ApachecameV1

Endpoint C
Message
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Multicast
IBatis
Endpoint B
SMTP
Endpoint A
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Lightweight Enterprise Integration Patterns Frameworks:
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Camel MuleESB Spring Integration WPS (Websphere Process Server) Biztalk Server
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Process Servers, EAI, …
Endpoint B
Message
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Endpoint D
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7
Camel compared to Mule

You don't need to create a lot of XML config files with inbound/outbound stuff like you have to do in Mule. The routing in Mule is not so intuitive and not appear directly in the XML or DSL
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Java DSL (or Fluent API) Spring Xml Configuration files.
3
What is camel ?

Apache Camel uses URIs
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Works with any kind of transport or messaging such as:
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The basics
9
Message Routing
Endpoint A
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Built-in BAM Features
Extendable
12
Simple Routing
Endpoint A
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Camel compared to Mule

Both based on Spring + POJO They can run in standalone mode or embedded in an OSGI server, application server They are not based on based on JBI specification
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Message filter: Java DSL
package com.acme.quotes; import org.apache.camel.builder.RouteBuilder; public class MyRouteBuilder extends RouteBuilder { public void configure() { // forward widget quotes to MQSeries from("activemq:topic:Quotes"). filter().xpath("/quote/product = ‘widget’"). to("mqseries:WidgetQuotes"); } }
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Content Based Router: Java
from("activemq:NewOrders"). choice().when().xpath("/quote/product = 'widget'"). to("activemq:Orders.Widgets"). choice().when().xpath("/quote/product = 'gadget'"). to("activemq:Orders.Gadgets"). otherwise(). to("activemq:Orders.Bad");

CXF
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ServiceMix
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Open source ESB (Enterprise Service Bus) Web site: Current versions: 3.3.2 / 4.2.0 (OSGI Based)

Apache Mina ...
2
What is camel ?

A powerful Spring based Integration Framework It implements Enterprise Integration Patterns
Hale Waihona Puke Routing and mediation rules configured using :
Endpoint B
Jms
Message
File
13
Pipeline
Endpoint A
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A Java library with minimal dependencies:
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easy embedding in any Java application.
4
Camel and friends

ActiveMQ
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Open source messaging provider (JMS provider). Web site: Current version: 5.3.2 Open Source Service Framework (WebServices) Web site: Current version: 2.2.9


A powerful Spring based Integration Framework It implements Enterprise Integration Patterns Routing and mediation rules configured using :
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Java DSL (or Fluent API) Spring Xml Configuration files.
Taking Camel for a ride
Apache Camel
Hands on Hands on
Sidney Xiao
What is camel ?

It stands for :
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Concise Application Message Exchange Language (i.e. the Java DSL for routing) Its is a routing and mediation framework
» HTTP, ActiveMQ, JMS, MINA or CXF Bus API, … » Working with pluggable Data Format options
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Works with the same API regardless which kind of Transport used.
Endpoint B
File
Message
SFTP
Endpoint B
15
Message filter: Spring XML
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="/schema/beans" xmlns:xsi="/2001/XMLSchema-instance" xmlns:schemaLocation="…"> <camelContext xmlns="/camel/schema/spring"> <route> <from uri="activemq:topic:Quotes" /> <filter> <xpath>/quote/product = ‘widget’</xpath> <to uri="mqseries:WidgetQuotes" /> </filter> </route> </camelContext> </beans>
Endpoint B
Message
10
Camel Components
11
Kick Ass features

Integrates with almost everything … Support for:
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Scripting languages
» Groovy » Scala
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Google App Engine & Google APIs …
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Where the messages send over the bus are XML normalized messages
Camel has more components than Mule now Camel proposes a DSL Language Mule has better monitoring & management tools
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Content Based Router: Spring XML
5
Competitors and Families of products

ESB (Entreprise Service Bus):
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ServiceMix (JBI compliant, integrates Apache Camel) JbossESB WebSphereESB (SCA compliant) SonicESB, OpenESB, Petals...