Web API Business Layer Architecture and its responsibilities

Question

I have following classes in my web api business layer, i was wondering if GatewayService class should be in Business layer or should i put that in separate project called BusinessService? because its not being directly called in controller class and it doesn't depend on data repository ?

Business Layer

GatewayService (referencing < dll file > methods and making calls to external web service and returning list of transactions)
UserService (returns a list of all users from production database using < repository class > from data layer)
TransactionService ( get a list of all users from < UserService > and then get all their transactions from < Gateway Service > )

Here is what Transaction Controller doing;

Transaction Controller

Getting a list of users from < UserService >

Passing a list of Users to < TransactionService > which will then return a list of user transactions

Passing a list of all transactions to < TransactionService > to process them through a data repository class

Sebastian 506563 · Answer 1 · 2018-11-14T22:29:23.560

1

In case of N-Layer architecture

TransactionService should be in an Application layer, then your GatewayService can be part of the Business Layer.

In case of Clean Architecture

GatewayService should be part of Presistence or Infrastracture layer so it is not a business layer (here domain and application).

edited Nov 14 '18 at 22:29

answered Nov 14 '18 at 22:27

Sebastian 506563

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i have never seen a Application Layer in WEB API project. – user1263981 Nov 14 '18 at 22:29
It does not matter if it is WEB API, MVC, or a ConsoleApp. It is about structure of your modules and finding a middle ground between speed and efficiency. In case of n-layer check the ABP project, in case of Clean Architecture JasonGT/NorthwindTraders project on github – Sebastian 506563 Nov 14 '18 at 22:32
What about User Service? would this stay in Business Layer? – user1263981 Nov 14 '18 at 22:47
In n-layered yes it is. – Sebastian 506563 Nov 14 '18 at 22:50
Can i call my Application layer a ApplicationService ? – user1263981 Nov 14 '18 at 22:51
Sorry this is gooing too deply into details. I also do not know what is the responsability of the ApplicationService. Answere contains enough key words for doing your own research about those. – Sebastian 506563 Nov 14 '18 at 22:56

score 0 · Answer 2 · edited Dec 12 '18 at 07:05

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It would be a part of the business layer. The business layer is where you would implement the external requirements for your system fx. logistics and so. Which falls under the same category as your gateway service.

edited Dec 12 '18 at 07:05

Pang

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answered Nov 14 '18 at 22:36

Web API Business Layer Architecture and its responsibilities

2 Answers2