vADC Forum

New Contributor
Posts: 3
Registered: ‎05-22-2014
Accepted Solution

execute command from trafficscript

is there a way to execute a system command from within trafficscript?

For example. If i wanted to place a message on to message bus based on an event triggered in a trafficscript rule. i may want to 

  1. @args = ("/usr/bin/msgq", "arg1", "arg2");
  2.    system(@args) == 0
  3.   or die "system @args failed: $?"

But i cant see system() or exec() within the trafficscript documentation.

I note i can run arbitrary commands for other "events", but rules appear to be TS only.

Please advise.

Posts: 232
Registered: ‎11-29-2012

Re: execute command from trafficscript


     There is no direct way to make a system call to execute something from TrafficScript equivalent to system() or exec functions in other languages..

There are some ways in which functionality like this can be emulated but with a few caveats:

1) "Non blocking ONE-WAY" execution (ie: one where the output of the executed event cannot be processes) in a "fire and forget" fashion. This is useful for a custom alert program that something happened.

  • Using the TrafficScript function event.emit() you can trigger a customised event that can then have an action associated with it under system > alerting to trigger an executable script uploaded to the STM "Extra Files" section (under Catalogs > Extrafiles)

2) "A Blocking Interactive" execution (ie: one where the output of the executed event can be processed). This is useful if the output of the execution needs to be processed:

  • Using the http.request.*() TrafficScript functions, an interactive http request can be issued to a remote HTTP server that executes the needed code (maybe as a GCI-BIN for example) and returns the appropriate data/value that the TrafficScript can then parse appropriately. Be aware that the http.request.*() functions cannot be used in completion rules.
  • Using the TrafficScript function to execute a custom Java Applet on the STM. Be aware that can only be used with TCP-based protocols and cannot be used in completion rules.

Does this help?



Join the Community

Get quick and easy access to valuable resource designed to help you manage your Brocade Network.