How to get Azure Functions's framework generated request id?

Question

Every time i am debugging my Azure Functions (locally) then invoking a function, the CLI (func.exe) always shows requestId as one of the incoming request's parameters which i am highly sure it is not from my side that generate it.

My question is, is it possible to extract the value of requestId value from our code and how ? is this feature only specific for development/local debugging only ? since i can't find any documentation, article nor blog regarding this.

thank you

Answer 1

I believe you will find the request information in the HttpContext

req.HttpContext.Items["MS_AzureFunctionsRequestID"]

c# code example assuming you have the following signature

public static async Task<IActionResult> Run([HttpTrigger(AuthorizationLevel.Anonymous, "get", "post", Route = null)] HttpRequest req, ILogger log) {}