061f2b8084
变更项： 1. 新增 LLM 目录数据层（t_llm_provider_templates/t_llm_dify_apps/t_llm_backends/t_llm_scenes/t_llm_catalog_meta），支持三层配置管理。 2. Robot 启动接入 llm_catalog_db：自动建表并从旧 llm(backends/scenes) 配置迁移初始化。 3. LLMRegistry 改为优先读取目录模型并按 scene 解析：dify_app 自动合并 Provider 模板与 app_key 差异，降低重复配置。 4. system 蓝图 /api/system/llm_config 改为目录模型读写，新增完整校验（provider引用、app_key、scene目标合法性）。 5. system_llm 页面重构为四块：Provider 模板、Dify 应用、通用 Backend、Scene 绑定，并展示插件依赖拓扑。 6. 保留 YAML 旧结构兜底展示与运行时回退，保证目录表异常时系统仍可运行。
378 lines
15 KiB
Python
378 lines
15 KiB
Python
from __future__ import annotations
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import json
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import time
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from pathlib import Path
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from typing import Any, Dict, List, Optional
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import yaml
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from db.connection import DBConnectionManager
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class LLMRegistry:
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"""统一 LLM 路由注册器（scene -> target -> final_config）。
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当前支持两套数据源：
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1. 新目录模型（推荐）：MySQL 的 provider_templates / dify_apps / backends / scenes；
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2. 旧模型兜底：config.yaml 的 llm(backends/scenes)。
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"""
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_cache: Dict[str, Any] = {
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"cache_until": 0.0,
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"catalog": {},
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"legacy_llm": {},
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}
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@classmethod
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def get_root_config_path(cls) -> Path:
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return Path(__file__).resolve().parents[2] / "config.yaml"
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@classmethod
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def _load_yaml_root(cls) -> Dict[str, Any]:
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"""读取 YAML 根配置（仅作为迁移兜底）。"""
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path = cls.get_root_config_path()
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if not path.exists():
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return {}
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with open(path, "r", encoding="utf-8") as fp:
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return yaml.safe_load(fp) or {}
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@classmethod
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def _load_yaml_legacy_llm(cls) -> Dict[str, Any]:
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"""读取旧 llm 结构（backends/scenes）作为回退。"""
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root = cls._load_yaml_root()
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llm = root.get("llm", {}) or {}
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return llm if isinstance(llm, dict) else {}
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@staticmethod
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def _loads_json(value: Any, default: Optional[Dict[str, Any]] = None) -> Dict[str, Any]:
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"""把 JSON 字段安全转为 dict。"""
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if isinstance(value, dict):
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return value
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if isinstance(value, str):
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try:
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obj = json.loads(value)
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return obj if isinstance(obj, dict) else (default or {})
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except json.JSONDecodeError:
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return default or {}
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return default or {}
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@classmethod
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def _load_catalog_from_mysql(cls) -> Dict[str, Any]:
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"""从 MySQL 读取新目录模型。"""
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try:
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db_manager = DBConnectionManager.get_instance()
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if not db_manager or not db_manager.mysql_pool:
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return {}
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conn = db_manager.get_mysql_connection()
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try:
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with conn.cursor(dictionary=True) as cursor:
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cursor.execute("SELECT name, provider_type, config_json, enabled FROM t_llm_provider_templates")
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provider_rows = cursor.fetchall() or []
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cursor.execute(
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"""
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SELECT name, provider_template, app_key, workflow_output_key, config_json, enabled
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FROM t_llm_dify_apps
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"""
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)
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app_rows = cursor.fetchall() or []
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cursor.execute("SELECT name, config_json, enabled FROM t_llm_backends")
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backend_rows = cursor.fetchall() or []
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cursor.execute("SELECT name, target_type, target_ref, enabled FROM t_llm_scenes")
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scene_rows = cursor.fetchall() or []
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cursor.execute(
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"SELECT meta_value FROM t_llm_catalog_meta WHERE meta_key='default_scene' LIMIT 1"
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)
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meta_row = cursor.fetchone() or {}
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finally:
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conn.close()
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providers = {
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str(row.get("name") or "").strip(): {
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"name": str(row.get("name") or "").strip(),
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"provider_type": str(row.get("provider_type") or "").strip().lower(),
