OnTheFlySettings.AzureFunctions 1.0.0

.NET 8.0 This package targets .NET 8.0. The package is compatible with this framework or higher. 
dotnet add package OnTheFlySettings.AzureFunctions --version 1.0.0
                    


                    

                
NuGet\Install-Package OnTheFlySettings.AzureFunctions -Version 1.0.0
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package. 
<PackageReference Include="OnTheFlySettings.AzureFunctions" Version="1.0.0" />
For projects that support PackageReference, copy this XML node into the project file to reference the package. 
<PackageVersion Include="OnTheFlySettings.AzureFunctions" Version="1.0.0" />
                    


                            Directory.Packages.props
                        

                    

                
<PackageReference Include="OnTheFlySettings.AzureFunctions" />
                    


                            Project file
For projects that support Central Package Management (CPM), copy this XML node into the solution Directory.Packages.props file to version the package. 
paket add OnTheFlySettings.AzureFunctions --version 1.0.0
                    


                    

                
#r "nuget: OnTheFlySettings.AzureFunctions, 1.0.0"
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package. 
#:package OnTheFlySettings.AzureFunctions@1.0.0
#:package directive can be used in C# file-based apps starting in .NET 10 preview 4. Copy this into a .cs file before any lines of code to reference the package. 
#addin nuget:?package=OnTheFlySettings.AzureFunctions&version=1.0.0
                    


                            Install as a Cake Addin
                        

                    

                
#tool nuget:?package=OnTheFlySettings.AzureFunctions&version=1.0.0
                    


                            Install as a Cake Tool

OnTheFlySettings.AzureFunctions

.NET Build & Test

Packages Version Downloads
OnTheFlySettings Nuget Version Downloads count
OnTheFlySettings.Client Nuget Version Downloads count
OnTheFlySettings.AzureKeyVault.Client Nuget Version Downloads count
OnTheFlySettings.AWSSecretManager.Client Nuget Version Downloads count
OnTheFlySettings.AzureFunctions Nuget Version Downloads count

On The Fly Settings

The .NET Azure Functions Client library allows you to fully automate the update of the target API/App setting when the underlying secret in Azure Key Vault is updated.

Step 1: Add the library to your Azure Functions App project.

You add the library from Nuget to your Functions App project and in your Program.cs or Startup.cs:

using OnTheFlySettings.AzureFunctions;

var builder = FunctionsApplication.CreateBuilder(args);

builder.ConfigureFunctionsWebApplication();

builder.Services.AddOnTheFlySettingsFunctionsClient(settings =>
{
    // Url of target API/App whose settings you want to update 
    // when the underlying secret in Azure Key Vault is updated.
    settings.BaseUrl = "<<url-of-target-api-app>>";
    settings.TimeoutMilliseconds = 1000 * 60 * 5;

    settings.Azure.KeyVaultUrl = "<<your-key-vault-url>>";

    //settings.Azure.UseManagedIdentity = true;
    // OR                
    settings.Azure.Credentials.TenantId = "<<your-tenant-id>>";
    settings.Azure.Credentials.ClientId = "<<your-client-id>>";
    settings.Azure.Credentials.ClientSecret = "<<your-client-secret>>";
});

builder.Build().Run();

Deploy the Azure Function to Azure.

Step 2: Create an Event Grid Topic

Create an Event Grid Topic in your Azure subscription and resource group.

Azure Event Grid Topic

Step 3: Create an Event Subscription in your Azure Key Vault

Create an Event Subscription in your Azure Key Vault and point it to the deployed Azure Function endpoint.

This subscription then calls the OnTheFlySettings Azure Function endpoint when the secret is updated.

Azure Event Subscription

That's it! Now your Azure Function is ready to receive the event from Azure Key Vault when the secret is updated.

Usage: Update underlying secret in Azure Key Vault

Let us say you update the secret HealthCheckIntervalCronExpression (for eg.) in Azure Key Vault and create a new version.

This will trigger the Azure Function which will fetch the secret value from the Key Vault

and call the target API/App endpoint to update the setting.

Complete automation of the setting update is achieved without any manual intervention.

Azure Secret Update

Documentation

Documentation

Demo Functions App

Product Compatible and additional computed target framework versions.
.NET net8.0 is compatible.  net8.0-android was computed.  net8.0-browser was computed.  net8.0-ios was computed.  net8.0-maccatalyst was computed.  net8.0-macos was computed.  net8.0-tvos was computed.  net8.0-windows was computed.  net9.0 was computed.  net9.0-android was computed.  net9.0-browser was computed.  net9.0-ios was computed.  net9.0-maccatalyst was computed.  net9.0-macos was computed.  net9.0-tvos was computed.  net9.0-windows was computed.  net10.0 was computed.  net10.0-android was computed.  net10.0-browser was computed.  net10.0-ios was computed.  net10.0-maccatalyst was computed.  net10.0-macos was computed.  net10.0-tvos was computed.  net10.0-windows was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

NuGet packages

This package is not used by any NuGet packages.

GitHub repositories

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Version Downloads Last Updated
1.0.0 55 10/26/2026

Initial release.