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feat(resource): implement DevcontainerHandler missing protocol methods #1286

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freemo merged 1 commit from feature/devcontainer-handler-completion into master

2026-04-02 17:08:53 +00:00

freemo commented

2026-04-02 08:49:16 +00:00

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Summary

Implements the four missing protocol methods on DevcontainerHandler required by Epic #825 (ResourceHandler Protocol Completion):

delete() — uses devcontainer exec rm -rf to delete files/directories inside the container; returns DeleteResult(success=False) for missing/stopped containers rather than raising an exception.
list_children() — uses devcontainer exec ls -1 to enumerate workspace entries; returns an empty list on container failure (graceful degradation).
diff() — compares content hashes between the devcontainer workspace and another filesystem location using the existing content_hash() strategy; treats both-absent as no-change via the EMPTY_CONTENT_HASH sentinel.
create_sandbox() — delegates to BaseResourceHandler.create_sandbox with the same lazy-activation guard as resolve() (DETECTED/STOPPED/FAILED states trigger activate_container before sandbox creation).

All four methods raise ValueError for resources with no location, consistent with the existing read(), write(), and discover_children() implementations.

Tests

Adds 18 Behave BDD scenarios in features/devcontainer_handler_protocol_methods.feature:

Success paths for each method
Failure/stopped-container paths (graceful degradation)
Empty-path edge cases (delete with path="" targets workspace root)
ValueError guards for resources with no location
create_sandbox lazy-activation verification for DETECTED and STOPPED states

All 13,789 existing scenarios continue to pass. Lint and typecheck clean.

Closes #1242

## Summary Implements the four missing protocol methods on `DevcontainerHandler` required by Epic #825 (ResourceHandler Protocol Completion): - **`delete()`** — uses `devcontainer exec rm -rf` to delete files/directories inside the container; returns `DeleteResult(success=False)` for missing/stopped containers rather than raising an exception. - **`list_children()`** — uses `devcontainer exec ls -1` to enumerate workspace entries; returns an empty list on container failure (graceful degradation). - **`diff()`** — compares content hashes between the devcontainer workspace and another filesystem location using the existing `content_hash()` strategy; treats both-absent as no-change via the `EMPTY_CONTENT_HASH` sentinel. - **`create_sandbox()`** — delegates to `BaseResourceHandler.create_sandbox` with the same lazy-activation guard as `resolve()` (DETECTED/STOPPED/FAILED states trigger `activate_container` before sandbox creation). All four methods raise `ValueError` for resources with no location, consistent with the existing `read()`, `write()`, and `discover_children()` implementations. ## Tests Adds 18 Behave BDD scenarios in `features/devcontainer_handler_protocol_methods.feature`: - Success paths for each method - Failure/stopped-container paths (graceful degradation) - Empty-path edge cases (`delete` with `path=""` targets workspace root) - `ValueError` guards for resources with no location - `create_sandbox` lazy-activation verification for DETECTED and STOPPED states All 13,789 existing scenarios continue to pass. Lint and typecheck clean. Closes #1242

freemo added 1 commit

2026-04-02 08:49:16 +00:00

feat(resource): implement DevcontainerHandler missing protocol methods

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a19ca8c46b

Implements the four missing protocol methods on DevcontainerHandler
required by Epic #825 (ResourceHandler Protocol Completion):

- delete(): uses 'devcontainer exec rm -rf' to delete files/dirs
  inside the container; returns DeleteResult(success=False) for
  missing/stopped containers rather than raising.

- list_children(): uses 'devcontainer exec ls -1' to enumerate
  workspace entries; returns an empty list on container failure.

- diff(): compares content hashes between the devcontainer workspace
  and another filesystem location; uses EMPTY_CONTENT_HASH sentinel
  to treat both-absent as no-change.

- create_sandbox(): delegates to BaseResourceHandler.create_sandbox
  with lazy activation (same DETECTED/STOPPED/FAILED guard as
  resolve()) so the container is running before sandbox creation.