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"enabled": bool(int(row.get("enabled") or 0)),
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"config": cls._loads_json(row.get("config_json"), {}),
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}
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for row in provider_rows
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if str(row.get("name") or "").strip()
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}
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dify_apps = {
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str(row.get("name") or "").strip(): {
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"name": str(row.get("name") or "").strip(),
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"provider_template": str(row.get("provider_template") or "").strip(),
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"app_key": str(row.get("app_key") or "").strip(),
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"workflow_output_key": str(row.get("workflow_output_key") or "text").strip(),
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"enabled": bool(int(row.get("enabled") or 0)),
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"config": cls._loads_json(row.get("config_json"), {}),
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}
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for row in app_rows
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if str(row.get("name") or "").strip()
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}
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backends = {
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str(row.get("name") or "").strip(): {
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"name": str(row.get("name") or "").strip(),
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"enabled": bool(int(row.get("enabled") or 0)),
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"config": cls._loads_json(row.get("config_json"), {}),
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}
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for row in backend_rows
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if str(row.get("name") or "").strip()
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}
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scenes = {
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str(row.get("name") or "").strip(): {
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"name": str(row.get("name") or "").strip(),
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"target_type": str(row.get("target_type") or "").strip().lower(),
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"target_ref": str(row.get("target_ref") or "").strip(),
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"enabled": bool(int(row.get("enabled") or 0)),
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}
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for row in scene_rows
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if str(row.get("name") or "").strip()
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}
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catalog = {
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"default_scene": str(meta_row.get("meta_value") or "").strip(),
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"providers": providers,
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"dify_apps": dify_apps,
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"backends": backends,
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"scenes": scenes,
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}
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# 只要目录中存在场景，就认为新模型可用。
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return catalog if scenes else {}
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except Exception:
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return {}
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@classmethod
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def _load_runtime_snapshot(cls) -> Dict[str, Any]:
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"""加载运行时快照（目录模型优先，legacy 兜底）。"""
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now = time.time()
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if cls._cache.get("cache_until", 0.0) > now and cls._cache.get("catalog") is not None:
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return {
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"catalog": cls._cache.get("catalog", {}) or {},
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"legacy_llm": cls._cache.get("legacy_llm", {}) or {},
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}
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catalog = cls._load_catalog_from_mysql()
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legacy_llm = cls._load_yaml_legacy_llm()
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cls._cache = {
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"cache_until": now + 3.0,
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"catalog": catalog or {},
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"legacy_llm": legacy_llm or {},
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}
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return {"catalog": catalog or {}, "legacy_llm": legacy_llm or {}}
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@classmethod
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def _merge_dify_provider_and_app(cls, provider: Dict[str, Any], app: Dict[str, Any]) -> Dict[str, Any]:
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"""把 Dify Provider 模板与 Dify 应用差异合并成最终调用配置。"""
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provider_cfg = dict((provider or {}).get("config", {}) or {})
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app_cfg = dict((app or {}).get("config", {}) or {})
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merged = dict(provider_cfg)
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merged.update(app_cfg)
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# 强制写入 Dify 必要字段：provider、api_key、workflow_output_key。
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merged["provider"] = "dify"
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merged["api_key"] = str((app or {}).get("app_key") or "").strip()
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merged["workflow_output_key"] = str((app or {}).get("workflow_output_key") or "text").strip()
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return merged
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@classmethod
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def _resolve_scene_with_catalog(cls, scene_name: str, catalog: Dict[str, Any]) -> Dict[str, Any]:
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"""按新目录模型解析 scene。"""
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scenes = (catalog or {}).get("scenes", {}) or {}
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scene = scenes.get(scene_name, {}) or {}
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if not scene or not scene.get("enabled", True):
