fix(resources): support multiple named devcontainer configurations in auto-discovery #3295
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cleveragents/cleveragents-core!3295
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Summary
Extends
DevcontainerDiscoveryResultanddiscover_devcontainers()in the resource handler discovery module to support named devcontainer configurations (.devcontainer/<name>/devcontainer.json), enabling correct auto-discovery of all devcontainer instances in monorepo projects. Previously, only the two fixed root-level paths were scanned, silently ignoring any named configurations.Changes
DevcontainerDiscoveryResult— newconfig_nameattribute: Added aconfig_name: str | Nonefield to the discovery result dataclass. Named configurations (discovered under.devcontainer/<name>/) carry the subdirectory name (e.g."api","frontend") asconfig_name; root-level configurations (.devcontainer/devcontainer.jsonand.devcontainer.json) retainconfig_name=Nonefor full backward compatibility. Validation enforces thatconfig_nameis either a non-empty string orNone.discover_devcontainers()— named-config scan loop: Renamed the internal_SCAN_PATHSconstant to_FIXED_SCAN_PATHSto clarify its role as the legacy fixed-path list. Added a second scan loop that iterates the immediate subdirectories of.devcontainer/(one level deep, no recursive descent) and probes each for adevcontainer.jsonfile. Each discovered named config produces a separateDevcontainerDiscoveryResultwithconfig_nameset to the subdirectory name. Results from the named-config scan are sorted by subdirectory name for deterministic ordering.features/devcontainer_handler.feature— 8 new Behave scenarios: Covers named single config, multiple named configs, mixed root + named configs, root config hasconfig_name=None, root.devcontainer.jsonhasconfig_name=None, named config with invalid JSON is skipped with a warning, and empty.devcontainer/directory produces no named results.features/steps/devcontainer_handler_steps.py— new step definitions: AddedGivenandThenstep implementations required by the 8 new Behave scenarios for named-config cases.robot/devcontainer_handler.robot— 4 new Robot Framework integration tests: End-to-end verification of named-config discovery, mixed root + named discovery, and theconfig_nameattribute onDevcontainerDiscoveryResult.robot/helper_devcontainer_handler.py— 4 new helper commands: Filesystem setup helpers used by the new Robot Framework integration tests to construct the required monorepo directory layouts.CHANGELOG.md— new entry: Added entry under## [Unreleased] / ### Fixeddescribing the named-config auto-discovery fix.Design Decisions
One level deep only: Named configs are discovered by iterating direct subdirectories of
.devcontainer/(i.e..devcontainer/<name>/devcontainer.json). Recursive descent is intentionally excluded to match the devcontainer specification, which defines named configurations at exactly one subdirectory level.config_name=Nonefor root configs: Root-level paths (.devcontainer/devcontainer.jsonand.devcontainer.json) continue to produce results withconfig_name=None. This preserves the existing public interface ofDevcontainerDiscoveryResultand avoids breaking any downstream code that already handles root-level discovery results.Rename
_SCAN_PATHS→_FIXED_SCAN_PATHS: The rename makes it explicit that this constant covers only the two historically fixed paths and is distinct from the new dynamic subdirectory scan. No behaviour change for root-level discovery.Invalid JSON in named configs is skipped with a warning: Consistent with the existing behaviour for root-level configs — a malformed
devcontainer.jsonunder a named subdirectory logs a warning and is excluded from results rather than raising an exception.Deterministic result ordering: Named-config results are sorted by subdirectory name before being appended to the result list, ensuring stable ordering across filesystem implementations and test environments.
Testing
Modules Affected
src/cleveragents/resource/handlers/discovery.py— core fixfeatures/devcontainer_handler.feature— 8 new Behave scenariosfeatures/steps/devcontainer_handler_steps.py— new step definitionsrobot/devcontainer_handler.robot— 4 new Robot Framework integration testsrobot/helper_devcontainer_handler.py— 4 new helper commandsCHANGELOG.md— new entry under [Unreleased] / FixedCloses #2615
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.devcontainer/<name>/devcontainer.json) — monorepo support missing #2615Review Summary
Reviewed PR #3295 with focus on architecture-alignment, module-boundaries, and interface-contracts.
