Spring Integration
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Spring Integration provides a lightweight alternative to enterprise service buses (ESBs) for integrating applications. It uses messaging and simple Java-based programming rather than complex configurations. Spring Integration applications are built on the popular Spring Framework and reuse existing Spring features. Compared to ESBs, Spring Integration is less robust but easier to adopt, test, and maintain as it focuses specifically on integration rather than complex routing. While still maturing, Spring Integration offers a cheaper way to integrate applications than full ESB solutions.
Spring Integration
- 1. Spring Integration - A cheaper & better alternative Srini Kumar http://www.srinikumar.com 24 / 04 / 2009
- 2. Agenda A brief on EAI EAI Options / patterns SOA Stack / ESB Need for a simple cleaner solution What is Spring Integration Oops did I waste all my money Conclusion References
- 3. Brief on EAI Enterprise Application Integration (EAI) is an application of technology defined as the integration of data and services between applications. Need for EAI Impossible to have a single application catering to every IT need of an Enterprise. Multiple Applications with different technologies and protocols need to collaborate to help the business run smoothly.
- 4. Options / Patterns based on EAI Patterns from Gregor Hohpe File Transfer Have each application produce files of shared data for others to consume, and consume files that others have produced. Shared Database Have the applications store the data they wish to share in a common database and share tables. Remote Procedure Invocation Have each application expose some of its services so that they can be invoked by others Example: EJB Services, SOAP Messaging Have each application connect to a common messaging system, and exchange data and invoke behavior using messages Example: JMS architecture
- 5. Will EAI options suffice As applications become old integration become difficult. Integrating each end point will create a Spaghetti File Transfer, Shared Database, RPC and Messaging are disparate because not one of them is fit for all approaches JMS, REST and SOAP are platform agnostic and they fail when they have FTP end points ESB Middle ware was born to solve all these issues
- 6. ESB’s provide Flexible Routing Messaging - Transformation Mediation – using Adapters Complex Event Processing Consume and provide services – Invocation Helps in logging, auditing and authentication
- 7. ESB & other products in a Reference Architecture
- 8. Is there an Alternative Spring Integration the cheaper alternative Don’t need to spend on SOA stack, no installations Can replace heavy ESB solutions Spring Integration is better Built on top of Spring Framework; Spring Integration applications are simple Java programs that are configured using Spring's schemas. Benefits from the same dependency injection and aspect runtime available to regular Spring bean With Spring Integration, the application context is the bus. The bus exists as long as the context is available.
- 9. How different than ESB ESB Spring Service bus exists between disparate systems. Becomes spaghetti over time Spring Integration has multiple light weight messaging buses between disparate systems. This helps integration of new systems not affecting the entire architecture and help in easy maintenance as well.
- 10. Spring Integration or ESB still confused Comparisons… ESB are highly robust and configuration based Spring is focused on Integration, not on ESB ESB are lot heavier and focuses on SOA deployment rather than integration ESB should be used for complex routing ESB has lot more integration options as of now
- 11. Spring Integration - Terminology Spring integration deals with notion of messages traveling thro channels A Message Channel represents the "pipe" of a pipes-and-filters Channel Adapter connects a Message Channel to some other system. The message starts its life at an endpoint, typically greeted by an adapter. Endpoint connects the code to the messaging system. As the message moves through the processing pipeline, it may be transformed, routed to other channels, split up, responded to, or aborted and sent on a dead message channel, all inside the bus.
- 12. Spring Integration - Advantages Ease of adoption Programming model familiar to existing spring users. Easy Integration of messaging to existing application. Integrates seamlessly with Spring Security and Spring Web Services. Lightweight Does not require install of heavyweight software. Quick to start and stop as part of the spring Application Context. Non Intrusive Framework decouples components from messaging infrastructure. Testable Simple unit testing of POJO components. Quick and simple integration testing.
- 13. Spring Integration - Need improvements Still new, needs more time to mature There are several vendors and solutions, Spring needs to try that out where adapters are well established, Still adapters such as SFTP are not supported Persistent channel implementation combined with Spring Integration has a few limitations. Need to write your own logic for now.
- 14. What else to expect Messaging gateway for Spring MVC Integration with Spring batch Spring security for end points Adapters for Spring application events Different adapters such as SFTP are being worked on
- 15. References Enterprise Integration Patterns (the book) – by Gregor Hohpe and Bobby Woolf (Addison Wesley 2004) – website: http://www.eaipatterns.com http://www.springframework.org/spring-integration Getting started with Spring Integration by Joshua Long - http://www.infoq.com/articles/Spring-Integration-Joshua-Long http://www.ibm.com/developerworks/library/ar-archtemp/ http://www.chariotsolutions.com/slides/pdfs/ete2008-intro-to-spring-integration-philly-emerging-tech.pdf
- 16. Thank you Any Q&A