Gatling-Workshop!

goto: https://github.com/Nimrod007/Gatling-Workshop

##Servers: Gatling Workshop1 server: http://45.55.151.43

Gatling Workshop2 server: http://188.166.112.45

Create your own endpoint for testing:

http://45.55.151.43?new=YOUR-NAME

http://188.166.112.45?new=YOUR-NAME

##Gatling Download: https://repo1.maven.org/maven2/io/gatling/highcharts/gatling-charts-highcharts-bundle/2.1.4/gatling-charts-highcharts-bundle-2.1.4-bundle.zip

##Cheat Sheet:

Pause:

- Fixed pause duration:

pause(duration: Duration)

- Random pause duration:

pause(min: Duration, max: Duration)

- Example:

      .exec(http("get some page").get("/some.php")).pause(1 seconds, 10 seconds)

Wiki: http://gatling.io/docs/2.0.0-RC2/general/scenario.html

Checks:

- Default is checking for 200 status

- example of expecting 404

.exec(http("get some page").get("/some.php")).check(status.is(404))

- Multiple checks:

.check(status.not(400), status.not(404), status.not(500))

- Wiki:

http://gatling.io/docs/2.0.0-RC2/general/concepts.html

Scenario & Simulation

- Creating Scenario:

val user1 = scenario("gatling 1").exec(http("get some page").get("/some.php"))
val user2 = scenario("gatling 2").exec(http("get another page").get("/another.php"))

- Apply Scenario to a simulation

setUp(user1.inject(atOnceUsers(10)),
  user2.inject(atOnceUsers(25))).protocols(httpProtocol)

Wiki: http://gatling.io/docs/2.0.0-RC2/general/concepts.html

- Inject:

2 scenarios , first is running all users at once, seconds is ramping up users starting with 100 and going up to 500 in 1 minute.

setUp(scn.inject(atOnceUsers(10)), otherScn.inject(rampUsersPerSec(100) to(500) during(1 minutes) randomized))

Wiki: http://gatling.io/docs/2.0.0-RC2/general/simulation_setup.html#simulation-setup

Feeders:

- create a feeder:

val random = new util.Random
val feeder = Iterator.continually(Map("randomString" -> random.nextString(20)))

- use it in a scenario:

val scn = scenario("some scenario")
				.feed(feeder)
				.exec(http("some request")
				.post("/nimrod.php")
				.formParam("someParam", "${randomString}")

Wiki: http://gatling.io/docs/2.0.0-RC2/session/feeder.html#feeder

###Tweaks http://gatling.io/docs/2.0.0-RC2/general/operations.html

###Task 1:

download Gatling
unzip and go into /bin file
open the recorder.sh
before recording close all browser windows
set proxy to localhost:8000 (in your browser)
name the package and class
start recording
go to your endpoint (in the browser)
stop recording
exit the recorder
open the generated scala file in /user-files/simulations
change from 1 to 20 users.
run the gatling.sh & run your new scenario
view the report

###Task 2: To the current scenario add another GET request http://45.55.151.43/nimrod.php?error=1

Pause a random 1-5 seconds between the requests

This request return’s 500 response, add a check for status

Add another scenario, this time a user registers and login, the register is with a random generated email and password.

The previous scenario is running all users at once (we ran 20 last time), in the new we will ramp up users in a random amount given range and time, start with 1-5 users over 3 minutes.