Gatling feed an ArrayList of random strings-CodePudding

I have gatling script to send HTTP request with an array of 10,000 email addresses, the JSON body is like this one:

{
  "userIds": [
    "[email protected]",
    "[email protected]",
    "[email protected]",
    "[email protected]",
    "[email protected]",
    .
    .
    .
    "[email protected]"
  ]
}

So, I generate an ArrayList of 10,000 random email addresses:

val emails = new util.ArrayList[String]
  for(i <- 1 to 10000) {
    emails.add("\""   Random.alphanumeric.take(8).mkString.toLowerCase  
      "@"   Random.alphanumeric.take(10).mkString.toLowerCase   ".com\"")
  }

And I need to feed that ArrayList into my scenario:

  val scn = scenario("Add Users")
    .exec(
      http("AddUsers")
        .post(path)
        .header("Authorization", apiKey)
        .body(StringBody("{"  
          "\n\t\"userIds\": "  
          userNames  
          "\n\t\n"  
          "}")).asJson
    )

The problem is that the same array sent to all the requests in my scenario, and I need to generate a different array every time.

I guess I need to convert my ArrayList to a feeder or an Iterator but I'm stuck on it.

Is it possible to do such thing in Gatling?

CodePudding user response：

I found the answer.

I created a function to build the ArrayList of random emails:

def getEmailsArray(count: Integer): util.ArrayList[String] = {
    val emails = new util.ArrayList[String]
    for (i <- 1 to count) {
      emails.add("\""   Random.alphanumeric.take(8).mkString.toLowerCase  
        "@"   Random.alphanumeric.take(10).mkString.toLowerCase   ".com\"")
    }
    emails
  }

Then I get the ArrayList into a feeder:

val emailsFeeder = Iterator.continually(Map("emails" -> getEmailsArray(totalEmails)))