Tutorial: open source enterprise application integration - introducing the event processing capabilities of apache camel

• Authors: Christoph Emmersberger;Florian Springer
• Venue: Proceedings of the 7th ACM international conference on Distributed event-based systems
• Year: 2013

"Interesting applications rarely live in isolation." ([1], xxix) With this sentence G. Hohpe and B. Woolf start the introduction to their book Enterprise Integration Pattern: Designing, Building, and Deploying Messaging Solutions. While the statement is valid now for more than ten years, Gartner estimates today the cost increase targeting integration aspects for midsize to large companies at about 33% within the next three years (cf. [2]). The expected increase will be mainly driven by the integration of cloud services and mobile devices. Since event processing addresses clearly problems arising with the growth of computational distribution, particularly with the increasing number of mobile devices or cloud services, integration is a topic that needs to be addressed by event processing functionalities. One of the frameworks within the integration domain is Apache Camel. Since it's initial release in 2007, the framework has gained quite some attention - not only within the open-source arena. Apache Camel has a strong focus on enterprise application integration since it implements well known Enterprise Integration Patterns (EIP's) (cf. [1]). This work reveals the event processing capabilities of Apache Camel alongside a logistics parcel delivery process. The delivery process facilitates the scenario descriptions to exemplify the event processing functionalities within a real-world context. All coding examples, supporting the functionality demonstration, are setup around the shipment of parcels.