Class: Rack::Insight::SpeedTracer::Tracer

Inherits:
Object
  • Object
show all
Defined in:
lib/rack/insight/panels/speedtracer_panel/tracer.rb

Instance Method Summary collapse

Constructor Details

#initialize(table) ⇒ Tracer

Returns a new instance of Tracer.



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# File 'lib/rack/insight/panels/speedtracer_panel/tracer.rb', line 4

def initialize(table)
  @pstack = []
  @table = table
  @event_id = 0
end

Instance Method Details

#after_detect(method_call, timing, arguments, result) ⇒ Object 



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# File 'lib/rack/insight/panels/speedtracer_panel/tracer.rb', line 29

def after_detect(method_call, timing, arguments, result)
  event = @pstack.pop
  if event.nil?
  else
    event.finish

    unless (parent = @pstack.last).nil?
      parent.children.push event
    else
      @children.push event
    end
  end
end

#before_detect(method_call, arguments) ⇒ Object 



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# File 'lib/rack/insight/panels/speedtracer_panel/tracer.rb', line 19

def before_detect(method_call, arguments)
  @event_id += 1

  #arguments_string = make_string_of(arguments)
  arguments_string = ""
  #XXX ServerEvent use method call...
  event = ServerEvent.new(method_call, arguments_string)
  @pstack.push event
end

#make_string_of(array) ⇒ Object 



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# File 'lib/rack/insight/panels/speedtracer_panel/tracer.rb', line 43

def make_string_of(array)
  array.map do |item|
    short_string(item)
  end.join(",")
end

#request_finish(env, status, headers, body, timing) ⇒ Object 



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# File 'lib/rack/insight/panels/speedtracer_panel/tracer.rb', line 15

def request_finish(env, status, headers, body, timing)
  env["rack-insight.speedtracer-record"] = @pstack.pop
end

#request_start(env, start) ⇒ Object 



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# File 'lib/rack/insight/panels/speedtracer_panel/tracer.rb', line 10

def request_start(env, start)
  id, method, uri = env.values_at("rack-insight.speedtracer-id", "REQUEST_METHOD", "PATH_INFO")
  @pstack.push RequestRecord.new(id, method, uri)
end

#short_string(item, max_per_elem = 50) ⇒ Object 



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# File 'lib/rack/insight/panels/speedtracer_panel/tracer.rb', line 49

def short_string(item, max_per_elem = 50)
  begin
    string = item.inspect
    if string.length > max_per_elem
      case item
      when NilClass
        "nil"
      when Hash
        "{ " + item.map do |key, value|
          short_string(key, 15) + "=>" + short_string(value, 30)
        end.join(", ") + " }"
      when find_constant("ActionView::Base")
        tmpl = item.template
        if tmpl.nil?
          item.path.inspect
        else
          [tmpl.base_path, tmpl.name].join("/")
        end
      when find_constant("ActiveRecord::Base")
        string = "#{item.class.name}(#{item.id})"
      else
        string = item.class.name
      end
    else
      string
    end
  rescue Exception => ex
    "..."
  end
end