Files
AgentLab/backend/app/api/datasources.py
T
ThearchyHelios 2cdbf9a733 Excel 导入改造期 3:网格交互、自助修复、按期累积——每月的报表可以累积成一份跨月的表,漂移了点修复按钮就能接着导入,网格上框一块就能写进配方,版本页可以回滚、移除一期、清除原件
按期累积(新 recipe_accumulate;table_versions 扩展)
- 按统计期出的交叉表报表首次导入时默认「按期累积」,由人确认;一期一个构建,两期及以上物化成一份新的 SQLite 快照,不用视图
- 统计期完全相同要勾「替换该期」,部分重叠拒收,中间有空缺要确认;物化前逐期核对库哈希和行号,并集上另加行数守恒、主键唯一、日期落在所属统计期三条核对
- 配方演进分三档:新增列(早期各期为空值)、退役的列和表保留旧值(只在这次才退役时要勾)、不兼容变化只能显式「重新开始累积」
- 快照 id 在累积时含目标配方和模式;同样的输入物化两次库哈希相同,同一文件换名再传直接复用
- 说明按期合并,任何一期没核对过就不写「已核对」;各期维度取值不同、退役列、合计表都有提示,经过数字检查

修复按钮(新 recipe_fixes;执行器给问题带结构化参数)
- 加入标签、移除标签、声明为合计行、分段标题改名、编辑恒等式成员、按锚点忽略行/列/区域外文字、声明占位符、声明隐藏行处理、工作表改名
- 服务端算补丁,先预览新旧配方对照、再应用,可以撤销;补丁封闭,不引入正则、自由文本常量和写死坐标;修复进确认清单
- 只改分段标题、新标题仍含原来选的词时沿用已确认的常量,不算破坏性变更;修复后只查改动过的段的认领,没改的关系交给试运行核对

框选转锚点(新 recipe_select)
- 网格上框选(鼠标、键盘、区域输入),按八种用途换算成按文字认的锚点,立刻干跑比对;配方里不存坐标,泛化不了时列出原因
- 整张表挪位后同一配方照样认得;框进合计行、夹着小计、表下说明都有明确的处理

确认与对照(recipe_confirm、recipe_diff、新 recipe_compare)
- 改配方后确认清单只列有变化的项(同时按本期数据比较),不用每修一次重勾十来项;新旧配方对照界面;按规则重新起草并把名字对齐到现行配方
- 改配方后已体现在配方里的回答保留,矛盾的列出来请人重答
- 「排除的行」写进回执和导入清单:隐藏行、跳过的空行、按配方忽略的行、停止后的文字行、只核对不另存的合计行

版本页(新 source_versions、api/source_versions;前端 VersionsDialog)
- 快照与导入记录列表、启用旧版本(可写理由)、查看清单、移除一期、作废接受、清除原件;写操作带界面看到的当前版本,并发改动回 409,不静默丢期
- 除当前版本和被运行引用的版本外,再保留最近 3 个版本供回滚;遮罩列丢失要明确确认

期 1、期 2 遗留
- 重传撞上被改过的构建文件:能用本次上传恢复就隔离旧文件再恢复,否则回 409,不再是 500
- 跳过空行的列表不再把表下隔一行的说明读成数据;不像说明的单格行要人确认;受影响的配方构建换 id
- 版本存储加进程级文件锁:第二个进程拿不到锁时不清理、不回收,写操作回 503(部署本来就是单进程)
2026-10-02 07:38:44 +08:00

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"""数据源的增删改查、连接测试、结构探查。
密码的处理规则和 Provider 完全一致(app/api/settings.py):入库加密、
出站只给掩码、PATCH 时不传表示不动、传空串表示清空。
"""
from __future__ import annotations
import logging
from datetime import datetime, timezone
from typing import Any
from fastapi import APIRouter, Depends, File, Form, Header, HTTPException, Query, Request, UploadFile
from fastapi.encoders import jsonable_encoder
from fastapi.responses import JSONResponse
from pydantic import BaseModel, Field
from sqlalchemy import select
from sqlalchemy.ext.asyncio import AsyncSession
from app.api import health
from app.api.coded import CodedHTTPException
from app.api.runs import actor_of
from app.core.errors import AUTH, NETWORK, TIMEOUT, classify, explain, raw
from app.core.config import settings
from app.core.crypto import encrypt, mask
from app.data import introspect as introspect_mod
from app.data import table_versions
from app.data.engine import (
MASK_COLUMNS_OPTION, MAX_QUERY_TIMEOUT_S, QUERY_TIMEOUT_OPTION, SUPPORTED_KINDS, SnapshotTampered, build_url,
engine_args, engines, mask_columns_problem, query_timeout_problem,
)
from app.db.base import get_session, new_id
from app.db.models import DataSource, ImportStaging, SourceSnapshot, TableImport, TableRecipe
from app.tools.datasource import tool_names
router = APIRouter(prefix="/api/datasources", tags=["datasources"])
logger = logging.getLogger(__name__)
# 名字会成为工具名的一部分(db_query__<name>),而模型的 function name 只认
# ASCII。所以这里收紧成 slug,中文说明放 description 字段。
_NAME_PATTERN = r"^[a-z][a-z0-9_]{0,40}$"
class DataSourceIn(BaseModel):
name: str = Field(pattern=_NAME_PATTERN,
description="英文标识,会成为工具名的一部分,如 sales")
kind: str
host: str | None = None
port: int | None = None
database: str | None = None
username: str | None = None
password: str | None = None
options: dict[str, Any] = Field(default_factory=dict)
readonly: bool = True
description: str = ""
enabled: bool = True
class DataSourcePatch(BaseModel):
kind: str | None = None
host: str | None = None
port: int | None = None
database: str | None = None
username: str | None = None
password: str | None = None # 空串=清空;不传=不动
options: dict[str, Any] | None = None
readonly: bool | None = None
description: str | None = None
enabled: bool | None = None
class DataSourceOut(BaseModel):
id: str
name: str
kind: str
host: str | None
port: int | None
database: str | None
username: str | None
options: dict[str, Any]
readonly: bool
description: str
enabled: bool
password_masked: str = ""
has_password: bool = False
table_count: int = 0
schema_synced_at: str | None = None
#: 上次探查为什么没拿到表。"还没探查"和"探查失败了"是两回事:
#: 前者去点一下按钮就行,后者点了也没用,得先解决超时或者换 schema
schema_error: str = ""
#: 这台服务器上还有哪些库/schema 可选。探不到表时它就是下一步的线索
available_schemas: list[str] = Field(default_factory=list)
tools: list[str] = Field(default_factory=list)
#: 缓存是按哪个 schema 探的:"" 是默认 schema,None 是没有缓存(或老缓存没记)。
#: 和 options.schema 对不上时,助手看到的结构不是配置里那个 schema 的
cached_schema: str | None = None
#: 最近一次测连接(见 app/api/health.py)。没测过、或者连接配置改过之后都是 None
last_checked_at: str | None = None
last_check_ok: bool | None = None
last_latency_ms: int | None = None
last_error: str | None = None
#: upload:上传的表格(连接信息由系统维护,不能手改、不能重新探查);manual:手工登记的连接
origin: str = "manual"
