/// <inheritdoc/>
public ISpan Start()
{
Trace.ISpan span = null;
SpanCreationOptions options = null;
if (this.explicitStartTime != null || this.links != null)
{
options = new SpanCreationOptions
{
StartTimestamp = this.explicitStartTime ?? default,
Links = this.links,
};
}
// If specified, this takes precedence.
if (this.ignoreActiveSpan)
{
span = this.tracer.StartRootSpan(this.spanName, this.spanKind, options);
}
else if (this.parentSpan != null)
{
span = this.tracer.StartSpan(this.spanName, this.parentSpan, this.spanKind, options);
}
else if (this.parentSpanContext != null && this.parentSpanContext.IsValid)
{
span = this.tracer.StartSpan(this.spanName, this.parentSpanContext, this.spanKind, options);
}
else if (this.parentSpan == null && (this.parentSpanContext == null || !this.parentSpanContext.IsValid) && (this.tracer.CurrentSpan == null || this.tracer.CurrentSpan == Trace.BlankSpan.Instance))
{
// We need to know if we should inherit an existing Activity-based context or start a new one.
if (System.Diagnostics.Activity.Current != null && System.Diagnostics.Activity.Current.IdFormat == System.Diagnostics.ActivityIdFormat.W3C)
{
var currentActivity = System.Diagnostics.Activity.Current;
if (this.rootOperationNamesForActivityBasedAutoCollectors.Contains(currentActivity.OperationName))
{
this.tracer.StartSpanFromActivity(this.spanName, currentActivity, this.spanKind, this.links);
span = this.tracer.CurrentSpan;
}
}
}
if (span == null)
{
span = this.tracer.StartSpan(this.spanName, null, this.spanKind, options);
}
foreach (var kvp in this.attributes)
{
span.SetAttribute(kvp);
}
if (this.error)
{
span.Status = Trace.Status.Unknown;
}
return(new SpanShim(span));
}
public SpanShim(Trace.ISpan span)
{
this.Span = span ?? throw new ArgumentNullException(nameof(span));
if (this.Span.Context == null)
{
throw new ArgumentNullException(nameof(this.Span.Context));
}
this.spanContextShim = new SpanContextShim(this.Span.Context);
}
/// <inheritdoc/>
public ISpanBuilder AsChildOf(ISpan parent)
{
if (parent == null)
{
return(this);
}
if (!this.ParentSet)
{
this.parentSpan = GetOpenTelemetrySpan(parent);
return(this);
}
return(this.AsChildOf(parent.Context));
}
public ScopeAdapter(Trace.ISpan span, Action disposeAction = null)
{
this.Span = new SpanShim(span);
this.disposeAction = disposeAction;
}
