{{tag>Brouillon Perf Web Scala}}

= Notes tests de charge HTTP avec Gatling



Voir aussi :
* [[Jmeter - notes|Apache JMeter]]
* [[https://www.it-connect.fr/serveur-web-tests-de-charge-en-python-avec-locust/|Serveur Web : tests de charge en Python avec Locust ]]

== Install IDE pour dev

Voir : 
* https://gatling.io/open-source/gatling-demo/video-demo/?submissionGuid=efc5d076-c18a-46ae-b1ca-4669580bfd05
* https://www.youtube.com/watch?v=5MYuQBQZ8Ys
* https://github.com/gatling/gatling-tutorial
* [[http://www.jpsymfony.com/outils/utilisation-de-gatling|Introduction à Gatling et Scala (obsolète mais intéressant)]]
* https://www.james-willett.com/gatling-load-testing-complete-guide/

Install IDE Scala et tous le reste (pas nécessaire)
<code bash>
apt install python-pip python3-pip snapd
apt-get install openjdk-11-jdk maven
wget https://downloads.lightbend.com/scala/2.12.2/scala-2.12.2.deb
dpkg -i scala-2.12.2.deb

snap install intellij-idea-community --classic
</code>

Lancement IDE
<code bash>
/snap/bin/intellij-idea-community
</code>


== getling recorder

<code bash>
./gatling-charts-highcharts-bundle-3.6.0/bin/recorder.sh
</code>


== Lancement

''simulation/plop/test1.scala''
<code scala>
package plop.hpplop.simulation.mainProfile

import scala.concurrent.duration._

import io.gatling.core.Predef._
import io.gatling.http.Predef._
import io.gatling.jdbc.Predef._

class ChargeHPO extends Simulation {
    val durationTime = scala.util.Properties.envOrElse("DURATION", "3" )
    val minUsers = scala.util.Properties.envOrElse("MINUSER", "2")
    val maxUsers = scala.util.Properties.envOrElse("MAXUSER", "3")
    val baseUrl = scala.util.Properties.envOrElse("BASEURL", "")
    println(baseUrl.toString)

    val httpProtocol = http.baseUrl(baseUrl.toString)

    val headers_hpo = Map(
        "Host" -> "acme.fr",
    )

    val scn = scenario("HP Plop")
        .exec(http("Root")
        .get("/")
        .disableFollowRedirect
        .check(status is (301))
        .headers(headers_hpo)
    )

    setUp(
        scn.inject(
            nothingFor(10 seconds),
            rampUsersPerSec(minUsers.toInt) to maxUsers.toInt during (durationTime.toInt minutes)
        ).protocols(httpProtocol)
    )
}
</code>

<code bash>
env BASEURL=http://acme.fr ~/code/http/gatling-charts-highcharts-bundle-3.6.0/bin/gatling.sh -sf simulations/plop/ -rd "Test1 "
</code>


== Pb

Erreur avec l'IDE

<code ->
gatling-tutorial/src/test/scala/Engine.scala
object gatling is not a member of package io
import io.gatling.app.Gatling
</code>

== Notes Scala

Voir aussi : Kotlin