Aspire.Azure.Messaging.ServiceBus

Aspire.Azure.Messaging.ServiceBus

Registers a ServiceBusClient in the DI container for connecting to Azure Service Bus.

Getting started

Prerequisites

• Azure subscription - create one for free
• Azure Service Bus namespace, learn more about how to add a Service Bus namespace. Alternatively, you can use a connection string, which is not recommended in production environments.

Install the package

Install the .NET Aspire Azure Service Bus library with NuGet:

dotnet add package Aspire.Azure.Messaging.ServiceBus

Usage example

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

builder.AddAzureServiceBusClient("sb");

You can then retrieve the ServiceBusClient instance using dependency injection. For example, to retrieve the client from a Web API controller:

private readonly ServiceBusClient _client;

public ProductsController(ServiceBusClient client)
{
    _client = client;
}

See the Azure.Messaging.ServiceBus documentation for examples on using the ServiceBusClient.

Configuration

The .NET Aspire Azure Service Bus library provides multiple options to configure the Azure Service Bus connection based on the requirements and conventions of your project. Note that either a Namespace or a ConnectionString is a required to be supplied.

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.AddAzureServiceBusClient():

builder.AddAzureServiceBusClient("serviceBusConnectionName");

And then the connection information will be retrieved from the ConnectionStrings configuration section. Two connection formats are supported:

Fully Qualified Namespace

The recommended approach is to use a fully qualified namespace, which works with the AzureMessagingServiceBusSettings.Credential property to establish a connection. If no credential is configured, the DefaultAzureCredential is used.

{
  "ConnectionStrings": {
    "serviceBusConnectionName": "{your_namespace}.servicebus.windows.net"
  }
}

Connection string

Alternatively, a connection string can be used.

{
  "ConnectionStrings": {
    "serviceBusConnectionName": "Endpoint=sb://mynamespace.servicebus.windows.net/;SharedAccessKeyName=accesskeyname;SharedAccessKey=accesskey"
  }
}

Use configuration providers

The .NET Aspire Azure Service Bus library supports Microsoft.Extensions.Configuration. It loads the AzureMessagingServiceBusSettings and ServiceBusClientOptions from configuration by using the Aspire:Azure:Messaging:ServiceBus key. Example appsettings.json that configures some of the options:

{
  "Aspire": {
    "Azure": {
      "Messaging": {
        "ServiceBus": {
          "HealthCheckQueueName": "myQueue",
          "Tracing": true,
          "ClientOptions": {
            "Identifier": "CLIENT_ID"
          }
        }
      }
    }
  }
}

Use inline delegates

You can also pass the Action<AzureMessagingServiceBusSettings> configureSettings delegate to set up some or all the options inline, for example to configure the health check queue name from code:

builder.AddAzureServiceBusClient("sb", settings => settings.HealthCheckQueueName = "myQueue");

You can also setup the ServiceBusClientOptions using the optional Action<IAzureClientBuilder<ServiceBusClient, ServiceBusClientOptions>> configureClientBuilder parameter of the AddAzureServiceBusClient method. For example, to set the client ID for this client:

builder.AddAzureServiceBusClient("sb", configureClientBuilder: clientBuilder => clientBuilder.ConfigureOptions(options => options.Identifier = "CLIENT_ID"));

AppHost extensions

In your AppHost project, install the Aspire Azure Service Bus Hosting library with NuGet:

dotnet add package Aspire.Hosting.Azure.ServiceBus

Then, in the Program.cs file of AppHost, add a Service Bus connection and consume the connection using the following methods:

var serviceBus = builder.AddAzureServiceBus("sb");

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

The AddAzureServiceBus method will read connection information from the AppHost's configuration (for example, from "user secrets") under the ConnectionStrings:sb config key. The WithReference method passes that connection information into a connection string named sb in the MyService project. In the Program.cs file of MyService, the connection can be consumed using:

builder.AddAzureServiceBusClient("sb");

Additional documentation

• https://github.com/Azure/azure-sdk-for-net/blob/main/sdk/servicebus/Azure.Messaging.ServiceBus/README.md
• https://github.com/dotnet/aspire/tree/main/src/Components/README.md

Feedback & contributing

https://github.com/dotnet/aspire