├── .gitignore
├── LICENSE
├── README.md
├── assets
└── IconNuget.png
├── samples
├── SampleApp
│ ├── Ping.cs
│ ├── PingHandler.cs
│ ├── Program.cs
│ ├── Properties
│ │ └── launchSettings.json
│ ├── SampleApp.csproj
│ └── SampleApp.sln
└── SampleModular
│ ├── Modules
│ ├── Cadastro
│ │ ├── Cadastro.csproj
│ │ ├── ClienteService.cs
│ │ ├── Commands
│ │ │ ├── CadastrarClienteCommand.cs
│ │ │ └── ExcluirClienteCommand.cs
│ │ ├── Handlers
│ │ │ └── ClienteHandler.cs
│ │ └── IClienteService.cs
│ ├── Crm
│ │ ├── Crm.csproj
│ │ └── Handlers
│ │ │ └── NotificadorHandler.cs
│ └── Financeiro
│ │ ├── Financeiro.csproj
│ │ └── Handlers
│ │ └── GestaoContaHandler.cs
│ ├── SampleModular.sln
│ ├── SharedKernel
│ ├── Events
│ │ ├── ClienteCadastradoEvent.cs
│ │ └── ClienteExcluidoEvent.cs
│ └── SharedKernel.csproj
│ └── WebApi
│ ├── Program.cs
│ ├── Properties
│ └── launchSettings.json
│ └── WebApi.csproj
└── src
├── NetDevPack.SimpleMediator.Core
├── Extensions
│ └── ServiceCollectionExtensions.cs
├── Implementation
│ └── Mediator.cs
├── Interfaces
│ ├── IMediator.cs
│ ├── INotification.cs
│ ├── INotificationHandler.cs
│ ├── IRequest.cs
│ └── IRequestHandler.cs
└── NetDevPack.SimpleMediator.Core.csproj
└── NetDevPack.SimpleMediator.sln
/.gitignore:
--------------------------------------------------------------------------------
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401 |
--------------------------------------------------------------------------------
/LICENSE:
--------------------------------------------------------------------------------
1 | MIT License
2 |
3 | Copyright (c) 2025 NetDevPack
4 |
5 | Permission is hereby granted, free of charge, to any person obtaining a copy
6 | of this software and associated documentation files (the "Software"), to deal
7 | in the Software without restriction, including without limitation the rights
8 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
9 | copies of the Software, and to permit persons to whom the Software is
10 | furnished to do so, subject to the following conditions:
11 |
12 | The above copyright notice and this permission notice shall be included in all
13 | copies or substantial portions of the Software.
14 |
15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21 | SOFTWARE.
22 |
--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
1 |
2 |
3 | # SimpleMediator
4 |
5 | A lightweight and straightforward mediator implementation for .NET applications, facilitating in-process messaging with minimal setup.
6 |
7 | | Package | Version | Popularity |
8 | | ------- | ----- | ----- |
9 | | `NetDevPack.SimpleMediator` | [](https://nuget.org/packages/NetDevPack.SimpleMediator) | [](https://nuget.org/packages/NetDevPack.SimpleMediator) |
10 |
11 |
12 | ## Give a Star! ⭐
13 |
14 | If you found this project helpful or it assisted you in any way, please give it a star. It helps to support the project and the developers.
15 |
16 | ## Samples
17 |
18 | You can find complete example projects demonstrating how to use the SimpleMediator in the [`/samples`](./samples) folder.
19 |
20 | These include:
21 |
22 | - ✅ Basic usage with `Send` and `Publish`
23 | - ✅ Modular application structure
24 | - ✅ Manual and automatic registration of handlers
25 |
26 | Feel free to explore and run them to see how the mediator works in different scenarios.
27 |
28 | ## Getting Started
29 |
30 | ### Installation
31 |
32 | You can install the SimpleMediator package via NuGet Package Manager or the .NET CLI:
33 |
34 | ```bash
35 | dotnet add package NetDevPack.SimpleMediator
36 | ```
37 |
38 | ### Using Contracts-Only Package
39 |
40 | To reference only the contracts for SimpleMediator, which includes:
41 |
42 | - `IRequest` (including generic variants)
43 | - Represents a command or query that expects a single response
44 | - `INotification`
45 | - Represents an event broadcast to multiple handlers (if any)
46 |
47 | ### Advanced Usage: Request + Notification
48 |
49 | This example demonstrates how to combine a `Request` (command/query) and a `Notification` (event) in a real-world use case.
50 |
51 | > ✅ This scenario uses only `Microsoft.Extensions.DependencyInjection.Abstractions` for DI registration — no framework-specific packages.
