Add W3C Baggage propagation#292
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trace_context carries trace/span identity across an HTTP boundary, but nothing propagated cross-cutting key-value context (run_id / tenant / experiment). Add the W3C Baggage header: an immutable Baggage value with parse/format and case-insensitive inject/extract over a headers dict. Wired through facade, executor (AC_baggage_parse / AC_baggage_format), MCP, and the Script Builder with a headless test batch and EN/Zh docs.
Up to standards ✅🟢 Issues
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| Metric | Results |
|---|---|
| Complexity | 48 |
| Duplication | 0 |
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What
Adds W3C Baggage propagation.
trace_contextcarried trace/span identity across an HTTP boundary, but nothing propagated cross-cutting key-value context (run_id/tenant/experiment).Baggage— immutable key-value map (get;set/removereturn new instances;to_dict).parse_baggage(header)— drops optional;metadata, rejects empty keys, percent-decodes.format_baggage(baggage)— percent-encodes keys/values into a header value.inject_baggage/extract_baggage— write/read thebaggageheader on a request dict (case-insensitive extract).Pairs with
trace_context.Layers
utils/baggage/(pure stdliburllib.parse, zero PySide6).__all__.AC_baggage_parse,AC_baggage_format.ac_baggage_parse,ac_baggage_format(read-only).test/unit_test/headless/test_baggage_batch.py(9 tests, no Qt).v84_features_doc.rst(EN + Zh) + toctrees + 3 README What's-new sections.Verification
pytest test/unit_test/headless/test_baggage_batch.py→ 9 passed.ruff check je_auto_control/clean; pylint 10.00/10; bandit clean; radon CC clean.