M2M for Java Developers: MQTT with Eclipse Paho - Eclipsecon Europe 2013
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Dominik Obermaier discusses the significance of M2M (Machine to Machine) communication and its role in the Internet of Things (IoT), emphasizing the anticipated growth of connected devices. He advocates for MQTT (Message Queuing Telemetry Transport) as a simple and efficient protocol designed for unreliable networks, highlighting its publish/subscribe model and quality of service features. Obermaier also introduces Eclipse Paho, an open-source implementation of MQTT, focusing on its scalability and various programming language support.
![“Things” in the Internet
2010
2015
2020
~6.909.000.000
~7.302.000.000
~7.675.000.000
[1]
[2]
~12.500.000.000 ~25.000.000.000 ~50.000.000.000
[1]Source: http://www.un.org/esa/population/publications/wpp2008/wpp2008_highlights.pdf
[2]Source: http://share.cisco.com/internet-of-things.html](https://image.slidesharecdn.com/pahoeclipsecon2013vortrag-131031163515-phpapp02/85/M2M-for-Java-Developers-MQTT-with-Eclipse-Paho-Eclipsecon-Europe-2013-7-320.jpg)
M2M for Java Developers: MQTT with Eclipse Paho - Eclipsecon Europe 2013
- 1. M2M for Java Developers MQTT with Eclipse Paho
- 2. Dominik Obermaier @dobermai excited about M2M passionate Architect & Maker loves OSS Co-Founder and CTO at dc-square likes Open Source Hardware
- 3. Dominik Obermaier @dobermai excited about M2M loves OSS passionate Architect & Maker Co-Founder and CTO at dc-square likes Open Source Hardware K Who not?!?
- 4. M2M?
- 5. TECHNOLOGY THA T SUPPORTS WIRED OR WIRELESS COMMUNICA TION BETWEEN DEVICES
- 7. “Things” in the Internet 2010 2015 2020 ~6.909.000.000 ~7.302.000.000 ~7.675.000.000 [1] [2] ~12.500.000.000 ~25.000.000.000 ~50.000.000.000 [1]Source: http://www.un.org/esa/population/publications/wpp2008/wpp2008_highlights.pdf [2]Source: http://share.cisco.com/internet-of-things.html
- 8. “Things” in the Internet People Things 50,000,000,000 37,500,000,000 25,000,000,000 12,500,000,000 0 2010 2015 2020
- 9. “Things” in the Internet People Things 50,000,000,000 37,500,000,000 25,000,000,000 1.8x 12,500,000,000 0 2010 2015 2020
- 10. “Things” in the Internet People Things 50,000,000,000 37,500,000,000 25,000,000,000 1.8x 3.4x 12,500,000,000 0 2010 2015 2020
- 11. “Things” in the Internet People Things 50,000,000,000 6.5x 37,500,000,000 25,000,000,000 1.8x 3.4x 12,500,000,000 0 2010 2015 2020
- 12. Things?
- 22. Screenshot Taken from Oracle JavaOne Strategic Keynote 2013
- 23. IoT
- 24. Which protocol ?
- 25. HTTP? Request / Response Verbose Polling instead of Push No quality of service How to get notified if clients die? Stateless
- 27. Why MQTT? ✓ Simple ✓ Efficient ✓ Publish / Subscribe ✓ Quality of Service Levels ✓ Last Will and Testament ✓ Designed for unreliable networks
- 28. Why MQTT? ✓ Simple ✓ Efficient ✓ Publish / Subscribe ✓ Quality of Service Levels ✓ Last Will and Testament ✓ Designed for unreliable networks K Wireless? Yep, then it probably is unreliable
- 37. Broker Implementations + others Extensive list of brokers available at http://mqtt.org/wiki/doku.php/brokers
- 38. Noooo! Sounds like programming in C!
- 40. Java!
- 42. What is Paho? ✓ Scalable Open Source Implementations of M2M standard protocols ✓ Focus on MQTT ✓ Implementations in Java, Javascript, Lua, C, C++ and Python ✓ Eclipse Incubator
- 43. What is Paho? K Read: What is Paho at the moment ✓ Scalable Open Source Implementations of M2M standard protocols ✓ Focus on MQTT ✓ Implementations in Java, Javascript, Lua, C, C++ and Python ✓ Eclipse Incubator
- 44. Code! public void start() throws Exception { final String clientId = "eclipsecon_sub"; final MqttClient mqttClient = new MqttClient(BROKER_URL, clientId, new MemoryPersistence()); mqttClient.setCallback(new SubscribeCallback(mqttClient)); mqttClient.connect(); mqttClient.subscribe(TOPIC_SUBSCRIPTION, QUALITY_OF_SERVICE_LEVEL); }
- 45. Moar Code! public class SubscribeCallback implements MqttCallback { @Override public void connectionLost(Throwable cause) {} @Override public void deliveryComplete(MqttDeliveryToken token) {} @Override public void messageArrived(MqttTopic topic, MqttMessage message) throws Exception { System.out.println( "Message arrived. Topic: " topic.getName() + ", QoS: " + message.getQos() + ", message: " + new String(message.getPayload(),Charset.forName("UTF-8"))); }
- 46. DEMO!
- 48. Other Eclipse M2M Projects + others
- 49. THANK YOU!
- 50. Credits ✓ Scared Cat Picture by http://www.flickr.com/photos/ dat-pics/ ✓ Thanks Vincent Le Moign for the awesome Icon Set ✓ Rest of pictures licensed from different people from 500px.com ✓ MQTT Logo by http://www.mqtt.org ✓ Paho Logo from http://wiki.eclipse.org/Paho/Branding