#: 上传表格当前启用的版本:{id, created_at, file_name, raw_state}。手工源恒为 None
current_snapshot: dict[str, Any] | None = None
#: simple:简单导入的上传表格;recipe:按配方导入;手工源为 None
import_mode: str | None = None
#: 按配方导入的源当前启用的配方:{id, seq, origin, activated_at, signed_by}
current_recipe: dict[str, Any] | None = None
#: 这个源最近一个未结束的导入暂存区:{id, kind, status, created_at}
open_staging: dict[str, Any] | None = None
def _cached_schema(cache: dict[str, Any]) -> str | None:
if not cache or "schema" not in cache:
return None
return str(cache.get("schema") or "")
def _import_mode(row: DataSource) -> str | None:
if row.current_recipe_id:
return "recipe"
return "simple" if _is_upload(row) else None
def _to_out(row: DataSource, snapshot: dict[str, Any] | None = None,
recipe_info: dict[str, Any] | None = None) -> DataSourceOut:
cache = row.schema_cache or {}
tables = cache.get("tables") or {}
recipe_info = recipe_info or {}
return DataSourceOut(
origin=row.origin or "manual", current_snapshot=snapshot,
import_mode=_import_mode(row), current_recipe=recipe_info.get("current_recipe"),
open_staging=recipe_info.get("open_staging"),
cached_schema=_cached_schema(cache),
schema_error=str(cache.get("error") or "") if cache.get("failed") else "",
available_schemas=list(cache.get("available_schemas") or []),
id=row.id, name=row.name, kind=row.kind, host=row.host, port=row.port,
database=row.database, username=row.username, options=row.options or {},
readonly=row.readonly, description=row.description, enabled=row.enabled,
password_masked=mask(row.password),
has_password=bool(row.password),
table_count=len(tables),
schema_synced_at=row.schema_synced_at.isoformat() if row.schema_synced_at else None,
tools=tool_names(row),
**health.fields(row.last_check),
)
def _connection(source: Any) -> str | None:
"""连接配置的指纹:驱动实际拿到的连接串和参数。配置拼不出连接串时为 None。
按连接串比而不是按字段比:Oracle 的服务名填在「数据库」还是 options 里,
连的是同一个库;探查用的 schema 不进连接串,改它也不影响连不连得上。
"""
try:
url, extra = engine_args(source)
except Exception: # noqa: BLE001 - 拼不出来就谈不上「测的是同一份」
return None
return health.fingerprint("datasource", url, extra)
def _probe_record(result: dict[str, Any]) -> dict[str, Any]:
return health.record(result.get("ok"), result.get("elapsed_ms"), result.get("error"))
async def _get_or_404(session: AsyncSession, source_id: str) -> DataSource:
row = await session.get(DataSource, source_id)
if not row:
raise HTTPException(404, "数据源不存在,可能已被删除")
return row
def _is_upload(row: DataSource) -> bool:
return (row.origin or "manual") == "upload"
async def _snapshot_infos(session: AsyncSession, rows: list[DataSource]) -> dict[str, dict[str, Any]]:
"""各上传源当前版本的摘要:{源 id: {id, created_at, file_name, raw_state, mode, periods, period_start,
period_end, activated_at}}。两次查询取齐,不逐个查。
文件名、原件状态取最近的那一期(按统计期排在最后的);期 3 按期累积时一个快照有多期,卡片另写模式、期数、
统计期范围。activated_at 是最近一次成为当前版本的时刻:回滚之后卡片写「…启用」,不再写快照当初的导入时间
(期 3 之前的快照没有这一列,按 created_at)。"""
wanted = {r.current_snapshot_id: r.id for r in rows if _is_upload(r) and r.current_snapshot_id}
if not wanted:
return {}
snaps = list((await session.execute(
select(SourceSnapshot).where(SourceSnapshot.id.in_(list(wanted)))
)).scalars())
members = {str(x) for s in snaps for x in s.imports or []}
imports = {
i.id: i for i in (await session.execute(
select(TableImport).where(TableImport.id.in_(list(members)))
)).scalars()
} if members else {}
out: dict[str, dict[str, Any]] = {}
for snap in snaps:
mine = [imports[str(x)] for x in snap.imports or [] if str(x) in imports]
imp = mine[-1] if mine else None
starts = [i.period_start for i in mine if i.period_start]
ends = [i.period_end for i in mine if i.period_end]
out[snap.source_id] = {
"id": snap.id,
"created_at": snap.created_at.isoformat() if snap.created_at else None,
"file_name": imp.file_name if imp else "",
"raw_state": imp.raw_state if imp else "absent",
"mode": snap.mode or ("replace" if imp is not None and imp.recipe_id else None),
"periods": len(snap.imports or []),
"period_start": min(starts) if starts else None,
"period_end": max(ends) if ends else None,
"activated_at": _iso(snap.activated_at or snap.created_at),
}
return out
def _iso(v: datetime | None) -> str | None:
return v.isoformat() if v else None
async def _recipe_infos(session: AsyncSession, rows: list[DataSource]) -> dict[str, dict[str, Any]]:
"""各源的当前配方摘要和最近一个未结束的暂存区:{源 id: {current_recipe, open_staging}}。两次查询取齐。"""
out: dict[str, dict[str, Any]] = {}
recipe_ids = {r.current_recipe_id: r.id for r in rows if r.current_recipe_id}
if recipe_ids:
for rec in (await session.execute(
select(TableRecipe).where(TableRecipe.id.in_(list(recipe_ids)))
)).scalars():
sid = recipe_ids.get(rec.id)
if sid is not None:
out.setdefault(sid, {})["current_recipe"] = {