52 |
53 | ---
54 |
55 | #### 1. Define the Request and Notification
56 |
57 | ```csharp
58 | public class CreateCustomerCommand : IRequest
59 | {
60 | public string Name { get; set; }
61 | }
62 |
63 | public class CustomerCreatedEvent : INotification
64 | {
65 | public Guid CustomerId { get; }
66 |
67 | public CustomerCreatedEvent(Guid customerId)
68 | {
69 | CustomerId = customerId;
70 | }
71 | }
72 | ```
73 |
74 | ---
75 |
76 | #### 2. Implement the Handlers
77 |
78 | ```csharp
79 | public class CreateCustomerHandler : IRequestHandler
80 | {
81 | private readonly IMediator _mediator;
82 |
83 | public CreateCustomerHandler(IMediator mediator)
84 | {
85 | _mediator = mediator;
86 | }
87 |
88 | public async Task Handle(CreateCustomerCommand request, CancellationToken cancellationToken)
89 | {
90 | var id = Guid.NewGuid();
91 |
92 | // Simulate persistence...
93 |
94 | // Publish event
95 | await _mediator.Publish(new CustomerCreatedEvent(id), cancellationToken);
96 |
97 | return $"Customer '{request.Name}' created with ID {id}";
98 | }
99 | }
100 |
101 | public class SendWelcomeEmailHandler : INotificationHandler
102 | {
103 | public Task Handle(CustomerCreatedEvent notification, CancellationToken cancellationToken)
104 | {
105 | Console.WriteLine($"Sending welcome email to customer {notification.CustomerId}");
106 | return Task.CompletedTask;
107 | }
108 | }
109 | ```
110 |
111 | ---
112 |
113 | #### 3. Register the Handlers (Dependency Injection)
114 |
115 | You can register everything manually if you want full control:
116 |
117 | ```csharp
118 | services.AddSingleton();
119 |
120 | services.AddTransient, CreateCustomerHandler>();
121 | services.AddTransient, SendWelcomeEmailHandler>();
122 | ```
123 |
124 | Or use assembly scanning with:
125 |
126 | ```csharp
127 | services.AddSimpleMediator();
128 | ```
129 |
130 | ---
131 |
132 | #### 4. Execute the Flow
133 |
134 | ```csharp
135 | public class CustomerAppService
136 | {
137 | private readonly IMediator _mediator;
138 |
139 | public CustomerAppService(IMediator mediator)
140 | {
141 | _mediator = mediator;
142 | }
143 |
144 | public async Task CreateCustomer(string name)
145 | {
146 | return await _mediator.Send(new CreateCustomerCommand { Name = name });
147 | }
148 | }
149 | ```
150 |
151 | ---
152 |
153 | When the `CreateCustomer` method is called:
154 |
155 | 1. `CreateCustomerHandler` handles the request
156 | 2. It creates and persists the customer (simulated)
157 | 3. It publishes a `CustomerCreatedEvent`
158 | 4. `SendWelcomeEmailHandler` handles the event
159 |
160 | This structure cleanly separates **commands** (which change state and return a result) from **notifications** (which communicate to the rest of the system that something happened).
161 |
162 | ## Features
163 |
164 | - **Lightweight**: Minimal dependencies and straightforward setup.
165 | - **In-Process Messaging**: Facilitates in-process communication between components.
166 | - **Handler Registration**: Automatically registers handlers from specified assemblies.
167 |
168 | ## Compatibility
169 |
170 | NetDevPack.SimpleMediator targets .NET Standard 2.1, and is compatible with .NET Core 3.1+, .NET 5+, .NET 6+, .NET 7+, .NET 8, and newer versions of the .NET runtime.
171 |
172 | ## About
173 |
174 | NetDevPack.SimpleMediator was developed by [Eduardo Pires](https://desenvolvedor.io) under the MIT license.
175 |
--------------------------------------------------------------------------------
/assets/IconNuget.png:
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https://raw.githubusercontent.com/NetDevPack/SimpleMediator/507bf3e344120ac02272b8f4d9838044ea89af71/assets/IconNuget.png
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/samples/SampleApp/Ping.cs:
--------------------------------------------------------------------------------
1 | using NetDevPack.SimpleMediator.Core.Interfaces;
2 |
3 | public class Ping : IRequest
4 | {
5 | public string Message { get; set; } = "Ping!";
6 | }
--------------------------------------------------------------------------------
/samples/SampleApp/PingHandler.cs:
--------------------------------------------------------------------------------
1 | using NetDevPack.SimpleMediator.Core.Interfaces;
2 |
3 | public class PingHandler : IRequestHandler
4 | {
5 | public Task Handle(Ping request, CancellationToken cancellationToken)
6 | {
7 | return Task.FromResult($"Pong: {request.Message}");
8 | }
9 | }
