Description About Most Powerful Frame Work

1. A Progress Software
Company
Introduction to
Apache Camel
Bosanac Dejan
January 2011

2. © 2010 FuseSource, a Progress Software Company. All rights reserved. A Progress Software
Company
2
About me
 Bosanac Dejan
 Senior Software Engineer at FUSESource - http://
fusesource.com
 Apache ActiveMQ committer and PMC member
 Co-author of ActiveMQ in Action

3. © 2010 FuseSource, a Progress Software Company. All rights reserved. A Progress Software
Company
3
What is Apache Camel?
Apache Camel is a powerful Open Source Integration
Framework based on known Enterprise Integration Patterns

4. © 2010 FuseSource, a Progress Software Company. All rights reserved. A Progress Software
Company
4
Why Apache Camel?
 Integration can be messy - variety of protocols and
data formats
 Framework hides all complexity so you can focus on
your business logic

5. © 2010 FuseSource, a Progress Software Company. All rights reserved. A Progress Software
Company
5
Route example
Content Based Router

6. © 2010 FuseSource, a Progress Software Company. All rights reserved. A Progress Software
Company
6
Content based Router - XML
<camelContext>
<route>
<from uri="activemq:NewOrders"/>
<choice>
<when>
<xpath>/order/product = 'widget'</xpath>
<to uri="activemq:Orders.Widgets"/>
</when>
<otherwise>
<to uri="activemq:Orders.Gadgets"/>
</otherwise>
</choice>
</route>
</camelContext>

7. © 2010 FuseSource, a Progress Software Company. All rights reserved. A Progress Software
Company
7
Content Based Router - Java DSL
from("activemq:NewOrders")
.choice()
.when().xpath(“/order/product = 'widget'”)
.to(“activemq:Orders.Widget”)
.otherwise()
.to(“activemq:Orders.Gadget”);

8. © 2010 FuseSource, a Progress Software Company. All rights reserved. A Progress Software
Company
8
50 Enterprise Integration Patterns
http://camel.apache.org/enterprise-integration-patterns.html

9. © 2010 FuseSource, a Progress Software Company. All rights reserved. A Progress Software
Company
9
80 Components
activemq cxf flatpack jasypt
activemq-journal cxfrs freemarker javaspace
amqp dataset ftp/ftps/sftp jbi
atom db4o gae jcr
bean direct hdfs jdbc
bean validation ejb hibernate jetty
browse esper hl7 jms
cache event http jmx
cometd exec ibatis jpa
crypto file irc jt/400
http://camel.apache.org/components.html

10. © 2010 FuseSource, a Progress Software Company. All rights reserved. A Progress Software
Company
10
80 Components
language properties seda stream
ldap quartz servlet string-template
mail/imap/pop3 quickfix sip test
mina ref smooks timer
mock restlet smpp validation
msv rmi snmp velocity
nagios rnc spring-integration vm
netty rng spring-security xmpp
nmr rss spring-ws xquery
printer scalate sql xslt
http://camel.apache.org/components.html

11. © 2010 FuseSource, a Progress Software Company. All rights reserved. A Progress Software
Company
19 Data Formats
11
bindy protobuf
castor serialization
csv soap
crypto syslog
dozer tidy markup
flatpack xml beans
gzip xml security
hl7 xstream
jaxb zip
json
http://camel.apache.org/data-format.html
from("activemq:QueueWithJavaObjects”)
.marshal().jaxb()
.to("mq:QueueWithXmlMessages");

12. © 2010 FuseSource, a Progress Software Company. All rights reserved. A Progress Software
Company
14 Expression Languaes
12
BeanShell PHP
EL Python
Groovy Ruby
JavaScript Simple
JSR 223 SQL
OGNL XPath
MVEL XQuery
http://camel.apache.org/languages.html

13. © 2010 FuseSource, a Progress Software Company. All rights reserved. A Progress Software
Company
DSL in 3 programming Languages
13
XML
<route>
<from ref="A"/>
<filter>
<xpath>/quote/product = ‘widget’</xpath>
<to ref="B"/>
</filter>
</route>
Java
from(A).filter(isWidget).to(B);
Scala
from(A) filter(isWidget) --> B

14. © 2010 FuseSource, a Progress Software Company. All rights reserved. A Progress Software
Company
Running Camel
14
 Deployment Strategy
• No container dependency
• Lightweight
• Embeddable
 Deployment Options
• Standalone
• WAR
• Spring
• J2EE
• JBI
• OSGi
• Cloud
Known Containers
Apache ServiceMix
Apache ActiveMQ
Apache Tomcat
Jetty
JBoss
IBM WebSphere
Oracle WebLogic
Oracle OC4j
Glassfish
Google App Engine
... others

15. © 2010 FuseSource, a Progress Software Company. All rights reserved. A Progress Software
Company
Running Camel
15
CamelContext context = new DefaultCamelContext();
context.addRoutes(new MyRouteBuilder());
context.start();
<camelContext>
<package>com.acme</package>
</camelContext>
Spring Application
Java Application

16. © 2010 FuseSource, a Progress Software Company. All rights reserved. A Progress Software
Company
Managing Camel
 JMX API
 REST API
16
Fuse HQ SOA management and monitoring system based on
Hyperic HQ Enterprise

