Errors shown on RefResolutionError are unclear about check-jsonschema HOT 4 CLOSED

Thanks for the info; this lets me see the same error.
I also confirmed that this is an issue specific to the schemastore prometheus schema. I was able to create a scenario analogous to yours in which a ref to a known-valid schemastore schema (the github workflows one) works correctly.

I'm 99% certain at this point that it's just the fact that the prometheus schema has a bad $id field.
I'll use this scenario to work on improving the error reporting in check-jsonschema and then file an upstream issue.

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I've just pushed a commit to main which makes the error in this case clearer, as it traverses and prints some of the most relevant info from chained exceptions on ref resolution errors.

Example output:

$ check-jsonschema --schemafile schema.json values.yaml
Failure resolving $ref within schema

RefResolutionError: HTTP Error 404: Not Found
  in "/home/sirosen/projects/check-jsonschema/src/check_jsonschema/checker.py", line 99
  >>> errors = self._build_error_map(validator, instances)

  caused by

  HTTPError: HTTP Error 404: Not Found
    in "/home/sirosen/projects/check-jsonschema/.venv/lib/python3.8/site-packages/jsonschema/validators.py", line 777
    >>> document = self.resolve_remote(url)

    caused by

    KeyError: 'https://json.schemastore.org/prometheus.rules'
      in "/home/sirosen/projects/check-jsonschema/.venv/lib/python3.8/site-packages/jsonschema/validators.py", line 774
      >>> document = self.store[url]

I also confirmed that the sample content passes the prometheus schema if it is corrected to have an accurate $id.

I'm retitling the issue, as there is no relevant bug in check-jsonschema or the underlying jsonschema library.

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I've opened an issue upstream, SchemaStore/schemastore#1928

With that and improved error handling in place within check-jsonschema, there's nothing more to be done here. I'm closing; tracking can continue on the upstream issue.

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Thanks @sirosen!

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