This session will teach you how to get a good start with Apache Camel. We will introduce you to Apache Camel and how Camel its related to Enterprise Integration Patterns. And how you go about using these patterns in Camel routes, written in Java code or XML files. We will then discuss how you can get started developing with Camel, and how to setup a new project from scratch using Maven and Eclipse tooling. This session includes live demos that show how to build Camel applications in Java, Spring, OSGi Blueprint and alternative languages such as Scala and Groovy. You will also hear what other features Camel provides out of the box, which can make integration much easier for you. Before opening up for QA, we will share useful links where you can dive into learning more about Camel. This presentation was video taped which you can find here: http://javagruppen.dk/index.php/moder/historiske-moder/285-javagruppemode-115-apache-camel-i-aarhus

1. PUBLIC PRESENTATION | CLAUS IBSEN1
Getting Started with Apache Camel
Claus Ibsen (@davsclaus)
Principal Software Engineer, Red Hat
Javagruppen Århus, may 2013

2. PUBLIC PRESENTATION | CLAUS IBSEN2
Agenda
● History of Camel
● What is Apache Camel?
● A little Example
● Riding Camel
● What's in the Camel box?
● Deploying Camel
● Creating new Camel Projects
● Q and A

3. PUBLIC PRESENTATION | CLAUS IBSEN3
Your Speaker
● Principal Software Engineer at Red Hat
● Apache Camel
● 5 years working with Camel
● Author of Camel in Action book
● Contact
● EMail: cibsen@redhat.com
● Twitter: @davsclaus
● Blog: http://davsclaus.com
● Linkedin: http://www.linkedin.com/in/davsclaus

4. PUBLIC PRESENTATION | CLAUS IBSEN4
Why the name Camel?

5. PUBLIC PRESENTATION | CLAUS IBSEN5
Why the name Camel?
Because Camel is
easy to remember and type ...

6. PUBLIC PRESENTATION | CLAUS IBSEN6
Why the name Camel?
… or the creator used to smoke cigarets!
http://camel.apache.org/why-the-name-camel.html

7. PUBLIC PRESENTATION | CLAUS IBSEN7
Camel's parents

8. PUBLIC PRESENTATION | CLAUS IBSEN8
Camel's parents
James Strachan (creator of Camel)
Gregor Hohpe (author of EIP book)

9. PUBLIC PRESENTATION | CLAUS IBSEN9
The birth of Camel
● First Commit

10. PUBLIC PRESENTATION | CLAUS IBSEN10
The birth of Camel
● My first Commit

11. PUBLIC PRESENTATION | CLAUS IBSEN11
The birth of Camel
● First Release
● Apache Camel 1.0
June 2007
http://www.davsclaus.com/2012/05/looking-at-impressive-first-apache.html

12. PUBLIC PRESENTATION | CLAUS IBSEN12
Agenda
● History of Camel
● What is Apache Camel?
● A little Example
● Riding Camel
● What's in the Camel box?
● Deploying Camel
● Creating new Camel Projects
● Q and A

13. PUBLIC PRESENTATION | CLAUS IBSEN13
What is Apache Camel?
● Quote from the website

14. PUBLIC PRESENTATION | CLAUS IBSEN14
What is Apache Camel?
● Why do we need integration?
● Critical for your business to integrate
● Why Integration Framework?
● Framework do the heavy lifting
● You can focus on business problem
● Not "reinventing the wheel"

15. PUBLIC PRESENTATION | CLAUS IBSEN15
What is Apache Camel?
● What is Enterprise Integration Patterns?
It's a book

16. PUBLIC PRESENTATION | CLAUS IBSEN16
What is Apache Camel?
● Enterprise Integration Patterns
http://camel.apache.org/eip

17. PUBLIC PRESENTATION | CLAUS IBSEN17
What is Apache Camel?
● EIP - Content Based Router

18. PUBLIC PRESENTATION | CLAUS IBSEN18
What is Apache Camel?
from newOrder

19. PUBLIC PRESENTATION | CLAUS IBSEN19
What is Apache Camel?
from newOrder
choice

20. PUBLIC PRESENTATION | CLAUS IBSEN20
What is Apache Camel?
from newOrder
choice
when isWidget to widget

21. PUBLIC PRESENTATION | CLAUS IBSEN21
What is Apache Camel?
from newOrder
choice
when isWidget to widget
otherwise to gadget

22. PUBLIC PRESENTATION | CLAUS IBSEN22
What is Apache Camel?
from(newOrder)
choice
when(isWidget) to(widget)
otherwise to(gadget)