"id": rec.id, "seq": rec.seq, "origin": rec.origin,
"activated_at": _iso(rec.activated_at), "signed_by": rec.signed_by,
}
ids = [r.id for r in rows if _is_upload(r)]
if ids:
for st in (await session.execute(
select(ImportStaging).where(
ImportStaging.source_id.in_(ids), ImportStaging.status.in_(table_versions.STAGING_OPEN),
).order_by(ImportStaging.created_at)
)).scalars():
# 按创建时间升序,后面的覆盖前面的:留下最近的那一个
out.setdefault(st.source_id, {})["open_staging"] = {
"id": st.id, "kind": st.kind, "status": st.status, "created_at": _iso(st.created_at),
}
return out
async def _out(session: AsyncSession, row: DataSource) -> DataSourceOut:
return _to_out(row, (await _snapshot_infos(session, [row])).get(row.id),
(await _recipe_infos(session, [row])).get(row.id))
#: 上传源上由系统维护的字段:连接一律从快照解析,database 只作显示
_UPLOAD_LOCKED = {
"kind": "类型", "host": "主机", "port": "端口", "database": "数据库文件路径",
"username": "用户名", "password": "密码", "readonly": "只读",
}
#: 手工源指向上传目录时的拒收原因:创建、修改时 422,测连接时作为失败原因交回
_UPLOAD_DIR_REFUSED = "数据库文件路径不能指向上传表格的存放目录。上传的表格请通过「上传表格」更新"
#: 升级前就指向上传目录的手工源(启动时已强制只读)想改回可写时的拒收原因
_UPLOAD_DIR_READONLY = ("这个数据库文件位于上传表格的存放目录,只能以只读方式连接。"
"上传的表格请通过「上传表格」更新")
#: 手工源指向 AgentLab 自己的数据文件时的拒收原因:创建、修改时 422,测连接时作为失败原因交回
_APP_FILES_REFUSED = ("数据库文件路径不能指向 AgentLab 自己的数据文件(应用数据库、运行检查点、密钥、工件等)。"
"请填写存放业务数据的 SQLite 文件")
def _in_upload_dir(kind: str | None, database: str | None) -> bool:
return (kind or "").lower() == "sqlite" and table_versions.under_uploads(database)
def _in_app_files(kind: str | None, database: str | None) -> bool:
return (kind or "").lower() == "sqlite" and table_versions.reaches_app_files(database)
def _reserved_reason(kind: str | None, database: str | None) -> str | None:
"""手工登记的 SQLite 源不许指向的位置:返回拒收原因,没问题时返回 None。
上传目录归版本底座管,手工源指过去会绕开只读和版本;应用自己的数据文件(元数据库等)登记成
数据源,经审批的一条 UPDATE 就能改掉上传源的连接字段和快照登记。两处都按文件身份判断。
"""
if _in_app_files(kind, database):
return _APP_FILES_REFUSED
if _in_upload_dir(kind, database):
return _UPLOAD_DIR_REFUSED
return None
def _refuse_reserved(kind: str | None, database: str | None) -> None:
reason = _reserved_reason(kind, database)
if reason:
raise HTTPException(422, reason)
def _locked_changes(row: DataSource, data: dict[str, Any]) -> list[str]:
"""上传源上这次要改的、由系统维护的连接字段(给人看的名字)。
原样带回的值不算修改(编辑表单会把整份配置一起提交);密码只看是否填了新的——上传源本来就没有密码。
修改接口和测连接共用:测连接说「能连」、保存却被拒,两边就对不上了。
"""
return [label for key, label in _UPLOAD_LOCKED.items() if key in data and (
bool(data[key]) if key == "password" else data[key] != getattr(row, key)
)]
def _locked_refusal(changed: list[str]) -> str:
return f"上传的表格由系统维护连接信息,不能修改「{'」「'.join(changed)}」。如需更新数据,请重新上传"
@router.get("", response_model=list[DataSourceOut])
async def list_sources(session: AsyncSession = Depends(get_session)) -> list[DataSourceOut]:
rows = list((await session.execute(select(DataSource).order_by(DataSource.name))).scalars())
snaps = await _snapshot_infos(session, rows)
recipes = await _recipe_infos(session, rows)
return [_to_out(r, snaps.get(r.id), recipes.get(r.id)) for r in rows]
#: 每种库都有的「查询时限」。数据库按它自己停下语句,不只是后端不再等
_TIMEOUT_FIELD = {
"key": QUERY_TIMEOUT_OPTION, "label": "查询时限(秒)", "placeholder": "30",
"help": f"单条查询的最长执行时间,超时后由数据库终止;留空为 30 秒,最多 {MAX_QUERY_TIMEOUT_S} 秒",
}
#: 证据面板展示原始行时遮掉的列。每种库都有:遮罩只看查询结果的列名,和方言无关
_MASK_FIELD = {
"key": MASK_COLUMNS_OPTION, "label": "遮罩的列", "placeholder": "phone, email",
"help": "证据面板展示查询结果的原始行时,这些列显示为「已遮罩」。"
"遮罩只减少暴露,不是安全边界:完整快照仍可通过工件获取,SQL 中给列起别名也可绕过",
}
def _refuse_bad_options(options: dict[str, Any] | None) -> None:
problem = query_timeout_problem(options) or mask_columns_problem(options)
if problem:
raise HTTPException(422, problem)
@router.get("/kinds")
async def list_kinds() -> dict[str, Any]:
"""支持哪些数据库,以及各自需要填什么——前端表单据此渲染。
hint 只用表单上看得见的说法。以前写的是「在 options 里给 service_name」
「options 可填 charset」,表单上根本没有叫 options 的地方。advanced 列出
「高级连接参数」里常用的键,hint 提到的每个键都在那里找得到。
"""
return {
"kinds": [
{"value": "mysql", "label": "MySQL / MariaDB", "default_port": 3306,
"needs": ["host", "database", "username", "password"],
"hint": "字符集默认为 utf8mb4;如需更改,请在「高级连接参数」中添加 charset",
"advanced": [{"key": "charset", "label": "字符集", "placeholder": "utf8mb4"},
_TIMEOUT_FIELD, _MASK_FIELD]},
{"value": "postgres", "label": "PostgreSQL", "default_port": 5432,
"needs": ["host", "database", "username", "password"],
"hint": "「schema」留空时使用 public",
"advanced": [_TIMEOUT_FIELD, _MASK_FIELD]},
{"value": "oracle", "label": "Oracle", "default_port": 1521,
"needs": ["host", "username", "password"],
"hint": "service_name 与 SID 二选一,通常填写 service_name;无需安装 Instant Client。"
"若只读账号名下没有对象,请在「schema」中填写数据所在的 schema(如 ANALYTICS)",
"advanced": [
{"key": "service_name", "label": "service_name", "placeholder": "ORCLPDB1",
"help": "与 SID 二选一"},