--------------------------------------------------------------------------------
/samples/SampleApp/Program.cs:
--------------------------------------------------------------------------------
1 | using NetDevPack.SimpleMediator.Core.Extensions;
2 | using NetDevPack.SimpleMediator.Core.Interfaces;
3 |
4 | var builder = WebApplication.CreateBuilder(args);
5 | builder.Services.AddSimpleMediator(typeof(Program).Assembly);
6 |
7 | var app = builder.Build();
8 |
9 | app.MapGet("/", async (IMediator mediator) =>
10 | {
11 | var result = await mediator.Send(new Ping { Message = "Hello Mediator" });
12 | return Results.Ok(result);
13 | });
14 |
15 | app.Run();
--------------------------------------------------------------------------------
/samples/SampleApp/Properties/launchSettings.json:
--------------------------------------------------------------------------------
1 | {
2 | "profiles": {
3 | "SampleApp": {
4 | "commandName": "Project",
5 | "launchBrowser": true,
6 | "environmentVariables": {
7 | "ASPNETCORE_ENVIRONMENT": "Development"
8 | },
9 | "applicationUrl": "https://localhost:61455;http://localhost:61456"
10 | }
11 | }
12 | }
--------------------------------------------------------------------------------
/samples/SampleApp/SampleApp.csproj:
--------------------------------------------------------------------------------
1 |
2 |
3 |
4 | net8.0
5 | enable
6 | enable
7 |
8 |
9 |
10 |
11 |
12 |
13 |
--------------------------------------------------------------------------------
/samples/SampleApp/SampleApp.sln:
--------------------------------------------------------------------------------
1 |
2 | Microsoft Visual Studio Solution File, Format Version 12.00
3 | # Visual Studio Version 17
4 | VisualStudioVersion = 17.13.35919.96
5 | MinimumVisualStudioVersion = 10.0.40219.1
6 | Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SampleApp", "SampleApp.csproj", "{0035CB67-ADC7-446D-9358-4B84B1E8C153}"
7 | EndProject
8 | Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Project Reference", "Project Reference", "{02EA681E-C7D8-13C7-8484-4AC65E1B71E8}"
9 | EndProject
10 | Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "NetDevPack.SimpleMediator.Core", "..\..\src\NetDevPack.SimpleMediator.Core\NetDevPack.SimpleMediator.Core.csproj", "{EFB444B7-6825-50E8-1CCC-A7D05BC852FC}"
11 | EndProject
12 | Global
13 | GlobalSection(SolutionConfigurationPlatforms) = preSolution
14 | Debug|Any CPU = Debug|Any CPU
15 | Release|Any CPU = Release|Any CPU
16 | EndGlobalSection
17 | GlobalSection(ProjectConfigurationPlatforms) = postSolution
18 | {0035CB67-ADC7-446D-9358-4B84B1E8C153}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
19 | {0035CB67-ADC7-446D-9358-4B84B1E8C153}.Debug|Any CPU.Build.0 = Debug|Any CPU
20 | {0035CB67-ADC7-446D-9358-4B84B1E8C153}.Release|Any CPU.ActiveCfg = Release|Any CPU
21 | {0035CB67-ADC7-446D-9358-4B84B1E8C153}.Release|Any CPU.Build.0 = Release|Any CPU
22 | {EFB444B7-6825-50E8-1CCC-A7D05BC852FC}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
23 | {EFB444B7-6825-50E8-1CCC-A7D05BC852FC}.Debug|Any CPU.Build.0 = Debug|Any CPU
24 | {EFB444B7-6825-50E8-1CCC-A7D05BC852FC}.Release|Any CPU.ActiveCfg = Release|Any CPU
25 | {EFB444B7-6825-50E8-1CCC-A7D05BC852FC}.Release|Any CPU.Build.0 = Release|Any CPU
26 | EndGlobalSection
27 | GlobalSection(SolutionProperties) = preSolution
28 | HideSolutionNode = FALSE
29 | EndGlobalSection
30 | GlobalSection(NestedProjects) = preSolution
31 | {EFB444B7-6825-50E8-1CCC-A7D05BC852FC} = {02EA681E-C7D8-13C7-8484-4AC65E1B71E8}
32 | EndGlobalSection
33 | GlobalSection(ExtensibilityGlobals) = postSolution
34 | SolutionGuid = {BFFAFD81-64E9-4E48-B6AD-52AB2CBF45D4}
35 | EndGlobalSection
36 | EndGlobal
37 |
--------------------------------------------------------------------------------
/samples/SampleModular/Modules/Cadastro/Cadastro.csproj:
--------------------------------------------------------------------------------
1 |
2 |
3 | net8.0
4 | enable
5 |
6 |
7 |
8 |
9 |
--------------------------------------------------------------------------------
/samples/SampleModular/Modules/Cadastro/ClienteService.cs:
--------------------------------------------------------------------------------
1 | using Cadastro.Commands;
2 | using NetDevPack.SimpleMediator.Core.Interfaces;
3 | using System.Threading.Tasks;
4 |
5 | namespace Cadastro;
6 |
7 | public class ClienteService : IClienteService
8 | {
9 | private readonly IMediator _mediator;
10 |
11 | public ClienteService(IMediator mediator)
12 | {
