Aspire.Azure.AI.OpenAI 9.0.0-preview.4.24511.1

Aspire.Azure.AI.OpenAI library

Registers OpenAIClient as a singleton in the DI container for connecting to Azure OpenAI or OpenAI. Enables corresponding metrics, logging and telemetry.

Getting started

Prerequisites

• Azure subscription - create one for free
• Azure OpenAI or OpenAI account - create an Azure OpenAI Service resource

Install the package

Install the .NET Aspire Azure OpenAI library with NuGet:

dotnet add package Aspire.Azure.AI.OpenAI

Usage example

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

builder.AddAzureOpenAIClient("openaiConnectionName");

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

private readonly AzureOpenAIClient _client;

public CognitiveController(AzureOpenAIClient client)
{
    _client = client;
}

See the Azure OpenAI Service quickstarts for examples on using the AzureOpenAIClient.

Azure-agnostic client resolution

You can retrieve the AzureOpenAIClient object using the base OpenAIClient service type. This allows for code that is not dependent on Azure OpenAI-specific features to not depend directly on Azure types.

Additionally this package provides the AddOpenAIClientFromConfiguration extension method to register an OpenAIClient instance based on the connection string that is provided. This allows your application to register the best implementation for the OpenAI Rest API it connects. The following rules are followed:

• If the Endpoint attribute is empty or missing, the OpenAI service is used and an OpenAIClient instance is registered, e.g., Key={key};.
• If the attribute IsAzure is provided and true then AzureOpenAIClient is registered, OpenAIClient otherwise, e.g., Endpoint={azure_endpoint};Key={key};IsAzure=true would register an AzureOpenAIClient, while Endpoint=https://localhost:18889;Key={key} would register an OpenAIClient.
• If the Endpoint attribute contains ".azure." then AzureOpenAIClient is registered, OpenAIClient otherwise, e.g., Endpoint=https://{account}.azure.com;Key={key};.

In any case a valid connection string must contain at least either an Endpoint or a Key.

Configuration

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

Use a connection string

A connection can be constructed from the Keys and Endpoint tab with the format Endpoint={endpoint};Key={key};. You can provide the name of the connection string when calling builder.AddAzureOpenAIClient():

builder.AddAzureOpenAIClient("openaiConnectionName");

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

Account Endpoint

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

{
  "ConnectionStrings": {
    "openaiConnectionName": "https://{account_name}.openai.azure.com/"
  }
}

Connection string

Alternatively, a custom connection string can be used.

{
  "ConnectionStrings": {
    "openaiConnectionName": "Endpoint=https://{account_name}.openai.azure.com/;Key={account_key};"
  }
}

In order to connect to the non-Azure OpenAI service, drop the Endpoint property and only set the Key property to set the API key (https://platform.openai.com/account/api-keys).

Use configuration providers

The .NET Aspire Azure OpenAI library supports Microsoft.Extensions.Configuration. It loads the AzureOpenAISettings and AzureOpenAIClientOptions from configuration by using the Aspire:Azure:AI:OpenAI key. Example appsettings.json that configures some of the options:

{
  "Aspire": {
    "Azure": {
      "AI": {
        "OpenAI": {
          "DisableTracing": false,
          "ClientOptions": {
            "UserAgentApplicationId": "myapp"
          }
        }
      }
    }
  }
}

Use inline delegates

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

builder.AddAzureOpenAIClient("openaiConnectionName", settings => settings.DisableTracing = true);

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

builder.AddAzureOpenAIClient("openaiConnectionName", configureClientBuilder: configureClientBuilder: builder => builder.ConfigureOptions(options => options.NetworkTimeout = TimeSpan.FromSeconds(2)));

AppHost extensions

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

dotnet add package Aspire.Hosting.Azure.CognitiveServices

Then, in the Program.cs file of AppHost, add an Azure OpenAI service and consume the connection using the following methods:

var openai = builder.ExecutionContext.IsPublishMode
    ? builder.AddAzureOpenAI("openai")
    : builder.AddConnectionString("openai");

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

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

builder.AddAzureOpenAIClient("openai");

Experimental Telemetry

Azure AI OpenAI telemetry support is experimental, the shape of traces may change in the future without notice. It can be enabled by invoking

AppContext.SetSwitch("OpenAI.Experimental.EnableOpenTelemetry", true);

or by setting the "OPENAI_EXPERIMENTAL_ENABLE_OPEN_TELEMETRY" environment variable to "true".

Additional documentation

• https://learn.microsoft.com/dotnet/api/overview/azure/ai.openai-readme
• https://github.com/dotnet/aspire/tree/main/src/Components/README.md

Feedback & contributing

https://github.com/dotnet/aspire