67 lines
2.5 KiB
Python
67 lines
2.5 KiB
Python
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"""基座验证探针：端到端触发 `ToolExecutor` 的四种拒绝分支。
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**为什么专门做一个 Agent**：`ToolExecutor` 的四种拒绝（意图未配置工具白名单 / 工具不在
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白名单 / 缺权限 / 角色不符）在真实链路上很难**安全**触发 —— 要么去改客服、风控的生效配置，
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要么去动 RBAC，两条路都会影响正在工作的 Agent。用一个只读、无副作用的探针把这件事隔离出来。
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**它不碰任何业务数据**：唯一的工具只回显调用方给的参数，不查库、不调模型、不写状态。
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角色限定为 `admin`，意图只有 `probe` 一个。
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用法见 `tools/verify_tool_executor_denials.py`：它按顺序调整探针的意图配置与工具白名单，
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分别触发四种拒绝，最后把配置恢复到验证前的状态。
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"""
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from typing import Any
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from pydantic import BaseModel, ConfigDict
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from app.core.contracts import (
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AgentDefinition,
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AgentRequest,
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CoreResult,
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RequestContext,
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)
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from app.service.agent.base import BaseAgent
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AGENT_TYPE = "platform_probe"
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INTENT_PROBE = "probe"
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PROBE_TOOL = "probe_echo"
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PROBE_PERMISSION = "probe:read"
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class ProbeEchoArgs(BaseModel):
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"""严格入参：探针不接收自由文本，避免被当成通用执行入口。"""
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model_config = ConfigDict(extra="forbid", frozen=True)
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note: str = ""
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async def probe_echo_tool(arguments: BaseModel, context: RequestContext) -> dict[str, Any]:
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"""回显参数。**只读且无副作用** —— 不查库、不写状态、不调外部服务。"""
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note = getattr(arguments, "note", "")
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return {"echo": note, "trace_id": context.trace_id}
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class PlatformProbeAgent(BaseAgent):
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"""基座探针：只用于验证工具链路的拒绝行为，不承载任何业务。"""
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definition = AgentDefinition(
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agent_type=AGENT_TYPE,
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version="1.0.0",
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allowed_roles=("admin",),
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allowed_portals=("api",),
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allowed_tools=(PROBE_TOOL,),
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supported_intents=(INTENT_PROBE,),
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)
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async def handle(self, request: AgentRequest, context: RequestContext) -> CoreResult:
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# 走公共工具链路：探针要验证的正是这条路上的白名单、权限与角色校验。
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output = await self.call_tool(
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PROBE_TOOL,
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{"note": request.message[:50]},
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intent=INTENT_PROBE,
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context=context,
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)
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return CoreResult(text=f"probe ok: {output}", intent=self._classified_intent)
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