CheckAuthInContextMiddleware is a chain.SecurityChainMiddleware that performs a check for the Auth object in the context.

DummyUserPassAuthBuilder returns a chain.MiddlewareBuilder factory function.

RetrieveAuthFromContext first stores an Auth object in context, then retrieves it via auth.GetAuth.

SecurityChainExample illustrates setting up a security chain with 2 middlewares: 1.

SecurityChainExampleFailAuth illustrates setting up a security chain same as SecurityChainExample, but the request contains wrong authentication and the chain returns an error.

SetAuthInContext sets an auth.Auth object in context and checks for it.

NoAuthenticationPresent is a custom error for the auth middleware generated when there is no authentication created.

DBUser represents a user stored in some persistence.

UserRepository is an in-memory user data store.