Running an arbitrary number of requests sequentially (3.7.6)

Gatling (Open-Source)
1

Hi all!

I’m using Gatling as a integration tool in a small Java program. The program take an arbitrary number of files where the request and checks are defined, it creates the appropriate scenarios and groups them in a single PopulationBuilder class.
Everything works fine, but every request is done at once, and I really need to make each request sequentially.

There is ChainBuilder:

ChainBuilder request1 = request1.exec(...);
ChainBuilder request2 = request2.exec(...);
ScenarioBuilder scn = scenario("myscenario").exec(request1, request2);

And .andThen():

populationBuilder.add(scn1.injectClosed(...).andThen(scn2.injectClosed(...).andThen(scn3.injectClosed(...));

However, I couldn’t get the desired effect. It seems the andThen threats every first ocurrence as the parent and the others as children at the same hierarchy level. The ChainBuilder I don’t know how I can put hundreds of scenarios there.
With a small number of requests it can work fine, but I need to work with several thousands. I’m using as a single setUp because it generates the aggregated report of all requests that is quite useful.

Anyone had a similar implementation or has a an idea how to put this together?
Cheers!

2

Gatling is not meant for putting hundreds of scenarios together. You should only have a few. No idea what you’re doing but you should try to merge most of your scenarios together.

3

Thanks for your response.
Cheers!

4

Hi… you can try using Seq() like below if you have few scenarios to execute sequentially:

scenario(“Single scenario for sequential execution of APIs”)
.exec(
Seq(
exec(
testScenario1
)
.exec(
testScenario2
)
)
)

In above code block, testScenario2 will be executed after testScenario1.