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writer-work-flow/packages/llm_gateway/ww_llm_gateway/routing.py
Yaojia Wang b523b4fd21 feat: M1 — 立项→写章草稿(SSE)→自动保存;连一家 provider
- 薄自建 LLM 网关:OpenAI 兼容适配器(DeepSeek) + instructor 结构化输出 + usage_ledger 记账 + 档位路由
- 记忆服务 assemble:确定性选择(显式+主角+近况) + 渲染卡 + 缓存断点(中性文本)
- LangGraph 写章节点 + Postgres checkpointer + SSE 归一(token/done/error)
- API:立项 + 写章 draft(SSE) + PUT 自动保存 + 提供商凭据(Fernet 加密/测试连接)
- 前端:AppShell + 作品库 + 5 步立项向导 + 写作工作台(流式打字机+自动保存) + 设置页
- M1 E2E:真实 DB + mock 网关零 token 走通闭环
2026-06-18 11:38:28 +02:00

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"""档位路由tier -> (provider, model)ARCH §4.3)。
M1 只读全局默认config.tier_defaults形如 "deepseek:deepseek-chat"
作品级 / Skill 级覆盖留待后续§4.3 三级解析)。
"""
from __future__ import annotations
from dataclasses import dataclass
from ww_config import get_settings
from .types import Tier
@dataclass(frozen=True)
class Route:
provider: str
model: str
def resolve_route(tier: Tier) -> Route:
spec = get_settings().tier_defaults.get(tier)
if not spec:
raise ValueError(f"no tier_defaults entry for tier={tier!r}")
provider, sep, model = spec.partition(":")
if not sep or not provider or not model:
raise ValueError(f"invalid tier route {spec!r}; expected 'provider:model'")
return Route(provider=provider, model=model)