Below is a description of the local environment necessary to execute this project as well as a basic description of the general flow of the program. This project was completed as a part of my time at Penn. State's Masters of Software Engineering program.
For this project, I wanted to make use of an open-source, non-proprietary service bus library to implement my own
bus. This project is derived from the PublishSubsribe sample outlined by the Shuttle.Esb Framework. For
more in-depth information on the mechanics of that framework (outside the confines of the below documentation), please consult the above-linked project.
The subscriptions are maintained by a SQL Database hosted on the same server as the project; it's configuration and
necessary set-up scripts can be found in the Configuration directory of this project. In order to run this project, locally,
you will need a SQL Server instance against which the SubscriptionManagerCreate.sql script should
be executed.
You will also need to configure the appropriate connection string in the StudentManagement.Esb.Server App.config
file.
The solution itself is two Console Applications: StudentManagement.Esb.Client and StudentManagement.Esb.Server that must be running concurrently
for everything to function as expected. A command line argument @user1 or @user2 is then supplied to *.Esb.Client's console and a corresponding
event is processed (written to the console) by the architecturally-designated Service Provider StudentManagement.Esb.ServiceProvider.CourseRegistrar.
In order to run this locally, you may also have to enable local message queueing on your machine
StudentManagement.Esb.Client's Program.cs functions as the ESB Service Requester: it publishes a message (command) of type CreateNewStudent
against the event system maintained by *.Esb.Server. *Esb.Server's Server.cs functions as our ESB: it takes on any responsibility that
might eventually be expected of a service bus. In our case, it translates the received CreateNewStudent command into a NewStudentData message
(event) that is then processed by Service Provider *.Esb.ServiceProvider.CourseRegistrar.