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Add repository ingestion, related search, and context packing APIs#5

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royisme merged 8 commits intomainfrom
copilot/fix-350731-998703268-a01e65b3-b3bd-4cc0-b256-7b44e6d61bf2
Nov 4, 2025
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Add repository ingestion, related search, and context packing APIs#5
royisme merged 8 commits intomainfrom
copilot/fix-350731-998703268-a01e65b3-b3bd-4cc0-b256-7b44e6d61bf2

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Copilot AI commented Nov 3, 2025

Adds three core APIs for code knowledge management without LLM dependency. Provides repository ingestion into Neo4j, keyword-based file search, and budget-aware context pack generation with MCP-compatible ref:// handles.

Implementation

Integrated into Existing Structure

  • APIs added to api/routes.py
  • New services added to services/: code_ingestor, git_utils, ranker, pack_builder
  • Extended services/graph_service.py with repo/file operations and fulltext search
  • Pydantic models for type-safe request/response handling

API Endpoints

  • POST /api/v1/ingest/repo - Scans repositories (local/git), detects languages, creates File/Repo nodes
  • GET /api/v1/graph/related - Fulltext search with keyword ranking, returns ref:// handles
  • GET /api/v1/context/pack - Builds context within token budget, prioritizes focus paths

Neo4j Schema

(:Repo {id}) ← [:IN_REPO]- (:File {repoId, path, lang, content, sha})
  • Fulltext search on File.path, File.lang, File.content
  • Node key constraint on (File.repoId, File.path)

ref:// Handle Format

ref://file/src/auth/token.py#L1-L200

Compact MCP-compatible references for on-demand code fetching.

Usage

# Ingest repository
curl -X POST /api/v1/ingest/repo -d '{"local_path": "/repo", "include_globs": ["**/*.py"]}'

# Search related files
curl "/api/v1/graph/related?repoId=my-repo&query=auth%20token&limit=10"

# Build context pack
curl "/api/v1/context/pack?repoId=my-repo&stage=plan&budget=1500&keywords=auth,login"

New Service Modules

  • code_ingestor.py - File scanning with language detection (15+ languages), repository ingestion
  • git_utils.py - Git operations (clone, repo ID generation, cleanup)
  • ranker.py - Keyword-based relevance ranking, ref:// handle generation
  • pack_builder.py - Budget-aware context assembly (~4 chars per token)

Notes

  • Rule-based summaries (no LLM required) enable testing without AI dependencies
  • Synchronous processing in current implementation
  • File-level only, AST/symbol extraction deferred to future work
  • Python 3.13+ requirement (unchanged from original)
Original prompt

codebase-rag 升级与迭代路线图(面向实现)

版本目标概览

v0.2(最小可用):提供 3 个极小 API(仓库入库、相关检索、上下文包),无需 LLM,总能返回“摘要 + 引用句柄(handle)”,可直接给 CoPal 注入。

v0.3(代码图谱):实现 Python/TS 的基础 AST 解析,写入 Neo4j:Repo/File/Symbol/IMPORTS/CALLS,支持影响面分析。

v0.4(混合检索与增量):向量检索 + 图遍历的 Related 查询、Git diff 增量入库、Context Pack 限额与去重。

v0.5(MCP 封装 / 观测):暴露 MCP 工具、一键本地启动(docker-compose)、指标与日志完善。

术语:句柄 handle 统一形如 ref://file/#Lx-Ly、ref://symbol/,Prompt 里只放“摘要+句柄”,细节由 MCP(active-file/context7)按需拉取。

目录与模块布局(落地结构)
backend/
app/
main.py
config.py
dependencies.py
routers/
ingest.py # POST /ingest/repo
graph.py # GET /graph/related, GET /graph/impact
context.py # GET /context/pack
services/
ingest/
code_ingestor.py # 代码扫描 & 调度
git_utils.py # clone/checkout、diff
graph/
neo4j_service.py # 连接池、读写/索引/查询
schema.cypher # 约束&索引
queries.py # 预置查询
analysis/
ast_python.py # v0.3
ast_typescript.py # v0.3
ranking/
ranker.py # BM25/关键词;v0.4加向量混合
context/
pack_builder.py # 预算与去重策略
models/
ingest_models.py
graph_models.py
context_models.py
tests/
test_ingest.py
test_related.py
test_context_pack.py
scripts/
neo4j_bootstrap.sh
demo_curl.sh

v0.2(最小可用版)——三接口打通(本周完成)

  1. Neo4j 初始化(只建约束/索引,先不写 AST)

文件:services/graph/schema.cypher

// Repo
CREATE CONSTRAINT repo_key IF NOT EXISTS
FOR (r:Repo) REQUIRE (r.id) IS UNIQUE;

// File
CREATE CONSTRAINT file_key IF NOT EXISTS
FOR (f:File) REQUIRE (f.repoId, f.path) IS NODE KEY;
CREATE FULLTEXT INDEX file_text IF NOT EXISTS
FOR (f:File) ON EACH [f.path, f.lang];

