public void ProcessEvent_Start()
{
var opts = GetOptions();
OpenCensusTracing tracing = new OpenCensusTracing(opts, null);
var obs = new HttpClientCoreObserver(opts, tracing);
var request = GetHttpRequestMessage();
obs.ProcessEvent(HttpClientCoreObserver.START_EVENT, new { Request = request });
Span span = GetCurrentSpan(tracing.Tracer);
Assert.NotNull(span);
Assert.True(request.Properties.TryGetValue(HttpClientCoreObserver.SPANCONTEXT_KEY, out object context));
HttpClientTracingObserver.SpanContext spanContext = context as HttpClientTracingObserver.SpanContext;
Assert.NotNull(spanContext);
Assert.Equal(span, spanContext.Active);
Assert.NotNull(spanContext.ActiveScope);
Assert.Equal("httpclient:/", span.Name);
Assert.True(request.Headers.Contains(B3Constants.XB3TraceId));
Assert.True(request.Headers.Contains(B3Constants.XB3SpanId));
Assert.False(request.Headers.Contains(B3Constants.XB3ParentSpanId));
var spanId = request.Headers.GetValues(B3Constants.XB3SpanId).Single();
Assert.Equal(span.Context.SpanId.ToLowerBase16(), spanId);
var traceId = request.Headers.GetValues(B3Constants.XB3TraceId).Single();
var expected = GetTraceId(opts, span.Context);
Assert.Equal(expected, traceId);
if (span.Context.TraceOptions.IsSampled)
{
Assert.True(request.Headers.Contains(B3Constants.XB3Sampled));
}
Assert.False(span.HasEnded);
var spanData = span.ToSpanData();
var attributes = spanData.Attributes.AttributeMap;
Assert.Equal(SpanKind.Client, span.Kind);
Assert.Equal(AttributeValue.StringAttributeValue("http://localhost:5555/"), attributes[SpanAttributeConstants.HttpUrlKey]);
Assert.Equal(AttributeValue.StringAttributeValue(HttpMethod.Get.ToString()), attributes[SpanAttributeConstants.HttpMethodKey]);
Assert.Equal(AttributeValue.StringAttributeValue("localhost:5555"), attributes[SpanAttributeConstants.HttpHostKey]);
Assert.Equal(AttributeValue.StringAttributeValue("/"), attributes[SpanAttributeConstants.HttpPathKey]);
Assert.Equal(AttributeValue.StringAttributeValue("Header"), attributes["http.request.TEST"]);
}
public void ProcessEvent_Exception_PreviousStarted()
{
var opts = GetOptions();
OpenCensusTracing tracing = new OpenCensusTracing(opts, null);
var obs = new HttpClientCoreObserver(opts, tracing);
var request = GetHttpRequestMessage();
obs.ProcessEvent(HttpClientCoreObserver.START_EVENT, new { Request = request });
Span span = AsyncLocalContext.CurrentSpan as Span;
Assert.NotNull(span);
Assert.True(request.Properties.TryGetValue(HttpClientCoreObserver.SPANCONTEXT_KEY, out object context));
HttpClientTracingObserver.SpanContext spanContext = context as HttpClientTracingObserver.SpanContext;
Assert.NotNull(spanContext);
Assert.Equal(span, spanContext.Active);
Assert.Null(spanContext.Previous);
Assert.Equal("httpclient:/", span.Name);
var exception = new Exception("Help");
obs.ProcessEvent(HttpClientCoreObserver.EXCEPTION_EVENT, new { Request = request, Exception = exception });
var response = GetHttpResponseMessage(HttpStatusCode.InternalServerError);
obs.ProcessEvent(HttpClientCoreObserver.STOP_EVENT, new { Request = request, Response = response, RequestTaskStatus = TaskStatus.RanToCompletion });
Assert.True(span.HasEnded);
Assert.Null(AsyncLocalContext.CurrentSpan);
Assert.False(request.Properties.TryGetValue(HttpClientCoreObserver.SPANCONTEXT_KEY, out object ctx));
