2026-09-10 15:55:54 +08:00
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from datetime import UTC, datetime
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2026-09-09 21:55:37 +08:00
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from sqlalchemy import select
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from sqlalchemy.ext.asyncio import AsyncSession
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2026-09-09 23:40:35 +08:00
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from app.infrastructure.db import SessionFactory
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from app.model.configuration import (
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AgentIntentConfig,
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ConfigRelease,
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PlatformConfigItem,
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PromptTemplateVersion,
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)
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2026-09-10 15:55:54 +08:00
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from app.service.intent_classifier import IntentConfigEntry
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2026-09-09 21:55:37 +08:00
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class RuntimeConfigService:
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"""Reads only configuration rows bound to the caller's released version."""
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def __init__(self, session: AsyncSession) -> None:
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self.session = session
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async def prompt(
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self, release_id: int, prompt_code: str, task_type: str, agent_type: str | None
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) -> PromptTemplateVersion | None:
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result = await self.session.scalar(
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select(PromptTemplateVersion).where(
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PromptTemplateVersion.release_id == release_id,
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PromptTemplateVersion.prompt_code == prompt_code,
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PromptTemplateVersion.task_type == task_type,
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(PromptTemplateVersion.agent_type == agent_type)
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| PromptTemplateVersion.agent_type.is_(None),
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)
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)
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return result
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async def intent(self, agent_type: str, intent_code: str) -> AgentIntentConfig | None:
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result = await self.session.scalar(
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select(AgentIntentConfig).where(
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AgentIntentConfig.agent_type == agent_type,
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AgentIntentConfig.intent_code == intent_code,
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AgentIntentConfig.status == "active",
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)
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)
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return result
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2026-09-10 15:55:54 +08:00
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async def active_intents(self, agent_type: str) -> tuple[IntentConfigEntry, ...]:
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"""读取某 Agent 当前生效的意图配置,供意图分类链路使用。
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生效判定与 `intent()` 一致:`status='active'`;另外尊重 `effective_at/expire_at`
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的有效期窗口(未填写视为立即生效、不过期)。该表通过生成列唯一键
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`uk_intent_config_active_one` 保证同一 `agent_type:intent_code` 最多一个 active
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版本,因此按 intent_code 匹配不会歧义;仍按 `priority` 排序以保证结果稳定。
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"""
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now = datetime.now(UTC).replace(tzinfo=None)
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rows = await self.session.scalars(
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select(AgentIntentConfig)
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.where(
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AgentIntentConfig.agent_type == agent_type,
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AgentIntentConfig.status == "active",
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(AgentIntentConfig.effective_at.is_(None))
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| (AgentIntentConfig.effective_at <= now),
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(AgentIntentConfig.expire_at.is_(None)) | (AgentIntentConfig.expire_at > now),
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)
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.order_by(AgentIntentConfig.priority, AgentIntentConfig.intent_code)
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)
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return tuple(self._entry(row) for row in rows)
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@staticmethod
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def _entry(row: AgentIntentConfig) -> IntentConfigEntry:
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return IntentConfigEntry(
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intent_code=row.intent_code,
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intent_name=row.intent_name or "",
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description=row.description,
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examples=tuple(str(item) for item in (row.examples or ())),
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classifier_instruction=row.classifier_instruction,
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confidence_threshold=float(row.confidence_threshold),
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)
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2026-09-09 21:55:37 +08:00
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async def allowed_tools(
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self, release_id: int, agent_type: str, intent_code: str
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) -> tuple[str, ...]:
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config_key = f"{agent_type}:{intent_code}"
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item = await self.session.scalar(
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select(PlatformConfigItem).where(
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PlatformConfigItem.release_id == release_id,
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PlatformConfigItem.namespace == "agent_tools",
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PlatformConfigItem.config_key == config_key,
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)
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)
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if item is None:
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return ()
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raw_tools = item.value_json.get("allowed_tools", [])
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if not isinstance(raw_tools, list) or not all(isinstance(tool, str) for tool in raw_tools):
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raise ValueError("invalid tool whitelist configuration")
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return tuple(raw_tools)
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2026-09-09 23:40:35 +08:00
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async def fund_quote(self, release_id: int) -> dict[str, object]:
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"""读取已发布行情配置;缺失时返回空映射,由 Service 使用安全默认值。"""
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item = await self.session.scalar(
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select(PlatformConfigItem).where(
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PlatformConfigItem.release_id == release_id,
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PlatformConfigItem.namespace == "fund_market",
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PlatformConfigItem.config_key == "default",
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)
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)
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return item.value_json if item is not None else {}
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async def load_fund_quote_config() -> dict[str, object]:
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"""读取当前激活行情配置;配置中心不可用时交给调用方使用默认值。"""
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async with SessionFactory() as session:
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release = await session.scalar(
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select(ConfigRelease).where(ConfigRelease.status == "active")
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)
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if release is None:
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return {}
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return await RuntimeConfigService(session).fund_quote(release.id)
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2026-09-10 15:55:54 +08:00
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async def load_active_intent_configs(agent_type: str) -> tuple[IntentConfigEntry, ...]:
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"""意图分类链路的运行期配置装载器:只读 `agent_intent_config` 的 active 行。
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该表不绑定 `config_release`(没有 `release_id` 外键),因此这里按 Agent 直接读取;
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没有配置时返回空元组,分类退化为代码声明的意图清单——**行为与接入前一致**。
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"""
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async with SessionFactory() as session:
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return await RuntimeConfigService(session).active_intents(agent_type)
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2026-09-10 20:22:42 +08:00
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async def load_active_prompt(
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prompt_code: str, task_type: str, agent_type: str
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) -> PromptTemplateVersion | None:
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"""读取当前生效版本里的提示词;没有 active 版本或没有该提示词时返回 None。
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`prompt_template_version` 绑定 `release_id`,所以必须先定位 active 的 `config_release`
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——这也正是「提示词变更要经过审核与发布」的落地方式:改话术走发布流程,而不是改代码。
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返回 None 是**正常路径**而非异常:调用方(Agent)据此回落到代码内置的默认提示词,
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保证即使配置中心还没发布过这条提示词,功能也能工作。
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"""
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async with SessionFactory() as session:
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release = await session.scalar(
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select(ConfigRelease).where(ConfigRelease.status == "active")
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)
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if release is None:
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return None
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return await RuntimeConfigService(session).prompt(
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release.id, prompt_code, task_type, agent_type
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)
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