Exit the loop doWhileDuring when i have a match

Gatling (Open-Source)
1

Hi i have this code , i want to exit the loop as soon as i have the match :slight_smile:

	def  repeatVerif(requestName:String, Duration:Int,LoopDuration:Int,ResMessage:String)=
	{
		doWhileDuring(session => session.isFailed,LoopDuration.seconds) {
			exec(ws("SEND_ACK").sendText("""ACK""")
				.await(Duration.milliseconds)(ws.checkTextMessage(requestName).matching(bodyString.is(ResMessage)))) //.onSuccess(session => true)
		}
	}

1- i want to know can i exit the loop before the duration ends
2- the session.isFailed doesn’t seems to work

thanks is advance

2

Pseudo code:

  • enter a doWhileDuring that loop as long as some stop flag does NOT exist (see Gatling EL). Make sure to set the exitASAP optional parameter to false, see Gatling - Scenario
  • in the loop add a saveAs(stop) on your check so the stop flag becomes set when you have a match.
3

thank you for your replay, i tries this :

	def  repeatVerif(requestName:String, Duration:Int,LoopDuration:Int,ResMessage:String)=
	{
		doWhileDuring("!${stop}.exist()}",LoopDuration.seconds,exitASAP = false) {
			exec(ws("SEND_ACK").sendText("""ACK""")
				.await(Duration.milliseconds)(ws.checkTextMessage(requestName).matching(bodyString.is(ResMessage).saveAs("stop")))) //.onSuccess(session => true)
		}
	}

it doesn’t seems to work, in the logs i have :

08:40:20.094 [gatling-1-2] DEBUG io.gatling.http.action.ws.fsm.WsPerformingCheckState - Check timeout
08:40:20.100 [gatling-1-2] DEBUG io.gatling.http.action.ws.fsm.WsPerformingCheckState - Check timeout, failing it and performing next action
08:40:20.108 [gatling-1-2] ERROR io.gatling.core.session.LoopBlock$ - Condition evaluation crashed with message ‘No attribute named ‘stop’ is defined’, exiting loop

4

Please, check the Gatling EL syntax.

I specifically point to "#{foo.isUndefined()}" for your usage.

5

same issue:

	def  repeatVerif(requestName:String, Duration:Int,LoopDuration:Int,ResMessage:String)=
	{
		doWhileDuring("#{stop.isUndefined()}",LoopDuration.seconds,exitASAP = false) {
			exec(ws("SEND_ACK").sendText("""ACK""")
				.await(Duration.milliseconds)(ws.checkTextMessage(requestName).matching(bodyString.is(ResMessage).saveAs("stop")))) //.onSuccess(session => true)
		}
	}

10:29:41.913 [gatling-1-2] DEBUG io.gatling.http.action.ws.fsm.WsPerformingCheckState - Check timeout
10:29:41.913 [gatling-1-2] DEBUG io.gatling.http.action.ws.fsm.WsPerformingCheckState - Check timeout, failing it and performing next action
10:29:41.913 [gatling-1-2] ERROR io.gatling.core.session.LoopBlock$ - Condition evaluation crashed with message ‘Can’t parse ‘#{stop.isUndefined()}’ into boolean’, exiting loop

i think that the problem is with saveAs

6

From this forum requirements:

Use Up-to-Date Versions

Can’t parse ‘#{stop.isUndefined()}

If a documented feature can’t be parsed on your side, what could the issue possibly be? :thinking:

7

thank you for your replay i add this information:

the issue is with the saveAs command, i have this code which work perfectly i added a saveAs at the end :

.onConnected(exec(ws("sendMessageClientID_Connected").sendText("""{"ClientId":"${randomClientID}","Status":"connected"}""")
			.await(7)(ws.checkTextMessage("home_page_Json").matching(bodyString.is(s"${home_page_Json}")saveAs("ssss"))))

		exec { session =>
				println(session("ssss").as[String])
				session
			}

on the logs i see the check success :

11:37:13.692 [gatling-1-2] DEBUG io.gatling.http.action.ws.fsm.WsPerformingCheckState - Current check success
11:37:13.692 [gatling-1-2] DEBUG io.gatling.http.action.ws.fsm.WsPerformingCheckState - Check sequences completed successfully
java.util.NoSuchElementException: No attribute named ‘ssss’ is defined

is there any solution to set a variable trru when i have a match

8

any help, please… !!

9

i found out a solution :

	def  repeatVerif(requestName:String, Duration:Int,LoopDuration:Int,ResMessage:String, partres:String, VariableVerif:String)=
	{
		asLongAsDuring("${stop"+VariableVerif+".isUndefined()}",LoopDuration.seconds) {
			exec(ws("SEND_ACK").sendText("""ACK""")
				.await(Duration.milliseconds)(
					ws.checkTextMessage(requestName).matching(bodyString.is(ResMessage))
						.check(jsonPath("$.method.name").is(partres).saveAs("stop"+VariableVerif))))
		}
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