public async Task <ClusterResult> ExecuteAsync(IRequestContext context, Func <IRequestContext, Task <ClusterResult> > next)
{
ClusterResult clusterResult;
using (var span = Trace.BeginSpan())
{
if (!string.IsNullOrEmpty(serviceName))
{
span.SetAnnotation(TracingAnnotationNames.Service, serviceName);
}
span.SetAnnotation(TracingAnnotationNames.Kind, "cluster-client");
span.SetAnnotation(TracingAnnotationNames.Component, "cluster-client");
span.SetAnnotation(TracingAnnotationNames.ClusterStrategy, context.Strategy.ToString());
span.SetAnnotation(TracingAnnotationNames.HttpUrl, context.Request.Url.ToStringWithoutQuery());
span.SetAnnotation(TracingAnnotationNames.HttpMethod, context.Request.Method);
span.SetAnnotation(TracingAnnotationNames.HttpRequestContentLength, context.Request.Content?.Length ?? 0);
clusterResult = await next(context).ConfigureAwait(false);
span.SetAnnotation(TracingAnnotationNames.ClusterStatus, clusterResult.Status);
span.SetAnnotation(TracingAnnotationNames.HttpCode, (int)clusterResult.Response.Code);
span.SetAnnotation(TracingAnnotationNames.HttpResponseContentLength, clusterResult.Response.Content.Length);
}
return(clusterResult);
}
public async Task Invoke(HttpContext context)
{
using (var spanBuilder = Trace.BeginSpan())
{
var url = GetUrl(context.Request);
spanBuilder.SetAnnotation(TracingAnnotationNames.Operation, GetOperationName(context.Request.Method, url));
spanBuilder.SetAnnotation(TracingAnnotationNames.Kind, "http-server");
spanBuilder.SetAnnotation(TracingAnnotationNames.Service, serviceName);
spanBuilder.SetAnnotation(TracingAnnotationNames.Host, HostnameProvider.Get());
spanBuilder.SetAnnotation(TracingAnnotationNames.HttpUrl, url.ToStringWithoutQuery());
if (context.Request.ContentLength.HasValue)
{
spanBuilder.SetAnnotation(TracingAnnotationNames.HttpRequestContentLength, context.Request.ContentLength);
}
try
{
await next.Invoke(context).ConfigureAwait(false);
if (context.Response.ContentLength.HasValue)
{
spanBuilder.SetAnnotation(TracingAnnotationNames.HttpResponseContentLength, context.Response.ContentLength);
}
spanBuilder.SetAnnotation(TracingAnnotationNames.HttpCode, context.Response.StatusCode);
}
catch
{
spanBuilder.SetAnnotation(TracingAnnotationNames.HttpCode, (int)HttpStatusCode.InternalServerError);
context.Response.StatusCode = 500;
}
}
}
public async Task <Response> SendAsync(Request request, TimeSpan timeout, CancellationToken cancellationToken)
{
Response response;
using (var span = Trace.BeginSpan())
{
span.SetAnnotation(TracingAnnotationNames.Kind, "http-client");
span.SetAnnotation(TracingAnnotationNames.Component, "cluster-client");
span.SetAnnotation(TracingAnnotationNames.HttpUrl, request.Url.ToStringWithoutQuery());
span.SetAnnotation(TracingAnnotationNames.HttpMethod, request.Method);
span.SetAnnotation(TracingAnnotationNames.HttpRequestContentLength, request.Content?.Length ?? 0);
response = await transport.SendAsync(request, timeout, cancellationToken).ConfigureAwait(false);
span.SetAnnotation(TracingAnnotationNames.HttpCode, (int)response.Code);
span.SetAnnotation(TracingAnnotationNames.HttpResponseContentLength, response.Content.Length);
}
return(response);
}