145 lines
5.4 KiB
Python
145 lines
5.4 KiB
Python
"""Core 模拟库只读 Tool(T-04 · FLOW §2「CoreReadOnlyRepository:持仓/流水/L0」)。
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Tool 定义层(纯查询,无业务流程):customer_id 由调用方(tool_service)
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注入,**不接受 LLM 生成**——归属防线之一(A-01 语义,T-03 之前的止损)。
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注册表 TOOL_REGISTRY 是对话 Tool 的唯一白名单(tool_service 校验)。
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requires_customer:Tool 是否必须绑定会话客户(True → 无归属主体即
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blocked,不触发查询)。风控分支 Tool(C1 chat_tools)注册时对台账类
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统计用 requires_customer=False,复用同一 runner。
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返回值约定:JSON 安全 dict(Decimal→float 两位、datetime/date→isoformat),
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落库 tool_output 与 LLM 上下文共用同一结构,不做第二套序列化。
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"""
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from __future__ import annotations
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import datetime as _dt
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from decimal import Decimal
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from typing import Any, Callable
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from app.repository.core_ro import CoreReadOnlyRepository
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DETAIL_LIMIT = 20 # 明细条数上限(上下文与落库同限,防超长)
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DEFAULT_TRADE_DAYS = 30
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# 持仓拉取上限(SQL 层 LIMIT,防大客户全量拉回;命中上限时 truncated=True)
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HOLDING_FETCH_LIMIT = 500
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# 整数参数取值边界(tool_service 钳制;防 LLM 传超大值拉爆查询)
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INT_PARAM_BOUNDS: dict[str, tuple[int, int]] = {"days": (1, 365)}
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# 各 Tool 允许的可变入参(白名单;customer_id/core_ro 由 runner 注入,禁止入参覆盖)
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TOOL_PARAM_WHITELIST: dict[str, tuple[str, ...]] = {
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"query_customer_profile": (),
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"query_holdings": (),
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"query_recent_trades": ("days",),
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}
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def _now_naive() -> _dt.datetime:
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"""时间窗基准(naive 本地时间)。
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口径:Core 库 core_trade.traded_at 为 DATETIME(3),种子与模拟网关均写入
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naive 本地时间,故此处同用本地时间比较。部署环境时区须与 DB 会话时区一致
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(B8 localtime 挂账项,与本项目其它时间窗统一收敛;届时可只改此函数)。
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"""
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return _dt.datetime.now()
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def _jsonable(value: Any) -> Any:
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"""MySQL 行 → JSON 安全结构(递归;Decimal 两位小数、时间 isoformat)。"""
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if isinstance(value, Decimal):
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return float(round(value, 2))
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if isinstance(value, (_dt.datetime, _dt.date)):
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return value.isoformat()
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if isinstance(value, dict):
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return {k: _jsonable(v) for k, v in value.items()}
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if isinstance(value, (list, tuple)):
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return [_jsonable(v) for v in value]
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return value
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def query_customer_profile(
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customer_id: str, core_ro: CoreReadOnlyRepository | None = None
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) -> dict[str, Any]:
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"""客户档案与风险测评(L0):core_customer + core_customer_risk。"""
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repo = core_ro or CoreReadOnlyRepository()
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row = repo.get_customer_l0(customer_id)
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if row is None:
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return {"found": False, "customer_id": customer_id}
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return {"found": True, **_jsonable(row)}
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def query_holdings(
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customer_id: str, core_ro: CoreReadOnlyRepository | None = None
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) -> dict[str, Any]:
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"""持仓明细(按市值降序)+ 合计(sum_market_value)。
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SQL 层 LIMIT HOLDING_FETCH_LIMIT(T-04 评审 P2):命中上限时 truncated=
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True——此时 total_count/sum_market_value 为"已拉取部分"的统计,摘要会
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显式提示截断,避免静默给出偏小口径。
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"""
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repo = core_ro or CoreReadOnlyRepository()
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# 多取 1 条用于判定是否真被截断(恰好 500 笔不误报)
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rows = repo.list_holdings(customer_id, limit=HOLDING_FETCH_LIMIT + 1)
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truncated = len(rows) > HOLDING_FETCH_LIMIT
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if truncated:
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rows = rows[:HOLDING_FETCH_LIMIT]
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total = sum((r.get("market_value") or 0) for r in rows)
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return {
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"total_count": len(rows),
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"sum_market_value": _jsonable(total),
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"truncated": truncated,
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"items": [_jsonable(r) for r in rows[:DETAIL_LIMIT]],
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}
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def query_recent_trades(
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customer_id: str,
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days: int = DEFAULT_TRADE_DAYS,
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core_ro: CoreReadOnlyRepository | None = None,
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) -> dict[str, Any]:
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"""近 N 天 confirmed 申赎流水(时间升序截断至 DETAIL_LIMIT)。"""
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repo = core_ro or CoreReadOnlyRepository()
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end = _now_naive()
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start = end - _dt.timedelta(days=days)
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rows = repo.list_trades_range(customer_id, start, end)
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total = sum((r.get("amount") or 0) for r in rows)
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return {
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"days": days,
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"total_count": len(rows),
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"sum_amount": _jsonable(total),
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"items": [_jsonable(r) for r in rows[:DETAIL_LIMIT]],
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}
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class ToolSpec(dict):
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"""注册表条目:func + 描述 + 是否必须绑定会话客户。"""
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TOOL_REGISTRY: dict[str, ToolSpec] = {
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"query_customer_profile": ToolSpec(
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func=query_customer_profile,
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description="查询客户档案与风险测评等级(L0)",
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requires_customer=True,
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),
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"query_holdings": ToolSpec(
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func=query_holdings,
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description="查询客户持仓明细与合计市值",
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requires_customer=True,
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),
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"query_recent_trades": ToolSpec(
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func=query_recent_trades,
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description="查询客户近期申赎交易流水",
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requires_customer=True,
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),
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}
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def get_tool(name: str) -> ToolSpec | None:
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"""白名单查找(未知 Tool 一律 None,由 runner 拒绝)。"""
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return TOOL_REGISTRY.get(name)
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def tool_func(name: str) -> Callable[..., dict[str, Any]] | None:
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spec = TOOL_REGISTRY.get(name)
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return spec["func"] if spec else None
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