Class: Appsignal::Rack::GenericInstrumentation

Inherits:
Object
  • Object
show all
Defined in:
lib/appsignal/rack/generic_instrumentation.rb

Instance Method Summary collapse

Constructor Details

#initialize(app, options = {}) ⇒ GenericInstrumentation

Returns a new instance of GenericInstrumentation.



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# File 'lib/appsignal/rack/generic_instrumentation.rb', line 6

def initialize(app, options = {})
  Appsignal.logger.debug 'Initializing Appsignal::Rack::GenericInstrumentation'
  @app, @options = app, options
end

Instance Method Details

#call(env) ⇒ Object 



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# File 'lib/appsignal/rack/generic_instrumentation.rb', line 11

def call(env)
  if Appsignal.active?
    call_with_appsignal_monitoring(env)
  else
    @app.call(env)
  end
end

#call_with_appsignal_monitoring(env) ⇒ Object 



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# File 'lib/appsignal/rack/generic_instrumentation.rb', line 19

def call_with_appsignal_monitoring(env)
  request = ::Rack::Request.new(env)
  transaction = Appsignal::Transaction.create(
    SecureRandom.uuid,
    Appsignal::Transaction::HTTP_REQUEST,
    request
  )
  begin
    Appsignal.instrument('process_action.generic') do
      @app.call(env)
    end
  rescue => error
    transaction.set_error(error)
    raise error
  ensure
    if env['appsignal.route']
      transaction.set_action(env['appsignal.route'])
    else
      transaction.set_action('unknown')
    end
    transaction.set_metadata('path', request.path)
    transaction.set_metadata('method', request.request_method)
    transaction.set_http_or_background_queue_start
    Appsignal::Transaction.complete_current!
  end
end