Class: Appsignal::Rack::RailsInstrumentation

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

Instance Method Summary collapse

Constructor Details

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

Returns a new instance of RailsInstrumentation.



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

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

Instance Method Details

#call(env) ⇒ Object 



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# File 'lib/appsignal/rack/rails_instrumentation.rb', line 12

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/rails_instrumentation.rb', line 20

def call_with_appsignal_monitoring(env)
  request = ActionDispatch::Request.new(env)
  transaction = Appsignal::Transaction.create(
    request_id(env),
    Appsignal::Transaction::HTTP_REQUEST,
    request,
    :params_method => :filtered_parameters
  )
  begin
    @app.call(env)
  rescue => error
    transaction.set_error(error)
    raise error
  ensure
    controller = env["action_controller.instance"]
    if controller
      transaction.set_action("#{controller.class}##{controller.action_name}")
    end
    transaction.set_http_or_background_queue_start
    transaction.set_metadata("path", request.path)
    transaction.set_metadata("method", request.request_method)
    Appsignal::Transaction.complete_current!
  end
end

#request_id(env) ⇒ Object 



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# File 'lib/appsignal/rack/rails_instrumentation.rb', line 45

def request_id(env)
  env["action_dispatch.request_id"] || SecureRandom.uuid
end