Error when validating mapping result: jsonref fails on dereferencing common_properties_json_schema_cct1

On Windows 10 with Python 3.8.5 I installed hmc_schemas with pip. Now I want to validate one of our mapping results with schema_util.py:

from pathlib import Path
import json
from hmc_schemas import validate_with

results_folder = Path("D:/WS_HMC/mapping_results/hubs_dumps/hub_ast/metadata_standards")
result_file = results_folder / "NetCDF.json"
with open(result_file, 'r', encoding='utf-8') as fileo:
        result = json.load(fileo)

validate_with(result, 'metadata_standard')

This schema hmc_metadata_standard_1_0_0.json references common_properties_json_schema_cct1.json which unfortunately cannot be acquired on my system:

AttributeError: 'JsonRef' object has no attribute 'cache'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\Users\sasquatch\AppData\Local\Programs\Python\Python38\lib\urllib\request.py", line 1507, in open_local_file
    stats = os.stat(localfile)
FileNotFoundError: [WinError 2] Das System kann die angegebene Datei nicht finden: '\\common_properties_json_schema_cct1.json'

...

jsonref.JsonRefError: URLError: <urlopen error [WinError 2] Das System kann die angegebene Datei nicht finden: '\\common_properties_json_schema_cct1.json'>

I tracked the error down to line 114 in schema_util.py where JsonRef.replace_refs is called. And why is schemafile_common in line 110 read but never used?

I am not familiar with JSON programming in Python, what am I doing wrong for this simple validation?

added 2h of time spent

changed due date to February 24, 2022

Thanks a lot for adding a Windows perspective! Just double-checked that validate_with works as expected on Ubuntu 20.04.4 with Python 3.8.10. I'll see with @p.videgain.barranco how we can fix JsonRef.replace_refs() for Windows paths (maybe in the direction of https://github.com/Julian/jsonschema/issues/98#issuecomment-105475109)

Hi @michikommader, we just merged a Windows fix into master (successfully tested on Windows 10 with Python 3.8.10). Could you update your repo and confirm?

Kind regards, Annika

special thanks to @a.pirogov

I can confirm that the issue is fixed for me on Windows 10. Validation works as expected. Thanks a lot! :)

closed