13 | _mediator = mediator;
14 | }
15 |
16 | public async Task CadastrarCliente(CadastrarClienteCommand cliente)
17 | {
18 | var resultado = await _mediator.Send(new CadastrarClienteCommand {Id = cliente.Id, Nome = cliente.Nome });
19 | return resultado;
20 | }
21 |
22 | public async Task ExcluirCliente(ExcluirClienteCommand cliente)
23 | {
24 | var resultado = await _mediator.Send(new ExcluirClienteCommand { Id = cliente.Id });
25 | return resultado;
26 | }
27 | }
--------------------------------------------------------------------------------
/samples/SampleModular/Modules/Cadastro/Commands/CadastrarClienteCommand.cs:
--------------------------------------------------------------------------------
1 | using NetDevPack.SimpleMediator.Core.Interfaces;
2 | using System;
3 |
4 | namespace Cadastro.Commands;
5 |
6 | public class CadastrarClienteCommand : IRequest
7 | {
8 | public Guid Id { get; set; }
9 | public string Nome { get; set; }
10 | }
11 |
--------------------------------------------------------------------------------
/samples/SampleModular/Modules/Cadastro/Commands/ExcluirClienteCommand.cs:
--------------------------------------------------------------------------------
1 | using NetDevPack.SimpleMediator.Core.Interfaces;
2 | using System;
3 |
4 | namespace Cadastro.Commands;
5 |
6 | public class ExcluirClienteCommand : IRequest
7 | {
8 | public Guid Id { get; set; }
9 | }
10 |
--------------------------------------------------------------------------------
/samples/SampleModular/Modules/Cadastro/Handlers/ClienteHandler.cs:
--------------------------------------------------------------------------------
1 | using Cadastro.Commands;
2 | using NetDevPack.SimpleMediator.Core.Interfaces;
3 | using System.Threading.Tasks;
4 | using System.Threading;
5 | using System;
6 |
7 | namespace Cadastro.Handlers;
8 |
9 | public class ClienteHandler :
10 | IRequestHandler,
11 | IRequestHandler
12 | {
13 | private readonly IMediator _mediator;
14 |
15 | public ClienteHandler(IMediator mediator)
16 | {
17 | _mediator = mediator;
18 | }
19 |
20 | public async Task Handle(CadastrarClienteCommand request, CancellationToken cancellationToken)
21 | {
22 | // simula persistência (poderia usar um repositório aqui)
23 | request.Id = Guid.NewGuid();
24 |
25 | // dispara evento após criação
26 | await _mediator.Publish(new ClienteCadastradoEvent(request.Id), cancellationToken);
27 |
28 | return $"Cliente {request.Nome} cadastrado com sucesso.";
29 | }
30 |
31 | public async Task Handle(ExcluirClienteCommand request, CancellationToken cancellationToken)
32 | {
33 | // dispara evento após criação
34 | await _mediator.Publish(new ClienteExcluidoEvent(request.Id), cancellationToken);
35 |
36 | return true;
37 | }
38 | }
--------------------------------------------------------------------------------
/samples/SampleModular/Modules/Cadastro/IClienteService.cs:
--------------------------------------------------------------------------------
1 | using Cadastro.Commands;
2 | using System.Threading.Tasks;
3 |
4 | namespace Cadastro
5 | {
6 | public interface IClienteService
7 | {
8 | Task CadastrarCliente(CadastrarClienteCommand cliente);
9 | Task ExcluirCliente(ExcluirClienteCommand cliente);
10 | }
11 | }
--------------------------------------------------------------------------------
/samples/SampleModular/Modules/Crm/Crm.csproj:
--------------------------------------------------------------------------------
1 |
2 |
3 | net8.0
4 | enable
5 |
6 |
7 |
8 |
9 |
--------------------------------------------------------------------------------
/samples/SampleModular/Modules/Crm/Handlers/NotificadorHandler.cs:
--------------------------------------------------------------------------------
1 | using NetDevPack.SimpleMediator.Core.Interfaces;
2 | using System;
3 | using System.Threading;
4 | using System.Threading.Tasks;
5 |
6 | namespace Crm.Handlers;
7 |
8 | public class NotificadorHandler :
9 | INotificationHandler,
10 | INotificationHandler
11 | {
12 | public Task Handle(ClienteCadastradoEvent notification, CancellationToken cancellationToken)
13 | {
14 | Console.WriteLine($"[CRM] Enviando e-mail de boas-vindas ao cliente {notification.ClienteId}");
15 | return Task.CompletedTask;
16 | }
17 |
18 | public Task Handle(ClienteExcluidoEvent notification, CancellationToken cancellationToken)
19 | {
20 | Console.WriteLine($"[CRM] Enviando e-mail de despedidas ao cliente {notification.ClienteId}");
21 | return Task.CompletedTask;
22 | }
23 | }
