Add dynamic lookup for enterprise SASL mechanisms from source code

[JakeSCahill]

Recent changes in Redpanda's codebase modified how SASL mechanism defaults are defined, which broke our property extraction automation. The automation was returning internal C++ function names and type identifiers instead of user-friendly values:

• Enterprise values showing as function names: "is_enterprise_sasl_mechanism" instead of ["GSSAPI", "OAUTHBEARER"]
• Type extraction showing C++ internal types: "config::sasl_mechanisms_override" instead of "object"
• Default values displaying C++ constructor syntax instead of resolved values

The property extractor now correctly generates:

{
  "sasl_mechanisms": {
    "enterprise_value": ["GSSAPI", "OAUTHBEARER"],
    "default": ["SCRAM"]
  },
  "sasl_mechanisms_overrides": {
    "enterprise_value": "Any override containing enterprise mechanisms (GSSAPI, OAUTHBEARER).",
    "items": {
      "type": "object"
    }
  }
}

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📝 Walkthrough

Walkthrough

• package.json: Version bumped from 4.10.0 to 4.10.1.
• tools/property-extractor/property_extractor.py: Added dynamic resolution for enterprise SASL mechanisms via get_enterprise_sasl_mechanisms(), and constexpr identifier resolution via resolve_constexpr_identifier(). Integrated these into existing type/default resolution paths with fallbacks.
• tools/property-extractor/transformers.py: Added lazy import helper get_resolve_constexpr_identifier(). Enhanced type extraction for nested templates. Extended FriendlyDefaultTransformer with identifier resolution, sstring constructor and vector initializer parsing, and std::chrono formatting, with fallbacks.

Sequence Diagram(s)

sequenceDiagram
  autonumber
  participant PE as PropertyExtractor
  participant TF as FriendlyDefaultTransformer
  participant SRC as Redpanda Source Tree
  participant FS as Filesystem

  note over PE,SRC: New/Changed: constexpr & enterprise SASL resolution

  PE->>TF: parse(default_value, type)
  alt default references constexpr identifier
    TF->>TF: _get_resolver() [lazy cache]
    TF->>PE: get_resolve_constexpr_identifier()
    TF->>SRC: resolve_constexpr_identifier(identifier)
    alt identifier found
      SRC-->>TF: literal string value
      TF-->>PE: resolved value
    else not found
      TF-->>PE: fallback to original/default
    end
  else default is vector or sstring or chrono
    TF->>TF: _process_sstring_constructor / _parse_vector_contents / CHRONO
    TF-->>PE: parsed value
  end

  note over PE,FS: Enterprise SASL mechanisms resolution

  PE->>FS: locate sasl_mechanisms.h
  FS-->>PE: file contents or not found
  alt file found and parsed
    PE->>SRC: resolve_constexpr_identifier(...) for each mechanism
    SRC-->>PE: concrete strings (where available)
    PE-->>PE: set mechanisms list
  else failure
    PE-->>PE: use fallback ["GSSAPI", "OAUTHBEARER"] or descriptive override
  end

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Estimated code review effort

🎯 4 (Complex) | ⏱️ ~60 minutes

Suggested reviewers

• paulohtb6

Pre-merge checks and finishing touches

✅ Passed checks (3 passed)

Check name	Status	Explanation
Title Check	✅ Passed	The title clearly and succinctly summarizes the main purpose of the changeset by stating that dynamic lookup for enterprise SASL mechanisms is added from the source code, which aligns precisely with the PR’s core objective.
Description Check	✅ Passed	The pull request description directly addresses the broken property extraction of SASL mechanisms, details the specific automation fixes and example outputs, and clearly maps to the changes introduced in the code, demonstrating clear relevance to the changeset.
Docstring Coverage	✅ Passed	Docstring coverage is 82.61% which is sufficient. The required threshold is 80.00%.

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Note

Generated docstrings for this pull request at #138

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Actionable comments posted: 2

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📥 Commits

Reviewing files that changed from the base of the PR and between f3f1a6d and d4eb0c4.

⛔ Files ignored due to path filters (1)

• package-lock.json is excluded by !**/package-lock.json

📒 Files selected for processing (3)

• package.json (1 hunks)
• tools/property-extractor/property_extractor.py (6 hunks)
• tools/property-extractor/transformers.py (4 hunks)

🧰 Additional context used

🧬 Code graph analysis (1)

tools/property-extractor/transformers.py (1)

tools/property-extractor/property_extractor.py (1)

• resolve_constexpr_identifier (343-421)

🪛 Ruff (0.13.3)

tools/property-extractor/property_extractor.py

399-399: Loop control variable dirs not used within loop body

Rename unused dirs to _dirs

(B007)

---

922-922: Local variable original_s is assigned to but never used

Remove assignment to unused variable original_s

(F841)

tools/property-extractor/transformers.py

41-41: Consider moving this statement to an else block

(TRY300)

---

43-43: Redundant exception object included in logging.exception call

(TRY401)

---

461-461: Unused method argument: file_pair

(ARG002)

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492-492: Redundant exception object included in logging.exception call

(TRY401)

---

549-549: Unused method argument: file_pair

(ARG002)

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• GitHub Check: Redirect rules - docs-extensions-and-macros
• GitHub Check: Header rules - docs-extensions-and-macros
• GitHub Check: Pages changed - docs-extensions-and-macros