func()

in plugins/core/tracing.go [201:234]

• 29 lines of code
• 9 McCabe index (conditional complexity)

func (t *Tracer) createSpan0(ctx *TracingContext, parent TracingSpan, pluginOpts []interface{}, coreOpts ...interface{}) (s TracingSpan, err error) {
	ds := NewDefaultSpan(t, parent)
	var parentSpan SegmentSpan
	if parent != nil {
		tmpSpan, ok := parent.(SegmentSpan)
		if ok {
			parentSpan = tmpSpan
		}
	}
	isForceSample := len(ds.Refs) > 0
	// Try to sample when it is not force sample
	if parentSpan == nil && !isForceSample {
		// Force sample
		sampled := t.Sampler.IsSampled(ds.OperationName)
		if !sampled {
			// Filter by sample just return noop span
			s = &NoopSpan{}
			return s, nil
		}
	}
	// process the opts from agent core for prepare building segment span
	for _, opt := range coreOpts {
		opt.(tracing.SpanOption).Apply(ds)
	}
	s, err = NewSegmentSpan(ctx, ds, parentSpan)
	if err != nil {
		return nil, err
	}
	// process the opts from plugin, split opts because the DefaultSpan not contains the tracing context information(AdaptSpan)
	for _, opt := range pluginOpts {
		opt.(tracing.SpanOption).Apply(s)
	}
	return s, nil
}