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Simplify Enterprise Integration With

Apache Camel and Fuse

Christian Posta Principal Middleware Specialist/Architect

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•  What is Integration?

•  Camel… what?

•  Honestly… Camel Rox!

•  Demo time! •  Questions? Yah… over beer J

Agenda

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Your speaker Christian Posta Blog: http://christianposta.com/blog

Twitter: @christianposta

Email: christian@redhat.com

•  Principal Middleware Specialist/Architect

•  Based in Phoenix, AZ

•  Committer on Apache Camel, ActiveMQ, Apollo

•  Author: Essential Camel Components DZone Refcard

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What is Integration?

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Integration?

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•  Off the shelf? Home Grown? Acquisition? •  Platforms •  Protocols / Data Formats •  Data Formats •  Timing •  Organizational mismatch

Integration L

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•  Common language!!!!! •  Specific context •  Forces at work •  Concrete solution •  Guidance •  65 patterns

Patterns FTW!

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•  Protocol mediation •  Routing, Transformation, EIPs •  Start small, build up, ESB if needed •  Open Source •  Community driven

Lightweight integration, right?

Consume XML doc from file system, put onto messaging queue, separately consume from queue, do some routing, archive to file system. Logging, tracing, debugging. Also implement flexibility, HA messaging, scalability.

•  Clearly cannot be done •  A few months •  A few weeks •  A few Days •  < 1 day

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Camel… right?

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Apache Camel Apache Camel is an open-source,

light-weight, integration library.

Use Camel to integrate disparate systems that speak different protocols and data formats

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•  Light-weight integration library •  Domain Specific Language •  Enterprise Integration Patterns •  Components •  Routing and Mediation (like an ESB?) •  Runs in any container (or stand alone)

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What is Apache Camel?

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Quick Example

File System Message Oriented Middleware

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Quick Example

From A Send to B Filter message

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Quick Example

from(A) to(B) filter(predicate)

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Quick Example

from(A) .to(B) .filter(isWidget)

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Quick Example

isWidget = xpath(“/quote/product = ‘widget’”); from(A) .filter(isWidget). to(B)

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Honestly! Camel Rox!

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•  Defined in Java, XML, Scala, Groovy DSL •  Step by step processing of a message:

•  Consumer – Listen for incoming message •  Zero or more “filters” or Processors •  Producer – Send outgoing message

•  Pipeline of “filters” or “processors” •  EIPs •  Tranformation •  Expressions •  Exceptions

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Camel Routes

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• 

Domain Specific Language •  Domain specific (integration)

•  Build and describe integration flows

•  Embedded within a general programming language

•  Java, Spring XML, Scala, Groovy

•  Take advantage of existing tools

•  Fluent builders (builder pattern…) •  from(“..”).enrich(“…”).filter(“..”).to(“…”);

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public class OrderProcessorRouteBuilder extends RouteBuilder { @Override public void configure() throws Exception { from(“activemq:orders”)

.choice() .when(header(“customer-rating”).isEqualTo(“gold”)) .to(“ibmmq:topic:specialCustomer”) .otherwise() .to(“ftp://user@host/orders/regularCustomers”) .end() .log(“received new order ${body.orderId}”) .to(“ibatis:storeOrder?statementType=Insert”); }}

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<route id=“processOrders”> <from uri=“activemq:orders”/>

<choice> <when> <simple>${header.customer-rating} == ‘gold’</simple> <to uri=“ibmmq:topic:specialCustomer”> </when>

<otherwise> <to uri=“ftp://user@host/orders/regularCustomers” /> </otherwise>

</choice> <log message=“received new order ${body.orderId}”/> <to uri=“ibatis:storeOrder?statementType=Insert”/> </route>

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•  Message Routing •  Transformation •  Aggregation •  Splitting •  Resequencer •  Routing Slip •  Enricher

Enterprise Integration Patterns

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Components •  ActiveMQ, Websphere, Weblogic (JMS) •  AMQP

•  ATOM feeds

•  AWS (S3, SQS, SNS, others)

•  Bean

•  Cache (EHCache) •  CXF (JAX-WS, JAX-RS)

•  EJB

•  Drools

•  File

•  FTP •  Google App Engine

•  GMail •  HTTP •  IRC •  jclouds •  JDBC •  Jetty •  Twitter •  MQTT •  MyBatis •  JPA •  Spring Integration •  Spring Web Services

http://camel.apache.org/components.html

To see list of all components!!

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•  URI format: •  scheme:localPart[?options]

•  scheme: identifies the “component” •  localPart: specific to the component •  options: is a list of name-value pairs

•  Creates endpoints based on configuration •  Route endpoint “factories” •  Integrate with Camel Routes by creating producer/

consumer endpoints

Components

from(“aws-sqs://demo?defaultVisibilityTimeout=2”)

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Another Example

public class MyExampleRouteBuilder extends RouteBuilder { @Override public void configure() throws Exception { from(“aws-sqs://demo?defaultVisibilityTimeout=2”) .setHeader(“type”).jsonpath(“$[‘type’]”)

.filter(simple(“${header.type} == ‘login’”) .to(“jms:quote”);

}}

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Management with HawtIO http://hawt.io

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Developer Tooling Support

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JBoss Fuse Integrate Everything!

Fabric8 (JBoss Fuse + Fabric)

•  http://fabric8.io •  Simplifies deployments, management •  Blurs the line of PaaS •  Provides cluster capabilities, coordination •  Containers and Profiles •  Provides additional management tools for

centralized configuration and monitoring 31

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Fabric8

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Resources

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Professional Training Camel Development with Red Hat JBoss Fuse

http://www.redhat.com/training/courses/jb421r/

Red Hat JBoss A-MQ Development and Deployment https://www.redhat.com/training/courses/jb437r/

Red Hat Certificate of Expertise in Camel Development http://www.redhat.com/training/certifications/jbcd-camel-development/

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Books

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• 

Dzone Refcardz

•  Camel Essential Components •  http://refcardz.dzone.com/refcardz/essential-camel-components

•  Essential EIP with Apache Camel •  http://refcardz.dzone.com/refcardz/enterprise-integration

REFCARDZ

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Questions

Consume XML doc from file system, put onto messaging queue,

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Separately consume from queue, do some routing, archive to file system.

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Logging, tracing, debugging. Also implement flexibility, HA messaging, scalability.

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