Spring Integration is an open source framework for enterprise application integration. It is a lightweight framework that builds upon the core Spring framework. It is designed to enable the development of integration solutions typical of event-driven architectures and messaging-centric architectures.
Spring Integration extends the Spring programming model to support the well-known Enterprise Integration Patterns. Enables lightweight messaging within Spring-based applications and supports integration with external systems via declarative adapters. Those adapters provide a higher-level of abstraction over Spring’s support for remoting, messaging, and scheduling.
In this course, you are introduced to Enterprise Application Integration patterns and how Spring Integration addresses them. Next, you delve into the fundamentals of Spring Integration, like channels, transformers and adapters.
Furthermore, you will learn how Spring Integration works hand in hand with Web Services and Messaging Queues and finally you will develop a full-blown application from scratch.
About the Author
Xavier has a degree in computer technical engineering (B.Eng) and has kept forming himself in his main specialities, like Java (Sun Certified Java Programmer and Sun Certified Web Component Developer) and the Spring framework (SpringSource Certified Spring Professional and SpringSource Certified Enterprise Integration Specialist). His experience includes not only the development of web applications but also being involved in the design and implementation of architectural solutions. Some of the projects he was involved with, include the development of a SOA architecture and the design of a backend with enterprise integration patterns.
Introduction to Enterprise Application Integration
In our first lesson, you will get introduced to the concepts of Enterprise Application Integration. You will learn about the and Enterprise integration patterns that can be applied to simplify integration between different platforms and the Integration strategies that can be followed for this purpose. Finally, we will discuss how and why to implement a Message driven architecture and how to achieve both Synchronous and asynchronous communication among nodes.
Spring Integration Fundamentals
In this lesson, you will get to understand how Spring Integration works under the hood. The core concepts of Spring Integration messaging system (like message channels and endpoints) will be introduced. Additionally, the components that build the framework will be discussed, including the channel adapters, transformers, filters, routers etc. Finally, the two distinct methods of communication (synchronous and asynchronous) are explained and the lesson ends with a discussion on error handling.
Spring Integration and Web Services
In this lesson, we will focus on the integration with external web services. Spring Integration comes with the necessary functionality (adapters, channels etc.) to support web services out of the box. A full example is built from scratch in order to better understand the topic.
In this lesson, we will focus on integrating our application with JMS messaging. For this purpose, we will use Active MQ, which will be our broker. We will show examples of sending and receiving JMS messages by using the Spring Integration JMS channel adapters. Following these examples, we will see some ways of customizing these invocations by configuring message conversion and destination resolution.
Spring Integration Full Example
In this lesson, we will wrap everything up by providing a complete application that uses several of the components provided by Spring Integration in order to provide a service to its users. We will discuss the system architecture, the actual implementation and the relevant error handling.
Monitoring and Management
In this lesson, we will examine different mechanisms of monitoring or gathering more information about what is going on within the messaging system. Some of these mechanisms consist of managing or monitoring the application through MBeans, which are part of the JMX specification. Another mechanism discussed in this chapter is how we will implement the EIP idempotent receiver pattern using a metadata store. Finally, the last mechanism described is the control bus. This will let us send messages that will invoke operations on components in the application context.
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