SNOW-2912540: decouple LocalTestOOBTelemetryService from connector.telemetry_oob

[sfc-gh-fpawlowski]

The UD's telemetry_oob.TelemetryService is a no-op stub (BD#45) that is missing batch_size, which LocalTestOOBTelemetryService.add() uses — causing an AttributeError at runtime.

Makes LocalTestOOBTelemetryService fully standalone by:

• Removing from snowflake.connector.telemetry_oob import TelemetryService and the inheritance
• Adding its own double-checked-lock singleton (get_instance())
• Initialising self.queue, self.batch_size, and self._enabled directly in __init__
• Adding close() (delegates to flush(), called by atexit)
• Fixing the pre-existing self._enable typo (should have been _enabled)

SecretDetector (also from the connector) is now decoupled too — moved into mock/_secret_detector.py as a literal copy of the Universal Driver's _common/secret_detector.py (the shim added in drivers#598 purely to satisfy this one Snowpark import; SecretDetector was never a real UD capability). Only the backward-compatibility-specific mechanism was removed (@backward_compatibility, install_backward_compatibility_getattr), since that has no equivalent in Snowpark — everything else (the class, MaskedMessageData, the 3-tuple return, logging.Formatter integration, masked_text = str(ex) on failure) is unchanged from the UD source, including a known real finding already flagged by the security bot on drivers#598 that isn't fixed as part of this move.

Note that OOB telemetry is disabled on the backend anyway, so this masking is defense-in-depth on the outbound payload, not a response to active exploitation — but export_queue_to_string() still feeds a real requests.Session().post() to a live analytics endpoint, so it's not a safe no-op either. If full secret-masking becomes a real requirement for the Universal Driver itself later, the right fix is a DependencyRequest to implement it once in sf_core, not to re-add a per-language regex port.

After this, mock/_telemetry.py has zero remaining imports from snowflake.connector.

Checklist

• I acknowledge that I have ensured my changes to be thread-safe

---

Stack (via Graphite)

• #4307
• #4282
• #4308
• #4309
• #4313
• #4314

🤖 Generated with Claude Code

[sfc-gh-fpawlowski]

Warning

This pull request is not mergeable via GitHub because a downstack PR is open. Once all requirements are satisfied, merge this PR as a stack on Graphite.
Learn more

• SNOW-2912540: decouple LocalTestOOBTelemetryService from connector.telemetry_oob #4309 : 2 dependent PRs (#4310 , #4313 ) 👈 (View in Graphite)
• SNOW-2912540: inline _create_temp_stage and _create_temp_file_format into analyzer_utils #4308
• SNOW-2912540: define ASYNC_RETRY_PATTERN and compat.OK locally #4282
• SNOW-2912540: translate create_temp_table=True to table_type in AST encoding (rebased onto main) #4307
• main

This stack of pull requests is managed by Graphite. Learn more about stacking.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 95.23%. Comparing base (eaa97e3) to head (4d5e471).

Additional details and impacted files

@@                              Coverage Diff                               @@
##           SNOW-2912540-inline-pandas-staging-helpers    #4309      +/-   ##
==============================================================================
+ Coverage                                       94.95%   95.23%   +0.28%     
==============================================================================
  Files                                             171      171              
  Lines                                           44758    44758              
  Branches                                         7678     7678              
==============================================================================
+ Hits                                            42501    42627     +126     
+ Misses                                           1438     1344      -94     
+ Partials                                          819      787      -32     

☔ View full report in Codecov by Harness.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.