Class: Appsignal::Rack::GenericInstrumentation Private

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

This class is part of a private API. You should avoid using this class if possible, as it may be removed or be changed in the future.

Instance Method Summary collapse

Constructor Details

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

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns a new instance of GenericInstrumentation.



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# File 'lib/appsignal/rack/generic_instrumentation.rb', line 9

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

Instance Method Details

#call(env) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/appsignal/rack/generic_instrumentation.rb', line 15

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

#call_with_appsignal_monitoring(env) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/appsignal/rack/generic_instrumentation.rb', line 23

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 Exception => error # rubocop:disable Lint/RescueException
    transaction.set_error(error)
    raise error
  ensure
    if env["appsignal.route"]
      transaction.set_action_if_nil(env["appsignal.route"])
    else
      transaction.set_action_if_nil("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