Class: Corn::Rack::SlowRequestProfiler::ProfilingApp

Inherits:
Object
  • Object
show all
Defined in:
lib/corn/rack/slow_request_profiler.rb

Instance Method Summary collapse

Constructor Details

#initialize(app, config) ⇒ ProfilingApp

Returns a new instance of ProfilingApp.



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# File 'lib/corn/rack/slow_request_profiler.rb', line 16

def initialize(app, config)
  @app = app
  @config = config
  @post = Post.new(config.post_interval)
  @prof = SamplingProf.new(config.sampling_interval)
  at_exit { terminate }
end

Instance Method Details

#call(env) ⇒ Object 



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# File 'lib/corn/rack/slow_request_profiler.rb', line 24

def call(env)
  if @config.profiling?
    @prof.profile(output_handler(env)) { @app.call(env) }
  else
    @app.call(env)
  end
end

#output_handler(env) ⇒ Object 



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# File 'lib/corn/rack/slow_request_profiler.rb', line 37

def output_handler(env)
  request_env = RequestEnv.new(env)
  lambda do |data|
    if request_env.time > @config.slow_request_threshold
      @post.enqueue(request_env.to_report.merge("data" => data))
    end
  end
end

#terminate ⇒ Object 



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# File 'lib/corn/rack/slow_request_profiler.rb', line 32

def terminate
  @prof.terminate rescue nil
  @post.terminate rescue nil
end