Sentry - skip fast transactions

sentry.rb

# /config/initializers/sentry.rb

config.before_send_transaction = lambda do |event, _hint|
  relevant_span = event.spans.find { |s| s[:op] == 'view.process_action.action_controller' }
  if relevant_span
    sampling_config = { 50 => 1, 200 => 10, 500 => 20, 1000 => 50 }

    duration_in_ms = (relevant_span[:timestamp] - relevant_span[:start_timestamp]) * 1000

    sampling_percentage = sampling_config.
                          sort.
                          find { |threshold, _percentage| duration_in_ms <= threshold }.
                          try(:[], 1) || 100

    # Perform the sampling check
    Random.rand(100) <= sampling_percentage ? event : nil
  else
    event
  end
end

This can be simplified if don't have a sampling_config:

config.before_send_transaction = lambda do |event, _hint|
  relevant_span = event.spans.find { |s| s[:op] == 'view.process_action.action_controller' }
  if relevant_span
    duration_in_ms = (relevant_span[:timestamp] - relevant_span[:start_timestamp]) * 1000

    sampling_percentage = duration_in_ms <= 100 ? 1 : 100

    # Perform the sampling check
    Random.rand(100) <= sampling_percentage ? event : nil
  else
    event
  end
end