Aspire.MySqlConnector library

Registers MySqlDataSource in the DI container for connecting MySQL database. Enables corresponding health check, metrics, logging and telemetry.

Getting started

Prerequisites

• MySQL database and connection string for accessing the database.

Install the package

Install the .NET Aspire MySQL library with NuGet:

dotnet add package Aspire.MySqlConnector

Usage example

In the Program.cs file of your project, call the AddMyDataSource extension method to register a MySqlDataSource for use via the dependency injection container. The method takes a connection name parameter.

builder.AddMySqlDataSource("server=mysql;user id=myuser;password=mypass");

You can then retrieve a MySqlConnection instance using dependency injection. For example, to retrieve a connection from a Web API controller:

private readonly MySqlConnection _connection;

public ProductsController(MySqlConnection connection)
{
    _connection = connection;
}

Configuration

The .NET Aspire MySQL component provides multiple options to configure the database connection based on the requirements and conventions of your project.

Use a connection string

When using a connection string from the ConnectionStrings configuration section, you can provide the name of the connection string when calling builder.AddMySqlDataSource():

builder.AddMySqlDataSource("myConnection");

And then the connection string will be retrieved from the ConnectionStrings configuration section:

{
  "ConnectionStrings": {
    "myConnection": "Server=mysql;Database=test"
  }
}

See the ConnectionString documentation for more information on how to format this connection string.

Use configuration providers

The .NET Aspire MySQL component supports Microsoft.Extensions.Configuration. It loads the MySqlConnectorSettings from configuration by using the Aspire:MySqlConnector key. Example appsettings.json that configures some of the options:

{
  "Aspire": {
    "MySqlConnector": {
      "DisableHealthChecks": true,
      "DisableTracing": true
    }
  }
}

Use inline delegates

Also you can pass the Action<MySqlConnectorSettings> configureSettings delegate to set up some or all the options inline, for example to disable health checks from code:

builder.AddMySqlDataSource("mysql", settings => settings.DisableHealthChecks = true);

AppHost extensions

In your AppHost project, install the Aspire.Hosting.MySql library with NuGet:

dotnet add package Aspire.Hosting.MySql

Then, in the Program.cs file of AppHost, register a MySQL database and consume the connection using the following methods:

var mysqldb = builder.AddMySql("mysql").AddDatabase("mysqldb");

var myService = builder.AddProject<Projects.MyService>()
                       .WithReference(mysqldb);

The WithReference method configures a connection in the MyService project named mysqldb. In the Program.cs file of MyService, the database connection can be consumed using:

builder.AddMySqlDataSource("mysqldb");

Additional documentation

• https://mysqlconnector.net/tutorials/basic-api/
• https://github.com/dotnet/aspire/tree/main/src/Components/README.md

Feedback & contributing

https://github.com/dotnet/aspire