Getting error while running the HAR file using CLI

[akshamat]

Describe the bug

I am getting below error so code is not able to convert into Locust python file
WARNING while searching for HAR files, skipping C:\HAR_File\demoblaze.com.har: 'charmap' codec can't decode byte 0x8d in position 219193: character maps to
2021-03-08 15:40:33,826 ERROR Please help us fix this error by reporting it! https://github.com/zalando-incubator/Transformer/issues

Transformer version
1.3.0

To Reproduce
Steps and input files to reproduce the behavior:

1. https://www.demoblaze.com/
2. Use Google Chrome to capture network traffic
3. Export the har file
4. I used following command transformer C:\HAR_File/ >locustfile.py on windows command prompt
5. 

Expected behavior
It should create locustfile.py successfully without any errors

Screenshots
If applicable, add screenshots to help explain your problem.

Desktop (please complete the following information):

• OS: Windows Command

Additional context
Add any other context about the problem here.

[thilp]

Hi, this looks like a duplicate of #72 (based on the first line of your error message, only partially visible in your screenshot). Unfortunately, this project currently doesn’t have the resources to support Windows as a first-class platform. Please try running Transformer inside Docker instead!

[JustinRoll]

Hey all,
I had a similar issue, and found that if you just pre-process the file and re-encode it in python, you can get it to run.

_f1Text = open('har/login.har', encoding='utf-8').read()
newText = f1Text.encode('charmap', errors='ignore').decode('charmap')
newOut = open('har/login_new.har', 'w', encoding = 'charmap')
newOut.write(newText)

#now run transformer on your har directory_

It could be nice to just detect if you're on windows and use a different encoding by default though.

[maormagori]

Hi, this looks like a duplicate of #72 (based on the first line of your error message, only partially visible in your screenshot). Unfortunately, this project currently doesn’t have the resources to support Windows as a first-class platform. Please try running Transformer inside Docker instead!

It wasn't mentioned anywhere that Windows isn't supported.
This should be acknowledged somewhere in the README.

[bascr]

I had the same issue and like @JustinRoll says the issue has to do with the file encoding. Modifying the line 315 in the scenario.py file like the image below I was able to get the resulting locust file:

It would be nice that the method 'dump' from the transformer class could receive the 'enconding' value as a parameter.

[thilp]

Thank you for your help! I have pre-released v1.3.1 with the suggested change, and will make it official (and upload it to pypi) when I have gathered the necessary approval from Zalando.

[thilp]

I have released v2.0.0 (major version bump because I also renamed the "blacklist" keyword argument) and also uploaded it to PyPI. Please let me know if a similar problem still occurs. 🙂