ResponseCode.*;
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: Publish & Subscribe
Sub
KETTLE232/#Pub
KETTLE232/temp
Payload:
21°C
Pub
KETTLE232/temp
Payload:
21°C
BROKER

Eclipse Paho
● Open-source MQTT clients
● Pick your language!
○ Java
○ JavaScript
○ C/C++, Objective C
○ Go, Lua, Python, .NET, WinRT, …
http://eclipse.org/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/#");

MQTT brokers
● Eclipse Mosquitto
○ C implementation
○ Scalable (1000 clients == 3MB RAM)
● Eclipse Moquette
○ Java implementation
○ Based on Netty and LMAX disruptor

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

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

Installing Kura
cd ~
sudo apt-get update
wget https://s3.amazonaws.com/kura_downloads/raspbian/release/
1.1.0/kura_1.1.0_raspberry-pi_armv6.deb
sudo dpkg -i kura_1.1.0_raspberry-pi_armv6.deb
sudo apt-get install -f
sudo reboot

First steps with Kura
● Network management
○ Cellular Modem, WiFi
○ Firewall
○ NAT
● OSGi and system administration
● IoT server communication settings

Kura API
● OSGi services that you can re-use in your own
components
○ o Se e
○ Da aSe e, oudSe e
○ p oSe e (AES, base64, SHA-1)
○ Pos onSe e (geolocation)
○ … and many others
● And of course you can leverage a huge
ecosystem of Java and OSGi libraries

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

• Implements ConfigurableComponent
– Enables configuration from the UI
– … as well as from the cloud

• 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:
http://eclipse.github.io/kura/doc/kura-setup

End-user interaction
● JavaFX Charts
● Eclipse BIRT
● Smartphone app (e.g Android)
○ https://www.eclipse.org/paho/clients/android
● MQTT + WebSockets = ♡
○ https://www.eclipse.org/paho/clients/js

Kura is awesome!
Go download it now!
http://eclipse.org/kura
If you had to remember only 3 things...
#1

Build your own greenhouse &
follow the tutorial
http://iot.eclipse.org/java/tutorial
#2

Eclipse IoT is much more than
Kura and Java!
http://iot.eclipse.org/
#3

Get Involved!
● Open bugs / fix bugs
● Request new features
● Write articles, tutorials
● Participate on the mailing
lists
● Propose your project!

Coming next?
● Device Management
○ LwM2M, LwM2M over MQTT, IPSO Smart Objects
● Security
○ TinyDTLS
● Open-source IoT server?
○ Several members interested in defining and
implementing the OpenStack for IoT

Thank you! Questions?
benjamin@eclipse.org
@kartben
http://iot.eclipse.org

Devoxx 2015 - Building the Internet of Things with Eclipse IoT

Empfohlen

Empfohlen

Weitere ähnliche Inhalte

Was ist angesagt?

Was ist angesagt? (20)

Andere mochten auch

Andere mochten auch (20)

Ähnlich wie Devoxx 2015 - Building the Internet of Things with Eclipse IoT

Ähnlich wie Devoxx 2015 - Building the Internet of Things with Eclipse IoT (20)

Mehr von Benjamin Cabé

Mehr von Benjamin Cabé (20)

Kürzlich hochgeladen

Kürzlich hochgeladen (20)

Devoxx 2015 - Building the Internet of Things with Eclipse IoT