Gatling.io share data between virtual users

Question

I\'m using Gatling.io to test a website. I have a scenario with multiple virtual users.

val users = scenario(\"Users\").exec(Session.browse)
val admins = scenari         


        

Answer 1

I think the default Gatling answer for this is to create the session and persist it in a file of some kind and in a new simulation read that value and have the users pick it up. 'Fanning out' is not really a scenario Gatling supports in a single simulation.

That said, you can fudge it if you really want - particularly if you just need one quick execution by the Admin user and you're prepared to define your scenarios within your simulation file.

class simulation extends Simulation {
  private var mySession = "NOT_SET"

val users = scenario("Users").exec(Session.browse)  
val admins = scenario("Admins").exec(Session.create) 
}

as part of the 'Admins' scenario save the value of your session into the 'mySession' var

as part of the users' scenario set a session variable from the 'mySession' var

then run your simulation something like...

setUp(
admins.inject(
  atOnceUsers(1)
),
users.inject(
  nothingFor(1 minutes), //enough time for admins to complete
  atOnceUsers(10) //or however many you need
)

it works ok for quick and dirty data seeding, but you're really cutting against the grain of how Gatling is designed.