268 lines
8.3 KiB
Python
268 lines
8.3 KiB
Python
# ============================================================
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# Pi Agent 外向接入 API（moduleId: gateway-agent-api, 可重生 ✅）
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# 方向 A · P1：/api/agent/* 薄适配层。
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# - 目录派生自 tool_runtime 只读白名单 + harness _POWER_MAP P0；
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# - invoke 只直通目录内意图；P1/P2 返回 CONFIRM_REQUIRED，P3 返回 POWER_DENIED；
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# - 所有业务委托 run_tool_async / handle_intent，绝不复制或旁路写路径。
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# ============================================================
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from __future__ import annotations
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import logging
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import uuid
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from typing import Any
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from fastapi import APIRouter
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from fastapi.responses import JSONResponse
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from pydantic import BaseModel, ConfigDict, Field
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from server.contracts import INTERFACE_VERSION
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logger = logging.getLogger(__name__)
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router = APIRouter(prefix="/api/agent", tags=["pi-agent"])
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# P1 agent catalog is an explicit allowlist, not an automatic projection of P0
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# intents: tool_runtime/readonly naming has historically mixed in handlers that
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# write the world, knowledge base, or report files (data.analyze/folder.analyze/
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# report.generate). Keeping the list explicit means a future P0 registration
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# does not silently become reachable by an external read-only agent token.
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_AGENT_CATALOG_INTENTS = frozenset(
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{
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"help",
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"guidance.next",
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"master.query",
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"plan.buckets",
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"plan.rccp",
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"plan.feasibility",
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"plan.inventory",
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"plan.leveling",
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"plan.supply",
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"plan.trace",
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"knowledge.query",
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"scenario.compare",
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"order.pool",
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"conflict.list",
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"flex.capacity",
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"flex.compare",
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"flex.simulate_due",
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"skill.list",
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"query.kpi",
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}
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)
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class AgentInvokeRequest(BaseModel):
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"""Pi Agent 只读意图调用请求（模块级模型，防止 OpenAPI 前向引用失败）。"""
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model_config = ConfigDict(extra="forbid")
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intent: str = Field(min_length=1, max_length=128)
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params: dict[str, Any] = Field(default_factory=dict)
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requestId: str | None = Field(default=None, max_length=128)
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sessionId: str | None = Field(default=None, max_length=128)
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def _parameter_schema() -> dict[str, Any]:
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"""保守意图参数槽：不臆造各意图业务字段，未知键由服务端登记语义处置。"""
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return {
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"type": "object",
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"title": "意图参数",
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"description": "参数透传槽位；多数只读查询可传空对象。服务端对未登记/越权行为 fail closed。",
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"properties": {},
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"additionalProperties": True,
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}
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def _catalog_items() -> list[dict[str, Any]]:
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from server.agent_core import harness
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entries: list[dict[str, Any]] = []
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for name in sorted(_AGENT_CATALOG_INTENTS):
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power = harness.power_of(name)
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entries.append(
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{
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"name": name,
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"power": power,
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"description": harness._POLICY_DESC.get(
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name, "Pi Agent 只读 APS 查询/分析意图"
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),
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"readOnly": True,
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"parameters": _parameter_schema(),
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}
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)
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return entries
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def _catalog_map() -> dict[str, dict[str, Any]]:
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return {item["name"]: item for item in _catalog_items()}
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def _not_found(message: str) -> JSONResponse:
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return JSONResponse(
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status_code=404,
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content={
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"ok": False,
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"error": {"code": "INTENT_NOT_FOUND", "message": message},
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},
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)
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def _deny(
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store: Any,
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*,
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intent: str,
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power: str,
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actor: str,
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code: str,
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message: str,
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request_id: str,
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status_code: int,
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) -> JSONResponse:
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try:
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from server.agent_core.audit import write_audit
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write_audit(
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store.data,
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store.next_id,
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actor=actor,
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category="AGENT",
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action="agent.invoke.denied",
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target={"type": "INTENT", "id": intent},
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power=power,
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rationale={
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"reason": code,
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"requestId": request_id,
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"source": "pi-agent-gateway",
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},
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result="DENIED",
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)
