Class: StackProf::Middleware

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

Class Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(app) ⇒ Middleware

Returns a new instance of Middleware.



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# File 'lib/stackprof/middleware.rb', line 5

def initialize(app)
  @app = app
  at_exit{ Middleware.save if Middleware.enabled? }
end

Class Attribute Details

.enabled ⇒ Object Also known as: enabled?

Returns the value of attribute enabled.



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# File 'lib/stackprof/middleware.rb', line 18

def enabled
  @enabled
end

Class Method Details

.save ⇒ Object 



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# File 'lib/stackprof/middleware.rb', line 21

def save
  if results = StackProf.results
    FileUtils.mkdir_p('tmp')
    File.open("tmp/stackprof-#{results[:mode]}-#{Process.pid}-#{Time.now.to_i}.dump", 'w') do |f|
      f.write Marshal.dump(results)
    end
  end
end

Instance Method Details

#call(env) ⇒ Object 



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# File 'lib/stackprof/middleware.rb', line 10

def call(env)
  StackProf.start(mode: :cpu, interval: 1000) if self.class.enabled?
  @app.call(env)
ensure
  StackProf.stop if self.class.enabled?
end