david-torosyan/onion-architecture

How david-torosyan/onion-architecture works

MyApp is a .NET user-management REST API organized around onion architecture. The main workflow accepts user creation, credential validation, or active-user listing requests, applies application logic and domain specifications, and persists or reads users through repository and unit-of-work abstractions backed by EF Core. Separate infrastructure capabilities provide logging and email delivery. The README documents broader architectural patterns and technologies; the graph focuses on capabilities evidenced by the tree and sampled source, so uncertain wiring is omitted.

Main entry points: UserService.cs User service · BaseRepositoryAsync.cs EF repository · UserController.cs User endpoints · UnitOfWork.cs Unit of work

Components 22

API presentation

Web API host src/MyApp.WebApi/Program.cs
User endpoints src/MyApp.WebApi/Controllers/UserController.cs

Application services

User service src/MyApp.Application/Services/UserService.cs
User service contract src/MyApp.Application/Interfaces/IUserService.cs
User requests and responses src/MyApp.Application/Models
User DTO src/MyApp.Application/Models/DTOs/UserDTO.cs

User domain

User entity src/MyApp.Domain/Entities/User.cs
User status src/MyApp.Domain/Enums/UserStatus.cs
User specifications src/MyApp.Domain/Specifications/UserSpecifications.cs
User exceptions src/MyApp.Domain/Exceptions
Repository contract src/MyApp.Domain/Core/Repositories/IBaseRepositoryAsync.cs
Unit of work contract src/MyApp.Domain/Core/Repositories/IUnitOfWork.cs
Specification contract src/MyApp.Domain/Core/Specifications/ISpecification.cs

Infrastructure

Unit of work src/MyApp.Infrastructure/Repositories/UnitOfWork.cs
EF repository src/MyApp.Infrastructure/Repositories/BaseRepositoryAsync.cs
Specification evaluator src/MyApp.Infrastructure/Repositories/SpecificationEvaluator.cs
EF database context src/MyApp.Infrastructure/Data/MyAppDbContext.cs
Logger service src/MyApp.Infrastructure/Services/LoggerService.cs
Email service src/MyApp.Infrastructure/Services/EmailService.cs

Other components

API client
SQL Server database
SMTP or pickup delivery

Connections 22

API client → User endpoints: sends requests
Web API host → User endpoints: maps controllers
User endpoints → User service contract: calls
User endpoints → User requests and responses: accepts and returns
User service contract → User service: implemented by
User service → Unit of work contract: calls
User service → User specifications: builds queries
User service → User entity: creates and reads
User service → User status: checks status
User service → User exceptions: throws
User service → User DTO: maps results
User service → Logger service: logs events
Unit of work contract → Unit of work: implemented by
Unit of work → Repository contract: provides repositories
Unit of work → EF database context: saves changes
Repository contract → EF repository: implemented by
EF repository → Specification evaluator: evaluates specifications
EF repository → Specification contract: accepts specifications
EF repository → EF database context: queries and updates
EF database context → SQL Server database: persists users
Web API host → SQL Server database: runs migrations
Email service → SMTP or pickup delivery: sends messages

More C# diagrams: azure/azure-functions-host · jayfunc/betterlyrics · germancoding/synctrayzor · microsoft/sbom-tool · microsoft/powerapps-samples

Drawn by GitDiagram on September 28, 2026 from the repository's file tree, README and source files. Read as Markdown ·