--------------------------------------------------------------------------------
/samples/SampleModular/Modules/Financeiro/Financeiro.csproj:
--------------------------------------------------------------------------------
1 |
2 |
3 | net8.0
4 | enable
5 |
6 |
7 |
8 |
9 |
--------------------------------------------------------------------------------
/samples/SampleModular/Modules/Financeiro/Handlers/GestaoContaHandler.cs:
--------------------------------------------------------------------------------
1 | using NetDevPack.SimpleMediator.Core.Interfaces;
2 | using System;
3 | using System.Threading;
4 | using System.Threading.Tasks;
5 |
6 | namespace Financeiro.Handlers;
7 |
8 | public class GestaoContaHandler :
9 | INotificationHandler,
10 | INotificationHandler
11 | {
12 | public Task Handle(ClienteCadastradoEvent notification, CancellationToken cancellationToken)
13 | {
14 | Console.WriteLine($"[Financeiro] Criando conta para cliente {notification.ClienteId}");
15 | return Task.CompletedTask;
16 | }
17 |
18 | public Task Handle(ClienteExcluidoEvent notification, CancellationToken cancellationToken)
19 | {
20 | Console.WriteLine($"[Financeiro] Excluindo conta do cliente {notification.ClienteId}");
21 | return Task.CompletedTask;
22 | }
23 | }
--------------------------------------------------------------------------------
/samples/SampleModular/SampleModular.sln:
--------------------------------------------------------------------------------
1 |
2 | Microsoft Visual Studio Solution File, Format Version 12.00
3 | # Visual Studio Version 17
4 | VisualStudioVersion = 17.13.35919.96
5 | MinimumVisualStudioVersion = 10.0.40219.1
6 | Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "WebApi", "WebApi\WebApi.csproj", "{41FA5442-7321-6176-C48B-B0AABCA09A7D}"
7 | EndProject
8 | Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Domain", "Domain", "{02EA681E-C7D8-13C7-8484-4AC65E1B71E8}"
9 | EndProject
10 | Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Cadastro", "Modules\Cadastro\Cadastro.csproj", "{93804936-16E9-D23F-3CF1-AF244FE9856F}"
11 | EndProject
12 | Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Crm", "Modules\Crm\Crm.csproj", "{FE33E0B0-F476-75B7-FF47-FCA4908E9C14}"
13 | EndProject
14 | Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Financeiro", "Modules\Financeiro\Financeiro.csproj", "{51818623-018A-D5AD-D259-C0B306E58BFE}"
15 | EndProject
16 | Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SharedKernel", "SharedKernel\SharedKernel.csproj", "{C71DB168-5872-1C86-3B8B-5FDF83D4892C}"
17 | EndProject
18 | Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Shared", "Shared", "{F1320D1E-3342-4F4B-A827-121F3D8AF2E5}"
19 | EndProject
20 | Global
21 | GlobalSection(SolutionConfigurationPlatforms) = preSolution
22 | Debug|Any CPU = Debug|Any CPU
23 | Release|Any CPU = Release|Any CPU
24 | EndGlobalSection
25 | GlobalSection(ProjectConfigurationPlatforms) = postSolution
26 | {41FA5442-7321-6176-C48B-B0AABCA09A7D}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
27 | {41FA5442-7321-6176-C48B-B0AABCA09A7D}.Debug|Any CPU.Build.0 = Debug|Any CPU
28 | {41FA5442-7321-6176-C48B-B0AABCA09A7D}.Release|Any CPU.ActiveCfg = Release|Any CPU
29 | {41FA5442-7321-6176-C48B-B0AABCA09A7D}.Release|Any CPU.Build.0 = Release|Any CPU
30 | {93804936-16E9-D23F-3CF1-AF244FE9856F}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
31 | {93804936-16E9-D23F-3CF1-AF244FE9856F}.Debug|Any CPU.Build.0 = Debug|Any CPU
32 | {93804936-16E9-D23F-3CF1-AF244FE9856F}.Release|Any CPU.ActiveCfg = Release|Any CPU
33 | {93804936-16E9-D23F-3CF1-AF244FE9856F}.Release|Any CPU.Build.0 = Release|Any CPU
34 | {FE33E0B0-F476-75B7-FF47-FCA4908E9C14}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
35 | {FE33E0B0-F476-75B7-FF47-FCA4908E9C14}.Debug|Any CPU.Build.0 = Debug|Any CPU
36 | {FE33E0B0-F476-75B7-FF47-FCA4908E9C14}.Release|Any CPU.ActiveCfg = Release|Any CPU
37 | {FE33E0B0-F476-75B7-FF47-FCA4908E9C14}.Release|Any CPU.Build.0 = Release|Any CPU
38 | {51818623-018A-D5AD-D259-C0B306E58BFE}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
39 | {51818623-018A-D5AD-D259-C0B306E58BFE}.Debug|Any CPU.Build.0 = Debug|Any CPU
40 | {51818623-018A-D5AD-D259-C0B306E58BFE}.Release|Any CPU.ActiveCfg = Release|Any CPU
41 | {51818623-018A-D5AD-D259-C0B306E58BFE}.Release|Any CPU.Build.0 = Release|Any CPU
42 | {C71DB168-5872-1C86-3B8B-5FDF83D4892C}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
