Getting started with Apache Camel - May 2013

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

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

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

Why the name Camel?

Why the name Camel?
Because Camel is
easy to remember and type ...

Why the name Camel?
… or the creator used to smoke cigarets!
http://camel.apache.org/why-the-name-camel.html

Camel's parents

Camel's parents
James Strachan (creator of Camel)
Gregor Hohpe (author of EIP book)

The birth of Camel
● First Commit

The birth of Camel
● My first Commit

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

Agenda
● Riding Camel
● Deploying Camel
● Q and A

What is Apache Camel?
● Quote from the website

● 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"

● What is Enterprise Integration Patterns?
It's a book

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

● EIP - Content Based Router

from newOrder

from newOrder
choice

from newOrder
choice
when isWidget to widget

from newOrder
choice
when isWidget to widget
otherwise to gadget

from(newOrder)
choice
when(isWidget) to(widget)
otherwise to(gadget)

from(newOrder)
.choice()
.when(isWidget).to(widget)
.otherwise().to(gadget);

Endpoint newOrder = endpoint("activemq:queue:newOrder");
from(newOrder)
.choice()

Predicate isWidget = xpath("/order/product = 'widget'");
from(newOrder)
.choice()

Endpoint widget = endpoint("activemq:queue:widget");
Endpoint gadget = endpoint("activemq:queue:gadget");
from(newOrder)
.choice()

● Java Code
public void configure() throws Exception {
from(newOrder)
.choice()
.otherwise().to(gadget)
.end();
}

● Java Code
import org.apache.camel.Endpoint;
import org.apache.camel.Predicate;
import org.apache.camel.builder.RouteBuilder;
public class MyRoute extends RouteBuilder {
from(newOrder)
.choice()
.otherwise().to(gadget)
.end();
}
}

● Camel Java DSL
import org.apache.camel.builder.RouteBuilder;
public class MyRoute extends RouteBuilder {
from("activemq:queue:newOrder")
.choice()
.when(xpath("/order/product = 'widget'"))
.to("activemq:queue:widget")
.otherwise()
.to("activemq:queue:gadget")
.end();
}
}

● 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>

● Endpoint as URIs
<route>
<from uri="file:inbox/orders"/>
<choice>
<when>
</when>
<otherwise>
</otherwise>
</choice>
</route>
use file instead

● Endpoint as URIs
<route>
<from uri="file:inbox/orders?delete=true"/>
<choice>
<when>
</when>
<otherwise>
</otherwise>
</choice>
</route>
parameters

● Camel's Architecture

120+ Components

● 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

Agenda
● Riding Camel
● Deploying Camel
● Extending Camel
● Q and A

A Little Example
● File Copier Example

A Little Example

Agenda
● Riding Camel
● Deploying Camel
● Q and A

Riding Camel
● Downloading Apache Camel
● zip/tarball (approx 14mb)
http://camel.apache.org

Riding Camel
● Using Command Shell
● Requires: Apache Maven
● From Eclipse

Riding Camel
● Console Example
● cd examples/camel-example-console
● mvn compile exec:java

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

Riding Camel
● More examples ...
... and further details at website.
http://camel.apache.org/examples

Agenda
● Riding Camel
● What's in the box?
● Deploying Camel
● Q and A

What's in the box?

What's in the box?
● Enterprise Integration Patterns
http://camel.apache.org/eip

What's in the box?
● Pipes and Filters EIP

What's in the box?
● Recipient List EIP

What's in the box?
● Splitter EIP

What's in the box?
120+ Components

What's in the box?
19 Data Formats

What's in the box?
15 Expression Languages

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)

What's in the box?
● Type Converters

What's in the box?
● Writing Custom Type Converter

What's in the box?
● Bean as Message Translator

What's in the box?
● Working with beans

What's in the box?

What's in the box?
Test Kit
● camel-test camel-test-spring
● camel-test-blueprint camel-testng

What's in the box?
Management
● JMX
● REST
(@deprecated)

What's in the box?
Tooling – Web console - HawtIO
http://hawt.io

What's in the box?
Tooling – Eclipse Plugin – Fuse IDE
http://github.com/fusesource/fuseide

What's in the box?
Error Handling

What's in the box?
try .. catch style

What's in the box?
Dead Letter Channel (EIP style)

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

Agenda
● Riding Camel
● Deploying Camel
● Extending Camel
● Q and A

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

Camel as a Client
● Java Client Application (no routes)
● Example
● Upload a file to a FTP server

Agenda
● Riding Camel
● Deploying Camel
● Q and A

Creating new Camel Projects
● Using Command Shell
● From Eclipse

● Maven Archetypes

● camel-archetype-blueprint

● Importing into Eclipse
Existing Maven Project

● Testing Camel Projects
● ... from inside Eclipse

Agenda
● Riding Camel
● Deploying Camel
● Q and A

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”

● 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

● Use the mailing list / forum
● http://camel.apache.org/mailing-lists.html
● Use stackoverflow
● http://stackoverflow.com/questions/tagged/apache-camel

● Buy the Camel in Action book
http://manning.com/ibsen/
Use code ...
camel40
… for 40% discount

Any Questions ?
● Contact
● EMail: cibsen@redhat.com
● Twitter: @davsclaus
● Blog: http://davsclaus.com
● Linkedin: http://www.linkedin.com/in/davsclaus

Getting started with Apache Camel - May 2013

More Related Content

What's hot (20)

Similar to Getting started with Apache Camel - May 2013 (20)

More from Claus Ibsen (13)

Recently uploaded (20)

Getting started with Apache Camel - May 2013