var spanData = span.ToSpanData();
var attributes = spanData.Attributes.AttributeMap;
Assert.Equal(AttributeValue.StringAttributeValue(SpanAttributeConstants.ClientSpanKind), attributes[SpanAttributeConstants.SpanKindKey]);
Assert.Equal(AttributeValue.StringAttributeValue("http://localhost:5555/"), attributes[SpanAttributeConstants.HttpUrlKey]);
Assert.Equal(AttributeValue.StringAttributeValue(HttpMethod.Get.ToString()), attributes[SpanAttributeConstants.HttpMethodKey]);
Assert.Equal(AttributeValue.StringAttributeValue("localhost"), attributes[SpanAttributeConstants.HttpHostKey]);
Assert.Equal(AttributeValue.StringAttributeValue("/"), attributes[SpanAttributeConstants.HttpPathKey]);
Assert.Equal(AttributeValue.StringAttributeValue("Header"), attributes["http.request.TEST"]);
Assert.Equal(AttributeValue.StringAttributeValue("Header"), attributes["http.response.TEST"]);
Assert.Equal(AttributeValue.LongAttributeValue((long)HttpStatusCode.InternalServerError), attributes[SpanAttributeConstants.HttpStatusCodeKey]);
Assert.Equal(AttributeValue.StringAttributeValue(obs.GetExceptionMessage(exception)), attributes[SpanAttributeConstants.ErrorKey]);
Assert.Equal(AttributeValue.StringAttributeValue(obs.GetExceptionStackTrace(exception)), attributes[SpanAttributeConstants.ErrorStackTrace]);
}
public void ProcessEvent_Stop_PreviousStarted()
{
var opts = GetOptions();
OpenCensusTracing tracing = new OpenCensusTracing(opts, null);
var obs = new HttpClientCoreObserver(opts, tracing);
var request = GetHttpRequestMessage();
obs.ProcessEvent(HttpClientCoreObserver.START_EVENT, new { Request = request });
Span span = GetCurrentSpan(tracing.Tracer);
Assert.NotNull(span);
Assert.True(request.Properties.TryGetValue(HttpClientCoreObserver.SPANCONTEXT_KEY, out object context));
HttpClientTracingObserver.SpanContext spanContext = context as HttpClientTracingObserver.SpanContext;
Assert.NotNull(spanContext);
Assert.Equal(span, spanContext.Active);
Assert.NotNull(spanContext.ActiveScope);
Assert.Equal("httpclient:/", span.Name);
var response = GetHttpResponseMessage(HttpStatusCode.OK);
obs.ProcessEvent(HttpClientCoreObserver.STOP_EVENT, new { Request = request, Response = response, RequestTaskStatus = TaskStatus.RanToCompletion });
Assert.True(span.HasEnded);
Assert.False(request.Properties.TryGetValue(HttpClientCoreObserver.SPANCONTEXT_KEY, out object ctx));
var spanData = span.ToSpanData();
var attributes = spanData.Attributes.AttributeMap;
Assert.Equal(SpanKind.Client, span.Kind);
Assert.Equal(AttributeValue.StringAttributeValue("http://localhost:5555/"), attributes[SpanAttributeConstants.HttpUrlKey]);
Assert.Equal(AttributeValue.StringAttributeValue(HttpMethod.Get.ToString()), attributes[SpanAttributeConstants.HttpMethodKey]);
Assert.Equal(AttributeValue.StringAttributeValue("localhost:5555"), attributes[SpanAttributeConstants.HttpHostKey]);
Assert.Equal(AttributeValue.StringAttributeValue("/"), attributes[SpanAttributeConstants.HttpPathKey]);
Assert.Equal(AttributeValue.StringAttributeValue("Header"), attributes["http.request.TEST"]);
Assert.Equal(AttributeValue.StringAttributeValue("Header"), attributes["http.response.TEST"]);
Assert.Equal(AttributeValue.LongAttributeValue((long)HttpStatusCode.OK), attributes[SpanAttributeConstants.HttpStatusCodeKey]);
}
