Software integration with Apache Camel.

1. Integration Made Easy With Apache Camel
Atanas Shindov, Software AG
Rosen Spasov, Software AG

2. Agenda
• What is Apache Camel?
• Live Demo
• What’s in the box?
• Deploying and Testing Camel
• Q & A

3. Agenda
• What is Apache Camel?
– Enterprise Integration Patterns
– Java and XML DSLs
– Architecture
• Live Demo
• What’s in the box?
• Deploying and Testing Camel
• Q & A

4. What is Apache Camel?
http://camel.apache.org/what-is-camel.html
Apache Camel™ is a versatile open-
source integration framework based
on known Enterprise Integration
Patterns.

5. 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"

6. Enterprise Integration Patterns
http://www.enterpriseintegrationpatterns.co
● It’s a book 
● Contains 65 integration patterns
● Provides a consistent vocabulary and visual
notation to describe large-scale integration
solutions across many implementation
technologies

7. Enterprise Integration Patterns
http://camel.apache.org/eip

8. Content Based Router

9. Content Based Router
from newOrder

10. Content Based Router
from newOrder
choice

11. Content Based Router
from newOrder
choice
when isWidget to widget

12. Content Based Router
from newOrder
choice
when isWidget to widget
otherwise to gadget

13. Content Based Router
from(newOrder)
choice
when(isWidget) to(widget)
otherwise to(gadget)

14. Content Based Router
from(newOrder)
.choice()
.when(isWidget).to(widget)
.otherwise().to(gadget);

15. Content Based Router
Endpoint newOrder = endpoint("activemq:queue:newOrder");
from(newOrder)
.choice()
.when(isWidget).to(widget)
.otherwise().to(gadget)

16. Content Based Router
Endpoint newOrder = endpoint("activemq:queue:newOrder");
Predicate isWidget = xpath("/order/product = 'widget'");
from(newOrder)
.choice()
.when(isWidget).to(widget)
.otherwise().to(gadget)

17. Content Based Router
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)

18. Content Based Router
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();
}

19. 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();
}
}

20. Camel Java DSL
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 {
from("activemq:queue:newOrder")
.choice()
.when(xpath("/order/product = 'widget'"))
.to("activemq:queue:widget")
.otherwise()
.to("activemq:queue:gadget")
.end();
}
}

21. 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>

22. Camel XML DSL
<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

23. Camel XML DSL
<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

24. Camel’s Architecture

25. Quick Summary
●
Integration Framework
●
Enterprise Integration Patterns (EIP)
●
Routing (using DSL)
●
Easy Configuration (endpoints as URIs)
●
Payload Agnostic
●
No Container Dependency
●
120+ Components (connectors)

26. Agenda
• What is Apache Camel?
• Live Demo
– File example using Eclipse
– Console example
– More examples…
• What’s in the box?
• Deploying and Testing Camel
• Q & A

27. Live Demo

28. Console Example

29. More Examples
http://camel.apache.org/examples

30. Agenda
• What is Apache Camel?
• Live Demo
• What’s in the box?
– EIP, Components, Data Formats, EL
– Domain Specific Languages
– Testing and Managing Applications
• Deploying and Testing Camel
• Q & A

31. Predefined Patterns
http://camel.apache.org/eip

32. What's in the box?
●
Splitter EIP

33. 120+ Components

34. 19 Data Formats

35. 15 Expression Languages

36. 5+ DSL
●
Java DSL
●
XML DSL (Spring and OSGi Blueprint)
●
Groovy DSL
●
Scala DSL
●
Kotlin DSL (work in progress)

37. Test Kit
●
camel-test
●
camel-test-spring
●
camel-test-blueprint
●
camel-testng

38. Web Console - HawtIO
http://hawt.io

39. What Else?
●
Interceptors
●
Security
●
Route Policy
●
Type Converters
●
Transaction
●
Asynchronous non-blocking routing engine
●
Thread management
●
Maven Tooling... and much, much more

40. Agenda
• What is Apache Camel?
• Live Demo
• What’s in the box?
• Deploying and Testing Camel
• Q & A

41. Deploying Camel
●
Deployment Strategy
●
No Container Dependency
●
Lightweight & Embeddable
●
Deployment Options
●
Standalone
●
WAR
●
Spring
●
JEE, OSGi, Cloud

42. Java Client Application
●
No routes required
●
Example - upload a file to an FTP server

43. Author and Contributors
James Strachan Claus Ibsen

44. What next?
●
Buy the “Camel in Action” book
●
Visit the web site - camel.apache.org
●
Go through the examples
●
Experiment…
http://manning.com/ibsen

45. Q&A

46. Thank You!
Atanas Shindov
Software Engineer, Software AG