Enterprise Messaging with Apache ActiveMQ

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elliando dias

Technology

Enterprise Messaging with
Apache ActiveMQ

James Strachan
http://macstrac.blogspot.com/

http://open.iona.com/

What is Apache ActiveMQ

http://activemq.apache.org/

Clients

C Java Pike

C++ JavaScript Python

C#/.NET Perl Ruby

Flash PHP Smalltalk

Selectors

• Provide content based ﬁltering on messages using SQL 92 syntax

• Customer = ‘gold’ and product in (1, 2, 3) and JMSPriority > 5

• Supports XPath on the message body for XML messages

Wildcards

•Products.Books.Computing.EIP

•Products.Books.Computing.*

•Products.>

URIs

<protocol>://<host>:<port>?<transport-options>

Examples

tcp://localhost:61616

vm://localhost?broker.persistent=false

Failover

failover:(tcp://host1:61616,tcp://host2:61616)?initialReconnectDelay=100

Wire Formats

•OpenWire

•STOMP

•HTTP / REST

Wire Formats: OpenWire

•binary

•small and fast

•code generated marshalling in C, C++, C# and Java

•a fair amount of work to port to other languages

Wire Formats: STOMP

• text based for the headers like HTTP

• very easy to create a client in any language

• tons of clients in most popular programming languages

Stomp : Connecting

CONNECT

login:<username>

passcode:<passcode>

^@

Stomp : Sending

SEND
destination:/queue/orders.books
reply-to:/temporaryQueue/James
correlation-id:4324234
amazonSecurityToken:abc234
amazonCustomerRating:gold

<order id=“123” customer=“jstrachan”>
<book isin=“1234”/>
<book isin=“456”/>
</order>
^@

Stomp: Subscribe

SUBSCRIBE
destination:/queue/orders.books

^@

Stomp : Receive messages

MESSAGE
destination:/queue/orders.books
Message-id:abc123
reply-to:/temporaryQueue/james134

This is the message
^@

Clustering with Master / Slave

•Pure

•Shared File System

•Shared Database

Easy Unit Testing of JMS code

ConnectionFactory factory =

new ActiveMQConnectionFactory(“vm://localhost?broker.persistent=false”);

Prefetch

new ActiveMQQueue("TEST.QUEUE?consumer.prefetchSize=10");

Consumer Priority

new ActiveMQQueue("TEST.QUEUE?consumer.priority=10");

Enterprise Integration Patterns via Camel
http://activemq.apache.org/camel/

Bridge to other protocols

http://activemq.apache.org/camel/components.html

activemq ibatis mail rmi udp

activemq.journal imap mina rnc validation

bean irc mock rng velocity

cxf jdbc msv seda vm

direct jetty multicast sftp xmpp

event jbi pojo smtp xquery

ﬁle jms pop string-template xslt

ftp jpa quartz timer webdav

http log queue tcp

Example

<camelContext xmlns="http://activemq.apache.org/camel/schema/spring">
<route>
<from uri="file://quotes"/>
<filter>
<xpath>/quote/product = ‘widget’</xpath>
<to uri="activemq:WidgetQuotes"/>
</filter>
</route>
</camelContext>

Where do I get more info?

http://activemq.apache.org/

James Strachan

blog

http://macstrac.blogspot.com/

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Enterprise Messaging with Apache ActiveMQ

1. Enterprise Messaging with Apache ActiveMQ James Strachan http://macstrac.blogspot.com/ http://open.iona.com/

2. What is messaging?

3. Messaging 101

4. Topics

5. Queues

6. What is Apache ActiveMQ?

7. What is Apache ActiveMQ http://activemq.apache.org/

8. Clients C Java Pike C++ JavaScript Python C#/.NET Perl Ruby Flash PHP Smalltalk

9. Selectors • Provide content based ﬁltering on messages using SQL 92 syntax • Customer = ‘gold’ and product in (1, 2, 3) and JMSPriority > 5 • Supports XPath on the message body for XML messages

10. Wildcards •Products.Books.Computing.EIP •Products.Books.Computing.* •Products.>

11. Broker Architecture

12. Message Persistence

13. Security

14. Transports

15. URIs <protocol>://<host>:<port>?<transport-options> Examples tcp://localhost:61616 vm://localhost?broker.persistent=false

16. Failover failover:(tcp://host1:61616,tcp://host2:61616)?initialReconnectDelay=100

17. Wire Formats •OpenWire •STOMP •HTTP / REST

18. Wire Formats: OpenWire •binary •small and fast •code generated marshalling in C, C++, C# and Java •a fair amount of work to port to other languages

19. Wire Formats: STOMP • text based for the headers like HTTP • very easy to create a client in any language • tons of clients in most popular programming languages

20. Stomp : Connecting CONNECT login:<username> passcode:<passcode> ^@

21. Stomp : Sending SEND destination:/queue/orders.books reply-to:/temporaryQueue/James correlation-id:4324234 amazonSecurityToken:abc234 amazonCustomerRating:gold <order id=“123” customer=“jstrachan”> <book isin=“1234”/> <book isin=“456”/> </order> ^@

22. Stomp: Subscribe SUBSCRIBE destination:/queue/orders.books ^@

23. Stomp : Receive messages MESSAGE destination:/queue/orders.books Message-id:abc123 reply-to:/temporaryQueue/james134 This is the message ^@

24. Broker Architecture

25. Types of connectors

26. Kinds of topology

27. Kinds of topology

28. Kinds of topology

29. Clustering with Master / Slave •Pure •Shared File System •Shared Database

30. Cool Stuff!

31. Monitoring

32. Easy Unit Testing of JMS code ConnectionFactory factory = new ActiveMQConnectionFactory(“vm://localhost?broker.persistent=false”);

33. Visualisation

34. Prefetch new ActiveMQQueue("TEST.QUEUE?consumer.prefetchSize=10");

35. Exclusive Consumers

36. Message Groups

37. Total Ordering

38. Consumer Priority new ActiveMQQueue("TEST.QUEUE?consumer.priority=10");

39. Virtual Destinations

40. Mirrored Queues

41. Enterprise Integration Patterns via Camel http://activemq.apache.org/camel/

42. Bridge to other protocols http://activemq.apache.org/camel/components.html activemq ibatis mail rmi udp activemq.journal imap mina rnc validation bean irc mock rng velocity cxf jdbc msv seda vm direct jetty multicast sftp xmpp event jbi pojo smtp xquery ﬁle jms pop string-template xslt ftp jpa quartz timer webdav http log queue tcp

43. Example <camelContext xmlns="http://activemq.apache.org/camel/schema/spring"> <route> <from uri="file://quotes"/> <filter> <xpath>/quote/product = ‘widget’</xpath> <to uri="activemq:WidgetQuotes"/> </filter> </route> </camelContext>

44. Where do I get more info? http://activemq.apache.org/

45. Questions?

46. James Strachan blog http://macstrac.blogspot.com/

Enterprise Messaging with Apache ActiveMQ

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