How to correlate session IDs to make the Recorder script reusable

Gatling (Open-Source)
1

I’m new to Gatling. How to correlate session IDs to make this script reusable? Of course, running it produces errors with the recorded Session IDs (“looking for [200-209 or 304] getting 411”). Currently 1 user (will add users after this problem solved):

package employeeClockOperation

import scala.concurrent.duration._
import io.gatling.core.Predef._
import io.gatling.http.Predef._
import io.gatling.jdbc.Predef._
//import com.typesafe.config.ConfigFactory;

class rsClockInThenOutMinimal extends Simulation {

val httpProtocol = http
.baseURL(“http://dmilaptop101:81”)
.inferHtmlResources(BlackList("""….css""", “”"..js""", “”".*.ico"""), WhiteList())
.acceptHeader(“application/json”)
.acceptEncodingHeader(“gzip, deflate”)
.acceptLanguageHeader(“en-US,en;q=0.5”)
.userAgentHeader(“Mozilla/5.0 (Windows NT 10.0; WOW64; rv:50.0) Gecko/20100101 Firefox/50.0”)

val headers_0 = Map(
“Company-Namespace” → “”,
“Content-Type” → “application/json”,
“Geoposition” → “”,
“Kiosk-Id” → “”,
“Session-Id” → “”)

val headers_1 = Map(
“Content-Type” → “application/x-www-form-urlencoded;charset=utf-8”,
“Geoposition” → “”,
“Kiosk-Id” → “”,
“Session-Id” → “8b1f64d5-1ec0-48fa-b449-d19b719d698d”) // line 30, repeated below (line 35) & in confirmClockIn (line 88)

val headers_2 = Map(
“Geoposition” → “”,
“Kiosk-Id” → “”,
“Session-Id” → “8b1f64d5-1ec0-48fa-b449-d19b719d698d”) // repeated session ID line 35

val headers_5 = Map(
“Geoposition” → “”,
“Kiosk-Id” → “”,
“Session-Id” → “”)

val headers_7 = Map(
“Content-Type” → “application/x-www-form-urlencoded;charset=utf-8”,
“Geoposition” → “”,
“Kiosk-Id” → “”,
“Session-Id” → “6be2fb1b-0e0a-4501-962c-fd1497c88271”) // line 46, repeated below (line 51) & in confirmClockOut (line 126)

val headers_8 = Map(
“Geoposition” → “”,
“Kiosk-Id” → “”,
“Session-Id” → “6be2fb1b-0e0a-4501-962c-fd1497c88271”) // repeated session id line 51

val uri1 = “http://dmilaptop101:81/api/v0000”

val scn = scenario(“rsClockInThenOutMinimal”).exec(ClockIn.clockIn, ConfirmClockIn.confirmClockIn, ClockOut.clockOut, ConfirmClockOut.confirmClockOut)
// home

object ClockIn {
// clockIn
val clockIn = exec(
http(“request_0”)
//.exec(http(“request_0”)
//.get("/")
//.pause(1)
.post("/api/v0000/employeeSessions/0/ApplicationLogOn")
.headers(headers_0)
.body(RawFileBody(“rsClockInThenOutMinimal_0000_request.txt”))
.resources(http(“request_1”)
.post("/api/v0000/clockOperation/0/StartClockIn")
.headers(headers_1),
http(“request_2”)
.get("/api/v0000/webClockHeader/0/GetHeaderInformation")
.headers(headers_2))
).pause(2)
}

object ConfirmClockIn {
// confirmClockIn
val confirmClockIn = exec(
http(“request_3”)
//.exec(http(“request_3”)
//.get("/"))
//.pause(1)
.post("/api/v0000/clockOperation/0/ConfirmEmployee")
.headers(headers_1)
.resources(http(“request_4”)
//.check(bodyString.transform(s => s.replaceAll(""", “”)).saveAs(“ClockInSessionId”))
.post("/api/v0000/employeeSessions/8b1f64d5-1ec0-48fa-b449-d19b719d698d/LogOff") //repeated session id line 88
.headers(headers_1),
http(“request_5”)
.get("/api/v0000/employeeLoginValues/4/GetInfo?companyNamespace=&applicationId=130")
.headers(headers_5))
).pause(20)
}

object ClockOut {
// clockOut
val clockOut = exec(
http(“request_6”)
//.exec(http(“request_6”)
//.get("/"))
//.pause(1)
.post("/api/v0000/employeeSessions/0/ApplicationLogOn")
.headers(headers_0)
.body(RawFileBody(“rsClockInThenOutMinimal_0006_request.txt”))
.resources(http(“request_7”)
.post("/api/v0000/clockOperation/0/StartClockOut")
.headers(headers_7),
http(“request_8”)
.get("/api/v0000/webClockHeader/0/GetHeaderInformation")
.headers(headers_8))
).pause(2)
}

object ConfirmClockOut {
// confirmClockOut
val confirmClockOut = exec(
http(“request_9”)
//.exec(http(“request_9”)
//.get("/"))
//.pause(1)
.post("/api/v0000/clockOperation/0/ConfirmEmployee")
.headers(headers_7)
//.pause(1)
.resources(http(“request_10”)
.post("/api/v0000/employeeSessions/6be2fb1b-0e0a-4501-962c-fd1497c88271/LogOff") // repeated session id, line 126
.headers(headers_7))
.resources(http(“request_11”)
.get("/api/v0000/employeeLoginValues/4/GetInfo?companyNamespace=&applicationId=130")
.headers(headers_5))
).pause(1)
}
setUp(scn.inject(atOnceUsers(1))).protocols(httpProtocol)
}

Thanks in advance for any help with this!

2

I’m using Gatling 2.2.3

3

Well, record & playback brings you only so far - I assume you need to start coding

  • One API call returns the “session id” you are interested in and store it in the virtual user’s session
  • The other endpoint invocations pick up the “sessionId” and send it over the wire