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store.save()
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except Exception:
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logger.warning("agent invoke denied audit failed for %s", intent, exc_info=True)
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return JSONResponse(
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status_code=status_code,
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content={"ok": False, "error": {"code": code, "message": message}},
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)
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@router.get("/intents", response_model=None)
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def list_intents() -> dict[str, Any]:
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"""返回当前只读目录，供 Pi 动态生成工具清单。"""
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return {
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"ok": True,
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"scope": ["read"],
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"intents": _catalog_items(),
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"interfaceVersion": INTERFACE_VERSION,
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}
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@router.get("/intents/{name}", response_model=None)
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def get_intent(name: str) -> dict[str, Any] | JSONResponse:
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"""返回单个意图的参数目录项。"""
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key = str(name or "").strip()
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item = _catalog_map().get(key)
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if item is None:
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return _not_found(f"意图「{key}」不在只读目录")
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return item
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@router.post("/invoke", response_model=None)
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async def invoke(req: AgentInvokeRequest) -> dict[str, Any] | JSONResponse:
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"""执行目录内只读意图，业务委托统一工具运行时。"""
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from server.agent_core import harness
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from server.agent_core.tool_runtime import is_registered, run_tool_async
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from server.auth.context import get_identity
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from server.contracts import IntentResult
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from server.state.store import get_store
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identity = get_identity(required=True)
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actor = (
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f"pi-agent:{identity.username}"
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if identity.auth_kind == "agent"
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else identity.username
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)
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request_id = (req.requestId or "").strip() or uuid.uuid4().hex
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name = (req.intent or "").strip()
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store = get_store()
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if not is_registered(name):
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return _deny(
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store,
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intent=name,
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power=harness.power_of(name),
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actor=actor,
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code="INTENT_NOT_REGISTERED",
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message=f"意图「{name}」未登记，拒绝执行",
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request_id=request_id,
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status_code=404,
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)
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power = harness.power_of(name)
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if name not in _catalog_map():
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if power == "P3":
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return _deny(
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store,
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intent=name,
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power=power,
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actor=actor,
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code="POWER_DENIED",
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message="该意图属于 P3 外部副作用，Pi Agent 只读接入无权执行",
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request_id=request_id,
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status_code=403,
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)
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return _deny(
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store,
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intent=name,
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power=power,
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actor=actor,
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code="CONFIRM_REQUIRED",
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message="该意图尚未开放给 Pi Agent 直通，需人工确认后才能执行",
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request_id=request_id,
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status_code=409,
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)
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session_id = (req.sessionId or "").strip() or f"agent:{actor}"
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intent = IntentResult.model_construct(
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intent=name,
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params=dict(req.params or {}),
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confidence=1.0,
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source="LLM",
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)
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try:
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reply = await run_tool_async(store, session_id, intent, actor=actor)
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except Exception as exc:
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logger.exception("agent invoke upstream failed for %s", name, exc_info=exc)
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return JSONResponse(
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status_code=502,
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content={
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"ok": False,
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"error": {
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"code": "UPSTREAM_FAILED",
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"message": "上游业务处理失败，本次调用未完成",
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"requestId": request_id,
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},
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},
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)
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dumped = reply.model_dump()
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blocks = list(dumped.get("blocks") or [])
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evidence_refs: list[str] = []
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for block in blocks:
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for ref in block.get("evidenceRefs") or []:
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if ref not in evidence_refs:
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evidence_refs.append(str(ref))
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return {
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"ok": True,
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"intent": name,
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"power": power,
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"requestId": request_id,
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"actor": actor,
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"data": {
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"text": reply.text,
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"blocks": blocks,
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"commands": list(dumped.get("commands") or []),
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"evidenceRefs": evidence_refs,
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},
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"interfaceVersion": INTERFACE_VERSION,
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}
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