All methods raise ValueError for resources with no location.

Adds 18 Behave BDD scenarios in
features/devcontainer_handler_protocol_methods.feature covering
success paths, failure/stopped-container paths, empty-path edge
cases, and ValueError guards for each method.

ISSUES CLOSED: #1242

freemo commented

2026-04-02 08:54:09 +00:00

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Owner

🔒 Claimed by pr-reviewer-5. Starting independent code review.

freemo reviewed

2026-04-02 08:59:50 +00:00

freemo left a comment

Code Review — PR #1286: feat(resource): implement DevcontainerHandler missing protocol methods

Summary

This PR implements the four missing protocol methods on DevcontainerHandler required by Epic #825 / Issue #1242: delete(), list_children(), diff(), and create_sandbox(). The implementation is clean, well-documented, and follows established patterns in the codebase.

Review Findings

✅ Specification Alignment

All four methods match the ResourceHandler protocol signatures exactly:

delete(*, resource, path="") -> DeleteResult
list_children(*, resource) -> list[str]
diff(*, resource, other_location) -> DiffResult
create_sandbox(*, resource, plan_id, sandbox_manager) -> SandboxResult

✅ API Consistency

All methods use _require_location() for validation, consistent with existing read(), write(), and discover_children().
Error handling follows the established pattern: ValueError for missing location, graceful DeleteResult(success=False) / empty list for container failures.
create_sandbox() reuses the same lazy-activation guard as resolve().

✅ Test Quality

18 Behave BDD scenarios provide comprehensive coverage:

delete: success, empty path (workspace root), stopped container, no location ValueError (4 scenarios)
list_children: sorted names, stopped container, blank line filtering, no location, ls command verification (5 scenarios)
diff: hash differ, hash match, both absent (EMPTY_CONTENT_HASH sentinel), no location, unified_diff empty (5 scenarios)
create_sandbox: running container, DETECTED state activation, STOPPED state activation, no location (4 scenarios)

Step definitions are well-structured with proper unittest.mock.patch usage, context.add_cleanup for teardown, and the dcpro prefix avoids step collisions.

✅ Correctness

delete() correctly maps empty path to "." for workspace root targeting.
list_children() properly filters blank lines and returns sorted results.
diff() correctly uses EMPTY_CONTENT_HASH sentinel for both-absent case.
create_sandbox() correctly delegates to super().create_sandbox() after lazy activation.

✅ Security

No secrets or credentials in code.
Input validation via _require_location() prevents operations on resources without locations.

⚠️ Minor Note (non-blocking)

The diff() method contains a local import of EMPTY_CONTENT_HASH and BaseResourceHandler from _base, but both symbols are already imported at module level. This redundant import could be removed in a future cleanup pass. Not blocking per review guidelines.

Commit Message

Follows Conventional Changelog format. Footer includes ISSUES CLOSED: #1242. ✓

Decision: APPROVED — Proceeding to merge.

The implementation is correct, well-tested, and aligns with the specification.

