Integration using Apache Camel and Groovy

Claus IbsenRed Hat

●Integration usingApache Camel & Groovy

PUBLIC PRESENTATION | CLAUS IBSEN2

Your Speaker

● Principal Software Engineer at Red Hat

● Apache Camel● 6 years as committer

● Author of Camel in Action book

● Contact● EMail: claus.ibsen@gmail.com● Twitter: @davsclaus● Blog: http://davsclaus.com● Linkedin: http://www.linkedin.com/in/davsclaus

This awesome ...

These two awesome has ...

These three awesome has ...

These three awesome has something in common

Agenda

● What is Apache Camel?

● A little Example

● Riding Camel

● Creating new Camel Projects

● hawtio

● Q & A

Why the name Camel?

Because Camel iseasy to remember and type ...

Why the name Camel?

… or the creator used to smoke cigarets!

http://camel.apache.org/why-the-name-camel.html

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);

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

orry ...

This is

a gr8conf

ts get G

roovy :)

from newOrder choice when isWidget to widget otherwise to gadget

from newOrder choice when isWidget to widget otherwise to gadgetUnfortu

nately the C

Groovy D

SL is not a

awesome …

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

We removed that last semi colon ;)

Endpoint newOrder = endpoint("activemq:queue:newOrder");

Endpoint newOrder = endpoint("activemq:queue:newOrder");Predicate isWidget = xpath("/order/product = 'widget'");

Endpoint newOrder = endpoint("activemq:queue:newOrder");Predicate isWidget = xpath("/order/product = 'widget'");Endpoint widget = endpoint("activemq:queue:widget");Endpoint gadget = endpoint("activemq:queue:gadget");

● 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(); }

● Java Codeimport 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(); }}

● 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(); }}

● 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> <xpath>/order/product = 'widget'</xpath> <to uri="activemq:queue:widget"/> </when> <otherwise> <to uri="activemq:queue:gadget"/> </otherwise> </choice> </route>

use file instead

● 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

Standard Java, XML, or Groovy

● Java DSL is just Java

● XML DSL is just XML

● … with XSD schema for validation/tooling

● Groovy DSL is just Groovy

GroovyClosure

● Camel's Architecture

150+ Components

● Summary● Integration Framework● Enterprise Integration Patterns (EIP)● Routing (using DSL)● Easy Configuration (endpoint as uri's)● Just Java, XML, or Groovy code● No Container Dependency● A lot of components

Agenda

● Riding Camel

● hawtio

● Q & A

A Little Example

● File Copier Example

A Little Example

A Little Groovy Example

A Little Groovy Example (all source)

A Little Groovy Example

● Run the example● groovy mycamel.groovy

Agenda

● Riding Camel

● hawtio

● Q & A

Riding Camel

● Downloading Apache Camel● zip/tarball (approx 8mb)

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

● hawtio

● Q & A

Creating new Camel Projects

● Using Command Shell

● .. or from Eclipse

● Importing into Eclipse

Existing Maven Project

● Maven Archetypes

camel-archetype-activemq camel-archetype-java

camel-archetype-blueprint camel-archetype-scala

camel-archetype-component camel-archetype-spring

camel-archetype-dataformat camel-archetype-spring-dm

camel-archetype-groovy camel-archetype-web

● camel-archetype-groovy

mvn installmvn exec:java

● camel-archetype-spring

mvn installmvn camel:run

mvn io.hawt:hawtio-maven-plugin:1.4.2:spring

Agenda

● Riding Camel

● hawtio

● Q & A

hawtio

● What does it do? ...

hawtio

● Yet another awesome project created by this guy ...

hawtio

Tooling – Web Console - hawtio

http://hawt.io

hawtio

● What does it dofor Apache Camel?

hawtio

● Technology Stack● HTML5 single page app● TypeScript → JavaScript● Angular JS● Bootstrap CSS● HTTP/REST ↔ backend● Jolokia on backend for JMX over REST● Plugins expose services as JMX or REST

http://hawt.io/plugins/howPluginsWork.html

Apache Camel & hawtio

Agenda

● Riding Camel

● hawtio

● Q & A

What about a 4th awesome project?

Any Questions ?

● Contact● EMail: cibsen@redhat.com / claus.ibsen@gmail.com ● Twitter: @davsclaus● Blog: http://davsclaus.com● Linkedin: http://www.linkedin.com/in/davsclaus

Integration using Apache Camel and Groovy

Technology

Transcript of Integration using Apache Camel and Groovy

Webinar Apache Camel Grundlagen Teil 2

Apache Camel - Enterprise Integration Patterns

Apache Camel - The integration library

Apache Camel Devoxx 2010

USER GUIDE - Apache Camel

Apache Camel Course

Apache Groovy: the language and the ecosystem

Supersonic Subatomic Apache Camel

Apache Camel - tutorialspoint.com€¦ · Apache Camel — Introduction . Apache Camel 2 The entire situation is shown in the following figure - Now, let us see how Apache Camel can

Apache ActiveMQ and Apache Camel

LatJUG. Apache Camel Introduction

Camel Manual 2.11.x - Apache Camel

Apache Camel Introduction

An introduction to Apache Camel

Apache Camel - Parte II

Get Cooking with Apache Camel

Xke - Introduction to Apache Camel

Apache Camel

Apache Camel Netty component

Introducing Apache Camel