Inject context into functions

[verdie-g]

I'd like to be able to inject context, such as the user id associated to the current HTTP request. Is that possible with SK .NET?

I could try to do that by adding a userId parameter in my function and pass it in the prompt but that wouldn't be as reliable as fetching it from the context.

[itayfisz]

You could use the Data dictionary in the Kernel object to add any custom data, and then it can be passed to any KernelFunction.

Something like this:

var clonedKernel = kernel.Clone();

clonedKernel.Data["userId"] = "123";

// Use the clonedKernel, for example using IChatCompletionService
var completionService = clonedKernel.GetRequiredService<IChatCompletionService>();

...

And in any plugin:

[KernelFunction]
public Task DoSomethingAsync(Kernel kernel, ...)
{
  var userId = kernel.Data["userId"]
  ...
}

[verdie-g]

Thanks! Is a Kernel a light-weight object that can be cloned for each request?

[itayfisz]

From my understanding - yes.
Disclaimer: I'm not sure if this is indeed the best practice. There might be some more standardized way, but I couldn't find any. (I think you can achieve something similar by leveraging the KernelArguments, which can also be injected).
Btw, notice this is a shallow copy of the dictionary.