## Code Review — PR #1286: feat(resource): implement DevcontainerHandler missing protocol methods ### Summary This PR implements the four missing protocol methods on `DevcontainerHandler` required by Epic #825 / Issue #1242: `delete()`, `list_children()`, `diff()`, and `create_sandbox()`. The implementation is clean, well-documented, and follows established patterns in the codebase. ### Review Findings #### ✅ Specification Alignment All four methods match the `ResourceHandler` protocol signatures exactly: - `delete(*, resource, path="") -> DeleteResult` - `list_children(*, resource) -> list[str]` - `diff(*, resource, other_location) -> DiffResult` - `create_sandbox(*, resource, plan_id, sandbox_manager) -> SandboxResult` #### ✅ API Consistency - All methods use `_require_location()` for validation, consistent with existing `read()`, `write()`, and `discover_children()`. - Error handling follows the established pattern: `ValueError` for missing location, graceful `DeleteResult(success=False)` / empty list for container failures. - `create_sandbox()` reuses the same lazy-activation guard as `resolve()`. #### ✅ Test Quality 18 Behave BDD scenarios provide comprehensive coverage: - **delete**: success, empty path (workspace root), stopped container, no location ValueError (4 scenarios) - **list_children**: sorted names, stopped container, blank line filtering, no location, ls command verification (5 scenarios) - **diff**: hash differ, hash match, both absent (EMPTY_CONTENT_HASH sentinel), no location, unified_diff empty (5 scenarios) - **create_sandbox**: running container, DETECTED state activation, STOPPED state activation, no location (4 scenarios) Step definitions are well-structured with proper `unittest.mock.patch` usage, `context.add_cleanup` for teardown, and the `dcpro` prefix avoids step collisions. #### ✅ Correctness - `delete()` correctly maps empty path to `"."` for workspace root targeting. - `list_children()` properly filters blank lines and returns sorted results. - `diff()` correctly uses `EMPTY_CONTENT_HASH` sentinel for both-absent case. - `create_sandbox()` correctly delegates to `super().create_sandbox()` after lazy activation. #### ✅ Security - No secrets or credentials in code. - Input validation via `_require_location()` prevents operations on resources without locations. #### ⚠️ Minor Note (non-blocking) The `diff()` method contains a local import of `EMPTY_CONTENT_HASH` and `BaseResourceHandler` from `_base`, but both symbols are already imported at module level. This redundant import could be removed in a future cleanup pass. Not blocking per review guidelines. #### Commit Message Follows Conventional Changelog format. Footer includes `ISSUES CLOSED: #1242`. ✓ ### Decision: **APPROVED** — Proceeding to merge. The implementation is correct, well-tested, and aligns with the specification.

freemo referenced this pull request

2026-04-02 09:00:10 +00:00

feat(resource): implement DevcontainerHandler missing protocol methods #1242

freemo commented

2026-04-02 17:03:33 +00:00

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Owner

Review claimed by reviewer pool instance reviewer-pool-1. Dispatching independent code review.

freemo reviewed

2026-04-02 17:08:39 +00:00

freemo left a comment

Independent Code Review — PR #1286 (reviewer-pool-1)

Files Reviewed

src/cleveragents/resource/handlers/devcontainer.py — 4 new protocol methods (~200 lines added)
features/devcontainer_handler_protocol_methods.feature — 18 BDD scenarios (150 lines)
features/steps/devcontainer_handler_protocol_methods_steps.py — Step definitions (576 lines)

Specification Alignment ✅

All four methods match the ResourceHandler protocol signatures in protocol.py exactly:

delete(*, resource, path="") -> DeleteResult
list_children(*, resource) -> list[str]
diff(*, resource, other_location) -> DiffResult
create_sandbox(*, resource, plan_id, sandbox_manager) -> SandboxResult

The implementation satisfies all acceptance criteria from issue #1242 and the parent Epic #825.

API Consistency ✅

All methods use _require_location() for validation, consistent with existing read(), write(), and discover_children().
Error handling follows established patterns: ValueError for missing location, graceful DeleteResult(success=False) / empty list for container failures.
create_sandbox() reuses the same _ACTIVATABLE_STATES lazy-activation guard as resolve().

Test Quality ✅

18 Behave BDD scenarios provide thorough coverage:

delete (4): success, empty path → workspace root, stopped container, no-location ValueError
list_children (5): sorted names, stopped container → empty list, blank line filtering, no-location ValueError, ls command verification
diff (5): hash differ, hash match, both-absent sentinel, no-location ValueError, unified_diff always empty
create_sandbox (4): running container delegation, DETECTED state activation, STOPPED state activation, no-location ValueError

Correctness ✅

delete(): Correctly maps empty path to "." for workspace root targeting.
list_children(): Properly filters blank lines and returns sorted results.
diff(): Correctly uses EMPTY_CONTENT_HASH sentinel and bypasses devcontainer override for other_location hashing.
create_sandbox(): Correctly delegates to super().create_sandbox() after conditional lazy activation.

