Class: QueryTraceSummary::EventSummary

Inherits:
Object
  • Object
show all
Defined in:
lib/event_summary.rb

Constant Summary collapse

ASCII_COLOR_RX = 
/\e\[\d+m/
EVENT_RX = 
/([A-Z][A-Za-z0-9_:]+) (Create|Load|Update|Destroy) \((\d+(?:\.\d+)?)ms\)/
LOCATION_PREFIX_RX = 
/Query Trace:$/
LOCATION_RX =

Assumes conservative file naming

/([a-zA-Z0-9_.\-\/]+:\d+:in `.+')$/

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(model, action, location) ⇒ EventSummary

Returns a new instance of EventSummary.



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# File 'lib/event_summary.rb', line 15

def initialize(model, action, location)
  @model = model
  @action = action
  @location = location
  @total_time = @calls = 0
end

Instance Attribute Details

#action ⇒ Object

Returns the value of attribute action.



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# File 'lib/event_summary.rb', line 5

def action
  @action
end

#calls ⇒ Object

Returns the value of attribute calls.



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# File 'lib/event_summary.rb', line 5

def calls
  @calls
end

#location ⇒ Object

Returns the value of attribute location.



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# File 'lib/event_summary.rb', line 5

def location
  @location
end

#model ⇒ Object

Returns the value of attribute model.



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# File 'lib/event_summary.rb', line 5

def model
  @model
end

#total_time ⇒ Object

Returns the value of attribute total_time.



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# File 'lib/event_summary.rb', line 5

def total_time
  @total_time
end

Class Method Details

.parse_files(*file_names) ⇒ Object

Gathers all of the events in provided files and returns array of event summaries sorted in descending order by their total time



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# File 'lib/event_summary.rb', line 25

def self.parse_files(*file_names)
  events = {}

  event_match = nil

  each_line(*file_names) do |line|
    # Previous line was an event
    if event_match
      location_match = LOCATION_RX.match(line)
      if location_match
        model, action, time = event_match.captures
        location = location_match.captures.first

        key = "#{model}/#{action}/#{location}"

        event = events[key] ||= new(model, action, location)
        event.calls += 1
        event.total_time += time.to_d

        event_match = nil

        next
      elsif LOCATION_PREFIX_RX.match(line)
        next
      end
    end

    event_match = EVENT_RX.match(line)
  end

  events.values.sort_by { |summary| -summary.total_time }
end