Class: LlmCostTracker::Capture::StreamTracker

Inherits:
Object
  • Object
show all
Defined in:
lib/llm_cost_tracker/capture/stream_tracker.rb

Instance Method Summary collapse

Constructor Details

#initialize(stream:, collector:, active:, finish: nil) ⇒ StreamTracker

Returns a new instance of StreamTracker.



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# File 'lib/llm_cost_tracker/capture/stream_tracker.rb', line 11

def initialize(stream:, collector:, active:, finish: nil)
  @stream = stream
  @collector = collector
  @active = active
  @finish = finish || proc { |errored| collector.finish!(errored: errored) }
  @finished_ref = [false]
  @attempted_ref = [false]
  @capture_failed = false
  @mutex = Mutex.new
end

Instance Method Details

#wrap ⇒ Object 



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# File 'lib/llm_cost_tracker/capture/stream_tracker.rb', line 22

def wrap
  return @stream unless @stream

  iterator_wrapped = false
  if @stream.instance_variable_defined?(:@iterator)
    iterator = @stream.instance_variable_get(:@iterator)
    if iterator.respond_to?(:each)
      @stream.instance_variable_set(:@iterator,
                                    Enumerator.new do |yielder|
                                      each_from(iterator) { |event| yielder << event }
                                    end)
      iterator_wrapped = true
    end
  end
  each_wrapped = false
  if !iterator_wrapped && @stream.respond_to?(:each)
    wrap_each
    each_wrapped = true
  end
  unless iterator_wrapped || each_wrapped
    Logging.warn(
      "stream integration found no wrappable iterator on #{@stream.class} " \
      "(missing both `@iterator` ivar and `#each`); usage will not be captured"
    )
  end

  register_orphan_finalizer
  @stream
rescue StandardError => e
  Logging.warn("stream integration failed to install wrapper: #{e.class}: #{e.message}")
  @stream
end