/Domain-Driven-Design-ASP.NET-Microservices-App

Primary LanguageC#

Domain Driven Design ASP.NET-Microservices-App - Seller

ASP.NET Core Server + Angular Client

Seller APP Idea

This is extreamly simple app for Listing Properties on the market, make offers and make deal for them.

Domain Driven Design part

Seller.Listings Microservice is reworked with DDD Seller.Offers Microservice is reworked with DDD Seller.Shared.DDD for containing All Domain Driven Design Common Code

Domain Driven Design idea in this app

My goal is Clean Architecture, so we have to Split the app into Layers

  1. Domain Layer - Entities - no data anotations, validations, custom domain exceptions, private setters, internal constuctors, public factories only for the aggregate roots
  2. Application Layer - using Intefaces and Commands (All but GET) & Queries (GET) for every call from the controllers, using MediatoR, using Input and Output Models
  3. Infrastructure Layer - Using Repository patern
  4. Presentation Layer - using Controllers with No application logic
  5. Test - App is generaly Tested with the Client App, but there are some test on Listings MS Domain Layer, Infrastructure Layer and Start Project
In a few words on my FIRST DDD app I just tryed to split the app and integrate as much DDD concepts as I can and have the client app to asure myself if wroks as intended so these are the flows in the app that I can see:

What is Missing from Domain Driven Design Consepts or simply can be done better:

  1. Domain - Value Objects Not used, Enumerations Not used, Events Not used, Validations only in domain layer
  2. Application - Automapper is Not used
  3. Infrastructure - No DB objects
  4. Test - The app is Not truly tested only few test are made

App content

Clent Url http://localhost:4200

  • Clent App Angular
  • Server Apps ASP.NET 3.1 - 7 Microservices
    1. Seller.Admin - MVC only for Admin http://localhost:5013
    2. Seller.Identity - Api with DB - Entity Asp.Net.USer
    3. Seller.Listings - Api with DB - Entities - Seller : User, Lising, Deals and Messages from Masstransit
    4. Seller.Messages - Api with DB - Entity Message
    5. Seller.Offers - Api with DB - Entity Offer
    6. Seller.Listings.Gateway - Api Gateway
    7. Seller.Shared - Library

App functionality

Not Logged User can do

  1. / - See Landing page
  2. Login - on Post direct Call login User
  3. Register - on Post Multy Call to IdentityMS to Register User and ListingsMS to Create Seller : User First Registered user is Admin

Logged User can do

  1. See All Lisings - on Get Direct Call to Listing MS, Search - Client implementation

  2. See Mini Lisings - on Get Direct Call to Listing MS, Search - Client implementation

  3. Add Listing - on Post Direct Call to Listing MS andUsing Messaging to send message to NotificationsMS Using SingleR notify the Client and all Logged User about that new listing is published.

  4. Lising Deatails - on Get See details Milty Call from Client to LisingMS and from Client OffersMS to get offersCount

    • If User is Owner of listing

    1. See all offers - on Get Call to Lising.Gateway ot agregete data from OffersMS And LisingMS Accept on Post direct call To LisingsMS to crete Deal and set Lising.IsDeal to true and Using Messaging call to OfferMS to set this IsAccepted to true to all other offer IsDeleted to True

    2. Edit Lising - on Get - Direct Call to LisingMS, on Post Direct Call edit Lising and, Using Messaging if Title is changed to Consumer - OffersMS (offer title = listing title if there are offers change thеir title)

    3. Delete Lising - on Post Direct Call edit Lising and, Using Messaging to set Offers.IsDeleted all associated with this listing to true - soft delete

    • If User is not Owner of listing - Add Offer - on Post Direct Call to OffersMS

  5. Mine Offers - on Get Call To Lisings.Gateway to aggregate data from LisingMS and OffersMS - Deatails - see listing details; - Delete - on Post Set IsDeleted to true

  6. Mine Deals - on Get Call To Lisings.Gateway to aggregate data from LisingMS Buy Deals And Sale Deals Service and see all Bought Properties and all Sold Properties

  7. Contact Us - on Post irect call to Seller.Messages send message to site administrator

  8. Logout - Clent delete token from Localstorage

Admin can do

  1. Can login in AdminMS on get Direct call to MessageMS see all sent messages from users and archive them on on Post direct call.