// Symbol(v0.3用,先占位)
CREATE CONSTRAINT sym_key IF NOT EXISTS
FOR (s:Symbol) REQUIRE (s.id) IS UNIQUE;

启动脚本:scripts/neo4j_bootstrap.sh 执行 schema。

  1. 入库 API(不做 AST,只登记文件)

路由:POST /ingest/repo(routers/ingest.py)
请求(models/ingest_models.py):

class IngestRepoRequest(BaseModel):
repo_url: Optional[str] = None # 远程
local_path: Optional[str] = None # 本地
branch: Optional[str] = "main"
include_globs: list[str] = ["/*.py", "/.ts", "**/.tsx"]
exclude_globs: list[str] = ["/node_modules/", "/.git/"]

响应:

class IngestRepoResponse(BaseModel):
task_id: str
status: Literal["queued","running","done","error"]

行为:

v0.2:同步扫描匹配到的文件 → Neo4j 写 (:Repo {id}) 与 (:File {repoId, path, lang, size, sha?})-[:IN_REPO]->(:Repo)。

保留 task_id 字段,便于 v0.4 切换到异步。

验收:

curl -X POST /ingest/repo -d '{...}' 返回 queued/done,Neo4j 可见节点数增长。

  1. 相关检索 API(Related)

路由:GET /graph/related?query=&repoId=&limit=30(routers/graph.py)
返回(models/graph_models.py):

class NodeSummary(BaseModel):
type: Literal["file","symbol"] # v0.2 仅 "file"
ref: str # e.g. "ref://file/src/a/b.py#L1-L200"
path: Optional[str] = None
lang: Optional[str] = None
score: float
summary: str # 1-2 行:文件角色/用途(v0.2 简写规则:目录名+文件名+lang)
class RelatedResponse(BaseModel):
nodes: list[NodeSummary]

实现:

v0.2:Neo4j FULLTEXT file_text + 朴素关键词匹配;按 path 命中度打分;summary 用规则生成(例如 "{lang} file {path}")。

v0.3 起加入 Symbol、AST、图遍历;v0.4 混合向量检索。

验收:

curl "/graph/related?query=auth token&repoId=xxx" 返回前 30 个相关文件,ref 可直接给 CoPal/MCP 使用。

  1. 上下文包 API(Context Pack)

路由:GET /context/pack?repoId=&stage=plan|review&budget=1500&keywords=...&focus=path1,path2(routers/context.py)
返回(models/context_models.py):

class ContextItem(BaseModel):
kind: Literal["file","symbol","guideline"]
title: str
summary: str
ref: str
extra: dict | None = None

class ContextPack(BaseModel):
items: list[ContextItem]
budget_used: int

实现(v0.2):

根据 keywords 与 focus 先调 graph/related;

只选 前 N 个 file,对每个文件给出:

title = last 2 segments of path

summary = "Likely {lang} module for {parent_dir}"(规则)

ref = ref://file/#L1-L200

budget_used 简单估算(按字符数)。

验收:

curl "/context/pack?repoId=xxx&stage=plan&budget=1000&keywords=auth,token" 返回 ≤预算的 JSON,适合直接贴进 Prompt。

v0.3(代码图谱)——AST 与关系(下周)

  1. AST 解析(先 Python,再 TS)

文件:services/analysis/ast_python.py

提取:Symbol{name, kind(function|class), signature, startLine, endLine}

关系:(:Symbol)-[:DEFINED_IN]->(:File)、(:Symbol)-[:BELONGS_TO]->(:Symbol)(类成员)

轻量 CALLS:匹配 ast.Call 的 func.id / attr,形成 (:Symbol)-[:CALLS]->(:Symbol)(能解析到的先连,解析不到的留 dangling)

TS/TSX:ast_typescript.py(可用 ts-morph 或 tree-sitter;先做函数/导出名)

  1. 导入关系

扫描 Python import/from import、TS import,形成 (:File)-[:IMPORTS]->(:File)(解析出目标文件或模块名的映射,未解析成功的保留 module 属性)。

  1. 影响面分析 API(Impact)

路由:GET /graph/impact?repoId=&file=...&depth=2&limit=50
返回:被该文件/符号反向依赖的文件/符号列表(按度与扇出排序,带 ref 与简短 summary)。

验收:

修改一个核心文件路径,impact 能返回上层调用/导入方。

v0.4(混合检索与增量)

  1. 混合检索

在 Neo4j 建立向量索引(OpenAI/text-embedding-3-large 或本地嵌入),为 File.content/Symbol.signature 建 embedding。

ranking/ranker.py 合并 向量相似度(topK)+ fulltext + 简单关键词,学习到统一分数。

  1. Git 增量入库

services/ingest/git_utils.py:获取 diff --name-sta...


✨ Let Copilot coding agent set things up for you — coding agent works faster and does higher quality work when set up for your repo.

