note
	description: "Base class for all profiling nodes"
	author: "Comerge AG, DR"
	date: "$Date$"
	revision: "$Revision$"

deferred class
	AP_PROFILING_NODE

inherit
	A_NODE
		redefine
			ems_connection,
			aranea_prefix,
			config_parser,
			create_backend_listener,
			log_level
		end

	PROFILING_CONSTANTS

--create
--	make_profiling_node

feature -- Creation

	make_profiling_node
			-- Create the node
		do
			create app_timestamps.make_default
			create ems_timestamps.make_default
			create backend_listener.make (Current)

			-- we don't want to use any config file therefore we create a test node
			make_test_node
		end


feature -- Access

	Name: attached STRING
		once
			Result := "Aranea Profiling Node"
		end

	Version: attached STRING
		once
			Result := "$Revision$"
		end

	ems_connection: STRING
			-- EMS connection string.
		once
			Result := default_ems_connection
			Result := Result.twin
		end

	aranea_prefix: STRING
			-- Aranea queue prefix
		once
			Result := aranea_queue_name_prefix
			Result := Result.twin
		end

	config_parser: A_CONF_PARSER
			-- Access to the configuration values
		once
			Result := create {A_TEST_CONF_PARSER}.make_test
		end

	clean_results
			-- additional cleanup operations before the results are being computed
		do
			-- empty default implementation, redefine if needed
		end

	log_level: L4E_PRIORITY
		do
			Result := warn_p
		end


feature -- Measurement

	app_timestamps: DS_ARRAYED_LIST [INTEGER_64]
		-- timestamps taken in the application layer

	ems_timestamps: DS_ARRAYED_LIST [INTEGER_64]
		-- timestamps taken in the ems layer

feature {NONE} -- Implementation

	backend_listener: AP_BACKEND_LISTENER

	create_msg_factory: A_MESSAGE_FACTORY
			-- Create the message factory
		local
			l_factory: AP_MESSAGE_FACTORY
		do
			create l_factory.make
--			l_factory.set_node (Current)
--			create {AP_PROFILING_MESSAGE_FACTORY}Result.make
			Result := l_factory
		end

	create_backend_listener: A_BACKEND_LISTENER
			-- Creates a backend listener.
		do
			Result := backend_listener
		end
end