public async Task Get(Guid id)
{
Response.Headers.Add("Content-Type", "text/event-stream");
_smartEventHubConsumer.RegisterEventQueue(id);
var model = new TailCommandProcessorModel();
model.WebRootPath = _environment.WebRootPath;
//Send an empty table back for initial display
await RenderCommandProcessorTableAndReturnResponse(this, model, Response).ConfigureAwait(false);
//5 minute timeout ensures that if an incorrect or out of date GUID is used that this Get function doesn't run forever
foreach (var commandResult in _smartEventHubConsumer.GetEvents <CommandResult>(id, TimeSpan.FromMinutes(5)))
{
model.CommandResults.Add(commandResult);
await RenderCommandProcessorTableAndReturnResponse(this, model, Response).ConfigureAwait(false);
}
model.Completed = true;
await RenderCommandProcessorTableAndReturnResponse(this, model, Response).ConfigureAwait(false);
_smartEventHubConsumer.DeregisterEventQueue(id);
}
private static async Task RenderCommandProcessorTableAndReturnResponse(TailCommandProcessor controller, TailCommandProcessorModel model, HttpResponse response)
{
var partialViewHtml = await controller.RenderViewAsync("_CommandProcessorTable", model, true).ConfigureAwait(false);
string json = JsonConvert.SerializeObject(partialViewHtml);
byte[] messageBytes = ASCIIEncoding.ASCII.GetBytes($"data:{json}\n\n");
await response.Body.WriteAsync(messageBytes.AsMemory(0, messageBytes.Length)).ConfigureAwait(false);
await response.Body.FlushAsync().ConfigureAwait(false);
}