Azure app configuration isolated .net 8 LTS function dynamic refresh not working

[marcosikkens]

I created a net 8 lts function app in isolated mode and tried to use azure app configuration. After clicking the new project->function app->net 8 lts isolated with an http trigger i added the following code:

var builder = FunctionsApplication.CreateBuilder(args);

builder.ConfigureFunctionsWebApplication();
builder.Configuration.AddAzureAppConfiguration(o =>
{
    o.Connect(Environment.GetEnvironmentVariable("ConnectionString"));
    o.Select("TestApp:*", LabelFilter.Null);
    o.ConfigureRefresh(refreshOptions =>
        refreshOptions.Register("TestApp:Settings:Sentinel", refreshAll: true).SetRefreshInterval(TimeSpan.FromSeconds(1))
        );
});

builder.Services.AddAzureAppConfiguration();

in my functions class i have the following code:

        public Function1(ILogger<Function1> logger, IConfiguration configuration, IConfigurationRefresherProvider refresherProvider)
        {
            _logger = logger;
            _configuration = configuration;
            _refresherProvider = refresherProvider;
        }

        [Function("Function1")]
        public async Task<IActionResult> Run([HttpTrigger(AuthorizationLevel.Function, "get", "post")] HttpRequest req)
        {
            _logger.LogInformation("C# HTTP trigger function processed a request.");
            return new OkObjectResult($"Welcome to Azure Functions! {_configuration["TestApp:Settings:Message"]}");
        }

AFter updating the sentinel value in my azure configuration the value from the request doesnt change. It DOES change after restarting the function app. I even tried messing with the refresherprovider but calling refreshAsync doesnt change an value. I just copied this from the microsoft documentation, what am I doing wrong?

I am using the 8.1.1 package in my solution.

[juniwang]

@marcosikkens have you tried to add app.UseAzureAppConfiguration(); in your code? this enables your app to use the App Configuration middleware to update the configuration for you automatically. more examples and details can be found at https://learn.microsoft.com/en-us/azure/azure-app-configuration/enable-dynamic-configuration-azure-functions-csharp?tabs=isolated-process and https://learn.microsoft.com/en-us/azure/azure-app-configuration/enable-dynamic-configuration-aspnet-core

[marcosikkens]

@juniwang I cannot do that because that is not an extension method for an Ihost? I am running an isolated function. Also this is not in the example for Azure functions:
https://learn.microsoft.com/en-us/azure/azure-app-configuration/enable-dynamic-configuration-azure-functions-csharp?tabs=in-process

[marcosikkens]

I also find a lot of results like this:

https://anthonygiretti.com/2024/11/12/from-net-6-to-net-8my-migration-experienceusing-azure-appconfiguration-in-azure-functions-on-net8-isolated/

But in my code the

.ConfigureFunctionsWebApplication(app => { app.UseAzureAppConfiguration(); }

isnt compiling

my csproj is below:

  <PropertyGroup>
    <TargetFramework>net8.0</TargetFramework>
    <AzureFunctionsVersion>v4</AzureFunctionsVersion>
    <OutputType>Exe</OutputType>
    <ImplicitUsings>enable</ImplicitUsings>
    <Nullable>enable</Nullable>
  </PropertyGroup>
  <ItemGroup>
    <FrameworkReference Include="Microsoft.AspNetCore.App" />
    <!-- Application Insights isn't enabled by default. See https://aka.ms/AAt8mw4. -->
    <!-- <PackageReference Include="Microsoft.ApplicationInsights.WorkerService" Version="2.22.0" /> -->
    <!-- <PackageReference Include="Microsoft.Azure.Functions.Worker.ApplicationInsights" Version="2.0.0" /> -->
    <PackageReference Include="Microsoft.Azure.Functions.Worker" Version="2.0.0" />
    <PackageReference Include="Microsoft.Azure.Functions.Worker.Extensions.Http" Version="3.3.0" />
    <PackageReference Include="Microsoft.Azure.Functions.Worker.Extensions.Http.AspNetCore" Version="2.0.1" />
    <PackageReference Include="Microsoft.Azure.Functions.Worker.Sdk" Version="2.0.1" />
    <PackageReference Include="Microsoft.Extensions.Configuration.AzureAppConfiguration" Version="8.1.1" />
  </ItemGroup>```