Making an object accessible by Service Layer without passing as Parameter in MVC4 App

Question

I\'m building a multi-tenant MVC app where there\'s a single app pool and single database. I have a Tenant table, and each of my models has a TenantId identified.

Answer 1

I have the same 'problem' since I'm building a multi tenant app as well. However, I solved it quite simple, IMO: every repository/service has defined a TenantId property, that must be set when that service is used. TenantId is a value object and it will throw if null.

Now, the point is any of the repos/services can be used outside the request, for example in a background thread or app. I am using a message driven approach so any required info (like tenant id) is part of the message and thus available for the consumer of the service (the message handler). Another benefit is testability.

I advice against coupling your service to a request specific object like HttpContext, Session or Cache.