starmen1265
ae7dea9581
- Created LinkParser for unified URL parsing (B站/知乎) - Created IdempotencyChecker for file existence checking - All 23 new tests passing, 95% coverage - Requirements PLAT-01, PLAT-02, PLAT-03 completed Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
120 lines
3.9 KiB
Markdown
120 lines
3.9 KiB
Markdown
---
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phase: 02-platform-skills
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plan: 01
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subsystem: pipeline
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tags: [url-parsing, idempotency, bilibili, zhihu, short-links]
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requires:
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- phase: 01-foundation
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provides: schemas (StepInput), errors (KBError), retry (retry_on_network_error), config (get_settings)
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provides:
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- LinkParser - 统一链接解析器，支持B站/知乎URL解析
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- ParsedLink - 解析结果数据类
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- IdempotencyChecker - 幂等检查机制，避免重复处理
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affects: [02-02, 02-03, phase-03]
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tech-stack:
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added: [requests]
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patterns: [dataclass-for-parsed-data, regex-url-matching, head-redirect-resolution]
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key-files:
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created:
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- kb_pipeline/link_parser.py
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- kb_pipeline/idempotency.py
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- tests/test_pipeline/test_link_parser.py
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- tests/test_pipeline/test_idempotency.py
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modified:
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- kb_pipeline/__init__.py
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key-decisions:
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- "使用 dataclass 定义 ParsedLink，简洁且支持默认值"
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- "短链解析使用 requests.head(allow_redirects=True) 获取最终 URL"
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- "无法识别的 URL 返回 None 而不是抛异常，便于调用方处理"
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- "幂等检查返回 (bool, list[Path]) 元组，提供详细的已存在文件信息"
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patterns-established:
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- "Pattern 1: LinkParser.parse(url) -> Optional[ParsedLink] - 统一解析入口"
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- "Pattern 2: IdempotencyChecker.check_exists(dir, id, platform) -> (bool, list) - 幂等检查模式"
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requirements-completed: [PLAT-01, PLAT-02, PLAT-03]
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duration: 5min
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completed: 2026-03-13
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---
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# Phase 2 Plan 1: Link Parser & Idempotency Summary
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**统一链接解析器和幂等检查机制，支持B站/知乎URL解析和短链自动解析**
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## Performance
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- **Duration:** 5 min
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- **Started:** 2026-03-13T10:09:41Z
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- **Completed:** 2026-03-13T10:14:32Z
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- **Tasks:** 3
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- **Files modified:** 5
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## Accomplishments
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- LinkParser 支持B站视频/专栏、知乎问答/专栏 URL 解析
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- b23.tv 短链自动解析到真实 URL
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- 无法识别的 URL 返回 None（不抛异常）
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- IdempotencyChecker 正确检查文件存在性
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- 所有测试通过（23 个新测试，总计 123 个测试）
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## Task Commits
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Each task was committed atomically:
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1. **Task 1: LinkParser implementation** - `dd94f06` (feat)
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2. **Task 2: IdempotencyChecker implementation** - `bd29425` (feat)
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3. **Task 3: Package exports** - `b8339c6` (feat)
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**Plan metadata:** (pending)
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_Note: TDD tasks had test file created before implementation_
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## Files Created/Modified
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- `kb_pipeline/link_parser.py` - 统一链接解析器，支持B站/知乎URL
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- `kb_pipeline/idempotency.py` - 幂等检查机制
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- `tests/test_pipeline/test_link_parser.py` - LinkParser 单元测试 (15 tests)
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- `tests/test_pipeline/test_idempotency.py` - IdempotencyChecker 单元测试 (8 tests)
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- `kb_pipeline/__init__.py` - 添加新模块导出
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## Decisions Made
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- 使用 dataclass 定义 ParsedLink，简洁且支持默认值
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- 短链解析使用 requests.head(allow_redirects=True)
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- 无法识别的 URL 返回 None 而不是抛异常
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- 幂等检查返回元组 (all_exist, existing_files)
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## Deviations from Plan
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### Auto-fixed Issues
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**1. [Rule 3 - Blocking] Installed missing requests dependency**
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- **Found during:** Task 1 (LinkParser implementation)
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- **Issue:** requests 模块未安装，import 失败
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- **Fix:** 使用 `uv pip install requests` 安装依赖
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- **Files modified:** venv (certifi, charset-normalizer, idna, requests, urllib3)
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- **Verification:** 测试全部通过
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- **Committed in:** dd94f06 (Task 1 commit)
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---
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**Total deviations:** 1 auto-fixed (1 blocking)
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**Impact on plan:** 必要的依赖安装，无范围蔓延
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## Issues Encountered
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None - plan executed smoothly after dependency installation
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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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- LinkParser 和 IdempotencyChecker 已就绪
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- 可用于后续平台适配器的 URL 解析和重复处理防护
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- 测试覆盖率 95%
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---
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*Phase: 02-platform-skills*
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*Completed: 2026-03-13*
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