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phase plan subsystem tags dependency_graph tech_stack key_files decisions metrics
15-output-compat 01 configuration
config
llm-segmentation
pydantic-settings
tdd
requires provides affects
enable_semantic_segmentation-config
srt-processor-integration
added patterns
pydantic-settings
tdd
boolean-env-parsing
created modified
kb_workflow/pipeline/config.py
tests/test_pipeline/test_config.py
duration completed_date
54s 2026-03-23T15:01:37Z

Phase 15 Plan 01: enable_semantic_segmentation 配置集成 Summary

为 KBSettings 添加 enable_semantic_segmentation 字段,允许用户通过环境变量或 ~/.kb_env 文件控制 LLM 语义分段功能。

One-Liner

Pydantic settings 集成 - 添加 enable_semantic_segmentation 布尔配置字段(默认 True),支持环境变量 KB_ENABLE_SEMANTIC_SEGMENTATION 覆盖。

Completed Tasks

Task Name Commit Files
1 添加 enable_semantic_segmentation 字段到 KBSettings f2a1847, 8303cea kb_workflow/pipeline/config.py, tests/test_pipeline/test_config.py

Implementation Details

KBSettings 字段添加

在 kb_workflow/pipeline/config.py 的 KBSettings 类中添加新字段:

# 工作流行为配置
enable_semantic_segmentation: bool = Field(
    default=True,
    description="启用 LLM 语义分段(默认启用)"
)

字段位置: 在 overwrite_archives 字段之后,保持配置分类清晰。

测试实现 (TDD)

RED 阶段:

  • 提交 f2a1847: 添加 4 个失败测试
    • test_kbsettings_has_enable_semantic_segmentation_field: 验证字段存在性和类型
    • test_enable_semantic_segmentation_default_value: 验证默认值为 True
    • test_enable_semantic_segmentation_from_env: 验证环境变量覆盖
    • test_enable_semantic_segmentation_boolean_parsing: 验证多种布尔字符串解析

GREEN 阶段:

  • 提交 8303cea: 实现字段定义,所有测试通过
  • 运行验证:pytest tests/test_pipeline/test_config.py::TestEnableSemanticSegmentationField -x -v
  • 结果:4 个测试全部通过

环境变量解析

Pydantic-settings 自动支持以下布尔字符串表示(通过 bool 类型自动解析):

True 值:

  • "true", "True", "TRUE"
  • "yes", "y"
  • "1"

False 值:

  • "false", "False", "FALSE"
  • "no", "n"
  • "0"

配置方式

用户可通过以下方式控制语义分段功能:

  1. 环境变量:

    export KB_ENABLE_SEMANTIC_SEGMENTATION=true
    
  2. ~/.kb_env 文件:

    KB_ENABLE_SEMANTIC_SEGMENTATION=false
    
  3. 代码覆盖(用于测试):

    settings = KBSettings(
        base_path="/tmp/kb",
        archive_path="/tmp/archive",
        enable_semantic_segmentation=False
    )
    

Deviations from Plan

Auto-fixed Issues

None - plan executed exactly as written.

Auth Gates

None.

Requirements Satisfied

  • CONFIG-01: LLM 分段功能可通过配置启用/禁用 ✅
    • enable_semantic_segmentation 字段存在,类型为 bool
    • 默认值为 True(启用语义分段)
    • 支持环境变量 KB_ENABLE_SEMANTIC_SEGMENTATION 覆盖
    • Pydantic 自动解析布尔字符串(true/false, yes/no, 1/0)

Verification Results

Automated Tests

pytest tests/test_pipeline/test_config.py::TestEnableSemanticSegmentationField -x -v

tests/test_pipeline/test_config.py::TestEnableSemanticSegmentationField::test_kbsettings_has_enable_semantic_segmentation_field PASSED [ 25%]
tests/test_pipeline/test_config.py::TestEnableSemanticSegmentationField::test_enable_semantic_segmentation_default_value PASSED [ 50%]
tests/test_pipeline/test_config.py::TestEnableSemanticSegmentationField::test_enable_semantic_segmentation_from_env PASSED [ 75%]
tests/test_pipeline/test_config.py::TestEnableSemanticSegmentationField::test_enable_semantic_segmentation_boolean_parsing PASSED [100%]

4 passed in 0.29s

Full Test Suite

pytest tests/test_pipeline/test_config.py -v

18 passed in 0.32s

所有现有测试继续通过,无破坏性变更。

Next Steps

计划 15-02 将集成此配置到 SRTProcessor,使 enable_semantic_segmentation 从 KBSettings 读取而非硬编码默认值。

Self-Check: PASSED

  • 所有修改的文件存在
  • 所有提交已创建(f2a1847, 8303cea)
  • 所有测试通过(18/18)
  • 配置字段类型和默认值正确
  • 环境变量解析符合预期
  • 无破坏性变更

Phase: 15-output-compat, Plan: 01 Completed: 2026-03-23T15:01:37Z Duration: 54s TDD Methodology: RED → GREEN → (no refactor needed)