chain and loop

[Henri Gomez]

For my tests I like to add a loop around all chain execs :

Recorder produce :


val chain_0 = chain
.exec(
http("request_1")
.get(extWebapp + "/libs-release/com/me/parent/parent/3/parent-3.pom")
.headers(headers_1)
)
.exec(
http("request_2")
.get(extWebapp + "/libs-release/com/me/parent/parent/3/parent-3.pom.sha1")
.headers(headers_1)
)
.pause(extPause, MILLISECONDS)
.exec(
http("request_3")
.get(extWebapp + "/libs-release/com/me/web/1.0.0-12/web-1.0.0-12.pom")
.headers(headers_1)
)

...

and then


val scn = scenario("me-mvn-clean")
.insertChain(chain_0)
.insertChain(chain_1)

What's the normal way to add loop around chains ?

Thanks.

PS: Still Scala noob on board :)

[Stéphane Landelle]

Tss tss, you'd better read the doc... 

https://github.com/excilys/gatling/wiki/Scenario-Components#wiki-loop

2012/9/5 Henri Gomez <henri...@gmail.com>

[Henri Gomez]

I read this doc, just wonder how to add loop in scala in construct :(

val chain_0 = chain(...)

-->

val chain_0 = loop (chain(...)).times(20)

or

val scn = scenario("me-mvn-clean")
.insertChain(chain_0)
.insertChain(chain_1)

--->

val scn = scenario("me-mvn-clean")

.insertChain(loop(chain_0).times(20))
.insertChain(loop(chain_1).times(20))

Remember, Scala noob on board :)

[Stéphane Landelle]

Actually, that's not Scala, that's our DSL (which is written in Scala, but here, you're just doing method chaining like you would with a Java or Groovy DSL).

Our DSL has 2 entry points: scenario and chain, so you can't call loop from scratch.

So you can write:

• val chain_0 = chain.loop(anotherChain).times(20)

• val scn = scenario("me-mvn-clean")
  

•                         .loop(chain_0).times(20)
                          .loop(chain_1).times(20)

Hope it help.

2012/9/5 Henri Gomez <henri...@gmail.com>

[Henri Gomez]

> Actually, that's not Scala, that's our DSL (which is written in Scala, but
> here, you're just doing method chaining like you would with a Java or Groovy
> DSL).

Ok, it's still a bit unclear where end DSL and where start Scala.

> Our DSL has 2 entry points: scenario and chain, so you can't call loop from
> scratch.
>
> So you can write:
>
> val chain_0 = chain.loop(anotherChain).times(20)
> val scn = scenario("me-mvn-clean")
> .loop(chain_0).times(20)
> .loop(chain_1).times(20)
>
> Hope it help.

Perfect.

Thanks

[Stéphane Landelle]

Don't fear, you'll be fine ;)

2012/9/5 Henri Gomez <henri...@gmail.com>

[Henri Gomez]

> Don't fear, you'll be fine ;)

Thanks

How could I apply loop to whole scenario ?

[Stéphane Landelle]

I've just deprecated some instructions in the DSL, so my response would depend on the version you use.

1.2.5 or 1.3.0-SNAPSHOT?

2012/9/6 Henri Gomez <henri...@gmail.com>

[Henri Gomez]

> I've just deprecated some instructions in the DSL, so my response would
> depend on the version you use.
> 1.2.5 or 1.3.0-SNAPSHOT?

1.2.5, I'll wait 1.3.0 release to switch

[Stéphane Landelle]

OK, so in 1.2.5, you have insert a loop in your scenario and pass it a chain. Things will be more simple in 1.3.0.

So if you have:

val scn = scenario("foo")

  .insertChain(chain1)

  .insertChain(chain1)

you can write:

val scn = scenario("foo")

  .loop(

      chain

      .insertChain(chain1)

      .insertChain(chain1)

  ).times(100) // or during(10, TimeUnit.MINUTE) for example

2012/9/6 Henri Gomez <henri...@gmail.com>

[Henri Gomez]

Good

Thanks !

2012/9/6 Stéphane Landelle <slan...@excilys.com>:

[Henri Gomez]

By curiosity, how will it turn in 1.3.0 ?

2012/9/6 Henri Gomez <henri...@gmail.com>:

[Stéphane Landelle]

In about 2 weeks I hope.

2012/9/6 Henri Gomez <henri...@gmail.com>

[Henri Gomez]

> In about 2 weeks I hope.

Good :-)

Question was, how did this code (loop for scenario) would be in 1.3.0 ;-)

[Stéphane Landelle]

Current loop DSL will be here in 1.3.0, but issue deprecation warnings, and will be removed in 1.4.0.

The new way of writing loops will be:

val scn = scenario("foo")

  .repeat(100) { // or during(10 minutes)

    chain1

   .insertChain(chain2) 

}

I realize we might have a better name for "insertChain" like "chainWith".

2012/9/6 Henri Gomez <henri...@gmail.com>

[Ak Aurélien]

Hi,
I have a problem with this syntax, I wrote : 

repeat(15){home.insertChain(rollover)},processcmd

/* home, rollover and processcmd are 3 chains */

And gatling says : value insertChain is not a member of io.gatling.core.structure.ChainBuilder

:( :(

[Stéphane Landelle]

This thread is more than 1 year old, syntax has changed since.

use exec

2013/12/19 Ak Aurélien <a...@kempiak.fr>

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[Ak Aurélien]

My entire code is there :

        val scn = scenario("myscenar").exec(

                      repeat(15){chain.insertChain(home).insertChain(rollover)},processcmd

      )

Where am I wrong ?

[Stéphane Landelle]

As I said: home.exec(rollover).exec(processcmd)

2013/12/19 Ak Aurélien <a...@kempiak.fr>

--

[Ak Aurélien]

Ok, thank you for your help.

Le mercredi 5 septembre 2012 10:50:04 UTC+2, Henri Gomez a écrit :