17. © 2010 FuseSource, a Progress Software Company. All rights reserved. A Progress Software
Company
Developer Web Console
17

18. © 2010 FuseSource, a Progress Software Company. All rights reserved. A Progress Software
Company
FuseSource Rider
18

19. © 2010 FuseSource, a Progress Software Company. All rights reserved. A Progress Software
Company
Rider Auto Parts Example by Jonathan Anstey
19
http://architects.dzone.com/articles/apache-camel-integration

20. © 2010 FuseSource, a Progress Software Company. All rights reserved. A Progress Software
Company
Rider Auto Parts Example by Jonathan Anstey
20
http://architects.dzone.com/articles/apache-camel-integration
1

21. © 2010 FuseSource, a Progress Software Company. All rights reserved. A Progress Software
Company
Rider Auto Parts Example by Jonathan Anstey
21
http://architects.dzone.com/articles/apache-camel-integration
2
1

22. © 2010 FuseSource, a Progress Software Company. All rights reserved. A Progress Software
Company
Rider Auto Parts Example by Jonathan Anstey
22
http://architects.dzone.com/articles/apache-camel-integration
1
2
3

23. © 2010 FuseSource, a Progress Software Company. All rights reserved. A Progress Software
Company
Rider Example - Spring Configuration
<broker xmlns="http://activemq.apache.org/schema/core" persistent="false">
<transportConnectors>
<transportConnectoruri="tcp://localhost:61616" />
</transportConnectors>
</broker>
<bean id="jms" class="org.apache.activemq.camel.component.ActiveMQComponent">
<property name="brokerURL" value="tcp://localhost:61616"/>
</bean>
<bean id="helper" class="org.fusesource.camel.OrderHelper"/>
<camelContext xmlns="http://activemq.apache.org/camel/schema/spring">
<package>org.fusesource.camel</package>
</camelContext>
23

24. © 2010 FuseSource, a Progress Software Company. All rights reserved. A Progress Software
Company
Rider Example - Route 1
24
public class Route1 extends RouteBuilder {
public void configure() throws Exception {
from("ftp:user@rider.com?password=secret")
.to("activemq:queue:incoming");
}
}

25. © 2010 FuseSource, a Progress Software Company. All rights reserved. A Progress Software
Company
Rider Example - Route 2
25
public class Route2 extends RouteBuilder {
public void configure() throws Exception {
from("jetty:http://localhost:8080/orders")
.inOnly("activemq:queue:incoming")
.transform().constant("OK");
}
}

26. © 2010 FuseSource, a Progress Software Company. All rights reserved. A Progress Software
Company
Rider Example - Route 3
26
public class Route3 extends RouteBuilder {
public void configure() throws Exception {
JaxbDataFormat jaxb = new JaxbDataFormat("com.rider");
BindyDataFormat bindy = new BindyDataFormat("com.rider");
from("activemq:queue:incoming")
.convertBodyTo(String.class)
.choice()
.when().method("helper”, "isXml")
.unmarshal(jaxb)
.to("activemq:queue:order")
.when().method("helper”, "isCsv")
.unmarshal(bindy)
.to("activemq:queue:order")
}
}

27. © 2010 FuseSource, a Progress Software Company. All rights reserved. A Progress Software
Company
Rider Example - Data Samples
27
XML Data
<?xml version="1.0" encoding="UTF-8"?>
<order name="motor" amount="1"/>
CSV Data
"name", "amount"
"brake pad", "2"

28. © 2010 FuseSource, a Progress Software Company. All rights reserved. A Progress Software
Company
Rider Example - Order helper
28
public class OrderHelper {
public boolean isCsv(String body) {
return !body.contains("<?xml");
}
public boolean isXml(String body) {
return body.contains("<?xml");
}
}

29. © 2010 FuseSource, a Progress Software Company. All rights reserved. A Progress Software
Company
Rider Example - Order Bean
29
@XmlAccessorType(XmlAccessType.FIELD)
public class Order implements Serializable {
@XmlAttribute
private String name;
@XmlAttribute
private int amount;
public Order() {
}
public Order(String name, int amount) {
this.name = name;
this.amount = amount;
}
@Override
public String toString() {
return "Order[" + name + " , " + amount + "]";
}
}

30. © 2010 FuseSource, a Progress Software Company. All rights reserved. A Progress Software
Company
What else is there?
 Error handling
 EIP annotations
 Test Kit
 Transactions
 Interceptors
 Security
 ...
30

31. © 2010 FuseSource, a Progress Software Company. All rights reserved. A Progress Software
Company
More Information
31
 Where do I get more information?
 Camel website: http://camel.apache.org
 Camel article: http://architects.dzone.com/articles/apache-camel-
integration
 Camel in Action book: http://manning.com/ibsen

32. © 2010 FuseSource, a Progress Software Company. All rights reserved. A Progress Software
Company
32
Blog:
http://www.nighttale.net/
Twitter:
http://twitter.com/dejanb
http://twitter.com/fusenews

33. © 2010 FuseSource, a Progress Software Company. All rights reserved. A Progress Software
Company
32
Questions?
Blog:
http://www.nighttale.net/
Twitter:
http://twitter.com/dejanb
http://twitter.com/fusenews