52 lines
1.6 KiB
Markdown
52 lines
1.6 KiB
Markdown
# Code Review: FRE-327 - Checkpoint & Resume
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## Verdict: APPROVED with suggestions
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Reviewed all 4 files in `src/checkpoint/`:
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- `__init__.py` (13 lines)
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- `checkpoint_schema.py` (218 lines)
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- `state_manager.py` (326 lines)
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- `resume_handler.py` (303 lines)
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## Strengths
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✅ Well-designed checkpoint schema with proper versioning
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✅ Atomic file writes to prevent corruption
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✅ Book hash validation to detect input changes
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✅ Good progress tracking per stage
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✅ Graceful interrupt handling with checkpoint saving
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✅ Clear separation between StateManager and ResumeHandler
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## Suggestions (non-blocking)
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### 1. resume_handler.py:121-122 - Dead code
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```python
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if self._checkpoint is None and self.should_resume():
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pass
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```
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This does nothing and should be removed.
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### 2. resume_handler.py:207-208 - Dead code
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```python
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if self._checkpoint is None and self.should_resume():
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pass
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```
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Another dead code block that should be removed.
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### 3. checkpoint_schema.py:154 - Potential KeyError
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```python
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return CheckpointStage[self.current_stage.upper()]
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```
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Could raise KeyError if `current_stage` is set to an invalid value. Consider using `.get()` instead.
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### 4. state_manager.py:155-156, 188, 210 - Import inside function
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```python
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from src.checkpoint.checkpoint_schema import StageProgress
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```
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These imports should be at module level for efficiency.
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### 5. state_manager.py:319-324 - Directory hash performance
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`compute_directory_hash` reads all files which could be slow for large directories. Consider caching or using mtime-based approach.
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## Overall Assessment
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Solid checkpoint and resume implementation. The issues identified are minor and do not block functionality.
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