◆ OnEventCommand()

override void System.Net.Http.HttpTelemetry.OnEventCommand ( EventCommandEventArgs command )
inlineprotectedvirtual
Reimplemented from System.Diagnostics.Tracing.EventSource.
Definition at line 363 of file HttpTelemetry.cs.
    {
        if (command.Command != EventCommand.Enable)
        {
            return;
        }
        if (_startedRequestsCounter == null)
        {
            _startedRequestsCounter = new PollingCounter("requests-started", this, () => Interlocked.Read(ref _startedRequests))
            {
                DisplayName = "Requests Started"
            };
        }
        if (_startedRequestsPerSecondCounter == null)
        {
            _startedRequestsPerSecondCounter = new IncrementingPollingCounter("requests-started-rate", this, () => Interlocked.Read(ref _startedRequests))
            {
                DisplayName = "Requests Started Rate",
                DisplayRateTimeScale = TimeSpan.FromSeconds(1.0)
            };
        }
        if (_failedRequestsCounter == null)
        {
            _failedRequestsCounter = new PollingCounter("requests-failed", this, () => Interlocked.Read(ref _failedRequests))
            {
                DisplayName = "Requests Failed"
            };
        }
        if (_failedRequestsPerSecondCounter == null)
        {
            _failedRequestsPerSecondCounter = new IncrementingPollingCounter("requests-failed-rate", this, () => Interlocked.Read(ref _failedRequests))
            {
                DisplayName = "Requests Failed Rate",
                DisplayRateTimeScale = TimeSpan.FromSeconds(1.0)
            };
        }
        if (_currentRequestsCounter == null)
        {
            _currentRequestsCounter = new PollingCounter("current-requests", this, () => -Interlocked.Read(ref _stoppedRequests) + Interlocked.Read(ref _startedRequests))
            {
                DisplayName = "Current Requests"
            };
        }
        if (_totalHttp11ConnectionsCounter == null)
        {
            _totalHttp11ConnectionsCounter = new PollingCounter("http11-connections-current-total", this, () => Interlocked.Read(ref _openedHttp11Connections))
            {
                DisplayName = "Current Http 1.1 Connections"
            };
        }
        if (_totalHttp20ConnectionsCounter == null)
        {
            _totalHttp20ConnectionsCounter = new PollingCounter("http20-connections-current-total", this, () => Interlocked.Read(ref _openedHttp20Connections))
            {
                DisplayName = "Current Http 2.0 Connections"
            };
        }
        if (_http11RequestsQueueDurationCounter == null)
        {
            _http11RequestsQueueDurationCounter = new EventCounter("http11-requests-queue-duration", this)
            {
                DisplayName = "HTTP 1.1 Requests Queue Duration",
                DisplayUnits = "ms"
            };
        }
        if (_http20RequestsQueueDurationCounter == null)
        {
            _http20RequestsQueueDurationCounter = new EventCounter("http20-requests-queue-duration", this)
            {
                DisplayName = "HTTP 2.0 Requests Queue Duration",
                DisplayUnits = "ms"
            };
        }
    }