23. PUBLIC PRESENTATION | CLAUS IBSEN23
What is Apache Camel?
from(newOrder)
.choice()
.when(isWidget).to(widget)
.otherwise().to(gadget);

24. PUBLIC PRESENTATION | CLAUS IBSEN24
What is Apache Camel?
Endpoint newOrder = endpoint("activemq:queue:newOrder");
from(newOrder)
.choice()
.when(isWidget).to(widget)
.otherwise().to(gadget);

25. PUBLIC PRESENTATION | CLAUS IBSEN25
What is Apache Camel?
Endpoint newOrder = endpoint("activemq:queue:newOrder");
Predicate isWidget = xpath("/order/product = 'widget'");
from(newOrder)
.choice()
.when(isWidget).to(widget)
.otherwise().to(gadget);

26. PUBLIC PRESENTATION | CLAUS IBSEN26
What is Apache Camel?
Endpoint newOrder = endpoint("activemq:queue:newOrder");
Predicate isWidget = xpath("/order/product = 'widget'");
Endpoint widget = endpoint("activemq:queue:widget");
Endpoint gadget = endpoint("activemq:queue:gadget");
from(newOrder)
.choice()
.when(isWidget).to(widget)
.otherwise().to(gadget);

27. PUBLIC PRESENTATION | CLAUS IBSEN27
What is Apache Camel?
● Java Code
public void configure() throws Exception {
Endpoint newOrder = endpoint("activemq:queue:newOrder");
Predicate isWidget = xpath("/order/product = 'widget'");
Endpoint widget = endpoint("activemq:queue:widget");
Endpoint gadget = endpoint("activemq:queue:gadget");
from(newOrder)
.choice()
.when(isWidget).to(widget)
.otherwise().to(gadget)
.end();
}

28. PUBLIC PRESENTATION | CLAUS IBSEN28
What is Apache Camel?
● Java Code
import org.apache.camel.Endpoint;
import org.apache.camel.Predicate;
import org.apache.camel.builder.RouteBuilder;
public class MyRoute extends RouteBuilder {
public void configure() throws Exception {
Endpoint newOrder = endpoint("activemq:queue:newOrder");
Predicate isWidget = xpath("/order/product = 'widget'");
Endpoint widget = endpoint("activemq:queue:widget");
Endpoint gadget = endpoint("activemq:queue:gadget");
from(newOrder)
.choice()
.when(isWidget).to(widget)
.otherwise().to(gadget)
.end();
}
}

29. PUBLIC PRESENTATION | CLAUS IBSEN29
What is Apache Camel?
● Camel Java DSL
import org.apache.camel.builder.RouteBuilder;
public class MyRoute extends RouteBuilder {
public void configure() throws Exception {
from("activemq:queue:newOrder")
.choice()
.when(xpath("/order/product = 'widget'"))
.to("activemq:queue:widget")
.otherwise()
.to("activemq:queue:gadget")
.end();
}
}

30. PUBLIC PRESENTATION | CLAUS IBSEN30
What is Apache Camel?
● Camel XML DSL
<route>
<from uri="activemq:queue:newOrder"/>
<choice>
<when>
<xpath>/order/product = 'widget'</xpath>
<to uri="activemq:queue:widget"/>
</when>
<otherwise>
<to uri="activemq:queue:gadget"/>
</otherwise>
</choice>
</route>

31. PUBLIC PRESENTATION | CLAUS IBSEN31
What is Apache Camel?
● Endpoint as URIs
<route>
<from uri="file:inbox/orders"/>
<choice>
<when>
<xpath>/order/product = 'widget'</xpath>
<to uri="activemq:queue:widget"/>
</when>
<otherwise>
<to uri="activemq:queue:gadget"/>
</otherwise>
</choice>
</route>
use file instead

32. PUBLIC PRESENTATION | CLAUS IBSEN32
What is Apache Camel?
● Endpoint as URIs
<route>
<from uri="file:inbox/orders?delete=true"/>
<choice>
<when>
<xpath>/order/product = 'widget'</xpath>
<to uri="activemq:queue:widget"/>
</when>
<otherwise>
<to uri="activemq:queue:gadget"/>
</otherwise>
</choice>
</route>
parameters

33. PUBLIC PRESENTATION | CLAUS IBSEN33
What is Apache Camel?
● Camel's Architecture

34. PUBLIC PRESENTATION | CLAUS IBSEN34
What is Apache Camel?
120+ Components

35. PUBLIC PRESENTATION | CLAUS IBSEN35
What is Apache Camel?
120+ Components

36. PUBLIC PRESENTATION | CLAUS IBSEN36
What is Apache Camel?
● Summary
● Integration Framework
● Enterprise Integration Patterns (EIP)
● Routing (using DSL)
● Easy Configuration (endpoint as uri's)
● Payload Agnostic
● No Container Dependency
● A lot of components

