Module: TemplateStreaming::NewRelic::TransactionSample

Defined in:
lib/template_streaming/new_relic.rb

Instance Method Summary collapse

Instance Method Details

#bump_by(delta) ⇒ Object

Return a copy of this sample with the segment timestamps all incremented by the given delta.

Note that although the returned object is a different TransactionSample instance, the segments will be the same objects, modified in place. We would modify the TransactionSample in place too, only this method is called on frozen samples.



468
469
470
471
472
473
 
# File 'lib/template_streaming/new_relic.rb', line 468

def bump_by(delta)
  root_segment.bump_by(delta)
  sample = dup
  sample.instance_eval{@start_time += delta}
  sample
end

#incorporate(samples) ⇒ Object

Put the given samples under this one.

The subroot children of the given samples are moved under this sample’s subroot.



498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
 
# File 'lib/template_streaming/new_relic.rb', line 498

def incorporate(samples)
  incorporated_duration = 0.0
  samples.each do |sample|
    # Bump timestamps by the total length of previous samples.
    sample = sample.bump_by(root_segment.duration + incorporated_duration)
    incorporated_duration += sample.root_segment.duration

    # Merge segments.
    sample.subroot_segment.called_segments.each do |segment|
      subroot_segment.add_called_segment(segment)
    end

    # Merge params.
    if (request_params = sample.params.delete(:request_params))
      params[:request_params].reverse_merge!(request_params)
    end
    if (custom_params = sample.params.delete(:custom_params))
      params[:custom_params] ||= {}
      params[:custom_params].reverse_merge!(custom_params)
    end
    params.reverse_merge!(sample.params)
  end

  root_segment.exit_timestamp += incorporated_duration
  subroot_segment.exit_timestamp += incorporated_duration
end

#subroot_segment ⇒ Object

Return the segment under the root.

If the root segment has more than one child, raise an error. It appears this is never supposed to happen, though–the RPM transaction trace view only ever shows the first segment.



483
484
485
486
487
488
489
490
 
# File 'lib/template_streaming/new_relic.rb', line 483

def subroot_segment
  @subroot_segment ||=
    begin
      (children = @root_segment.called_segments).size == 1 or
        raise Error, "multiple top segments found"
      children.first
    end
end