active_storage_validations 2.0.0+ causing "stack level too deep"

[mooktakim]

This issue in production only. Caused a lot of problems, unable to download any files.
Downgraded to old version (1.4.0)

Was not detected locally or by tests.
Using digital ocean as the S3 provider.

> d = Document.last
> d.from_file.download
I, [2025-02-12T17:54:12.603450 #50]  INFO -- :   S3 Storage (215.3ms) Downloaded file from key: yd82c5wka2eq9a142ek1zmnqxzq9
(rapidrecruit):2:in `<top (required)>': stack level too deep (SystemStackError)
rapidrecruit(prod)> #<Thread:0x000076a29bf933f0 /rails/vendor/ruby/3.3.0/gems/scout_apm_logging-1.0.2/lib/scout_apm/logging/loggers/opentelemetry/sdk/logs/export/batch_log_record_processor.rb:184 run> terminated with exception (report_on_exception is true):
/rails/vendor/ruby/3.3.0/gems/uri-1.0.2/lib/uri/common.rb:155:in `new': stack level too deep (SystemStackError)
	from /rails/vendor/ruby/3.3.0/gems/uri-1.0.2/lib/uri/common.rb:155:in `for'
	from /rails/vendor/ruby/3.3.0/gems/uri-1.0.2/lib/uri/rfc3986_parser.rb:135:in `parse'
	from /rails/vendor/ruby/3.3.0/gems/uri-1.0.2/lib/uri/common.rb:208:in `parse'
	from /rails/vendor/ruby/3.3.0/gems/sentry-ruby-5.22.2/lib/sentry/net/http.rb:70:in `extract_request_info'
	from /rails/vendor/ruby/3.3.0/gems/sentry-ruby-5.22.2/lib/sentry/net/http.rb:38:in `block in request'
	from /rails/vendor/ruby/3.3.0/gems/sentry-ruby-5.22.2/lib/sentry/hub.rb:108:in `with_child_span'
	from /rails/vendor/ruby/3.3.0/gems/sentry-ruby-5.22.2/lib/sentry-ruby.rb:506:in `with_child_span'
	from /rails/vendor/ruby/3.3.0/gems/sentry-ruby-5.22.2/lib/sentry/net/http.rb:37:in `request'
	 ... 9349 levels...
	from /rails/vendor/ruby/3.3.0/gems/scout_apm_logging-1.0.2/lib/scout_apm/logging/loggers/opentelemetry/sdk/logs/export/batch_log_record_processor.rb:174:in `block in work'
	from <internal:kernel>:187:in `loop'
	from /rails/vendor/ruby/3.3.0/gems/scout_apm_logging-1.0.2/lib/scout_apm/logging/loggers/opentelemetry/sdk/logs/export/batch_log_record_processor.rb:165:in `work'
	from /rails/vendor/ruby/3.3.0/gems/scout_apm_logging-1.0.2/lib/scout_apm/logging/loggers/opentelemetry/sdk/logs/export/batch_log_record_processor.rb:184:in `block in reset_on_fork'

[Mth0158]

Hi @mooktakim,

That's a weird issue, downloading a file shouldn't trigger validations and so on?
You are using a from_file method which looks like a custom method, what does it do?
Do you have more trace to share?

[mooktakim]

Rails 7.2.2.

class Document < ApplicationRecord
  has_one_attached :from_file

  validates :from_file, attached: true, content_type: [ :pdf, :doc, :docx, :text ], size: { less_than: 10.megabytes, message: "is too large, max 10mb" }
end

I couldn't find where it was happening and why. We didn't make any changes that was related.
I discovered the issue by trying to upload a file. Initially thought the file was messed up, it didn't make sense why it wouldn't download. But later realised it wasn't just this file, error occurs with previously uploaded files.

The only thing I could do was step by step revert recent gem updates.
Unfortunately no trace other than what I posted above.

[mooktakim]

Btw it also broke image preview links