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fix(plugins): keep a log record's arguments when redacting it - #2251
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Redaction formatted every record and dropped its arguments. uvicorn's access log unpacks its five arguments, so on the deployed host every request logged "TypeError: cannot unpack non-iterable NoneType object" in place of its access line. Each argument is now redacted in place, keeping its shape and type, and a template with arguments is left whole so its placeholders still match. A record whose credential shows only once formatted, split across the template and its arguments, still keeps just its redacted text.
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Review comments at @plugins/remote/host/redacted_logs.py:
- Line 65: Update the mapping-argument handling around `record.args` so
unchanged values retain the original mapping, preserving behaviors such as
`defaultdict.__missing__`; when redaction changes values, apply replacements
without converting the mapping to a plain `dict` or losing its lookup behavior.
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plugins/remote/host/redacted_logs.pyplugins/remote/host/tests/test_redacted_logs.py
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| # access log unpacks its five. Only one that holds a credential is replaced, | ||
| # and a template with arguments is left whole, so its placeholders still match. | ||
| if isinstance(record.args, Mapping): | ||
| record.args = {key: _redacted_value(v) for key, v in record.args.items()} |
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🎯 Functional Correctness | 🟡 Minor | ⚡ Quick win
Preserve mapping lookup behavior when redacting arguments.
If a caller logs with a nonempty defaultdict, copying it into a plain dict removes its __missing__ behavior. For example, logger.warning("%(missing)s", defaultdict(lambda: "fallback", {"other": "value"})) previously formats, but record.getMessage() now raises KeyError. _redact returns, and the handler loses the log line. Keep the original mapping when its values do not change; preserve lookup behavior when redacted values require a replacement. Add one mapping-argument check. (raw.githubusercontent.com)
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Review comment at @plugins/remote/host/redacted_logs.py at line 65:
Update the mapping-argument handling around `record.args` so unchanged values
retain the original mapping, preserving behaviors such as
`defaultdict.__missing__`; when redaction changes values, apply replacements
without converting the mapping to a plain `dict` or losing its lookup behavior.
After applying the fix, consider running `coderabbit review --agent` for local
review. Visit https://docs.coderabbit.ai/cli?utm_source=ghpr
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Found on the first deploy of the plugin host at
plugins.surfsense.com. The log redaction from #2249 formatted every record and then set itsargstoNone. uvicorn's access-log formatter unpacks a record's five arguments (client, method, path, version, status). So every request logged Python's "Logging error" withTypeError: cannot unpack non-iterable NoneType objectin place of its access line. Requests were still served, but the access log was lost.Fix (
plugins/remote/host/redacted_logs.py):%splaceholders still match its arguments.Tests:
AccessFormatterformats a redacted access record (POST /web-crawl/mcp?key=*** HTTP/1.1 200 OK), and a credential split between the template and its arguments, or held inside an exception argument, is hidden.tests/test_redacted_logs.py,tests/test_host.pyandproprietary/license_check: 41 passed. Ruff is clean."GET /health?key=*** HTTP/1.1" 200 OKwith zero logging errors.After merging, redeploy
surfsense-plugin-hoston Coolify (it builds fromdev).High-level PR Summary
This PR fixes a logging bug in the plugin host where credential redaction was breaking uvicorn's access logs. The original implementation set log record arguments to
Noneafter redaction, causing uvicorn's formatter (which unpacks five specific arguments) to crash with aTypeError. The fix preserves the shape and structure of log arguments while still redacting credentials within them, handling cases where credentials appear in mappings, tuples, or are split between message templates and their arguments.⏱️ Estimated Review Time: 5-15 minutes
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plugins/remote/host/tests/test_redacted_logs.pyplugins/remote/host/redacted_logs.pySummary by CodeRabbit