Integration made easy with Apache Camel
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This document discusses Apache Camel, an open-source integration framework. It begins with an overview of Camel and enterprise integration patterns. A live demo then shows how to route messages using the Java DSL. The document outlines the key components of Camel, including over 120 connectors, data formats, expression languages and domain-specific languages. It also covers testing, deployment options, and management of Camel applications.
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Integration made easy with Apache Camel
- 1. Integration Made Easy With Apache Camel Atanas Shindov, Software AG Rosen Spasov, Software AG
- 2. Agenda • What is Apache Camel? • Live Demo • What’s in the box? • Deploying and Testing Camel • Q & A
- 3. Agenda • What is Apache Camel? – Enterprise Integration Patterns – Java and XML DSLs – Architecture • Live Demo • What’s in the box? • Deploying and Testing Camel • Q & A
- 4. What is Apache Camel? http://camel.apache.org/what-is-camel.html Apache Camel™ is a versatile open- source integration framework based on known Enterprise Integration Patterns.
- 5. What is Apache Camel? ● 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"
- 6. Enterprise Integration Patterns http://www.enterpriseintegrationpatterns.co ● It’s a book ● Contains 65 integration patterns ● Provides a consistent vocabulary and visual notation to describe large-scale integration solutions across many implementation technologies
- 9. Content Based Router from newOrder
- 10. Content Based Router from newOrder choice
- 11. Content Based Router from newOrder choice when isWidget to widget
- 12. Content Based Router from newOrder choice when isWidget to widget otherwise to gadget
- 13. Content Based Router from(newOrder) choice when(isWidget) to(widget) otherwise to(gadget)
- 14. Content Based Router from(newOrder) .choice() .when(isWidget).to(widget) .otherwise().to(gadget);
- 15. Content Based Router Endpoint newOrder = endpoint("activemq:queue:newOrder"); from(newOrder) .choice() .when(isWidget).to(widget) .otherwise().to(gadget)
- 16. Content Based Router Endpoint newOrder = endpoint("activemq:queue:newOrder"); Predicate isWidget = xpath("/order/product = 'widget'"); from(newOrder) .choice() .when(isWidget).to(widget) .otherwise().to(gadget)
- 17. Content Based Router 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)
- 18. Content Based Router 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(); }
- 19. Java Code import 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(); } }
- 20. Camel Java DSL import 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 { from("activemq:queue:newOrder") .choice() .when(xpath("/order/product = 'widget'")) .to("activemq:queue:widget") .otherwise() .to("activemq:queue:gadget") .end(); } }
- 21. 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>
- 22. Camel XML DSL <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
- 23. Camel XML DSL <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
- 25. Quick Summary ● Integration Framework ● Enterprise Integration Patterns (EIP) ● Routing (using DSL) ● Easy Configuration (endpoints as URIs) ● Payload Agnostic ● No Container Dependency ● 120+ Components (connectors)
- 26. Agenda • What is Apache Camel? • Live Demo – File example using Eclipse – Console example – More examples… • What’s in the box? • Deploying and Testing Camel • Q & A
- 27. Live Demo
- 28. Console Example
- 30. Agenda • What is Apache Camel? • Live Demo • What’s in the box? – EIP, Components, Data Formats, EL – Domain Specific Languages – Testing and Managing Applications • Deploying and Testing Camel • Q & A
- 32. What's in the box? ● Splitter EIP
- 33. 120+ Components
- 34. 19 Data Formats
- 36. 5+ DSL ● Java DSL ● XML DSL (Spring and OSGi Blueprint) ● Groovy DSL ● Scala DSL ● Kotlin DSL (work in progress)
- 38. Web Console - HawtIO http://hawt.io
- 39. What Else? ● Interceptors ● Security ● Route Policy ● Type Converters ● Transaction ● Asynchronous non-blocking routing engine ● Thread management ● Maven Tooling... and much, much more
- 40. Agenda • What is Apache Camel? • Live Demo • What’s in the box? • Deploying and Testing Camel • Q & A
- 41. Deploying Camel ● Deployment Strategy ● No Container Dependency ● Lightweight & Embeddable ● Deployment Options ● Standalone ● WAR ● Spring ● JEE, OSGi, Cloud
- 42. Java Client Application ● No routes required ● Example - upload a file to an FTP server
- 43. Author and Contributors James Strachan Claus Ibsen
- 44. What next? ● Buy the “Camel in Action” book ● Visit the web site - camel.apache.org ● Go through the examples ● Experiment… http://manning.com/ibsen
- 45. Q&A
- 46. Thank You! Atanas Shindov Software Engineer, Software AG