Type Safety ✅ | Security ✅ | Commit Message ✅

Non-Blocking Observations

Redundant local import in diff(): EMPTY_CONTENT_HASH and BaseResourceHandler are already imported at module level.
File size: devcontainer.py is now ~689 lines (exceeds 500-line guideline). Future refactoring could extract CRUD methods into a sub-module.

Decision: APPROVED — Proceeding to merge with force_merge.

## Independent Code Review — PR #1286 (reviewer-pool-1) ### Files Reviewed 1. `src/cleveragents/resource/handlers/devcontainer.py` — 4 new protocol methods (~200 lines added) 2. `features/devcontainer_handler_protocol_methods.feature` — 18 BDD scenarios (150 lines) 3. `features/steps/devcontainer_handler_protocol_methods_steps.py` — Step definitions (576 lines) ### Specification Alignment ✅ All four methods match the `ResourceHandler` protocol signatures in `protocol.py` exactly: - `delete(*, resource, path="") -> DeleteResult` - `list_children(*, resource) -> list[str]` - `diff(*, resource, other_location) -> DiffResult` - `create_sandbox(*, resource, plan_id, sandbox_manager) -> SandboxResult` The implementation satisfies all acceptance criteria from issue #1242 and the parent Epic #825. ### API Consistency ✅ - All methods use `_require_location()` for validation, consistent with existing `read()`, `write()`, and `discover_children()`. - Error handling follows established patterns: `ValueError` for missing location, graceful `DeleteResult(success=False)` / empty list for container failures. - `create_sandbox()` reuses the same `_ACTIVATABLE_STATES` lazy-activation guard as `resolve()`. ### Test Quality ✅ 18 Behave BDD scenarios provide thorough coverage: - **delete** (4): success, empty path → workspace root, stopped container, no-location ValueError - **list_children** (5): sorted names, stopped container → empty list, blank line filtering, no-location ValueError, ls command verification - **diff** (5): hash differ, hash match, both-absent sentinel, no-location ValueError, unified_diff always empty - **create_sandbox** (4): running container delegation, DETECTED state activation, STOPPED state activation, no-location ValueError ### Correctness ✅ - `delete()`: Correctly maps empty path to `"."` for workspace root targeting. - `list_children()`: Properly filters blank lines and returns sorted results. - `diff()`: Correctly uses `EMPTY_CONTENT_HASH` sentinel and bypasses devcontainer override for other_location hashing. - `create_sandbox()`: Correctly delegates to `super().create_sandbox()` after conditional lazy activation. ### Type Safety ✅ | Security ✅ | Commit Message ✅ ### Non-Blocking Observations 1. **Redundant local import in `diff()`**: `EMPTY_CONTENT_HASH` and `BaseResourceHandler` are already imported at module level. 2. **File size**: `devcontainer.py` is now ~689 lines (exceeds 500-line guideline). Future refactoring could extract CRUD methods into a sub-module. ### Decision: **APPROVED** — Proceeding to merge with force_merge.

freemo merged commit ee980ee117 into master

2026-04-02 17:08:53 +00:00

freemo referenced this pull request from a commit

2026-04-02 17:08:54 +00:00

feat(resource): implement DevcontainerHandler missing protocol methods (#1286)

freemo deleted branch feature/devcontainer-handler-completion

2026-04-02 17:08:54 +00:00

freemo referenced this pull request

2026-04-02 17:09:01 +00:00

feat(resource): implement DevcontainerHandler missing protocol methods #1242

freemo referenced this pull request

2026-04-02 17:11:30 +00:00