Class: Pliny::Middleware::Metrics

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

Instance Method Summary collapse

Constructor Details

#initialize(app) ⇒ Metrics

Returns a new instance of Metrics.



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# File 'lib/pliny/middleware/metrics.rb', line 3

def initialize(app)
  @app = app
end

Instance Method Details

#call(env) ⇒ Object 



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# File 'lib/pliny/middleware/metrics.rb', line 7

def call(env)
  start = Time.now

  Pliny::Metrics.count("requests")

  begin
    status, headers, body = @app.call(env)
  rescue
    status = 500
    raise
  ensure
    elapsed = (Time.now - start).to_f
    Pliny::Metrics.measure("requests.latency", value: elapsed)

    status_level = "#{status/100}xx"
    Pliny::Metrics.count("requests.status.#{status_level}")
  end

  [status, headers, body]
end