コード例 #1
0
        public object BeforeSendRequest(ref Message request, IClientChannel channel)
        {
            var spanContext = _spanContextAccessor.HasContext()
                ? _spanContextAccessor
                              .GetContext()
                              .CreateChild()
                : new SpanContext();

            spanContext.Sample(_sampler);

            var httpRequest = ExtractHttpRequest(request);

            // Inject X-B3 headers to the outgoing request
            _spanContextInjector.Inject(httpRequest, spanContext);

            var spanBuilder = new SpanBuilder(spanContext);

            spanBuilder.Start()
            .Kind(SpanKind.Client)
            .Tag("action", request.Headers.Action)
            .WithRemoteEndpoint(new Endpoint
            {
                ServiceName = _remoteServiceName
            });

            return(spanBuilder);
        }
コード例 #2
0
        protected override async Task <HttpResponseMessage> SendAsync(
            HttpRequestMessage request, CancellationToken cancellationToken)
        {
            var spanContext = _spanContextAccessor.HasContext()
                ? _spanContextAccessor
                              .GetContext()
                              .CreateChild()
                : new SpanContext();

            spanContext.Sample(_sampler);

            var spanBuilder = new SpanBuilder(spanContext);

            spanBuilder.Start()
            .Name(request.Method.Method)
            .Kind(SpanKind.Client)
            .Tag("uri", request.RequestUri.OriginalString)
            .Tag("method", request.Method.Method)
            .WithRemoteEndpoint(new Endpoint
            {
                ServiceName = _remoteEndpointName
            });

            // Add X-B3 headers to the request
            request = _spanContextInjector.Inject(request, spanContext);

            try
            {
                return(await base.SendAsync(request, cancellationToken));
            }
            catch (Exception ex)
            {
                spanBuilder.Error(ex.Message);
                throw;
            }
            finally
            {
                var span = spanBuilder
                           .End()
                           .Build();

                try
                {
                    _dispatcher.Dispatch(span);
                }
                catch (DispatchException)
                {
                    // ignore
                }
            }
        }