Dynamic output file name of ApiHubFile Azure Function binding (one drive, drop box etc)

Question

I have an Azure Function with Timer Trigger, and then I want to generate a file with dynamic (defined in runtime) name and contents and save it to e.g. OneDrive.

My func

Answer 1

To have full control over the name and path of an output during function execution, you need to use imperative binding

For example: function.json

{
      "type": "blob",
      "name": "outputBinder",
      "path": "export/test",
      "connection": "AzureWebJobsStorage",
      "direction": "out"
},

Function:

public static async Task Run(HttpRequestMessage req, TraceWriter log, IBinder outputBinder)
{
     var attribute new BlobAttribute($"{some dynamic path}/{some dynamic filename}", FileAccess.Write);
     using (var stream = await outputBinder.BindAsync(attribute))
     {
          // do whatever you want with this stream here...
     }
}