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type SpanCollector struct {
	// contains filtered or unexported fields
}

type SpanSource interface {
	// GetOutgoingSpans gives a consumer access to spans they should send
	// If there are no outgoing spans, err will be io.EOF
	// rejectFn allows client to reject spans, so they can be requeued
	// rejectFn must be called, if at all, before the next call to GetOutgoingSpans
	GetOutgoingSpans() (data io.Reader, rejectFn func(), err error)

	// Close closes the SpanSource; the client may not interact with this SpanSource after calling Close
	Close() error
}