public override void OnStartActivity(Activity activity, object payload)
{
const string EventNameSuffix = ".OnStartActivity";
var context = this.startContextFetcher.Fetch(payload) as HttpContext;
if (context == null)
{
CollectorEventSource.Log.NullPayload(nameof(HttpInListener) + EventNameSuffix);
return;
}
var request = context.Request;
// see the spec https://github.com/open-telemetry/OpenTelemetry-specs/blob/master/trace/HTTP.md
var path = (request.PathBase.HasValue || request.Path.HasValue) ? (request.PathBase + request.Path).ToString() : "/";
ISpan span = null;
if (this.hostingSupportsW3C)
{
span = this.Tracer.StartSpanFromActivity(path, Activity.Current, SpanKind.Server);
}
else
{
var ctx = this.Tracer.TextFormat.Extract <HttpRequest>(
request,
(r, name) => r.Headers[name]);
span = this.Tracer.StartSpan(path, ctx, SpanKind.Server);
}
this.Tracer.WithSpan(span);
if (span.IsRecordingEvents)
{
// Note, route is missing at this stage. It will be available later
span.PutHttpHostAttribute(request.Host.Host, request.Host.Port ?? 80);
span.PutHttpMethodAttribute(request.Method);
span.PutHttpPathAttribute(path);
var userAgent = request.Headers["User-Agent"].FirstOrDefault();
span.PutHttpUserAgentAttribute(userAgent);
span.PutHttpRawUrlAttribute(GetUri(request));
}
}
public override void OnStartActivity(Activity activity, object payload)
{
var context = this.startContextFetcher.Fetch(payload) as HttpContext;
if (context == null)
{
// Debug.WriteLine("context is null");
return;
}
var request = context.Request;
var ctx = this.propagationComponent.TextFormat.Extract <HttpRequest>(
request,
(r, name) => r.Headers[name]);
// see the spec https://github.com/census-instrumentation/opencensus-specs/blob/master/trace/HTTP.md
string path = (request.PathBase.HasValue || request.Path.HasValue) ? (request.PathBase + request.Path).ToString() : "/";
ISpan span = null;
this.Tracer.SpanBuilderWithRemoteParent(path, ctx).SetSampler(this.Sampler).StartScopedSpan(out span);
if (span == null)
{
// Debug.WriteLine("span is null");
return;
}
// Note, route is missing at this stage. It will be available later
span.PutServerSpanKindAttribute();
span.PutHttpHostAttribute(request.Host.Host, request.Host.Port ?? 80);
span.PutHttpMethodAttribute(request.Method);
span.PutHttpPathAttribute(path);
var userAgent = request.Headers["User-Agent"].FirstOrDefault();
span.PutHttpUserAgentAttribute(userAgent);
span.PutHttpRawUrlAttribute(GetUri(request));
}
public override void OnStartActivity(Activity activity, object payload)
{
var context = this.startContextFetcher.Fetch(payload) as HttpContext;
if (context == null)
{
// Debug.WriteLine("context is null");
return;
}
var request = context.Request;
var ctx = this.Tracer.TextFormat.Extract <HttpRequest>(
request,
(r, name) => r.Headers[name]);
// see the spec https://github.com/open-telemetry/OpenTelemetry-specs/blob/master/trace/HTTP.md
var path = (request.PathBase.HasValue || request.Path.HasValue) ? (request.PathBase + request.Path).ToString() : "/";
ISpan span = this.Tracer.SpanBuilder(path)
.SetSpanKind(SpanKind.Server)
.SetParent(ctx)
.SetSampler(this.SamplerFactory(request))
.StartSpan();
this.Tracer.WithSpan(span);
// Note, route is missing at this stage. It will be available later
span.PutHttpHostAttribute(request.Host.Host, request.Host.Port ?? 80);
span.PutHttpMethodAttribute(request.Method);
span.PutHttpPathAttribute(path);
var userAgent = request.Headers["User-Agent"].FirstOrDefault();
span.PutHttpUserAgentAttribute(userAgent);
span.PutHttpRawUrlAttribute(GetUri(request));
}
