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List:       jmeter-user
Subject:    Re: Test asynchronous things with MQTT
From:       Dmitri T <glinius () live ! com>
Date:       2024-01-26 13:39:09
Message-ID: PH7PR12MB7139381094A72C44849656B0C0792 () PH7PR12MB7139 ! namprd12 ! prod ! outlook ! com
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Aurélien FILEZ wrote:
> Hi Team,
>
> Algo, my JMeter with the MQTT plugin is that :
>
> image.png
>
> But the MQTT plugin page show that :
>
> image.png
>
> Why have I just the possibility to set a *.p12 certificate and not a 
> jks file ?
>
> Thank you team,
> Aurélien
>
> On Fri, Jan 26, 2024 at 12:19 PM Aurélien FILEZ 
> <aurelien.filez@gmail.com <mailto:aurelien.filez@gmail.com>> wrote:
>
>     Hello,
>
>     I'm working on an object connected company, and they ask me to
>     test the performance on the platform.
>
>     We have HTTP endpoints which says "202 accepted" and the result,
>     after the process, is to send an MQTT Message in the oneM2M format.
>
>     My goal is to check the average latency between an ordersent  by
>     the HTTP endpoint, and the MQTT message received.
>
>     I have a header sent to the HTTP query, and reinject in the MQTT
>     received message.
>
>     Is it possible to do something with JMeter to mesure that ? Have
>     you got some examples I can reuse ?
>
>     Thank you Team,
>     Aurélien
>
My approach for testing "asynchronous" stuff is the following:

 1. Trigger the async processing somehow using a suitable Sampler or
    Plugin <https://jmeter-plugins.org/>
 2. Add a While Controller
    <https://www.blazemeter.com/blog/while-controller-jmeter> after that
    Sampler and put a suitable condition to check if the asynchronous
    job is finished somehow
 3. Add a Sampler or Plugin under the While Controller to query the
    asynchronous job status
 4. Add a relevant Post-Processor
    <https://jmeter.apache.org/usermanual/component_reference.html#postprocessors>
    to extract the status and save it into a JMeter Variable which is
    used in While Controller's condition
 5. Put the whole logic under the Transaction Controller
    <https://jmeter.apache.org/usermanual/component_reference.html#Transaction_Controller>
    to measure end-to-end processing time

With regards to .jks truststore it's for overriding Java default 
truststore 
<https://www.baeldung.com/java-keystore-truststore-difference>, i.e. if 
you have custom certificate chain or authority which is not known to 
JDK. In the vast majority of cases the PKCS12 certificates storage 
should be sufficient, however I cannot comment on this as I don't know 
anything about your infrastructure.


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