Class: AppMap::Event::MethodEvent

Inherits:
MethodEventStruct show all
Defined in:
lib/appmap/event.rb

Constant Summary collapse

LIMIT = 
100

Instance Attribute Summary

Attributes inherited from MethodEventStruct

#event, #id, #thread_id

Class Method Summary collapse

Class Method Details

.best_class_name(value) ⇒ Object

Heuristic for dynamically defined class whose name can be nil



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# File 'lib/appmap/event.rb', line 52

def best_class_name(value)
  value_cls = value.class
  while value_cls.name.nil?
    value_cls = value_cls.superclass
  end
  value_cls.name
end

.build_from_invocation(event_type, event:) ⇒ Object 



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# File 'lib/appmap/event.rb', line 24

def build_from_invocation(event_type, event:)
  event.id = AppMap::Event.next_id_counter
  event.event = event_type
  event.thread_id = Thread.current.object_id
end

.custom_display_string(value) ⇒ Object 



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# File 'lib/appmap/event.rb', line 60

def custom_display_string(value)
  case value
  when File
    "#{value.class}[path=#{value.path}]"
  when Net::HTTP
    "#{value.class}[#{value.address}:#{value.port}]"
  when Net::HTTPGenericRequest
    "#{value.class}[#{value.method} #{value.path}]"
  end
rescue StandardError
  nil
end

.default_display_string(value) ⇒ Object 



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# File 'lib/appmap/event.rb', line 73

def default_display_string(value)
  last_resort_string = lambda do
    warn "AppMap encountered an error inspecting a #{value.class.name}: #{$!.message}"
    '*Error inspecting variable*'
  end

  begin
    value.to_s
  rescue NoMethodError
    begin
      value.inspect
    rescue StandardError
      last_resort_string.call
    end
  rescue StandardError
    last_resort_string.call
  end
end

.display_string(value) ⇒ Object

Gets a display string for a value. This is not meant to be a machine deserializable value.



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# File 'lib/appmap/event.rb', line 31

def display_string(value)
  return nil unless value

  value_string = custom_display_string(value) || default_display_string(value)

  (value_string||'')[0...LIMIT].encode('utf-8', invalid: :replace, undef: :replace, replace: '_')
end

.object_properties(hash_like) ⇒ Object 



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# File 'lib/appmap/event.rb', line 39

def object_properties(hash_like)
  hash = hash_like.to_h
  hash.keys.map do |key|
    {
      name: key,
      class: hash[key].class.name,
    }
  end
rescue
  nil
end