{"key": "sid", "label": "SID", "placeholder": "ORCL", "help": "与 service_name 二选一"},
_TIMEOUT_FIELD,
_MASK_FIELD,
]},
{"value": "sqlite", "label": "SQLite(文件)", "default_port": None,
"needs": ["database"], "hint": "「数据库文件路径」请填写 .db 文件的绝对路径",
"advanced": [_TIMEOUT_FIELD, _MASK_FIELD]},
],
"supported": list(SUPPORTED_KINDS),
}
def _oracle_target(options: dict[str, Any] | None) -> tuple[str, str]:
opts = options or {}
return str(opts.get("service_name") or "").strip(), str(opts.get("sid") or "").strip()
def _settle_oracle(
row: DataSource, old_options: dict[str, Any] | None, old_database: str | None
) -> None:
"""Oracle 的 service_name / SID 只存一处:options 里,database 清空。
引擎按 `options.service_name or database` 取服务名,两者都空才看 sid。老数据
把服务名存在 database,于是新表单切到 SID 存下去会被它压住、悄悄无视;旧表单
把 service_name 框绑在 database 上、保存时又原样带回 options,新填的值同样
被压住。两处都能存,就总有一处在暗中说了算,所以存的时候收成一处:这次
改了哪一处就听哪一处;都没改就照引擎原来的取法,连的还是同一个库。
"""
if (row.kind or "").lower() != "oracle":
return
opts = {k: v for k, v in (row.options or {}).items()
if k not in ("service_name", "sid") or str(v or "").strip()}
database = (row.database or "").strip()
picked = any(_oracle_target(opts)) and _oracle_target(opts) != _oracle_target(old_options)
typed = bool(database) and database != (old_database or "").strip()
if not picked and (typed or (database and "service_name" not in opts)):
opts["service_name"] = database
opts.pop("sid", None)
row.options = opts
row.database = None
@router.post("", response_model=DataSourceOut, status_code=201)
async def create_source(
payload: DataSourceIn, session: AsyncSession = Depends(get_session)
) -> DataSourceOut:
if payload.kind not in SUPPORTED_KINDS:
raise HTTPException(400, f"不支持「{payload.kind}」类型的数据库,目前支持:{'、'.join(SUPPORTED_KINDS)}")
exists = (await session.execute(
select(DataSource).where(DataSource.name == payload.name)
)).scalar_one_or_none()
if exists:
raise HTTPException(409, f"已存在名为「{payload.name}」的数据源,请换一个标识")
_refuse_bad_options(payload.options)
_refuse_reserved(payload.kind, payload.database)
row = DataSource(
**payload.model_dump(exclude={"password"}),
password=encrypt(payload.password),
)
_settle_oracle(row, None, None)
# 表单里刚测过这份配置:保存下来就带着那次结果,不必再测一遍
row.last_check = health.draft_result(_connection(row))
session.add(row)
await session.commit()
await session.refresh(row)
return _to_out(row)
@router.patch("/{source_id}", response_model=DataSourceOut)
async def update_source(
source_id: str, payload: DataSourcePatch, session: AsyncSession = Depends(get_session)
) -> DataSourceOut:
row = await _get_or_404(session, source_id)
data = payload.model_dump(exclude_unset=True)
if _is_upload(row):
# 上传源的连接由版本底座维护(见 _locked_changes)
changed = _locked_changes(row, data)
if changed:
raise HTTPException(422, _locked_refusal(changed))
for key in _UPLOAD_LOCKED:
data.pop(key, None)
if data.get("options") is not None:
# 上传库只有一个 main:指定 schema 会让探查去找不存在的对象。原样带回的不算修改,摘掉即可
options = dict(data["options"])
wanted = str(options.pop("schema", None) or "").strip()
if wanted and wanted != str((row.options or {}).get("schema") or "").strip():
raise HTTPException(422, "上传的表格只有一个库,不能指定 schema。如需更新数据,请重新上传")
data["options"] = options
elif "kind" in data or "database" in data:
_refuse_reserved(data.get("kind", row.kind), data.get("database", row.database))
elif _in_app_files(row.kind, row.database):
# 升级前登记的、指向应用自己数据文件的源:启动时已停用(table_versions.startup)。
# 这类登记没有正当用途,除了改路径和删除,别的修改(重新启用、改回可写……)一律拒
raise HTTPException(422, _APP_FILES_REFUSED)
elif data.get("readonly") is False and row.readonly and _in_upload_dir(row.kind, row.database):
# 升级前就指向上传目录的手工源:启动时已强制只读(table_versions.startup),不许再改回可写
raise HTTPException(422, _UPLOAD_DIR_READONLY)
if "options" in data:
_refuse_bad_options(data["options"])
if "password" in data:
# 空串表示清空,非空表示换新的
data["password"] = encrypt(data["password"]) if data["password"] else None
old_options, old_database = dict(row.options or {}), row.database
before = _connection(row)
for key, value in data.items():
setattr(row, key, value)
_settle_oracle(row, old_options, old_database)
after = _connection(row)
if after != before:
# 连的已经不是测过的那个了:旧结果作废,表单里测过这一份的话换成那一次
row.last_check = health.draft_result(after)
await session.commit()
await session.refresh(row)
# 连接参数可能变了,旧连接池不能再用——否则改完密码还在用旧连接,很难排查
await engines.invalidate(source_id)
return await _out(session, row)
@router.delete("/{source_id}", status_code=204)
async def delete_source(source_id: str, session: AsyncSession = Depends(get_session)) -> None:
row = await _get_or_404(session, source_id)
# 上传源的导入记录置 retired 留作审计;库文件和原件交给回收,被运行引用的版本会保留。只读进程(没拿到
# 版本存储的守卫)不删上传源:retire_source 要删隔离文件、放弃暂存区(第 8 节遗留项 5)。
# 手工登记的源没有导入记录、配方、暂存区和隔离文件,根本不碰版本存储:不调 retire_source,只读进程里也照常
# 删除(9.1 只要求上传源回 503,评审意见);删完也没有文件可回收
upload = _is_upload(row)
