Debugging Gatling

Gatling (Open-Source)
1

Brand new to Gatling.
Using Gatling 3.3.1 on a Windows 10 64-bit machine with 32 GB of RAM

I used Google Chrome to build a .har file of an HTTPS, Okta-protected (SSO) web site.

My scenario only accesses the site and logs in. That’s it.

I successfully imported the .har file into the Google Recorder.

I edited the script only enough to run 30 users.

When I run gatling.bat script, Gatling successfully launches with no errors.

When I choose the new .scala file to run, I get quite a few errors like these:

---- Errors --------------------------------------------------------------------

request_8: Failed to build request: Resource /dealerpath/0008_ 29 (100.0%)
request.json not found

and

---- Errors --------------------------------------------------------------------

request_8: Failed to build request: Resource /dealerpath/0008_ 30 (47.62%)
request.json not found
request_20: Failed to build request: Resource /dealerpath/0020 21 (33.33%)
_request.json not found
status.find.in(200,201,202,203,204,205,206,207,208,209,304), f 12 (19.05%)
ound 403

and later

7:56:29.638 [ERROR] i.g.h.a.HttpRequestAction - ‘httpRequest-15’ failed to execute: Resource /dealerpath/0077_request.txt not found
17:56:29.810 [ERROR] i.g.h.a.HttpRequestAction - ‘httpRequest-15’ failed to execute: Resource /dealerpath/0077_request.txt not found
17:56:29.810 [ERROR] i.g.h.a.HttpRequestAction - ‘httpRequest-15’ failed to execute: Resource /dealerpath/0077_request.txt not found
17:56:29.950 [ERROR] i.g.h.a.HttpRequestAction - ‘httpRequest-15’ failed to execute: Resource /dealerpath/0077_request.txt not found
17:56:29.950 [ERROR] i.g.h.a.HttpRequestAction - ‘httpRequest-15’ failed to execute: Resource /dealerpath/0077_request.txt not found
17:56:30.153 [ERROR] i.g.h.a.HttpRequestAction - ‘httpRequest-15’ failed to execute: Resource /dealerpath/0077_request.txt not found
17:56:30.263 [ERROR] i.g.h.a.HttpRequestAction - ‘httpRequest-15’ failed to execute: Resource /dealerpath/0077_request.txt not found
17:56:30.403 [ERROR] i.g.h.a.HttpRequestAction - ‘httpRequest-15’ failed to execute: Resource /dealerpath/0077_request.txt not found
17:56:30.528 [ERROR] i.g.h.a.HttpRequestAction - ‘httpRequest-15’ failed to execute: Resource /dealerpath/0077_request.txt not found
17:56:30.841 [ERROR] i.g.h.a.HttpRequestAction - ‘httpRequest-15’ failed to execute: Resource /dealerpath/0077_request.txt not found
17:56:30.872 [ERROR] i.g.h.a.HttpRequestAction - ‘httpRequest-15’ failed to execute: Resource /dealerpath/0077_request.txt not found
17:56:31.075 [ERROR] i.g.h.a.HttpRequestAction - ‘httpRequest-15’ failed to execute: Resource /dealerpath/0077_request.txt not found
---- Errors --------------------------------------------------------------------

request_8: Failed to build request: Resource /dealerpath/0008_ 30 (29.41%)
request.json not found
request_20: Failed to build request: Resource /dealerpath/0020 30 (29.41%)
_request.json not found
status.find.in(200,201,202,203,204,205,206,207,208,209,304), f 30 (29.41%)
ound 403
request_77: Failed to build request: Resource /dealerpath/0077 12 (11.76%)
_request.txt not found

The gatling.bat runs to the end, and a report is generated.

However, I checked the application activity using an APM tool (AppDynamics) and there is no sighn that I was ever vorn

How can I debut Gatling?

Is there documentation on these kinds of errors?

Thanks,
Randy

2

Did you manually delete those files?
Can you provide the HAR file so we can reproduce the file generation on our side and check if there’s a bug there?

3

Hi Stéphane -

Thank you for responding. You guys are awesome.

Anyway, I did not delete the files, and found all of them at C:\Gatling\user-files\resources\dealerpath:

DealerPathResources.jpg
DealerPathResources.jpg975×529 73.7 KB

I am attaching the HAR file and a couple of the “unfound” files as well.

I apologize for not having a better comprehension of what I need to do to get a working Gatling script. I hope that I can not only learn how to use the tool, but, eventually, be able to teach others. Our Product/Delivery Teams are quite reluctant to take on the learning curve of learning a new tool.

Thanks,
Randy

dealerpathcert85_deere_com02211430.zip (921 KB)

0008_request.zip (227 Bytes)

0072_request.zip (2.69 KB)

4

Sorry but I can’t reproduce your missing request body files issue with this sample.
All 5 bodies are properly generated and resolved from the simulation.

DealerPathResources.jpg
DealerPathResources.jpg975×529 73.7 KB

5

Thanks for your analysis.

So, does this mean I just cannot use Gatling for this site?

6

No. I’m saying I can’t reproduce your problem and the Simulation I generate from the HAR file you provided works just fine for me and properly locates the request body files. Just that I can’t resolve your hostname which is an internal one.

7

Oh, I apologize. I misunderstood.

if you were I, how would proceed to debug the issue I am seeing? Is this something that I would know if I had a better understanding of Scala?

Randy