ConnectionError with viktor Storage

🚀 Support (Q&A)
1

There seems to be an issue with viktor Storage. I get a connection error that it could not connect to the url… viktor_storage…

It seems to only be the case in my development environment.

Any ideas on how to fix, or is the also happening to other developers?

Thanks

2

This seems to have sorted itself out, and was possibly an issue caused by restarting the browser due to an update.

3

This is not resolved.
A colleage has had this issue now on a released version.

the error stack trace is as follows:

  File "viktor/core.pyx", line 1051, in viktor.core.File.getvalue
  File "viktor/core.pyx", line 1036, in viktor.core.File.open
  File "viktor/core.pyx", line 871, in viktor.core._URLFileManager.create_text_file
  File "viktor/core.pyx", line 713, in viktor.core._TextURLFile.__init__
  File "viktor/core.pyx", line 710, in viktor.core._TextURLFile.__init__
  File "viktor/core.pyx", line 611, in viktor.core._ResponseStream.__init__
  File "viktor/core.pyx", line 625, in viktor.core._ResponseStream._create_iterator
ConnectionError: Could not connect to url 'https://viktor-storage-eu1.s3.amazonaws.com/storage/vwi/fc0c56da-04d5-4abc-bf0d-20374ebc4e53?response-content-disposition=attachment%3B%20filename%3D%2207_dkmp32_7%252B70kr.000.gef%22&X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=AKIAZWJWJ6TMJGMQGN5X%2F20241120%2Feu-central-1%2Fs3%2Faws4_request&X-Amz-Date=20241120T131504Z&X-Amz-Expires=300&X-Amz-SignedHeaders=host&X-Amz-Signature=b64a0bc29cdff8c481620a885d8079da3435156ea7b745f0c09125ab1cf8b219'.

It also seems to happen when trying to run 6 files. it is fine with 1 to 5, but by 6 it breaks.

can anyone shed some light?

4

@guido.bongers
@Johan

Guido and Johan will be taking over this request in my absence

5

Hi!

In the meantime I’ve spoken with @NBouwman but for the record, I’ll post here as well:

  • We’ve seen quite some cases where the mechanism is actually that the Storage.set() fails (silently), and that only becomes evident during the .get() because the link is not pointing to a succesfully stored file.
  • We are tracking an issue internally to improve the error message when a .set fails
  • It might be a good low-hanging-fruit approach to split actions that might be performed lazily over multiple lines i.e. instead of Storage.set('key1', data=vkt.File.from_data(json_file.getvalue()) do this over two lines.