Most static tests fail when a date-like string is provided as an example value in a job spec YAML

Start with apps/render_cf.py and apps/api/src/hyp3_api/api-spec/job_parameters.yml.j2, where api_schema is passed to json.dumps; inspect how job spec YAML is parsed and how the rendering step handles date-like scalar values. Reproduce with the shown start_date example in job_spec/NISAR_CV.yml and run the render or static test command from the issue. Done when the example renders successfully and the static checks pass.

When updating the NISAR_CV.yml file to accept strings formatted as dates in YYYY-MM-DD format, including an example date 2026-06-24 resulted in most of the static tests failing with the error: TypeError: Object of type date is not JSON serializable.

Failing parameter definition:

parameters:
  start_date:
    api_schema:
      description: Start date of CV calculation in YYYY-MM-DD format
        type: string
        pattern: "[0-9]{4}-[0-1][0-9]-[0-3][0-9]"
        example: 2026-06-24 

Result:

Run make security_environment=ASF cfn-lint
rendering job_spec/AK_FIRE_SAFE.yml job_spec/ARIA_AUTORIFT.yml job_spec/ARIA_RAIDER.yml job_spec/ARIA_S1_COSEIS.yml job_spec/ARIA_S1_GUNW.yml job_spec/ARTRAFF_RTC.yml job_spec/AUTORIFT.yml job_spec/FIRE_TRACK.yml job_spec/GLACIER_MELT.yml job_spec/INSAR_GAMMA.yml job_spec/INSAR_ISCE.yml job_spec/INSAR_ISCE_BURST.yml job_spec/INSAR_ISCE_BURST_EC2.yml job_spec/INSAR_ISCE_BURST_SPOT.yml job_spec/INSAR_ISCE_MULTI_BURST.yml job_spec/ITS_LIVE_AUTORIFT.yml job_spec/ITS_LIVE_CROP.yml job_spec/ITS_LIVE_CROP_BULK.yml job_spec/ITS_LIVE_META_BULK.yml job_spec/NISAR_CV.yml job_spec/NISAR_GUNW.yml job_spec/OPERA_DISP_TMS.yml job_spec/OPERA_DIST_S1.yml job_spec/OPERA_DIST_S1_CONFIRMATION.yml job_spec/PISM_EXECUTE.yml job_spec/PISM_GLACIER_RUN.yml job_spec/PISM_ISMIP7_GREENLAND_RUN.yml job_spec/RTC_GAMMA.yml job_spec/SLIMSAR_TDBP.yml job_spec/SRG_GSLC.yml job_spec/SRG_TIME_SERIES.yml job_spec/SRG_TS.yml job_spec/VOLCSARVATORY_MINTPY.yml job_spec/VOLCSARVATORY_MULTI_BURST.yml job_spec/WATER_MAP.yml job_spec/WATER_MAP_EQ.yml for API local and security environment ASF
/opt/hostedtoolcache/Python/3.13.18/x64/lib/python3.13/site-packages/vcs_versioning/_backends/_git.py:709: UserWarning: "/home/runner/work/hyp3/hyp3" is shallow and may cause errors
  pre_parse(wd)
Traceback (most recent call last):
  File "/home/runner/work/hyp3/hyp3/apps/render_cf.py", line 342, in <module>
    main()
    ~~~~^^
  File "/home/runner/work/hyp3/hyp3/apps/render_cf.py", line 330, in main
    render_templates(
    ~~~~~~~~~~~~~~~~^
        job_types,
        ^^^^^^^^^^
    ...<5 lines>...
        args.same_account_publishing,
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    )
    ^
  File "/home/runner/work/hyp3/hyp3/apps/render_cf.py", line 174, in render_templates
    output = template.render(
        job_types=job_types,
    ...<8 lines>...
        job_states=job_states,
    )
  File "/opt/hostedtoolcache/Python/3.13.18/x64/lib/python3.13/site-packages/jinja2/environment.py", line 1295, in render
    self.environment.handle_exception()
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^
  File "/opt/hostedtoolcache/Python/3.13.18/x64/lib/python3.13/site-packages/jinja2/environment.py", line 942, in handle_exception
    raise rewrite_traceback_stack(source=source)
  File "apps/api/src/hyp3_api/api-spec/job_parameters.yml.j2", line 40, in top-level template code
    {{ json.dumps(parameter_spec['api_schema']) }}
    ^^^^^^^^^^^^^^^
  File "/opt/hostedtoolcache/Python/3.13.18/x64/lib/python3.13/json/__init__.py", line 235, in dumps
    return _default_encoder.encode(obj)
           ~~~~~~~~~~~~~~~~~~~~~~~^^^^^
  File "/opt/hostedtoolcache/Python/3.13.18/x64/lib/python3.13/json/encoder.py", line 202, in encode
    chunks = self.iterencode(o, _one_shot=True)
  File "/opt/hostedtoolcache/Python/3.13.18/x64/lib/python3.13/json/encoder.py", line 263, in iterencode
    return _iterencode(o, 0)
  File "/opt/hostedtoolcache/Python/3.13.18/x64/lib/python3.13/json/encoder.py", line 182, in default
    raise TypeError(f'Object of type {o.__class__.__name__} '
                    f'is not JSON serializable')
TypeError: Object of type date is not JSON serializable
make: *** [Makefile:54: render] Error 1
Error: Process completed with exit code 2.