43 | {C71DB168-5872-1C86-3B8B-5FDF83D4892C}.Debug|Any CPU.Build.0 = Debug|Any CPU
44 | {C71DB168-5872-1C86-3B8B-5FDF83D4892C}.Release|Any CPU.ActiveCfg = Release|Any CPU
45 | {C71DB168-5872-1C86-3B8B-5FDF83D4892C}.Release|Any CPU.Build.0 = Release|Any CPU
46 | EndGlobalSection
47 | GlobalSection(SolutionProperties) = preSolution
48 | HideSolutionNode = FALSE
49 | EndGlobalSection
50 | GlobalSection(NestedProjects) = preSolution
51 | {93804936-16E9-D23F-3CF1-AF244FE9856F} = {02EA681E-C7D8-13C7-8484-4AC65E1B71E8}
52 | {FE33E0B0-F476-75B7-FF47-FCA4908E9C14} = {02EA681E-C7D8-13C7-8484-4AC65E1B71E8}
53 | {51818623-018A-D5AD-D259-C0B306E58BFE} = {02EA681E-C7D8-13C7-8484-4AC65E1B71E8}
54 | {C71DB168-5872-1C86-3B8B-5FDF83D4892C} = {F1320D1E-3342-4F4B-A827-121F3D8AF2E5}
55 | EndGlobalSection
56 | GlobalSection(ExtensibilityGlobals) = postSolution
57 | SolutionGuid = {DE2A29F1-BA6D-4834-8371-B0BDC4724822}
58 | EndGlobalSection
59 | EndGlobal
60 |
--------------------------------------------------------------------------------
/samples/SampleModular/SharedKernel/Events/ClienteCadastradoEvent.cs:
--------------------------------------------------------------------------------
1 | using NetDevPack.SimpleMediator.Core.Interfaces;
2 | using System;
3 |
4 | public record ClienteCadastradoEvent(Guid ClienteId) : INotification;
5 |
6 |
--------------------------------------------------------------------------------
/samples/SampleModular/SharedKernel/Events/ClienteExcluidoEvent.cs:
--------------------------------------------------------------------------------
1 | using NetDevPack.SimpleMediator.Core.Interfaces;
2 | using System;
3 |
4 | public record ClienteExcluidoEvent(Guid ClienteId) : INotification;
5 |
6 |
--------------------------------------------------------------------------------
/samples/SampleModular/SharedKernel/SharedKernel.csproj:
--------------------------------------------------------------------------------
1 |
2 |
3 | net8.0
4 | enable
5 |
6 |
7 |
8 |
9 |
--------------------------------------------------------------------------------
/samples/SampleModular/WebApi/Program.cs:
--------------------------------------------------------------------------------
1 | using Cadastro;
2 | using Cadastro.Commands;
3 | using Cadastro.Handlers;
4 | using Crm.Handlers;
5 | using Financeiro.Handlers;
6 | using Microsoft.AspNetCore.Mvc;
7 | using NetDevPack.SimpleMediator.Core.Extensions;
8 | using NetDevPack.SimpleMediator.Core.Implementation;
9 | using NetDevPack.SimpleMediator.Core.Interfaces;
10 |
11 | var builder = WebApplication.CreateBuilder(args);
12 | var services = builder.Services;
13 |
14 | services.AddEndpointsApiExplorer();
15 | services.AddSwaggerGen();
16 |
17 | services.AddScoped();
18 |
19 | // REGISTRO DO MEDIATOR
20 |
21 | // Mais performatico
22 | //builder.Services.AddSimpleMediator("Cadastro", "Crm", "Financeiro", "SharedKernel");
23 |
24 | // Mais custoso
25 | builder.Services.AddSimpleMediator();
26 | //builder.Services.AddSimpleMediator(AppDomain.CurrentDomain.GetAssemblies());
27 |
28 | // Mais trabalhoso
29 | //services.AddSingleton();
30 | //services.AddTransient, ClienteHandler>();
31 | //services.AddTransient, ClienteHandler>();
32 | //services.AddTransient, GestaoContaHandler>();
33 | //services.AddTransient, NotificadorHandler>();
34 | //services.AddTransient, GestaoContaHandler>();
35 | //services.AddTransient, NotificadorHandler>();
36 |
37 | var app = builder.Build();
38 |
39 | if (app.Environment.IsDevelopment())
40 | {
41 | app.UseSwagger();
42 | app.UseSwaggerUI();
43 | }
44 |
45 | app.MapPost("/cadastrar", async ([FromBody] CadastrarClienteCommand command, IClienteService service) =>
46 | {
47 | var resultado = await service.CadastrarCliente(command);
48 | return Results.Ok(resultado);
49 | }).WithName("CadastrarCliente")
50 | .WithTags("Clientes");
51 |
52 | app.MapPost("/excluir", async ([FromBody] ExcluirClienteCommand command, IClienteService service) =>
53 | {
54 | var resultado = await service.ExcluirCliente(command);
55 |
56 | if (!resultado)
57 | return Results.BadRequest($"Problema ao excluir o cliente {command.Id}");
58 |
59 | return Results.Ok(command.Id);
60 |
61 | }).WithName("ExcluirCliente")
62 | .WithTags("Clientes");
63 |
64 | app.Run();
--------------------------------------------------------------------------------
/samples/SampleModular/WebApi/Properties/launchSettings.json:
--------------------------------------------------------------------------------
1 | {
2 | "profiles": {
3 | "WebApi": {
