Stack level too deep in docker container

[Tall-Paul]

Using this command:

docker run -v 'c:/Users/blah/Desktop/openapi.json:/home/openapi.json' -p 8081:8080 realfengjia/fakeit:latest --spec /home/openapi.json

getting this stack trace:

/usr/local/bundle/gems/openapi_parser-0.3.0/lib/openapi_parser/concerns/findable.rb:31:in each': stack level too deep (SystemStackError) from /usr/local/bundle/gems/openapi_parser-0.3.0/lib/openapi_parser/concerns/findable.rb:31:in purge_object_cache'
from /usr/local/bundle/gems/openapi_parser-0.3.0/lib/openapi_parser/concerns/findable.rb:31:in each' from /usr/local/bundle/gems/openapi_parser-0.3.0/lib/openapi_parser/concerns/findable.rb:31:in purge_object_cache'
from /usr/local/bundle/gems/openapi_parser-0.3.0/lib/openapi_parser/concerns/findable.rb:31:in each' from /usr/local/bundle/gems/openapi_parser-0.3.0/lib/openapi_parser/concerns/findable.rb:31:in purge_object_cache'
from /usr/local/bundle/gems/openapi_parser-0.3.0/lib/openapi_parser/concerns/findable.rb:31:in each' from /usr/local/bundle/gems/openapi_parser-0.3.0/lib/openapi_parser/concerns/findable.rb:31:in purge_object_cache'
from /usr/local/bundle/gems/openapi_parser-0.3.0/lib/openapi_parser/concerns/findable.rb:31:in each' ... 11756 levels... from /usr/local/bundle/gems/fakeit-0.1.3/lib/fakeit.rb:14:in build'
from /usr/local/bundle/gems/fakeit-0.1.3/bin/fakeit:44:in <top (required)>' from /usr/local/bundle/bin/fakeit:23:in load'
from /usr/local/bundle/bin/fakeit:23:in `

'

[JustinFeng]

Hi @Tall-Paul, thank you for your feedback

From the stack trace, looks like it's a runtime error raised from openapi_parser when it tries to purge cached json schema object cache. Potentially could be caused by

• bad recursion code in openapi_parser gem, or
• recursive ref in the specification, or
• deep ref stack limited by docker image `stack size setting (less likely as the same method has been called 11756 times recursively)

Would you mind provide a specification file (remove any sensitive information), so that I can reproduce the issue and confirm the root cause locally

[JustinFeng]

I got the same stack trace with recursive ref in specification file, like this

  "components": {
    "schemas": {
      "get_response": {
        "type": "object",
        "properties": {
          "data": {
            "$ref": "#/components/schemas/reccur"
          }
        }
      },
      "reccur": {
        "type": "object",
        "properties": {
          "data1": {
            "$ref": "#/components/schemas/sive"
          }
        }
      },
      "sive": {
        "type": "object",
        "properties": {
          "data2": {
            "$ref": "#/components/schemas/reccur"
          }
        }
      }
    }
  }

Created an issue in https://github.com/ota42y/openapi_parser

[JustinFeng]

FYI, even the parser issue is fixed, random example generation may face the same infinite recursive issue, suggestion will be providing the example property for recursive schema part and specify --use-example option when you run fakeit command

[Tall-Paul]

Hi Justin, good catch, it was indeed a recursive reference in the definition! Thanks for your help, I've amended our definition to remove the recursive references which got me past this issue. I'm now getting another problem, but I'll open another issue for that.

[JustinFeng]

Created a monkey patch to fix the recursive schema reference before it get solved in openapi_parser