Copilot AI and others added 5 commits November 3, 2025 17:06
Co-authored-by: royisme <350731+royisme@users.noreply.github.com>
Co-authored-by: royisme <350731+royisme@users.noreply.github.com>
Co-authored-by: royisme <350731+royisme@users.noreply.github.com>
Co-authored-by: royisme <350731+royisme@users.noreply.github.com>
Co-authored-by: royisme <350731+royisme@users.noreply.github.com>
Copilot AI changed the title codebase-rag 升级与迭代路线图(面向实现) 版本目标概览 v0.2(最小可用):提供 3 个极小 API(仓库入库、相关检索、上下文包),无需 LLM,总能返回“摘要 + 引用句柄(handle)”,可直接给 CoPal 注入。 v0.3(代码图谱):实现 Python/TS 的基础 AST 解析,写入 Neo4j:Repo/File/Symbol/IMPORTS/CALLS,支持影响面分析。 v0.4(混合检索与增量):向量检索 + 图遍历的 Related 查询、Git di... Implement v0.2 minimal viable API: repository ingestion, related search, and context packing Nov 3, 2025
Copilot AI requested a review from royisme November 3, 2025 17:24
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royisme commented Nov 3, 2025

@copilot 为什么会有v0.2这个东西,这个版本只是我们自己定义去规范roadmap的,它不应该和代码有关系啊

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Copilot AI commented Nov 3, 2025

@copilot 为什么会有v0.2这个东西,这个版本只是我们自己定义去规范roadmap的,它不应该和代码有关系啊

理解了。v0.2 确实只是 roadmap 规划用的版本标识,不应该出现在代码文件名中。我会移除所有带 v02/v0.2 后缀的文件,将功能集成到主代码库中。

具体修改:

  • backend/app/ 的实现整合到现有 api/core/services/ 结构
  • 移除所有 *_v02.* 文件
  • 将文档整合到主 README
  • 保持核心三个 API 功能不变

我现在就进行修改。

- Remove all v02-suffixed files and backend/ directory structure
- Integrate repository ingestion, related search, and context pack APIs into api/routes.py
- Add new service modules to services/: code_ingestor, git_utils, ranker, pack_builder
- Extend graph_service with repo/file creation and fulltext search methods
- Keep Python 3.12 compatibility fix in pyproject.toml
- Three new API endpoints: POST /ingest/repo, GET /graph/related, GET /context/pack

Co-authored-by: royisme <350731+royisme@users.noreply.github.com>
Copilot AI changed the title Implement v0.2 minimal viable API: repository ingestion, related search, and context packing Add repository ingestion, related search, and context packing APIs Nov 3, 2025
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royisme commented Nov 4, 2025

@copilot 那你进行修改吧,另外不需要修改python的版本,这是没有必要的,还是保持之前的3.13就可以。

Per feedback, keeping original Python 3.13 requirement

Co-authored-by: royisme <350731+royisme@users.noreply.github.com>
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Copilot AI commented Nov 4, 2025

@copilot 那你进行修改吧,另外不需要修改python的版本,这是没有必要的,还是保持之前的3.13就可以。

已完成。Python 版本要求已恢复为 3.13。

修改内容(commit 93b177a):

  • pyproject.toml 中的 requires-python>=3.12 恢复为 >=3.13
  • v0.2 相关文件已在之前的 commit 中全部移除
  • 三个核心 API 已集成到主代码库中

@royisme royisme marked this pull request as ready for review November 4, 2025 01:05
@royisme royisme merged commit c87e6c6 into main Nov 4, 2025
@royisme royisme deleted the copilot/fix-350731-998703268-a01e65b3-b3bd-4cc0-b256-7b44e6d61bf2 branch November 4, 2025 01:06
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Comment on lines +470 to +474
MATCH (f:File)
WHERE ($repo_id IS NULL OR f.repoId = $repo_id)
AND (toLower(f.path) CONTAINS toLower($query_text)
OR toLower(f.lang) CONTAINS toLower($query_text)
OR ($query_text IN f.content AND f.content IS NOT NULL))
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P1 Badge Replace illegal IN check in fulltext query

The full‑text search clause uses ($query_text IN f.content AND f.content IS NOT NULL) to match file contents. In Neo4j, IN expects the right operand to be a list, so when f.content is a string (as inserted by the ingestor) the query fails with a type mismatch rather than returning results. Both /graph/related and /context/pack depend on this method, so any repository with stored content will cause these endpoints to return 500 errors. Use toLower(f.content) CONTAINS toLower($query_text) or another string predicate instead.

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Comment on lines +19 to +23
if target_dir is None:
target_dir = tempfile.mkdtemp(prefix="repo_")

cmd = ["git", "clone", "--depth", "1", "-b", branch, repo_url, target_dir]
result = subprocess.run(
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P1 Badge Avoid cloning into a pre‑created temp directory

The remote ingest path calls git_utils.clone_repo, which generates a target directory with tempfile.mkdtemp and then passes that directory to git clone. git clone expects the destination path not to exist, so cloning into an already-created directory fails with fatal: destination path … already exists and is not an empty directory, causing every remote repository ingestion to error out. Create the parent temp dir and let git clone create the repo subdirectory (e.g. using tempfile.mkdtemp for parent and os.path.join(parent, repo_name) or tempfile.mkdtemp with dir and removing before cloning).

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