Class: Methods::InstanceMethodOverrider

Inherits:
Object
  • Object
show all
Defined in:
lib/xray_method_tracer/methods/instance_method_overrider.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(klass) ⇒ InstanceMethodOverrider

Returns a new instance of InstanceMethodOverrider.



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# File 'lib/xray_method_tracer/methods/instance_method_overrider.rb', line 10

def initialize(klass)
  @klass = klass
end

Instance Attribute Details

#klass ⇒ Object (readonly)

Returns the value of attribute klass.



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# File 'lib/xray_method_tracer/methods/instance_method_overrider.rb', line 8

def klass
  @klass
end

Instance Method Details

#override!(source_locations) ⇒ Object

rubocop:disable Metrics/MethodLength



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# File 'lib/xray_method_tracer/methods/instance_method_overrider.rb', line 15

def override!(source_locations)
  target_method_names = MethodSelector.new(klass).select_method_names_by_source_location(source_locations)
  target_klass = klass

  Module.new do
    require_relative "../utils/segment"
    require_relative "../utils/service_observer"

    target_method_names.each do |method_name|
      define_method(method_name) do |*args, **kwargs, &block|
        begin
          segment = Utils::ServiceObserver.begin_subsegment(
            Utils::Segment.build_name("IM", target_klass.name, method_name)
          )
          segment.add_metadata(:args, Utils::Segment.format_args(args))
          result = if kwargs.empty?
                     super(*args, &block)
                   else
                     segment.add_metadata(:kwargs, kwargs)
                     super(*args, **kwargs, &block)
                   end
        rescue StandardError => e
          segment.add_exception(e)
          raise e
        ensure
          Utils::ServiceObserver.end_subsegment
        end
        result
      end
    end
  end
end