37. PUBLIC PRESENTATION | CLAUS IBSEN37
Agenda
● History of Camel
● What is Apache Camel?
● A little Example
● Riding Camel
● What's in the Camel box?
● Deploying Camel
● Creating new Camel Projects
● Extending Camel
● Q and A

38. PUBLIC PRESENTATION | CLAUS IBSEN38
A Little Example
● File Copier Example

39. PUBLIC PRESENTATION | CLAUS IBSEN39
A Little Example
● File Copier Example

40. PUBLIC PRESENTATION | CLAUS IBSEN40
A Little Example
● File Copier Example

41. PUBLIC PRESENTATION | CLAUS IBSEN41
A Little Example
● File Copier Example

42. PUBLIC PRESENTATION | CLAUS IBSEN42
A Little Example
● File Copier Example

43. PUBLIC PRESENTATION | CLAUS IBSEN43
Agenda
● History of Camel
● What is Apache Camel?
● A little Example
● Riding Camel
● What's in the Camel box?
● Deploying Camel
● Creating new Camel Projects
● Q and A

44. PUBLIC PRESENTATION | CLAUS IBSEN44
Riding Camel
● Downloading Apache Camel
● zip/tarball (approx 14mb)
http://camel.apache.org

45. PUBLIC PRESENTATION | CLAUS IBSEN45
Riding Camel
● Using Command Shell
● Requires: Apache Maven
● From Eclipse

46. PUBLIC PRESENTATION | CLAUS IBSEN46
Riding Camel
● Console Example
● cd examples/camel-example-console
● mvn compile exec:java

47. PUBLIC PRESENTATION | CLAUS IBSEN47
Riding Camel
● Twitter Example
● cd examples/camel-example-twitter-websocket
● mvn compile exec:java http://localhost:9090/index.html

48. PUBLIC PRESENTATION | CLAUS IBSEN48
Riding Camel
● More examples ...
... and further details at website.
http://camel.apache.org/examples

49. PUBLIC PRESENTATION | CLAUS IBSEN49
Agenda
● History of Camel
● What is Apache Camel?
● A little Example
● Riding Camel
● What's in the box?
● Deploying Camel
● Creating new Camel Projects
● Q and A

50. PUBLIC PRESENTATION | CLAUS IBSEN50
What's in the box?

51. PUBLIC PRESENTATION | CLAUS IBSEN51
What's in the box?
● Enterprise Integration Patterns
http://camel.apache.org/eip

52. PUBLIC PRESENTATION | CLAUS IBSEN52
What's in the box?
● Pipes and Filters EIP

53. PUBLIC PRESENTATION | CLAUS IBSEN53
What's in the box?
● Pipes and Filters EIP

54. PUBLIC PRESENTATION | CLAUS IBSEN54
What's in the box?
● Recipient List EIP

55. PUBLIC PRESENTATION | CLAUS IBSEN55
What's in the box?
● Recipient List EIP

56. PUBLIC PRESENTATION | CLAUS IBSEN56
What's in the box?
● Splitter EIP

57. PUBLIC PRESENTATION | CLAUS IBSEN57
What's in the box?
120+ Components

58. PUBLIC PRESENTATION | CLAUS IBSEN58
What's in the box?
19 Data Formats

59. PUBLIC PRESENTATION | CLAUS IBSEN59
What's in the box?
15 Expression Languages

60. PUBLIC PRESENTATION | CLAUS IBSEN60
What's in the box?
5+ DSL in multiple languages
● Java DSL
● XML DSL (Spring and OSGi Blueprint)
● Groovy DSL
● Scala DSL
● Kotlin DSL (work in progress)

61. PUBLIC PRESENTATION | CLAUS IBSEN61
What's in the box?
● Type Converters

62. PUBLIC PRESENTATION | CLAUS IBSEN62
What's in the box?
● Writing Custom Type Converter

63. PUBLIC PRESENTATION | CLAUS IBSEN63
What's in the box?
● Bean as Message Translator

64. PUBLIC PRESENTATION | CLAUS IBSEN64
What's in the box?
● Bean as Message Translator

65. PUBLIC PRESENTATION | CLAUS IBSEN65
What's in the box?
● Working with beans

66. PUBLIC PRESENTATION | CLAUS IBSEN66
What's in the box?
● Working with beans

67. PUBLIC PRESENTATION | CLAUS IBSEN67
What's in the box?
● Working with beans

68. PUBLIC PRESENTATION | CLAUS IBSEN68
What's in the box?
● Working with beans

69. PUBLIC PRESENTATION | CLAUS IBSEN69
What's in the box?
Test Kit
● camel-test camel-test-spring
● camel-test-blueprint camel-testng

