public void With_prometheus_metrics()
{
_httpContext.SetOperation("op");
var observer = new AspNetMetricsObserver(new AspNetMetricsOptions(), new PrometheusMetrics());
observer.OnHttpRequestStarted(_httpContext);
observer.OnEndpointMatched(_httpContext);
_httpContext.Response.StatusCode = 200;
observer.OnHttpRequestCompleted(_httpContext);
}
public void Sli_errors_increment_counter()
{
_httpContext.SetSliError(ErrorType.InternalDependency, "client-service");
_httpContext.SetOperation("error-op");
var observer = new AspNetMetricsObserver(new AspNetMetricsOptions(), _metrics);
observer.OnHttpRequestStarted(_httpContext);
observer.OnHttpRequestCompleted(_httpContext);
var metric = _metrics.GetMetric <ICounter>("http_server_errors_total");
metric.ShouldNotBeNull();
metric.Collector.Verify(x => x.WithLabels("error-op", "internal_dependency", "client-service"), Times.Once);
metric.Child.Verify(x => x.Inc(1), Times.Once);
}
public void Server_errors_increment_error_counter()
{
_httpContext.SetOperation("op");
var observer = new AspNetMetricsObserver(new AspNetMetricsOptions(), _metrics);
observer.OnHttpRequestStarted(_httpContext);
observer.OnEndpointMatched(_httpContext);
_httpContext.Response.StatusCode = 504;
observer.OnHttpRequestCompleted(_httpContext);
var metric = _metrics.GetMetric <ICounter>("http_server_errors_total");
metric.ShouldNotBeNull();
metric.Collector.Verify(x => x.WithLabels("op", "internal", String.Empty), Times.Once);
metric.Child.Verify(x => x.Inc(1), Times.Once);
}
public void Can_track_requests()
{
_httpContext.SetOperation("op");
var observer = new AspNetMetricsObserver(new AspNetMetricsOptions(), _metrics);
observer.OnHttpRequestStarted(_httpContext);
observer.OnEndpointMatched(_httpContext);
var metric = _metrics.GetMetric <IGauge>("http_server_requests_in_progress");
metric.ShouldNotBeNull();
metric.Collector.Verify(x => x.WithLabels("op"), Times.Once);
metric.Child.Verify(x => x.Inc(1), Times.Once);
_httpContext.Response.StatusCode = 200;
observer.OnHttpRequestCompleted(_httpContext);
}