if upload:
try:
await table_versions.retire_source(session, source_id)
except table_versions.StoreUnavailable as e:
raise CodedHTTPException(503, str(e), "store_unavailable") from e
await session.delete(row)
await session.commit()
await engines.invalidate(source_id)
if upload:
try:
await table_versions.gc(session)
except Exception: # noqa: BLE001 - 回收失败不影响删除,重启或下次上传时再收
logger.exception("删除数据源后的回收失败")
#: 测连接最多等多久。内网库防火墙丢包时驱动默认要等一分钟,弹窗里干转一分钟
#: 等于没有反馈
_TEST_TIMEOUT = 15
_WRONG_PASSWORD = ("用户名或密码错误", "请核对「用户名」和「密码」;编辑时密码留空表示沿用已保存的密码")
_CHECK_HOST = "请检查「主机」和「端口」;内网数据库请确认本机可以访问(防火墙、VPN)"
def _explain_connect(e: BaseException, kind: str) -> tuple[str, str]:
"""连库失败的常见原因。驱动的原文九成能定位问题,但得先翻译成表单上的说法。"""
low = str(e).lower()
if any(s in low for s in ("password authentication failed", "access denied", "ora-01017",
"invalid username/password", "(1045")):
return _WRONG_PASSWORD
if "ora-12514" in low:
return "Oracle 无法识别该 service_name", "请核对 service_name;部分旧版数据库只提供 SID,可改用 SID 后重试"
if "ora-12505" in low:
return "Oracle 无法识别该 SID", "请核对 SID,或改用 service_name"
if "service_name 或 sid" in low:
return "未填写 service_name 或 SID", "请在「service_name」中填写,或改用 SID"
if "unknown database" in low or "(1049" in low or (
"does not exist" in low and "database" in low
):
return "服务器上不存在该数据库", "请核对「数据库」一栏"
if "unable to open database file" in low:
return "无法打开该数据库文件", "请确认路径是绝对路径、文件存在,且服务端进程有读取权限"
if "file is not a database" in low:
return "该文件不是 SQLite 数据库", "请确认路径指向的是 .db 文件"
if "no module named" in low:
return "服务端未安装该数据库的驱动", "请执行 pip install 'agentlab-backend[db]',然后重启服务端"
# 下面按错误类别换成数据库的说法:通用的那几句说的是 API(API Key、Base URL),这里是数据库。
# 按类别判断,不比较 explain 的文字——那句话改一个字,这里就再也对不上
category = classify(e)
if category == AUTH:
return _WRONG_PASSWORD
if category == NETWORK:
return "网络不通,或数据库服务未启动", _CHECK_HOST
if category == TIMEOUT:
return "数据库长时间没有响应", _CHECK_HOST
reason, hint = explain(e)
if kind == "sqlite" and not hint:
hint = "请检查数据库文件的路径"
return reason, hint
def _safe_url(source: Any) -> str:
try:
return build_url(source) # 遮掉密码的版本
except Exception: # noqa: BLE001 - 连串都拼不出来时,原因已经在 error 里了
return ""
def _missing_sqlite_file(source: Any) -> tuple[str, str, str] | None:
"""SQLite 的路径指向不存在的文件时,返回 (reason, hint, detail)。
可写模式下 SQLite 连一个不存在的路径会当场建一个空库:测试说「连得上」,
连的却是个空文件,「只测不存」的接口还往磁盘上写了东西。没填路径时连的
是内存库,一样是假的「连得上」。按 SQLite 自己的解析方式判断(不展开 ~)。
"""
from pathlib import Path
if (source.kind or "").lower() != "sqlite":
return None
path = source.database or ""
if not path.strip():
return "未填写数据库文件路径", "请在「数据库文件路径」中填写 .db 文件的绝对路径", "database 为空"
if path == ":memory:" or Path(path).is_file():
return None
return ("无法打开该数据库文件",
"该路径下没有文件。请确认路径是绝对路径且文件存在(~ 不会被展开)",
f"文件不存在:{path}")
async def _probe(source: Any, *, cached: bool) -> dict[str, Any]:
"""真连一次。cached=False 用一次性的 engine,测完就扔——草稿不该进连接池缓存,
否则改完配置再测,拿到的还是上一版的连接。"""
import asyncio
import time
from sqlalchemy import text
from sqlalchemy.ext.asyncio import create_async_engine
from sqlalchemy.pool import NullPool
started = time.perf_counter()
missing = _missing_sqlite_file(source)
if missing:
reason, hint, detail = missing
return {"ok": False, "error": f"连接失败:{reason}", "hint": hint, "detail": detail,
"elapsed_ms": 0, "url": _safe_url(source)}
engine = None
try:
if cached:
engine = await engines.get(source)
else:
url, extra = engine_args(source)
engine = create_async_engine(url, poolclass=NullPool, **extra)
async with asyncio.timeout(_TEST_TIMEOUT):
async with engine.connect() as conn:
oracle = (source.kind or "").lower() == "oracle"
await conn.execute(text("SELECT 1 FROM DUAL" if oracle else "SELECT 1"))
return {
"ok": True,
"elapsed_ms": int((time.perf_counter() - started) * 1000),
"url": _safe_url(source),
}
except SnapshotTampered as e:
# 快照文件和登记的哈希对不上:原话就是原因,不翻译成泛泛的连接错误
return {"ok": False, "error": str(e), "hint": "请重新上传这份表格", "detail": "",
"elapsed_ms": int((time.perf_counter() - started) * 1000), "url": _safe_url(source)}
except Exception as e: # noqa: BLE001
reason, hint = _explain_connect(e, (source.kind or "").lower())
return {
"ok": False,
"error": f"连接失败:{reason}",
"hint": hint,
"detail": raw(e),
"elapsed_ms": int((time.perf_counter() - started) * 1000),
"url": _safe_url(source),
}
finally:
if engine is not None and not cached:
await engine.dispose()
class DataSourceTestIn(BaseModel):
"""一份还没保存(或改了还没保存)的配置。带 id 表示在编辑已有的那个。"""
id: str | None = None
name: str = ""
kind: str
host: str | None = None
port: int | None = None
database: str | None = None
username: str | None = None
password: str | None = None # 编辑时留空=沿用已保存的
options: dict[str, Any] = Field(default_factory=dict)
readonly: bool = True
def _draft_source(payload: DataSourceTestIn, saved: DataSource | None) -> DataSource:
