driver.input

Example of input commands for the driver of the forwarding table. The syntax of commands is somehow similar to the syntax of C, especially that of literal values.

//
// C-style and C++-style comments are allowed.
//
ifconfig 2      price < 500,
                dest = "MXP",
                classes ** "Y"                          // ** means substring
        |
                alert = "connection refused",
                host = "www.example.com",
                port = 23
        |
                auction_group =* "guitars/electric",    // =* means prefix
                maker = "PRS",
                price < 2000
                
ifconfig 10     dest = "LGA",
                price < 300
        |
                system = "Siena",
                new_release = true
        |
                team > "d",
                team < "s",
                score > 0

//
// you can specify constaints for any value and/or any type.
//
ifconfig 20     dest any string,
                price < 300
        |
                system = "Siena",
                release any any

//
// before using the forwarding table to process messages, 
// we *must* consolidate its data structures.  
//
%consolidate

//
// the driver has the ability to collect statistics regarding the
// forwarding table, including the amount of processing (user) time
//
%timer_start

select          carrier = "UA"
                orig = "DEN"
                dest = "MXP"
                price = 700
                stops = 1
                classes = "Q,Y,P,F"

select          carrier = "UA"
                orig = "DEN"
                dest = "LGA"
                price = 200
                stops = 0
                classes = "Y,P"
%timer_stop
%print_statistics
//
// we can also change the number of pre-processing rounds here...
//
%pre_processing_limit = 20
%timer_start

select          carrier = "UA"
                orig = "DEN"
                dest = "MXP"
                price = 700
                stops = 1
                classes = "Q,Y,P,QF"

select          carrier = "UA"
                orig = "DEN"
                dest = "LGA"
                price = 200
                stops = 0
                classes = "Y,P"
%timer_stop
//
// we can clear the forwarding table using this command
//
%clear
//
// %clear also deallocates all the memory used by the forwarding table
// in order to clear the table maintaining (i.e., recycling) the
// allocated memory, we could use this:
// 
// %clear_recycle
//