starmen1265
46f1724e06
Summary: - WorkflowStateManager with atomic write and backup rotation - 90% test coverage (20 tests) - 5 min execution time State updates: - Plan counter advanced to 3 - Progress: 67% (2/3 plans complete) - Requirements marked complete: PIPE-02, REL-01 Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
128 lines
4.0 KiB
Markdown
128 lines
4.0 KiB
Markdown
---
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phase: 01-foundation
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plan: 01
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subsystem: state-management
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tags: [pydantic, atomic-write, backup-rotation, crash-recovery]
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# Dependency graph
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requires:
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- phase: 01-foundation
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plan: 02
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provides: WorkflowState, StepRecord, StepStatus from schemas.py
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provides:
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- WorkflowStateManager class with atomic write and backup fallback
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- State persistence for workflow steps
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- Idempotent state creation via get_or_create
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affects: [pipeline-executor, workflow-orchestration]
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# Tech tracking
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tech-stack:
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added: []
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patterns:
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- Atomic write pattern (tempfile.mkstemp + os.replace)
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- Backup rotation (state.json -> state.json.bak)
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- Fallback loading (main file -> backup on corruption)
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key-files:
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created:
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- kb_pipeline/state.py
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modified:
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- kb_pipeline/__init__.py
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- tests/test_pipeline/test_state.py
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key-decisions:
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- "Follow gsd-openclaw atomic write pattern for crash-safe persistence"
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- "Return None instead of raising exception when no state file exists"
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- "Silently fallback to backup on JSON parse errors"
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patterns-established:
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- "Atomic write: write to temp file in same directory, then os.replace"
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- "Backup rotation: rename existing state file to .bak before writing new"
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- "Fallback loading: try main file first, then backup on any parse error"
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requirements-completed: [PIPE-02, REL-01, REL-03]
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# Metrics
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duration: 5min
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completed: 2026-03-13
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---
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# Phase 1 Plan 01: WorkflowStateManager Summary
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**WorkflowStateManager 实现原子写入、备份轮转和崩溃恢复的状态管理**
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## Performance
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- **Duration:** 5 min
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- **Started:** 2026-03-13T09:12:34Z
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- **Completed:** 2026-03-13T09:17:28Z
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- **Tasks:** 3
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- **Files modified:** 3
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## Accomplishments
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- WorkflowStateManager with atomic write pattern (tempfile + os.replace)
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- Backup rotation for crash recovery (workflow_state.json -> .bak)
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- Fallback loading when main file is corrupted
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- get_or_create for idempotent state creation
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- 90% test coverage (20 tests)
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## Task Commits
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Each task was committed atomically:
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1. **Task 1: Write failing tests** - `246e403` (test)
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2. **Task 2: Implement WorkflowStateManager** - `624cd76` (feat)
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3. **Task 3: Export from package** - `0dbb0c4` (refactor)
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**Plan metadata:** (pending final commit)
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_Note: TDD tasks had test -> feat -> refactor commits_
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## Files Created/Modified
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- `kb_pipeline/state.py` - WorkflowStateManager with atomic write, backup rotation, and fallback loading
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- `kb_pipeline/__init__.py` - Added WorkflowStateManager to package exports
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- `tests/test_pipeline/test_state.py` - 20 test cases covering all functionality
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## Decisions Made
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- Followed gsd-openclaw reference implementation for atomic write pattern
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- Return None instead of raising exception when no state file exists (simpler API)
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- Silently fallback to backup on JSON parse errors (robustness over strictness)
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## Deviations from Plan
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### Auto-fixed Issues
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**1. [Rule 1 - Bug] Fixed test case for backup fallback**
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- **Found during:** Task 2 (GREEN phase)
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- **Issue:** Test `test_load_falls_back_to_backup_on_corruption` expected backup to exist after single save, but backup is only created on second save
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- **Fix:** Modified test to save twice before corrupting main file, ensuring backup exists
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- **Files modified:** tests/test_pipeline/test_state.py
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- **Verification:** All 20 tests pass
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- **Committed in:** 624cd76 (Task 2 commit)
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---
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**Total deviations:** 1 auto-fixed (1 bug)
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**Impact on plan:** Minor test fix, no scope creep
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## Issues Encountered
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- pytest not found in system PATH - used project's .venv/bin/pytest instead
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## User Setup Required
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None - no external service configuration required.
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## Next Phase Readiness
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- State management foundation complete
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- Ready for pipeline executor implementation
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- Can now track step completion status with crash recovery
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## Self-Check: PASSED
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- kb_pipeline/state.py: FOUND
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- tests/test_pipeline/test_state.py: FOUND
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- 01-01-SUMMARY.md: FOUND
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- Commits: 246e403, 624cd76, 0dbb0c4: FOUND
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---
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*Phase: 01-foundation*
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*Completed: 2026-03-13*
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