"""拼一个不进会话的临时数据源,只拿来连一下。
编辑时密码框留空表示不改——测连接也得用存着的那个,否则改个端口想测一下,
只会得到一句"密码不对"。
"""
if payload.password:
password = encrypt(payload.password)
else:
password = saved.password if saved else None
return DataSource(
name=payload.name or (saved.name if saved else "draft"),
kind=payload.kind, host=payload.host, port=payload.port, database=payload.database,
username=payload.username, password=password, options=dict(payload.options or {}),
readonly=payload.readonly,
)
@router.post("/test")
async def test_draft(
payload: DataSourceTestIn, session: AsyncSession = Depends(get_session)
) -> dict[str, Any]:
"""测一份没保存的配置,不落库。
以前只能测已存在的数据源:填错一项要保存→关弹窗→点测试→看提示→再打开改,
接内网 Oracle 这类填错一个字段就连不上的东西,来回四五趟。
"""
if payload.kind not in SUPPORTED_KINDS:
return {"ok": False, "error": f"不支持「{payload.kind}」类型的数据库",
"hint": f"目前支持:{'、'.join(SUPPORTED_KINDS)}", "detail": "", "elapsed_ms": 0, "url": ""}
saved = await session.get(DataSource, payload.id) if payload.id else None
if saved is not None and _is_upload(saved):
# 上传源:连接字段由系统维护。改了就和保存一样拒;没改,测的就是它当前版本的快照,
# 不拿表单里的路径去连——否则带上一个上传源的 id,就能把上传目录里任何文件拿来试
changed = _locked_changes(saved, payload.model_dump(exclude_unset=True, include=set(_UPLOAD_LOCKED)))
if changed:
return _refused(_locked_refusal(changed))
return await _test_saved(session, saved)
reason = _reserved_reason(payload.kind, payload.database)
if reason:
# 保存时会被拒(_refuse_reserved):测连接不能先报「连接成功」,到保存才说不行
return _refused(reason)
draft = _draft_source(payload, saved)
result = await _probe(draft, cached=False)
last, key = _probe_record(result), _connection(draft)
health.remember_draft(key, last)
if saved is not None and key is not None and key == _connection(saved):
# 编辑框里没改连接、只是再测一次:测的就是已保存的那份
saved.last_check = last
await session.commit()
return result
@router.post("/{source_id}/test")
async def test_source(source_id: str, session: AsyncSession = Depends(get_session)) -> dict[str, Any]:
"""测连接。失败时说清原因和怎么办,驱动的原始报错放在 detail——这类问题九成靠它定位。"""
return await _test_saved(session, await _get_or_404(session, source_id))
def _refused(reason: str) -> dict[str, Any]:
"""不去连就能判定失败的测连接结果(形状和 _probe 的一样)。"""
return {"ok": False, "error": reason, "hint": "", "detail": "", "elapsed_ms": 0, "url": ""}
async def _test_saved(session: AsyncSession, row: DataSource) -> dict[str, Any]:
"""测一个已保存的数据源,结果记进 last_check(提交)。
上传源测的是它当前版本的快照:只读、immutable、建引擎前核对哈希,和查询走同一条路。
拿数据源行本身去连,既不核对哈希(快照被改过也报「连接成功」),还会在连接缓存里留下
一个不带版本、不核对的引擎。手工源指向应用自己的数据文件(升级前登记的)时不去连。
"""
if _is_upload(row):
try:
view = await table_versions.resolve_source(session, row)
except table_versions.SnapshotMissing as e:
result = _refused(str(e))
else:
result = await _probe(view, cached=True)
elif _in_app_files(row.kind, row.database):
result = _refused(_APP_FILES_REFUSED)
else:
result = await _probe(row, cached=True)
row.last_check = _probe_record(result)
await session.commit()
return result
class IntrospectPreview(BaseModel):
"""只看不存的探查结果。缓存、同步时间都没动。"""
dry_run: bool = True
#: 这次探的是哪个 schema,"" 是默认 schema
schema_: str = Field(default="", serialization_alias="schema")
table_count: int = 0
#: 带 schema 前缀的对象全名,最多 200 个(和真探查的上限一样)
tables: list[str] = Field(default_factory=list)
truncated: bool = False
total: int = 0
schema_error: str = ""
available_schemas: list[str] = Field(default_factory=list)
@router.post("/{source_id}/introspect", response_model=DataSourceOut | IntrospectPreview)
async def introspect_source(
source_id: str,
schema: str | None = None,
dry_run: bool = Query(default=False, description="只返回探到的结构,不写缓存"),
session: AsyncSession = Depends(get_session),
) -> DataSourceOut | IntrospectPreview:
"""探查结构并缓存。显式动作,不做后台轮询——生产库不该被实验工具定时扫。
dry_run=true 只看不存:「换个 schema 看看」以前一探就把缓存换掉,用户随后
选了「不改」,助手此刻看到的也已经是另一套表了。
上传的表格不探查:结构在发布那一刻随快照冻结,重新探查只会让缓存和快照对不上。
"""
row = await _get_or_404(session, source_id)
if _is_upload(row):
raise HTTPException(409, "上传的表格无需重新探查,重新上传即可更新")
try:
cache = await introspect_mod.introspect(row, schema=schema)
except Exception as e: # noqa: BLE001
reason, hint = _explain_connect(e, (row.kind or "").lower())
raise HTTPException(400, f"探查表结构失败:{reason}" + (f"。{hint}" if hint else "")) from e
if dry_run:
tables = cache.get("tables") or {}
return IntrospectPreview(
schema_=str(cache.get("schema") or ""),
table_count=len(tables),
tables=[m.get("qualified", n) for n, m in tables.items()],
truncated=bool(cache.get("truncated")),
total=int(cache.get("total") or 0),
schema_error=str(cache.get("error") or "") if cache.get("failed") else "",
available_schemas=list(cache.get("available_schemas") or []),
)
row.schema_cache = cache
# 失败也要把缓存存下来——里面的 available_schemas 正是下一步的线索——
# 但**不能盖上"已同步"的戳**。以前盖了,于是界面显示同步过、工具却说
# "还没探查过",两边都不说真话(run 554a0f92)
if not row.schema_cache.get("failed"):
