Class: ScoutApm::Utils::MarshalLogging

Inherits:
Object
  • Object
show all
Defined in:
lib/scout_apm/utils/marshal_logging.rb

Instance Method Summary collapse

Constructor Details

#initialize(base_obj) ⇒ MarshalLogging

Returns a new instance of MarshalLogging.



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# File 'lib/scout_apm/utils/marshal_logging.rb', line 25

def initialize(base_obj)
  @base_obj = base_obj
end

Instance Method Details

#dive ⇒ Object 



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# File 'lib/scout_apm/utils/marshal_logging.rb', line 29

def dive
  to_investigate = [InstanceVar.new('Root', @base_obj, nil)]
  max_to_check = 10000
  checked = 0

  while (var = to_investigate.shift)
    checked += 1 
    if checked > max_to_check
      return "Limiting Checks (max = #{max_to_check})"
    end

    obj = var.obj

    if offending_hash?(obj)
      return "Found undumpable object: #{var.history}"
    end

    if !dumps?(obj)
      if obj.is_a? Hash
        keys = obj.keys
        keys.each do |key|
          to_investigate.push(
            InstanceVar.new(key.to_s, obj[key], var)
          )
        end
      elsif obj.is_a? Array
        obj.each_with_index do |value, idx|
          to_investigate.push(
            InstanceVar.new("Index #{idx}", value, var)
          )
        end
      else
        symbols = obj.instance_variables
        if !symbols.any?
          return "Found undumpable object: #{var.history}"
        end

        symbols.each do |sym|
          to_investigate.push(
            InstanceVar.new(sym, obj.instance_variable_get(sym), var)
          )
        end
      end
    end
  end

  true
end

#dumps?(obj) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/scout_apm/utils/marshal_logging.rb', line 78

def dumps?(obj)
  Marshal.dump(obj)
  true
rescue TypeError
  false
end

#offending_hash?(obj) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/scout_apm/utils/marshal_logging.rb', line 85

def offending_hash?(obj)
  obj.is_a?(Hash) && !obj.default_proc.nil?
end