This PR extends
DevcontainerDiscoveryResultanddiscover_devcontainers()to support named devcontainer configurations (.devcontainer/<name>/devcontainer.json), enabling correct auto-discovery of all devcontainer instances in monorepo projects. The implementation is clean, well-tested, and architecturally sound.✅ Specification Compliance
The implementation correctly follows the specification's requirement:
.devcontainer/<name>/devcontainer.jsonare discovered at exactly one subdirectory level, matching the devcontainer specification ✅DevcontainerDiscoveryResultwithconfig_nameset ✅config_name=Nonefor full backward compatibility ✅✅ Architecture Alignment (Deep Dive)
src/cleveragents/resource/handlers/discovery.py. No cross-module dependencies introduced. The discovery module continues to use only stdlib imports (json,logging,pathlib) — no framework or infrastructure layer leakage.DevcontainerDiscoveryResultremains a value object (not a domain entity), which is appropriate for its role as a discovery result carrier.✅ Interface Contracts (Deep Dive)
The interface change to
DevcontainerDiscoveryResultis fully backward compatible:config_name: str | None = Noneis added as a keyword-only argument with a default valueconfig_namewill receiveNone— no breakage__slots__tuple is updated to include"config_name"in sorted orderdiscover_devcontainers()function signature is unchangedlist[DevcontainerDiscoveryResult]is unchangedThe rename of
_SCAN_PATHS→_FIXED_SCAN_PATHSis a private constant rename with no public API impact.✅ Code Quality
config_namevalidation in__init__is thorough — type check (str | None), value check (non-empty string), all before assignment ✅sorted(dc_dir.iterdir())ensures stable results across filesystem implementations ✅# type: ignoresuppressions ✅✅ Test Quality
Behave scenarios (7 new): Comprehensive coverage including:
config_name=None(backward compat verification).devcontainer/directory produces no resultsRobot Framework integration tests (4 new): End-to-end verification through the helper script pattern, covering named single, multiple, mixed, and config_name attribute verification.
Step definitions: Properly typed, well-structured, reuse existing patterns.
✅ Commit Hygiene
fix(resources): ...✅ISSUES CLOSED: #2615✅⚠️ Required Metadata Fix (Non-code)
Missing milestone on PR: The PR has no milestone assigned. Issue #2615 is on milestone v3.6.0. Per CONTRIBUTING.md: "Every PR must be assigned to the same milestone as its primary issue." Please assign milestone v3.6.0 to this PR before merge.
📝 Minor Observations (Non-blocking)
Commit scope mismatch: The issue metadata prescribes
fix(resource)(singular) but the commit usesfix(resources)(plural). This is a minor deviation that could affect automated changelog grouping if the project uses scope-based categorization. Not blocking.Hidden subdirectory edge case: The named-config scan iterates all subdirectories of
.devcontainer/, including dot-prefixed ones (e.g.,.devcontainer/.cache/). Consider filteringsubdir.name.startswith(".")in a future enhancement if this becomes a practical concern. Not blocking for this PR.Pre-existing docstring inaccuracy (not introduced by this PR): The
discover_devcontainers()docstring states it raisesValueError"If resource_type is not a trigger type" but actually returns an empty list for non-trigger types. This is a pre-existing issue.Decision: APPROVED ✅
The code is architecturally clean, the interface changes are backward compatible, the tests are comprehensive, and the implementation correctly aligns with the specification. The only action item is the missing milestone assignment (metadata fix, no code change needed).
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f289b63322506e08ec59.devcontainer/<name>/devcontainer.json) — monorepo support missing506e08ec59a0eac39430PR Readiness Update
Addressed all pre-merge checklist items identified during the awaiting-review check:
✅ Fixed
Missing milestone — Assigned milestone v3.6.0 to match linked issue #2615 (required by CONTRIBUTING.md §11).
Missing CHANGELOG.md entry — Added entry under
## [Unreleased] / ### Fixeddescribing the named-config auto-discovery fix (#2615).Missing dependency link — Added Forgejo dependency: PR #3295 blocks issue #2615 (issue depends on PR), per CONTRIBUTING.md §1 linking requirements.
Branch rebased onto latest master — Branch was behind master by several commits. Successfully rebased and force-pushed. No conflicts.
PR body restored — PR description was cleared during milestone update; restored with full description including
Closes #2615closing keyword.✅ Already Correct
Type/Buglabel ✅Priority/Mediumlabel ✅State/In Review✅ISSUES CLOSED: #2615✅⏳ Awaiting
The PR is now fully ready for review. All metadata requirements are satisfied.
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a0eac394308c2869aa4e8c2869aa4ea05f4c69a7Review Summary (Independent Code Review)
Reviewed PR #3295 with focus on architecture-alignment, module-boundaries, and interface-contracts.