row.schema_synced_at = datetime.now(timezone.utc)
await session.commit()
await session.refresh(row)
return _to_out(row)
@router.get("/{source_id}/schema")
async def get_schema(source_id: str, table: str | None = None,
session: AsyncSession = Depends(get_session)) -> dict[str, Any]:
"""表结构。上传的表格返回当前快照里冻结的那份——和查询实际用的库是同一个版本。"""
found = await _get_or_404(session, source_id)
try:
row = await table_versions.resolve_source(session, found)
except table_versions.SnapshotMissing as e:
raise HTTPException(409, str(e)) from e
if table:
meta = introspect_mod.find_table(row, table)
return {
"table": table,
# 给模型看的那段文本照旧;界面画表格用下面的结构化字段
"detail": introspect_mod.describe_table(row, table),
"found": meta is not None,
"qualified": meta.get("qualified", table) if meta else None,
"kind": ("view" if meta.get("is_view") else "table") if meta else None,
"comment": meta.get("comment") if meta else None,
"columns": introspect_mod.table_columns(meta) if meta else [],
}
return {
"tables": introspect_mod.table_names(row),
"summary": introspect_mod.summary(row),
"synced_at": row.schema_synced_at.isoformat() if row.schema_synced_at else None,
}
# --------------------------------------------------------------------------
# 上传表格
# --------------------------------------------------------------------------
#: 「数字列混入非数字」的两种处理:reject 拒收并请用户选择;null 非数字的值存空值、列按数字存
_MIXED_CHOICES = ("reject", "null")
def _decision(e: Exception) -> dict[str, Any] | None:
"""解析器要用户先做决定(tabular.NeedsDecision:交叉表、数字列混入非数字)时,取出决定的内容。
NeedsDecision 是 UnsupportedTable 的子类,多带 kind 和 details 两个属性;普通的
UnsupportedTable 没有。按属性认,而不是按类名:接口层只关心「要不要请用户选」。
"""
kind, details = getattr(e, "kind", None), getattr(e, "details", None)
if not kind or not isinstance(details, dict):
return None
return {"kind": kind, "details": jsonable_encoder(details)}
def _table_out(t: dict[str, Any]) -> dict[str, Any]:
"""回执里的一张表。原表头和列名并排回显:表头行取错了(比如文件前两行是标题),当场看得出来。"""
return {
"name": t.get("name"), "sheet": t.get("sheet"), "rows": t.get("rows", 0),
"columns": [
{"name": c.get("name"), "type": c.get("type"), "header": c.get("header")}
for c in t.get("columns") or [] if isinstance(c, dict)
],
"region": t.get("region"),
"unshaped": bool(t.get("unshaped")),
"blank_rows_skipped": t.get("blank_rows_skipped", 0),
# 原样转交解析器给的值,不替它改类型
"columns_trimmed": t.get("columns_trimmed", []),
}
async def read_upload(file: UploadFile) -> bytes:
"""读上传的文件,边读边数,超了立刻停(413 file_too_large)。简单上传和按配方导入共用。
和知识库上传同一套:那个检查拦的是「入库」,不是「占内存」,读完再判等于先把内存吃掉。
"""
limit = settings.max_upload_mb * 1024 * 1024
pieces: list[bytes] = []
total = 0
while piece := await file.read(1024 * 1024):
total += len(piece)
if total > limit:
raise CodedHTTPException(413, f"文件超过 {settings.max_upload_mb} MB", "file_too_large")
pieces.append(piece)
return b"".join(pieces)
@router.post("/upload", response_model=dict, status_code=201)
async def upload_table(
file: UploadFile = File(...),
name: str = Form(...),
description: str = Form(""),
header_row: int = Form(1),
mixed: str = Form("reject"),
raw_mode: bool = Form(False),
session: AsyncSession = Depends(get_session),
) -> Any:
"""把 Excel / CSV 变成一个可以用 SQL 查的数据源。
落成一个 SQLite 库,数据源 kind='sqlite' 指过去。下游一行都不用改——SQL 守卫、
结构探查、db_query__<name> 工具、查询快照进工件库、助手的数据源清单,全都白拿。
这条路存在的理由不是"多支持一种格式":表格传进知识库只能被切块检索,
数字就成了模型从片段里读出来的,而这个项目的地基是"所有算术下沉到
SQL 或口径卡"。表格必须变成表。
**同名就地更新**,不新建。数据源名字会成为工具名(db_query__sales),
而工具名写进了保存过的工作流——重传时另起一个 sales_2 等于悄悄让那些图失效。
每次上传发布成一个新版本(data/table_versions.py):写新文件、最后切指针,
失败时旧版本完整可查;原件按哈希存档,不提供下载。
解析器需要用户先做决定时(交叉表 / 多块结构、数字列混入非数字)回 422,body 里的
decision 说明要选什么;mixed、raw_mode 是用户选完再传回来的答案。
"""
import re as _re
from app.data.tabular import UnsupportedTable
if not _re.match(_NAME_PATTERN, name or ""):
raise HTTPException(
400, "名称必须以小写字母开头,只能包含字母、数字和下划线(名称会成为工具名的一部分)"
)
if mixed not in _MIXED_CHOICES:
raise HTTPException(400, "数字列混入非数字时,只能选择拒收或将非数字的值存为空值")
raw = await read_upload(file)
existing = (await session.execute(
select(DataSource).where(DataSource.name == name)
)).scalar_one_or_none()
# 按配方导入的源:重传要按已确认的配方重放(上传新一期),不能退回简单解析把配方和核对绕过去
if existing is not None and existing.current_recipe_id:
raise CodedHTTPException(409, f"「{name}」按配方导入,请使用「上传新一期」", "recipe_source")
# 同名的只有上传表格可以更新。迁移前的老上传(路径还在上传目录里)也算
if existing is not None and not _is_upload(existing) and not (
existing.kind == "sqlite" and table_versions.under_uploads(existing.database)
):
raise HTTPException(
409, f"已存在名为「{name}」的数据源(非上传表格),请换一个名称"
)
row = existing
if row is None:
# 先不进会话:发布失败时这个源不该被建出来,由 publish_upload 在提交前加入
row = DataSource(id=new_id(), name=name, kind="sqlite", readonly=True,
description=description, origin="upload")
elif description:
row.description = description
try:
