public async Task Invoke(
HttpContext httpContext,
IOptionsMonitor <MonitorOptions> monitorOption,
IMonitorHealthCheck monitorHealthCheck,
IServiceLogger <AddRequestMonitorMiddleware> serviceLogger)
{
if (monitorOption.CurrentValue.Enable)
{
var requestMonitor = new RequestMonitor
{
BeginDateTime = DateTime.UtcNow
};
var startTime = DateTime.UtcNow;
var startCpuUsage = Process.GetCurrentProcess().TotalProcessorTime;
var stopWatch = new Stopwatch();
stopWatch.Start();
await _next.Invoke(httpContext);
stopWatch.Stop();
var endTime = DateTime.UtcNow;
var endCpuUsage = Process.GetCurrentProcess().TotalProcessorTime;
requestMonitor.ElapsedTime = stopWatch.ElapsedMilliseconds;
requestMonitor.EndDateTime = DateTime.UtcNow;
var cpuUsedMs = (endCpuUsage - startCpuUsage).TotalMilliseconds;
var totalMsPassed = (endTime - startTime).TotalMilliseconds;
var cpuUsageTotal = cpuUsedMs / (Environment.ProcessorCount * totalMsPassed);
requestMonitor.CpuUsage = cpuUsageTotal * 100;
requestMonitor.StatusCode = httpContext.Response.StatusCode;
requestMonitor.MemoryUsed = Process.GetCurrentProcess().WorkingSet64 / 1024;
monitorHealthCheck.AddRequestMonitor(requestMonitor);
httpContext.Items[Constants.RequestMonitor] = requestMonitor;
serviceLogger.Info("Request complete with these usages {$Monitor}", requestMonitor.ToJson());
}
else
{
await _next.Invoke(httpContext);
}
}
public void AddRequestMonitor(RequestMonitor requestMonitor)
{
requestMonitors.Add(requestMonitor);
}