private ISpan StartSpanInternal(
SpanContext parent,
string name,
ISampler sampler,
IEnumerable <ISpan> parentLinks,
bool recordEvents,
Timer timestampConverter)
{
ITraceParams activeTraceParams = this.Options.TraceConfig.ActiveTraceParams;
IRandomGenerator random = this.Options.RandomHandler;
ITraceId traceId;
ISpanId spanId = SpanId.GenerateRandomId(random);
ISpanId parentSpanId = null;
TraceOptionsBuilder traceOptionsBuilder;
if (parent == null || !parent.IsValid)
{
// New root span.
traceId = TraceId.GenerateRandomId(random);
traceOptionsBuilder = TraceOptions.Builder();
}
else
{
// New child span.
traceId = parent.TraceId;
parentSpanId = parent.SpanId;
traceOptionsBuilder = TraceOptions.Builder(parent.TraceOptions);
}
traceOptionsBuilder.SetIsSampled(
MakeSamplingDecision(
parent,
name,
sampler,
parentLinks,
traceId,
spanId,
activeTraceParams));
TraceOptions traceOptions = traceOptionsBuilder.Build();
SpanOptions spanOptions = SpanOptions.None;
if (traceOptions.IsSampled || recordEvents)
{
spanOptions = SpanOptions.RecordEvents;
}
ISpan span = Span.StartSpan(
SpanContext.Create(traceId, spanId, traceOptions, parent?.Tracestate ?? Tracestate.Empty),
spanOptions,
name,
this.Kind,
parentSpanId,
activeTraceParams,
this.Options.StartEndHandler,
timestampConverter);
LinkSpans(span, parentLinks);
return(span);
}
/// <inheritdoc/>
public ISpan StartSpan()
{
SpanContext parentContext = FindParent(this.parentType, this.parent, this.parentSpanContext);
var activeTraceParams = this.options.TraceConfig.ActiveTraceParams;
var random = this.options.RandomHandler;
TraceId traceId;
var spanId = SpanId.GenerateRandomId(random);
SpanId parentSpanId = null;
TraceOptionsBuilder traceOptionsBuilder;
if (parentContext == null || !parentContext.IsValid)
{
// New root span.
traceId = TraceId.GenerateRandomId(random);
traceOptionsBuilder = TraceOptions.Builder();
}
else
{
// New child span.
traceId = parentContext.TraceId;
parentSpanId = parentContext.SpanId;
traceOptionsBuilder = TraceOptions.Builder(parentContext.TraceOptions);
}
traceOptionsBuilder.SetIsSampled(
MakeSamplingDecision(
parentContext,
this.name,
this.sampler,
this.links,
traceId,
spanId,
activeTraceParams));
var traceOptions = traceOptionsBuilder.Build();
var spanOptions = SpanOptions.None;
if (traceOptions.IsSampled || this.recordEvents)
{
spanOptions = SpanOptions.RecordEvents;
}
var span = Span.StartSpan(
SpanContext.Create(traceId, spanId, traceOptions, parentContext?.Tracestate ?? Tracestate.Empty),
spanOptions,
this.name,
this.kind,
parentSpanId,
activeTraceParams,
this.options.StartEndHandler,
this.timestampConverter);
LinkSpans(span, this.links);
return(span);
}