How to read data from json array and pass it to Gatling on run time in loop

Question

I am new to gatling and scala. I am trying to do following thing:-

test.json:
[
  {
    "code": "AML",
    "data": "aaasdfgghh"
  },
  {
    "code": "ABC",
    "data": "aaasdfgghh"
  },
  {
    "code": "SDF",
    "data": "aaasdfgghh"
  }
]

Now i want to read this json key/value in loop. Currently i am doing like this:

Request Body and feeder:-

   val jsonFileFeederFundsDoc: SourceFeederBuilder[Any] = 
                  jsonFile("test.json").circular

   //Saves locally and to S3
   val upload_fund_s3: HttpRequestBuilder =
    http("upload Fund docs Locally")
   .post(onboarding_url_perf + "/document/passfort")
   .headers(basic_headers)
   .headers(auth_headers)
   .body(StringBody(
    """{
      "code":  "${code}",
      "data":  "${data}"
  }"""
  )).asJson
  .check(status.is(200))
  .check(jsonPath("$.id").saveAs("id"))

And My Scenario is :-

val newFundScenario: ScenarioBuilder = scenario("Company Fund Scenarios exists")
.exec(TokenScenario.getCompanyUsersGwtToken).exitHereIfFailed
.exec(CompanyProfileRequest.check_company_exists).exitHereIfFailed
.doIf("${COMPANY_NOT_FOUND}") {
  exec(CompanyProfileRequest.create_company_fund_profile).exitHereIfFailed
}
.feed(UploadFundDocsInPassfort.jsonFileFeederFundsDoc)
.exec(UploadFundDocsInPassfort.upload_fund_s3).exitHereIfFailed
.exec(UploadFundDocsInPassfort.upload_fund_passfort).exitHereIfFailed
.exec(OfficersRequest.create_director).exitHereIfFailed

And my Test Simulation is :

  class TestCompanySimulation extends Simulation {

   private val generalCompanyTestCases = GeneralCompanyScenarios
    .newFundScenario
    .inject(rampUsers(Integer.getInteger("users", 1)) during 
    (Integer.getInteger("ramp", 1) minutes))

    setUp(
      generalCompanyTestCases.protocols(httpConf),
    )
 }

Now the issue is that for one user i want to read data in loop in my newFundScenario but in this case it just picks 1st value from json file.

Something like

 foreach(read data from json file){
 //Pass Data in run time and execute
 .exec(UploadFundDocsInPassfort.upload_fund_s3).exitHereIfFailed
 .exec(UploadFundDocsInPassfort.upload_fund_passfort).exitHereIfFailed
}

Any help is much appreciated.

Regards, Vikram Pathania

James Warr · Accepted Answer · 2019-06-28 06:05:19Z

If you want each user to loop through the feeder, you need to have your feed command inside the loop. For example, if you wanted to make 5 requests...

val upload_fund_s3: ChainBuilder =
repeat(5) {
  feed(jsonFileFeederFundsDoc)
  .exec(
    http("upload Fund docs Locally")
    .post(onboarding_url_perf + "/document/passfort")
    .headers(basic_headers)
    .headers(auth_headers)
    .body(StringBody("""{"code":  "${code}", "data":  "${data}"}""")).asJson
    .check(status.is(200))
    .check(jsonPath("$.id").saveAs("id"))
  )
} //include all the actions you want in the loop

and remove the feed from your scenario definition. This also reads better as your feeder and the actions that use it are defined together.

Be aware that if you start running multiple users in the simulation they will all pull values from the same feeder. You've specified .circular, so it won't run out of values, but each user may be making different requests (which could be fine, depending on what you're modelling)

if your list is small, you could also consider just having a Map and pushing that into the session for iterating over with .foreach

Collectives™ on Stack Overflow

How to read data from json array and pass it to Gatling on run time in loop

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related