result = await table_versions.publish_upload(
session, row, raw, file.filename or name,
header_row=header_row, mixed=mixed, raw_mode=raw_mode,
)
except UnsupportedTable as e:
decision = _decision(e)
if decision is not None:
return JSONResponse(status_code=422, content={"detail": str(e), "decision": decision})
raise HTTPException(400, str(e)) from e
except table_versions.PublishError as e:
logger.error("上传表格「%s」发布失败:%s", name, e)
if e.code == "store_unavailable":
raise CodedHTTPException(503, str(e), "store_unavailable") from e
if e.code == "build_conflict":
# 服务端已有的同版本文件被改过、这次上传也恢复不了:重试也会失败,要管理员处理(第 8 节遗留项 1)
raise CodedHTTPException(409, str(e), "build_conflict") from e
raise HTTPException(500, str(e)) from e
await session.refresh(row)
report = result.report
return {
"source": (await _out(session, row)).model_dump(),
"replaced": existing is not None,
"import_id": result.import_id,
"snapshot_id": result.snapshot_id,
"build_reused": result.build_reused,
# 服务端的同版本数据文件曾被改动,已用本次上传的文件恢复(原文件挪进了隔离区)
"build_restored": result.build_restored,
"skipped_sheets": report.get("skipped_sheets") or [],
"conversions": report.get("conversions") or [],
"warnings": report.get("warnings") or [],
"tables": [_table_out(t) for t in report.get("tables") or [] if isinstance(t, dict)],
}
@router.get("/{source_id}/imports")
async def list_imports(source_id: str, session: AsyncSession = Depends(get_session)) -> list[dict[str, Any]]:
"""上传表格的导入记录,新的在前。手工登记的源没有导入记录,返回空列表。
期 3(P3-SPEC 7.6)补了接受明细、作废记录、导入清单、配方第几版、各表行数、作废接受的预案(revoke_plan),
以及同一份原件在别处的引用(raw_shared_with、raw_open_stagings):清除对话框在提交前就要列出来。"""
from app.data import source_versions
row = await _get_or_404(session, source_id)
rows = list((await session.execute(
select(TableImport).where(TableImport.source_id == source_id).order_by(TableImport.seq.desc())
)).scalars())
return await source_versions.import_records(session, row, rows)
#: 清除原件的理由、署名的字数上限
_PURGE_REASON_MAX = 500
_SIGNED_MAX = 100
@router.post("/{source_id}/imports/{import_id}/purge-raw")
async def purge_raw(
source_id: str, import_id: str, request: Request, x_actor: str | None = Header(default=None),
session: AsyncSession = Depends(get_session),
) -> dict[str, Any]:
"""清除一次导入的原件。导入记录、哈希和库都保留,原件文件删掉,记下时间、署名和理由。
按内容清除:同一份内容可能被别的导入共用(同一个文件传过两次、传给过两个源),清除的
目的是让这份内容从服务器上消失,所以文件照删,那些导入一并标成已清除,回执的
also_purged 逐条列出(期 3 的界面要把它展示出来,不能静默带过)。
期 3:请求体手工读成 dict(评审二-m8:原来用 pydantic,空理由由 FastAPI 自动回 422,响应体不是 {detail, code}),
错误一律带机读码。confirm 键收但不强求(7.7:期 1、期 2 的调用方不带它);带了而不是 true 时拒绝。
"""
from app.data import source_versions
body = await _json_body(request)
row = await _get_or_404(session, source_id)
imp = await session.get(TableImport, import_id)
if imp is None or imp.source_id != source_id:
raise CodedHTTPException(404, "导入记录不存在", "import_not_found")
if "confirm" in body and body.get("confirm") is not True:
raise CodedHTTPException(422, "请在确认框中确认后再清除原件", "confirm_required")
raw_reason = body.get("reason")
reason = raw_reason.strip() if isinstance(raw_reason, str) else ""
if not reason:
raise CodedHTTPException(422, "请填写清除原件的理由", "reason_required")
if len(reason) > _PURGE_REASON_MAX:
raise CodedHTTPException(422, f"理由不能超过 {_PURGE_REASON_MAX} 字", "reason_required")
signed = body.get("signed_by")
signed_by = signed.strip()[:_SIGNED_MAX] if isinstance(signed, str) and signed.strip() else actor_of(x_actor)
if imp.raw_state == "absent":
raise CodedHTTPException(409, "这次导入没有保存原件", "raw_absent")
if imp.raw_state == "purged":
raise CodedHTTPException(409, "这次导入的原件已经清除", "raw_already_purged")
try:
purged = await table_versions.purge_import_raw(session, imp, reason=reason, signed_by=signed_by)
except table_versions.StoreUnavailable as e:
raise CodedHTTPException(503, str(e), "store_unavailable") from e
deleted, others = purged.deleted, purged.others
names = dict((await session.execute(
select(DataSource.id, DataSource.name).where(DataSource.id.in_({o.source_id for o in others}))
)).all()) if others else {}
[record] = await source_versions.import_records(session, row, [imp])
return {
"import": record,
"file_deleted": deleted,
"also_purged": [
{"id": o.id, "source_id": o.source_id, "source_name": names.get(o.source_id),
"seq": o.seq, "file_name": o.file_name}
for o in others
],
# 引用同一份原件、随之一并放弃的未完成导入(暂存区,已清空)
"discarded_stagings": [st.id for st in purged.discarded_stagings],
}
async def _json_body(request: Request) -> dict[str, Any]:
"""JSON 请求体手工读成 dict(空 body 当作 {});不是 JSON 对象回 422 body_invalid(不触发 FastAPI 自带的 422)。"""
raw = await request.body()
if not raw.strip():
return {}
try:
data = await request.json()
except ValueError:
data = None
if not isinstance(data, dict):
raise CodedHTTPException(422, "请求体必须是一个 JSON 对象", "body_invalid")
return data