In this chapter, we will be focusing on snippets in sagas. We will discuss an e-mail and Secure File Transfer Protocol (SFTP) example that will be set to timeout by a daily timer in saga code. The saga code will be a mediator between a frontend Windows Presentation Framework (WPF) and a backend client executing either e-mail or SFTP. Using a saga as a mediator between frontend and backend code that will interface into an external server will offer many added benefits and features. The external server interface, such as an e-mail server or SFTP server, is usually beyond our control and is in the control of external operations or organizations, such as a bank. So, the interface into these servers is all that we have to work with, and as business, software, and operational needs increase, we need a framework robust enough to meet these demands. Thus, we have NSB and sagas.

We will also walk through changing this application to support ActiveMQ. We will briefly discuss...