70. PUBLIC PRESENTATION | CLAUS IBSEN70
What's in the box?
Management
● JMX
● REST
(@deprecated)

71. PUBLIC PRESENTATION | CLAUS IBSEN71
What's in the box?
Tooling – Web console - HawtIO
http://hawt.io

72. PUBLIC PRESENTATION | CLAUS IBSEN72
What's in the box?
Tooling – Eclipse Plugin – Fuse IDE
http://github.com/fusesource/fuseide

73. PUBLIC PRESENTATION | CLAUS IBSEN73
What's in the box?
Error Handling

74. PUBLIC PRESENTATION | CLAUS IBSEN74
What's in the box?
try .. catch style

75. PUBLIC PRESENTATION | CLAUS IBSEN75
What's in the box?
Dead Letter Channel (EIP style)

76. PUBLIC PRESENTATION | CLAUS IBSEN76
What's in the box?
Dead Letter Channel (EIP style)

77. PUBLIC PRESENTATION | CLAUS IBSEN77
What's in the box?
The Rest
● Interceptors
● Security
● Route Policy
● Type Converters
● Transaction
● Compensation as rollback
● Asynchronous non-blocking routing engine
● Thread management
● Maven Tooling
● ... and much more

78. PUBLIC PRESENTATION | CLAUS IBSEN78
Agenda
● History of Camel
● What is Apache Camel?
● A little Example
● Riding Camel
● What's in the Camel box?
● Deploying Camel
● Creating new Camel Projects
● Extending Camel
● Q and A

79. PUBLIC PRESENTATION | CLAUS IBSEN79
Deploying Camel
● Deployment Strategy
● No Container Dependency
● Lightweight & Embeddable
● Deployment Options
● Standalone
● WAR
● Spring
● JEE
● OSGi
● Cloud

80. PUBLIC PRESENTATION | CLAUS IBSEN80
Camel as a Client
● Java Client Application (no routes)
● Example
● Upload a file to a FTP server

81. PUBLIC PRESENTATION | CLAUS IBSEN81
Agenda
● History of Camel
● What is Apache Camel?
● A little Example
● Riding Camel
● What's in the Camel box?
● Deploying Camel
● Creating new Camel Projects
● Q and A

82. PUBLIC PRESENTATION | CLAUS IBSEN82
Creating new Camel Projects
● Using Command Shell
● From Eclipse

83. PUBLIC PRESENTATION | CLAUS IBSEN83
Creating new Camel Projects
● Maven Archetypes

84. PUBLIC PRESENTATION | CLAUS IBSEN84
Creating new Camel Projects
● camel-archetype-blueprint

85. PUBLIC PRESENTATION | CLAUS IBSEN85
Creating new Camel Projects
● Importing into Eclipse
Existing Maven Project

86. PUBLIC PRESENTATION | CLAUS IBSEN86
Creating new Camel Projects
● Testing Camel Projects
● ... from inside Eclipse

87. PUBLIC PRESENTATION | CLAUS IBSEN87
Agenda
● History of Camel
● What is Apache Camel?
● A little Example
● Riding Camel
● What's in the Camel box?
● Deploying Camel
● Creating new Camel Projects
● Q and A

88. PUBLIC PRESENTATION | CLAUS IBSEN88
Where do I get more information?
● Best Article covering what Apache Camel is
● http://java.dzone.com/articles/open-source-integration-
apache
Link to article from “Getting Started”

89. PUBLIC PRESENTATION | CLAUS IBSEN89
Where do I get more information?
● Try Camel Examples
● http://camel.apache.org/examples.html
● Read other blogs and articles
● http://camel.apache.org/articles.html
● Use the “search box” on the Camel front page

90. PUBLIC PRESENTATION | CLAUS IBSEN90
Where do I get more information?
● Use the mailing list / forum
● http://camel.apache.org/mailing-lists.html
● Use stackoverflow
● http://stackoverflow.com/questions/tagged/apache-camel

91. PUBLIC PRESENTATION | CLAUS IBSEN91
Where do I get more information?
● Buy the Camel in Action book
http://manning.com/ibsen/
Use code ...
camel40
… for 40% discount

92. PUBLIC PRESENTATION | CLAUS IBSEN92
Any Questions ?
● Contact
● EMail: cibsen@redhat.com
● Twitter: @davsclaus
● Blog: http://davsclaus.com
● Linkedin: http://www.linkedin.com/in/davsclaus