Eclipse Democamps 2013 - M2M for Java Developers with MQTT
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I gave this talk at Eclipse Democamp Munich and Stuttgart. This presentation explains the benefits of MQTT, why HTTP isn't enough for the Internet of Things and Machine-to-Machine communication. Last but not least it shows how to use the Eclipse Paho Java library for efficient
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Eclipse Democamps 2013 - M2M for Java Developers with MQTT
- 1. M2M for Java Developers MQTT with Eclipse Paho
- 2. Dominik Obermaier @dobermai excited about M2M passionate Architect & Maker helps standardizing MQTT at OASIS loves OSS Co-Founder and CTO at dc-square HiveMQ architect
- 3. M2M?
- 4. TECHNOLOGY THA T SUPPORTS WIRED OR WIRELESS COMMUNICA TION BETWEEN DEVICES
- 6. “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
- 7. “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
- 8. “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
- 9. “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
- 10. “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
- 11. Which protocol ?
- 12. HTTP? Request / Response Verbose Polling instead of Push No quality of service How to get notified if clients die? Stateless
- 14. Why MQTT? ✓ Simple ✓ Efficient ✓ Publish / Subscribe ✓ Quality of Service Levels ✓ Last Will and Testament ✓ Designed for unreliable networks
- 15. 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
- 16. Google Trends
- 17. History MQTT invented by IBM and Arcom (Eurotech) 1999 royalty free OASIS TC formed 2010 2013 MQTT becomes Standard 2014
- 19. MQTT Topics
- 33. MQTT Topic Level Wilcard +/is/awesome MQTT Bacon looks is fantastic awesome
- 34. MQTT Topic Level Wilcard +/is/awesome MQTT Bacon looks is fantastic awesome
- 35. MQTT Topic Level Wilcard +/is/awesome MQTT Bacon looks is fantastic awesome
- 36. MQTT Topic Level Wilcard +/is/awesome MQTT Bacon looks is fantastic awesome
- 37. MQTT Topic Level Wilcard +/is/awesome MQTT Bacon looks is fantastic awesome
- 38. MQTT Topic Level Wilcard +/is/awesome MQTT Bacon looks is fantastic awesome
- 39. MQTT Topic Level Wilcard +/is/awesome MQTT Bacon looks is fantastic awesome
- 40. MQTT Topic Level Wilcard +/is/+ MQTT Bacon looks is fantastic awesome
- 41. MQTT Topic Level Wilcard +/is/+ MQTT Bacon looks is fantastic awesome
- 42. MQTT Topic Level Wilcard +/is/+ MQTT Bacon looks is fantastic awesome
- 43. MQTT Topic Level Wilcard +/is/+ MQTT Bacon looks is fantastic awesome
- 44. MQTT Topic Level Wilcard +/is/+ MQTT Bacon looks is fantastic awesome
- 45. MQTT Topic Level Wilcard +/is/+ MQTT Bacon looks is fantastic awesome
- 46. MQTT Topic Level Wilcard +/is/+ MQTT Bacon looks is fantastic awesome
- 47. MQTT Topic Level Wilcard +/is/+ MQTT Bacon looks is fantastic awesome
- 74. Broker Implementations + others Extensive list of brokers available at http://mqtt.org/wiki/doku.php/brokers
- 75. OK, got it. How to start hacking?
- 77. 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
- 78. 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
- 79. Java!
- 80. Paho - Java contribution of IBM announced at EclipseCon Europe 11/2011 first version in GIT 03/2012 Release v0.1 11/2012 Release v0.2 04/2013 Release v0.4.0 08/2013
- 81. Code! public void start() throws Exception { final String clientId = "democamp_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); }
- 82. 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"))); }
- 83. DEMO!
- 85. Other Eclipse M2M Projects + others
- 86. THANK YOU!
- 87. Credits ✓ Pictures licensed from different people from 500px.com and depositphotos.com ✓ MQTT Logo by http://www.mqtt.org ✓ Paho Logo from http://wiki.eclipse.org/Paho/Branding