class ElasticAPM::Instrumenter

def update_span_metrics(span)
  return unless span.transaction.collect_metrics?
  tags = {
    'span.type': span.type,
    'transaction.name': span.transaction.name,
    'transaction.type': span.transaction.type
  }
  tags[:'span.subtype'] = span.subtype if span.subtype
  @metrics.get(:breakdown).timer(
    :'span.self_time.sum.us',
    tags: tags, reset_on_collect: true
  ).update(span.self_time)
  @metrics.get(:breakdown).counter(
    :'span.self_time.count',
    tags: tags, reset_on_collect: true
  ).inc!
end