Class: NewrelicGvl::Rack::Middleware

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

Instance Method Summary collapse

Constructor Details

#initialize(app) ⇒ Middleware

Returns a new instance of Middleware.



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# File 'lib/newrelic_gvl/rack/middleware.rb', line 6

def initialize(app)
  @app = app
end

Instance Method Details

#call(env) ⇒ Object 



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# File 'lib/newrelic_gvl/rack/middleware.rb', line 10

def call(env)
  before = GVLTools::LocalTimer.monotonic_time
  @app.call(env).tap do |response|
    wait_in_ms = (GVLTools::LocalTimer.monotonic_time - before) / 1_000_000.0

    NewRelic::Agent.add_custom_attributes({gvl_wait: wait_in_ms})
  end
end