Class: Contrast::Extension::Assess::FiberPropagator

Inherits:
Object
  • Object
show all
Includes:
Components::Interface
Defined in:
lib/contrast/extension/assess/fiber.rb,
ext/cs__assess_fiber_track/cs__assess_fiber_track.c

Overview

This Class provides us with a way to invoke Regexp propagation for those methods which are too complex to fit into one of the standard Contrast::Agent::Assess::Policy::Propagator molds without cluttering up the Fiber Class or exposing our methods there.

Class Method Summary collapse

Methods included from Components::Interface

included

Class Method Details

.instrument_fiber_track ⇒ Object 



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# File 'lib/contrast/extension/assess/fiber.rb', line 100

def instrument_fiber_track
  @_instrument_fiber_variables ||= begin
    require 'cs__assess_fiber_track/cs__assess_fiber_track' if Funchook.available?
    true
  end
rescue StandardError, LoadError => e
  logger.error('Error loading fiber track patch', e)
  false
end

.track_rb_fiber_new(fiber, _enum, _enum_method, underlying, _underlying_method) ⇒ Object 



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# File 'lib/contrast/extension/assess/fiber.rb', line 80

def track_rb_fiber_new fiber, _enum, _enum_method, underlying, _underlying_method
  return unless ASSESS.enabled?
  return unless underlying.is_a?(String) && !underlying.empty?

  with_contrast_scope do
    properties = Contrast::Agent::Assess::Tracker.properties(fiber)
    return unless properties

    properties.splat_from(underlying, fiber)
    properties.build_event(
        FIBER_NEW_NODE,
        fiber,
        underlying,
        fiber,
        [])
  end
rescue Exception => e # rubocop:disable Lint/RescueException
  logger.error('Unable to propagate during Fiber.new', e)
end

.track_rb_fiber_yield(fiber, _method, results) ⇒ Object 



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# File 'lib/contrast/extension/assess/fiber.rb', line 55

def track_rb_fiber_yield fiber, _method, results
  return unless ASSESS.enabled?

  # results will be nil if StopIteration was raised,
  # otherwise an Array of the yielded arguments
  return unless results.cs__is_a?(Array)

  with_contrast_scope do
    results.each do |result|
      result_properties = Contrast::Agent::Assess::Tracker.properties(result)
      next unless result_properties

      result_properties.splat_from(fiber, result)
      result_properties.build_event(
          FIBER_YIELD_NODE,
          result,
          fiber,
          result,
          [])
    end
  end
rescue Exception => e # rubocop:disable Lint/RescueException
  logger.error('Unable to propagate during Fiber#yield', e)
end