Messaging is the backbone of many top enterprises. It affords reliable, asynchronous data passing to achieve loosely coupled, highly scalable distributed systems. As enterprises large and small become more interconnected, demand for remote and limited devices to be integrated with enterprise systems is surging. Come see how the most widely used, open-source messaging broker, Apache ActiveMQ, fits nicely and how it supports polyglot messaging.

1. Polyglot messaging with
Apache ActiveMQ
Christian Posta
Principal Consultant and Architect
11/09/13
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2. Agenda
• Polyglot messaging
• Changing landscapes
• Apache ActiveMQ
•
•
•
STOMP
MQTT
Network of Brokers
• Large-scale management
• Questions?
2

3. Your speaker
Christian Posta
Blog: http://christianposta.com/blog
Twitter: @christianposta
Email: christian@redhat.com
ceposta@apache.org
• Principal Consultant and Architect at Red Hat (FuseSource)
• Based in Phoenix, AZ
• Committer on Apache Camel, ActiveMQ, Apollo
• PMC on ActiveMQ
• Author: Essential Camel Components DZone Refcard
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4. Polyglot messaging
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5. Polyglot Messaging?!
adjective: “knowing or using several languages”
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6. Messaging
Message
Broker
P
C
C
Message
C
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7. Integration?
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8. Why is integration hard?
• Off the shelf? Home Grown? Acquisition?
• Platforms
• Protocols / Data Formats
• Data Formats
• Timing
• Organizational mismatch
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9. Integration Options
• Batch file transfers
• Shared Database
• RPC
• Messaging
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10. Why messaging?
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•
•
•
•
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Asynchronous architectures
Reliable message passing
Loose coupling
Heterogeneous integration
Real-time data

11. Changing landscapes
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12. Example of Distributed
Application Integration
Head Office
STORE
Broker
Clusters
24 houra
shop
shop
outlet
STORE
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STORE

13. Ingestion for BigData Architecture
Broker
Cluster
Camel
HTTP Log
Reader
ESB
Web Servers
Camel
HBase/HDFS
Camel
HTTP Log
Reader
Web Servers
Broker
Cluster
Camel
HTTP Log
Reader
Web Servers
Camel
Hbase/HDFS
Camel
HTTP Log
Reader
Web Servers
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ESB
HDFS

14. M2M Deployments
Arrival
Airport 1
Connecting Things
• mobile devices
• meters
• industrial controls
• smart buildings
• asset tracking
• traffic control
• monitors
• sensors
• actuators
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Broker
Clusters

15. Apache ActiveMQ
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16. Apache ActiveMQ
• The most widely used open-source
messaging broker
•
•
•
•
Highly configurable
Friendly license (no license fees!)
Vibrant community (TLP)
Backbone of top enterprises in retail, e-retail,
financial services, shipping, many others!
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17. Broker Architecture
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18. Broker Architecture
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19. Connectivity: Transports
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TCP, NIO
UDP
SSL, SSL+NIO
VM
HTTP
WebSockets

20. Connectivity: Protocols
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•
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•
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OpenWire
STOMP 1.0, 1.1, 1.2
MQTT 3.1
AMQP 1.0

21. STOMP
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22. STOMP – what it is?
• http://stomp.github.com
• Simple Text Orientated Messaging Protocol
• HTTP for the messaging realm

23. STOMP
• “Simple!”
• A lot of “polyglot” APIs
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Ruby - https://rubygems.org/gems/stomp
Python - https://pypi.python.org/pypi/stompy
PHP - http://pecl.php.net/package/stomp
JavaScript - http://jmesnil.net/stomp-websocket/doc/
Perl - http://search.cpan.org/dist/Net-STOMP-Client/
• Implemented
• ActiveMQ
• Apollo
• HornetQ
• RabbitMQ

24. STOMP Connect
CONNECT!
login: ceposta!
passcode: ActiveMQRocks!
!
^@!

25. STOMP Sending
SEND!
destination: /queue/order.books!
reply-to: /tempQueue/Christian!
correlation-id: 900145!
amazonSecurityToken: 1bc2345!
amazonCustomerRating: gold!
!
<order id=“123” customer=“ceposta”>!
<book isbn=“1234” />!
<book isbn=“4567” />!
</order>!
^@!

26. STOMP Subscribe
SUBSCRIBE!
destination: /queue/order.books!
!
^@!

27. Stomp + ActiveMQ
• Available transports
<transportConnectors>
<transportConnector name=”stomp" uri=”stomp://0.0.0.0:61613"/>
<transportConnector name=”stomp+nio" uri=”stomp+nio://0.0.0.0:61614"/>
<transportConnector name=”stomp+ssl" uri=”stomp+ssl://0.0.0.0:61615"/>
<transportConnector name=”stomp+nio+ssl"
uri=”stomp+nio+ssl://0.0.0.0:61615"/>
</transportConnectors>
• NIO implementation for better scalability
• SSL for secure communication

28. MQTT
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29. MQTT
• http://mqtt.org/ - MQ Telemetry Transport
• Developed by IBM for embedded devices telemetry
• IoT (Internet of Things) protocol
• Efficient binary protocol
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30. MQTT Features
• Low bandwidth
• Smallest frame 2 bytes
• Unreliable networks
• Small footprint
• Example frames
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•
•
•
CONNECT
PUBLISH
SUBSCRIBE
PINGREQ/PINGRESP
• DISCONNECT
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31. MQTT
• Publish/subscribe protocol – “topics” “subjects”
• 3 QoS Options:
• At Most Once – message loss might occur
• At Least Once – duplicates might occur
• Exactly Once – guaranteed delivery
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32. MQTT + ActiveMQ
• Available transports
<transportConnectors>
<transportConnector name=”mqtt"
uri=”mqtt://0.0.0.0:1883"/>
<transportConnector name=”mqtt+nio" uri=”mqtt+nio://0.0.0.0:1884"/>
<transportConnector name=”mqtt+ssl" uri=”mqtt+ssl://0.0.0.0:1885"/>
<transportConnector name=”mqtt+nio+ssl"
uri=”mqtt+nio+ssl://0.0.0.0:1886"/>
</transportConnectors>
• NIO implementation for better scalability
• SSL for secure communication
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33. Network of brokers
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34. Store and Forward
Local Broker
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Remote Broker

35. Store and Forward
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36. Store and Forward
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37. Example retail topology
Head Office
STORE
Broker
Clusters
24 houra
shop
shop
outlet
STORE
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STORE

38. Large-scale management
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39. Fuse Fabric
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40. Fuse Fabric
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41. Fuse Fabric
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42. HawtIO
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43. Old Web Console
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44. HawtIO – http://hawt.io
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•
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Manage integration infrastructure from one dashboard
Customizable
Plugins
• Camel
• ActiveMQ
• Fabric
• Infinispan
• Tomcat
• Many others!
Visualizations
One dashboard to rule them all
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45. HawtIO – http://hawt.io
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Visualization of health
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Access to operations to make changes
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Move messages from DLQ to original destinations
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Visualize Camel routes deployed along with broker
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Send messages
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Real-time metrics
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46. 46

47. 47

48. Wrap up
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Checkout the ActiveMQ wiki:
http://activemq.apache.org
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Mailing list:
users@activemq.apache.org
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My Blog:
http://christianposta.com/blog
•
Books:
ActiveMQ in Action – Dejan Bosanac, Rob Davies
Instant ActiveMQ Messaging Application Development – Tim Bish
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49. Questions?
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49

50. Questions?
•
Forums, Mailing list, Stackoverflow
•
ceposta@apache.org
•
christian@redhat.com
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