Implement .NET Aspire orchestration in Chapter 4

[Copilot]

📋 Description

Adds .NET Aspire orchestration for Chapter 4, mirroring the implementation from Chapter 3 (PR #227). Provides local development orchestration for PostgreSQL and RabbitMQ.

AppHost Project

Created Fitnet.AppHost with orchestration for:

• PostgreSQL 14.3 with pgAdmin
• RabbitMQ with management plugin
• Fitnet modular monolith
• Contracts microservice

var postgres = builder.AddPostgres("postgres")
    .WithImage("postgres", "14.3")
    .WithPgAdmin();

var fitnetDatabase = postgres.AddDatabase("fitnetsdb", "fitnet");
var rabbitmq = builder.AddRabbitMQ("rabbitmq").WithManagementPlugin();

builder.AddProject<Fitnet>("fitnet-modular-monolith")
    .WithReference(fitnetDatabase, "Database__ConnectionString")
    .WithReference(rabbitmq, "EventBus__ConnectionString")
    .WaitFor(postgres)
    .WaitFor(rabbitmq);

EventBus Connection String Support

Updated EventBusModule.cs in both Fitnet.Passes.Api and Fitnet.Contracts to parse Aspire-provided connection strings:

var uri = options.Value.Uri;
var username = options.Value.Username;
var password = options.Value.Password;

if (!string.IsNullOrEmpty(uri))
{
    factoryConfigurator.Host(uri, h =>
    {
        if (!string.IsNullOrEmpty(username)) h.Username(username);
        if (!string.IsNullOrEmpty(password)) h.Password(password);
    });
}

Usage

cd Fitnet.AppHost
dotnet run

📦 PR Includes

• Feature added 🆕
• Bug fix 🐛
• Code refactor 🔄
• Documentation update 📚
• Tests added/updated 🧪
• Other: (describe)

🚫 PR Does Not Include

• Breaking changes ❌
• Major architectural changes 🏗️
• Unrelated features/tasks 🚫

💡 Additional Notes

Fully backward compatible with docker-compose workflow. No changes to business logic, Program.cs, or tests. AppHost includes package versions directly to avoid conflicts with existing Central Package Management in subdirectories.

Stats: 6 files changed, 118 insertions(+)

Original prompt

#227 perform similar change with aspire in chapter 4 same change

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