This PR extends
DevcontainerDiscoveryResultanddiscover_devcontainers()to support named devcontainer configurations (.devcontainer/<name>/devcontainer.json), enabling correct auto-discovery of all devcontainer instances in monorepo projects. The implementation is clean, well-tested, and architecturally sound.✅ Specification Compliance
The implementation correctly follows the specification's requirements:
And ADR-043 §3.2:
.devcontainer/<name>/devcontainer.jsonare discovered at exactly one subdirectory level, matching the devcontainer specification ✅DevcontainerDiscoveryResultwithconfig_nameset ✅config_name=Nonefor full backward compatibility ✅✅ Architecture Alignment (Deep Dive)
Given special attention to architecture alignment per review focus:
src/cleveragents/resource/handlers/discovery.py. No cross-module dependencies introduced. The discovery module continues to use only stdlib imports (json,logging,pathlib) — no framework or infrastructure layer leakage.DevcontainerDiscoveryResultremains a value object (not a domain entity), which is appropriate for its role as a discovery result carrier.src/import from this module directly — verified via grep. The module is consumed only by test code and robot helpers, making the interface change even safer.✅ Module Boundaries (Deep Dive)
resource.handlers.discoverymodule — the correct home for discovery logic_FIXED_SCAN_PATHSrename is a private constant (_prefix) with zero public API impact✅ Interface Contracts (Deep Dive)
The interface change to
DevcontainerDiscoveryResultis fully backward compatible:config_name: str | None = Noneis added as a keyword-only argument with a default value — all existing callers that don't passconfig_namewill receiveNonewith no breakage__slots__tuple is updated to include"config_name"in sorted order ✅discover_devcontainers()function signature is unchanged ✅list[DevcontainerDiscoveryResult]is unchanged ✅config_namefollows the same pattern as existing parameters (type check + value check before assignment) ✅✅ Code Quality
config_namevalidation in__init__is thorough — type check (str | None), value check (non-empty string), all before assignment ✅sorted(dc_dir.iterdir())ensures stable results across filesystem implementations ✅# type: ignoresuppressions ✅subdir.is_dir()guard), so the rootdevcontainer.jsonfile is correctly excluded from the named scan ✅✅ Test Quality
Behave scenarios (7 new): Comprehensive coverage including:
config_name=None(backward compat verification).devcontainer/directory produces no resultsRobot Framework integration tests (4 new): End-to-end verification through the helper script pattern, covering named single, multiple, mixed, and
config_nameattribute verification.Step definitions: Properly typed, well-structured, reuse existing patterns.
✅ Commit Hygiene
fix(resources): ...✅ISSUES CLOSED: #2615✅📝 Minor Observations (Non-blocking)
Module docstring typo (inline comment below): The updated module docstring at line 13 says
devcontainer/<name>/devcontainer.json— missing the leading dot. Should be.devcontainer/<name>/devcontainer.json. Cosmetic only.PR description scenario count: The PR body states "8 new Behave scenarios" but I count 7 in the diff. Minor documentation discrepancy.
Commit scope mismatch: The issue metadata prescribes
fix(resource)(singular) but the commit usesfix(resources)(plural). This could affect automated changelog grouping if the project uses scope-based categorization. Not blocking.Hidden subdirectory edge case: The named-config scan iterates all subdirectories of
.devcontainer/, including dot-prefixed ones (e.g.,.devcontainer/.cache/). Consider filteringsubdir.name.startswith(".")in a future enhancement if this becomes a practical concern. Not blocking for this PR.Missing Behave scenarios for config_name validation: There are no Behave scenarios testing
config_namevalidation (TypeError for non-str input, ValueError for empty string). These are tested indirectly through the Robot helpercmd_discovery_named_config_name_attr, but explicit Behave scenarios would improve coverage documentation. Consider adding in a follow-up.Pre-existing docstring inaccuracy (not introduced by this PR): The
discover_devcontainers()docstring states it raisesValueError"If resource_type is not a trigger type" but actually returns an empty list for non-trigger types.Recommendation: APPROVE ✅
The code is architecturally clean, the interface changes are fully backward compatible, the tests are comprehensive, and the implementation correctly aligns with the specification and ADR-043. All CONTRIBUTING.md requirements are satisfied. The observations above are non-blocking and can be addressed in follow-up work.
Note: This review recommends approval but was posted as COMMENT due to Forgejo permissions. A non-author reviewer should apply the formal APPROVED state.
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@ -10,6 +10,11 @@ resource is linked to a project. The scanner walks the top levelof the resource location (no recursive descent) and validates each``devcontainer.json`` before registration.Named configurations (``devcontainer/<name>/devcontainer.json``) areMinor typo:
devcontainer/<name>/devcontainer.jsonis missing the leading dot. Should be.devcontainer/<name>/devcontainer.jsonto match the actual filesystem path pattern. Non-blocking.