4 | "commandName": "Project",
5 | "launchBrowser": true,
6 | "launchUrl": "swagger",
7 | "environmentVariables": {
8 | "ASPNETCORE_ENVIRONMENT": "Development"
9 | },
10 | "applicationUrl": "https://localhost:61861;http://localhost:61862"
11 | }
12 | }
13 | }
--------------------------------------------------------------------------------
/samples/SampleModular/WebApi/WebApi.csproj:
--------------------------------------------------------------------------------
1 |
2 |
3 | net8.0
4 | enable
5 | enable
6 |
7 |
8 |
9 |
10 |
11 |
12 |
13 |
14 |
15 |
--------------------------------------------------------------------------------
/src/NetDevPack.SimpleMediator.Core/Extensions/ServiceCollectionExtensions.cs:
--------------------------------------------------------------------------------
1 | using Microsoft.Extensions.DependencyInjection;
2 | using System;
3 | using System.Linq;
4 | using System.Reflection;
5 |
6 | namespace NetDevPack.SimpleMediator
7 | {
8 |
9 | public static class ServiceCollectionExtensions
10 | {
11 | public static IServiceCollection AddSimpleMediator(
12 | this IServiceCollection services,
13 | params object[] args)
14 | {
15 | var assemblies = ResolveAssemblies(args);
16 |
17 | services.AddSingleton();
18 |
19 | RegisterHandlers(services, assemblies, typeof(INotificationHandler<>));
20 | RegisterHandlers(services, assemblies, typeof(IRequestHandler<,>));
21 |
22 | return services;
23 | }
24 |
25 | private static Assembly[] ResolveAssemblies(object[] args)
26 | {
27 | // Return ALL
28 | if (args == null || args.Length == 0)
29 | {
30 | return AppDomain.CurrentDomain
31 | .GetAssemblies()
32 | .Where(a => !a.IsDynamic && !string.IsNullOrWhiteSpace(a.FullName))
33 | .ToArray();
34 | }
35 |
36 | // Return all informed (same behavior as above)
37 | if (args.All(a => a is Assembly))
38 | return args.Cast().ToArray();
39 |
40 | // Return filtered by namespace (most performatic)
41 | if (args.All(a => a is string))
42 | {
43 | var prefixes = args.Cast().ToArray();
44 | return AppDomain.CurrentDomain
45 | .GetAssemblies()
46 | .Where(a =>
47 | !a.IsDynamic &&
48 | !string.IsNullOrWhiteSpace(a.FullName) &&
49 | prefixes.Any(p => a.FullName!.StartsWith(p)))
50 | .ToArray();
51 | }
52 |
53 | throw new ArgumentException("Invalid parameters for AddSimpleMediator(). Use: no arguments, Assembly[], or prefix strings.");
54 | }
55 |
56 |
57 | private static void RegisterHandlers(IServiceCollection services, Assembly[] assemblies, Type handlerInterface)
58 | {
59 | var types = assemblies.SelectMany(a => a.GetTypes())
60 | .Where(t => t.IsClass && !t.IsAbstract)
61 | .ToList();
62 |
63 | foreach (var type in types)
64 | {
65 | var interfaces = type.GetInterfaces()
66 | .Where(i =>
67 | i.IsGenericType &&
68 | i.GetGenericTypeDefinition() == handlerInterface);
69 |
70 | foreach (var iface in interfaces)
71 | {
72 | services.AddTransient(iface, type);
73 | }
74 | }
75 | }
76 | }
77 | }
--------------------------------------------------------------------------------
/src/NetDevPack.SimpleMediator.Core/Implementation/Mediator.cs:
--------------------------------------------------------------------------------
1 | using System;
2 | using System.Threading;
3 | using System.Threading.Tasks;
4 | using Microsoft.Extensions.DependencyInjection;
5 |
6 | namespace NetDevPack.SimpleMediator
7 | {
8 |
9 | public class Mediator : IMediator
10 | {
11 | private readonly IServiceProvider _provider;
12 |
13 | public Mediator(IServiceProvider provider)
14 | {
15 | _provider = provider;
16 | }
17 |
18 | public async Task Send(IRequest request, CancellationToken cancellationToken = default)
19 | {
20 | var handlerType = typeof(IRequestHandler<,>).MakeGenericType(request.GetType(), typeof(TResponse));
21 | var handler = _provider.GetService(handlerType);
22 | if (handler == null)
23 | throw new InvalidOperationException($"Handler not found for {request.GetType().Name}");
24 |
25 | return await (Task)handlerType
26 | .GetMethod("Handle")!
27 | .Invoke(handler, new object[] { request, cancellationToken })!;
28 | }
29 |
30 | public async Task Publish(TNotification notification, CancellationToken cancellationToken = default)
31 | where TNotification : INotification
32 | {
33 | var handlerType = typeof(INotificationHandler<>).MakeGenericType(notification.GetType());
34 | var handlers = _provider.GetServices(handlerType);
35 |
36 | foreach (var handler in handlers)
37 | {
38 | await (Task)handlerType
39 | .GetMethod("Handle")!
