private void OnAfterAction(object arg)
{
var httpContext = (HttpContext)_afterAction_httpContextFetcher.Fetch(arg);
var actionDescriptor = (ActionDescriptor)_afterAction_ActionDescriptorFetcher.Fetch(arg);
if (httpContext == null || actionDescriptor == null)
{
return;
}
var request = httpContext.Request;
var response = httpContext.Response;
string routeTemplate = actionDescriptor.AttributeRouteInfo.Template;
var controllerActionDescriptor = actionDescriptor as ControllerActionDescriptor;
string controllerName = controllerActionDescriptor?.ControllerTypeInfo.FullName;
string actionName = controllerActionDescriptor?.ActionName;
Interlocked.Decrement(ref _gauges[_totalInflightRequestGauge].Value);
if (controllerActionDescriptor == null)
{
return;
}
string requestMetricPrefix = MetricNameUtils.MetricName(request, routeTemplate);
if (requestMetricPrefix != null)
{
var completeTags = GetTags(true, true, true, controllerName, actionName, null);
/*
* Gauges
* 1) AspNetCore.request.api.v2.alert.summary.GET.inflight.value
* 2) AspNetCore.total_requests.inflight.value
*/
var inflightRequestGauge = new WavefrontGaugeOptions
{
Context = AspNetCoreContext,
Name = requestMetricPrefix + ".inflight",
Tags = completeTags,
MeasurementUnit = Unit.Requests
};
Interlocked.Decrement(ref _gauges[inflightRequestGauge].Value);
}
string responseMetricPrefix = MetricNameUtils.MetricName(request, routeTemplate, response);
if (responseMetricPrefix != null)
{
httpContext.Items[ControllerNameKey] = controllerName;
httpContext.Items[ActionNameKey] = actionName;
httpContext.Items[ResponseMetricPrefixKey] = responseMetricPrefix;
}
}
private void OnBeforeAction(object arg)
{
// NOTE: This event is the start of the action pipeline. The action has been selected, the route
// has been selected but no filters have run and model binding hasn't occured.
var httpContext = (HttpContext)_beforeAction_httpContextFetcher.Fetch(arg);
var actionDescriptor = (ActionDescriptor)_beforeAction_ActionDescriptorFetcher.Fetch(arg);
if (httpContext == null || actionDescriptor == null)
{
return;
}
var request = httpContext.Request;
string routeTemplate = actionDescriptor.AttributeRouteInfo.Template;
var controllerActionDescriptor = actionDescriptor as ControllerActionDescriptor;
string controllerName = controllerActionDescriptor?.ControllerTypeInfo.FullName;
string actionName = controllerActionDescriptor?.ActionName;
httpContext.Response.Headers.Add(WavefrontSpanHeader, routeTemplate);
// Update the active tracing span with MVC info
ISpan span = Tracer.ActiveSpan;
if (span != null)
{
if (controllerActionDescriptor == null)
{
span.SetOperationName(actionDescriptor.DisplayName);
}
else
{
span.SetOperationName($"{controllerActionDescriptor.ControllerTypeInfo.Name}.{actionName}");
span.SetTag(ControllerTagKey, controllerName);
}
span.SetTag(PathTagKey, routeTemplate);
}
Interlocked.Increment(ref GetGaugeValue(_totalInflightRequestGauge).Value);
if (controllerActionDescriptor == null)
{
return;
}
string requestMetricPrefix = MetricNameUtils.MetricName(request, routeTemplate);
if (requestMetricPrefix != null)
{
var completeTags = GetTags(true, true, true, controllerName, actionName, null);
/* Gauges
* 1) AspNetCore.request.api.v2.alert.summary.GET.inflight.value
* 2) AspNetCore.total_requests.inflight.value
*/
var inflightRequestGauge = new WavefrontGaugeOptions
{
Context = AspNetCoreContext,
Name = requestMetricPrefix + ".inflight",
Tags = completeTags,
MeasurementUnit = Unit.Requests
};
Interlocked.Increment(ref GetGaugeValue(inflightRequestGauge).Value);
}
}