Commenting out the example date field allowed the code to pass the failing tests.

passing parameter definition:

  parameters:
    start_date:
      api_schema:
        description: Start date of CV calculation in YYYY-MM-DD format
        type: string
        pattern: "[0-9]{4}-[0-1][0-9]-[0-3][0-9]"
        #example: 2026-06-24

result:

Run make security_environment=ASF cfn-lint
rendering job_spec/AK_FIRE_SAFE.yml job_spec/ARIA_AUTORIFT.yml job_spec/ARIA_RAIDER.yml job_spec/ARIA_S1_COSEIS.yml job_spec/ARIA_S1_GUNW.yml job_spec/ARTRAFF_RTC.yml job_spec/AUTORIFT.yml job_spec/FIRE_TRACK.yml job_spec/GLACIER_MELT.yml job_spec/INSAR_GAMMA.yml job_spec/INSAR_ISCE.yml job_spec/INSAR_ISCE_BURST.yml job_spec/INSAR_ISCE_BURST_EC2.yml job_spec/INSAR_ISCE_BURST_SPOT.yml job_spec/INSAR_ISCE_MULTI_BURST.yml job_spec/ITS_LIVE_AUTORIFT.yml job_spec/ITS_LIVE_CROP.yml job_spec/ITS_LIVE_CROP_BULK.yml job_spec/ITS_LIVE_META_BULK.yml job_spec/NISAR_CV.yml job_spec/NISAR_GUNW.yml job_spec/OPERA_DISP_TMS.yml job_spec/OPERA_DIST_S1.yml job_spec/OPERA_DIST_S1_CONFIRMATION.yml job_spec/PISM_EXECUTE.yml job_spec/PISM_GLACIER_RUN.yml job_spec/PISM_ISMIP7_GREENLAND_RUN.yml job_spec/RTC_GAMMA.yml job_spec/SLIMSAR_TDBP.yml job_spec/SRG_GSLC.yml job_spec/SRG_TIME_SERIES.yml job_spec/SRG_TS.yml job_spec/VOLCSARVATORY_MINTPY.yml job_spec/VOLCSARVATORY_MULTI_BURST.yml job_spec/WATER_MAP.yml job_spec/WATER_MAP_EQ.yml for API local and security environment ASF
/opt/hostedtoolcache/Python/3.13.18/x64/lib/python3.13/site-packages/vcs_versioning/_backends/_git.py:709: UserWarning: "/home/runner/work/hyp3/hyp3" is shallow and may cause errors
  pre_parse(wd)
cfn-lint --info --ignore-checks W3002 E3008 --template `find . -name *-cf.yml`
2026-11-06 15:18:41,630 - cfnlint.runner.template.runner - INFO - Run scan of template apps/api/api-cf.yml
2026-11-06 15:18:41,718 - cfnlint.runner.template.runner - INFO - Run scan of template apps/check-processing-time/check-processing-time-cf.yml
2026-11-06 15:18:41,747 - cfnlint.runner.template.runner - INFO - Run scan of template apps/compute-cf.yml
2026-11-06 15:18:41,859 - cfnlint.runner.template.runner - INFO - Run scan of template apps/disable-private-dns/disable-private-dns-cf.yml
2026-11-06 15:18:41,900 - cfnlint.runner.template.runner - INFO - Run scan of template apps/get-files/get-files-cf.yml
2026-11-06 15:18:41,933 - cfnlint.runner.template.runner - INFO - Run scan of template apps/handle-batch-event/handle-batch-event-cf.yml
2026-11-06 15:18:42,014 - cfnlint.runner.template.runner - INFO - Run scan of template apps/main-cf.yml
2026-11-06 15:18:42,240 - cfnlint.runner.template.runner - INFO - Run scan of template apps/monitoring-cf.yml
2026-11-06 15:18:42,260 - cfnlint.runner.template.runner - INFO - Run scan of template apps/scale-cluster/scale-cluster-cf.yml
2026-11-06 15:18:42,434 - cfnlint.runner.template.runner - INFO - Run scan of template apps/search-archive/search-archive-cf.yml
2026-11-06 15:18:42,467 - cfnlint.runner.template.runner - INFO - Run scan of template apps/set-batch-overrides/set-batch-overrides-cf.yml
2026-11-06 15:18:42,494 - cfnlint.runner.template.runner - INFO - Run scan of template apps/start-execution/start-execution-cf.yml
2026-11-06 15:18:42,534 - cfnlint.runner.template.runner - INFO - Run scan of template apps/update-db/update-db-cf.yml
2026-11-06 15:18:42,564 - cfnlint.runner.template.runner - INFO - Run scan of template apps/upload-log/upload-log-cf.yml
2026-11-06 15:18:42,623 - cfnlint.runner.template.runner - INFO - Run scan of template apps/workflow-cf.yml
2026-11-06 15:18:43,015 - cfnlint.runner.template.runner - INFO - Run scan of template cicd-stacks/ASF-deployment-ci-cf.yml
2026-11-06 15:18:43,075 - cfnlint.runner.template.runner - INFO - Run scan of template cicd-stacks/EDC-deployment-ci-cf.yml
2026-11-06 15:18:43,107 - cfnlint.runner.template.runner - INFO - Run scan of template cicd-stacks/JPL-deployment-policy-cf.yml

The issue appears to be the JSON file parsing in render_cf.py