40 | .Invoke(handler, new object[] { notification, cancellationToken })!;
41 | }
42 | }
43 | }
44 | }
--------------------------------------------------------------------------------
/src/NetDevPack.SimpleMediator.Core/Interfaces/IMediator.cs:
--------------------------------------------------------------------------------
1 | using System.Threading;
2 | using System.Threading.Tasks;
3 |
4 | namespace NetDevPack.SimpleMediator
5 | {
6 |
7 | public interface IMediator
8 | {
9 | Task Send(IRequest request, CancellationToken cancellationToken = default);
10 | Task Publish(TNotification notification, CancellationToken cancellationToken = default)
11 | where TNotification : INotification;
12 | }
13 | }
--------------------------------------------------------------------------------
/src/NetDevPack.SimpleMediator.Core/Interfaces/INotification.cs:
--------------------------------------------------------------------------------
1 | namespace NetDevPack.SimpleMediator
2 | {
3 |
4 | public interface INotification { }
5 | }
--------------------------------------------------------------------------------
/src/NetDevPack.SimpleMediator.Core/Interfaces/INotificationHandler.cs:
--------------------------------------------------------------------------------
1 | using System.Threading;
2 | using System.Threading.Tasks;
3 |
4 | namespace NetDevPack.SimpleMediator
5 | {
6 |
7 | public interface INotificationHandler
8 | where TNotification : INotification
9 | {
10 | Task Handle(TNotification notification, CancellationToken cancellationToken);
11 | }
12 | }
--------------------------------------------------------------------------------
/src/NetDevPack.SimpleMediator.Core/Interfaces/IRequest.cs:
--------------------------------------------------------------------------------
1 | namespace NetDevPack.SimpleMediator
2 | {
3 |
4 | public interface IRequest { }
5 | }
--------------------------------------------------------------------------------
/src/NetDevPack.SimpleMediator.Core/Interfaces/IRequestHandler.cs:
--------------------------------------------------------------------------------
1 | using System.Threading;
2 | using System.Threading.Tasks;
3 |
4 | namespace NetDevPack.SimpleMediator
5 | {
6 |
7 | public interface IRequestHandler
8 | where TRequest : IRequest
9 | {
10 | Task Handle(TRequest request, CancellationToken cancellationToken);
11 | }
12 | }
--------------------------------------------------------------------------------
/src/NetDevPack.SimpleMediator.Core/NetDevPack.SimpleMediator.Core.csproj:
--------------------------------------------------------------------------------
1 |
2 |
3 | netstandard2.1
4 | enable
5 | false
6 | NetDevPack.SimpleMediator
7 | NetDevPack.SimpleMediator
8 | NetDevPack.SimpleMediator
9 | Eduardo Pires
10 | desenvolvedor.io
11 | Simple mediator implementation in .NET, In-process messaging with no dependencies.
12 | Simple mediator implementation in .NET, In-process messaging with no dependencies.
13 | https://github.com/EduardoPires/NetDevPack
14 | IconNuget.png
15 | https://github.com/NetDevPack/SimpleMediator
16 | Public
17 | MIT
18 | 1.2.0
19 | NetDevPack.SimpleMediator
20 | README.md
21 | Mediator, MediatR
22 |
23 |
24 |
25 |
26 |
27 |
28 |
29 |
30 | True
31 |
32 |
33 |
34 | True
35 | \
36 |
37 |
38 |
39 |
--------------------------------------------------------------------------------
/src/NetDevPack.SimpleMediator.sln:
--------------------------------------------------------------------------------
1 |
2 | Microsoft Visual Studio Solution File, Format Version 12.00
3 | # Visual Studio Version 17
4 | VisualStudioVersion = 17.13.35806.99
5 | MinimumVisualStudioVersion = 10.0.40219.1
6 | Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "NetDevPack.SimpleMediator.Core", "NetDevPack.SimpleMediator.Core\NetDevPack.SimpleMediator.Core.csproj", "{CAB8015B-E7BB-1917-5123-90802AFA0891}"
7 | EndProject
8 | Global
9 | GlobalSection(SolutionConfigurationPlatforms) = preSolution
10 | Debug|Any CPU = Debug|Any CPU
11 | Release|Any CPU = Release|Any CPU
12 | EndGlobalSection
13 | GlobalSection(ProjectConfigurationPlatforms) = postSolution
14 | {CAB8015B-E7BB-1917-5123-90802AFA0891}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
15 | {CAB8015B-E7BB-1917-5123-90802AFA0891}.Debug|Any CPU.Build.0 = Debug|Any CPU
16 | {CAB8015B-E7BB-1917-5123-90802AFA0891}.Release|Any CPU.ActiveCfg = Release|Any CPU
17 | {CAB8015B-E7BB-1917-5123-90802AFA0891}.Release|Any CPU.Build.0 = Release|Any CPU
18 | EndGlobalSection
19 | GlobalSection(SolutionProperties) = preSolution
20 | HideSolutionNode = FALSE
21 | EndGlobalSection
22 | GlobalSection(ExtensibilityGlobals) = postSolution
23 | SolutionGuid = {A8F0F30E-9298-40B8-8155-49CCE220AAE1}
24 | EndGlobalSection
25 | EndGlobal
26 |
--------------------------------------------------------------------------------