Aspire.Azure.Storage.Blobs 8.2.2

Aspire.Azure.Storage.Blobs

Registers a BlobServiceClient service as a singleton in the DI container for connecting to Azure Storage Blobs. Enables corresponding health checks, logging and telemetry.

Getting started

Prerequisites

• Azure subscription - create one for free
• Azure Storage account - create a storage account

Install the package

Install the .NET Aspire Azure Storage Blobs library with NuGet:

dotnet add package Aspire.Azure.Storage.Blobs

Usage example

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

builder.AddAzureBlobClient("blobs");

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

private readonly BlobServiceClient _client;

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

See the Azure.Storage.Blobs documentation for examples on using the BlobServiceClient.

Configuration

The .NET Aspire Azure Storage Blobs library provides multiple options to configure the Azure Storage Blob connection based on the requirements and conventions of your project. Note that either a ServiceUri 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.AddAzureBlobClient():

builder.AddAzureBlobClient("blobsConnectionName");

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

Service URI

The recommended approach is to use a ServiceUri, which works with the AzureStorageBlobsSettings.Credential property to establish a connection. If no credential is configured, the DefaultAzureCredential is used.

{
  "ConnectionStrings": {
    "blobsConnectionName": "https://{account_name}.blob.core.windows.net/"
  }
}

Connection string

Alternatively, an Azure Storage connection string can be used.

{
  "ConnectionStrings": {
    "blobsConnectionName": "AccountName=myaccount;AccountKey=myaccountkey"
  }
}

Use configuration providers

The .NET Aspire Azure Storage Blobs library supports Microsoft.Extensions.Configuration. It loads the AzureStorageBlobsSettings and BlobClientOptions from configuration by using the Aspire:Azure:Storage:Blobs key. Example appsettings.json that configures some of the options:

{
  "Aspire": {
    "Azure": {
      "Storage": {
        "Blobs": {
          "DisableHealthChecks": true,
          "DisableTracing": false,
          "ClientOptions": {
            "Diagnostics": {
              "ApplicationId": "myapp"
            }
          }
        }
      }
    }
  }
}

Use inline delegates

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

builder.AddAzureBlobClient("blobs", settings => settings.HealthChecks = false);

You can also setup the BlobClientOptions using the optional Action<IAzureClientBuilder<BlobServiceClient, BlobClientOptions>> configureClientBuilder parameter of the AddAzureBlobClient method. For example, to set the first part of "User-Agent" headers for all requests issues by this client:

builder.AddAzureBlobClient("blobs", configureClientBuilder: clientBuilder => clientBuilder.ConfigureOptions(options => options.Diagnostics.ApplicationId = "myapp"));

AppHost extensions

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

dotnet add package Aspire.Hosting.Azure.Storage

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

var blobs = builder.ExecutionContext.IsPublishMode
    ? builder.AddAzureStorage("storage").AddBlobs("blobs")
    : builder.AddConnectionString("blobs");

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

The AddBlobs method adds an Azure Storage blob resource to the builder. Or AddConnectionString method can be used be used to read connection information from the AppHost's configuration (for example, from "user secrets") under the ConnectionStrings:blobs config key. The WithReference method passes that connection information into a connection string named blobs in the MyService project. In the Program.cs file of MyService, the connection can be consumed using:

builder.AddAzureBlobClient("blobs");

Additional documentation

• https://github.com/Azure/azure-sdk-for-net/blob/main/sdk/storage/Azure.Storage.Blobs/README.md
• https://github.com/dotnet/aspire/tree/main/src/Components/README.md

Feedback & contributing

https://github.com/dotnet/aspire