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return {}
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target_type = str(scene.get("target_type") or "").strip().lower()
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target_ref = str(scene.get("target_ref") or "").strip()
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if not target_ref:
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return {}
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if target_type == "backend":
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backend = ((catalog or {}).get("backends", {}) or {}).get(target_ref, {}) or {}
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if not backend or not backend.get("enabled", True):
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return {}
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config = dict(backend.get("config", {}) or {})
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config["backend"] = target_ref
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config["scene"] = scene_name
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return config
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if target_type == "dify_app":
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app = ((catalog or {}).get("dify_apps", {}) or {}).get(target_ref, {}) or {}
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if not app or not app.get("enabled", True):
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return {}
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provider_name = str(app.get("provider_template") or "").strip()
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provider = ((catalog or {}).get("providers", {}) or {}).get(provider_name, {}) or {}
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if not provider or not provider.get("enabled", True):
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return {}
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config = cls._merge_dify_provider_and_app(provider, app)
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# 生成稳定 backend 标识，便于日志追踪。
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config["backend"] = f"dify_app::{target_ref}"
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config["scene"] = scene_name
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return config
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return {}
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@classmethod
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def _resolve_scene_with_legacy(cls, scene_name: str, legacy_llm: Dict[str, Any]) -> Dict[str, Any]:
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"""按旧 llm(backends/scenes) 结构解析 scene（兜底）。"""
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llm = legacy_llm or {}
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backends = llm.get("backends", {}) or {}
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scenes = llm.get("scenes", {}) or {}
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if not isinstance(backends, dict):
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backends = {}
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if not isinstance(scenes, dict):
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scenes = {}
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backend_name = str(scenes.get(scene_name) or "").strip()
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if not backend_name:
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backend_name = str(llm.get("default_backend") or "").strip()
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if not backend_name:
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return {}
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backend = backends.get(backend_name, {}) or {}
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if not isinstance(backend, dict):
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return {}
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config = dict(backend)
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config["backend"] = backend_name
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config["scene"] = scene_name
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return config
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@classmethod
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def get_catalog(cls) -> Dict[str, Any]:
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"""对外暴露运行时目录（优先 MySQL）。"""
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return cls._load_runtime_snapshot().get("catalog", {}) or {}
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@classmethod
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def get_llm_config(cls) -> Dict[str, Any]:
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"""兼容输出：将目录模型转为 legacy llm(backends/scenes) 视图。
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说明：
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1. 若目录模型可用，则返回“展开后”的 backends/scenes；
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2. 若目录模型不可用，则原样返回 YAML 旧结构。
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"""
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snapshot = cls._load_runtime_snapshot()
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catalog = snapshot.get("catalog", {}) or {}
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if not catalog:
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llm = snapshot.get("legacy_llm", {}) or {}
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return llm if isinstance(llm, dict) else {}
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backends: Dict[str, Any] = {}
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scenes_map: Dict[str, str] = {}
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for backend_name, backend in (catalog.get("backends", {}) or {}).items():
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if not (backend or {}).get("enabled", True):
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continue
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backends[backend_name] = dict((backend or {}).get("config", {}) or {})
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for app_name, app in (catalog.get("dify_apps", {}) or {}).items():
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if not (app or {}).get("enabled", True):
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continue
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provider_name = str((app or {}).get("provider_template") or "").strip()
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provider = ((catalog.get("providers", {}) or {}).get(provider_name, {}) or {})
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if not provider or not provider.get("enabled", True):
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continue
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synthetic_backend = f"dify_app::{app_name}"
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backends[synthetic_backend] = cls._merge_dify_provider_and_app(provider, app)
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for scene_name, scene in (catalog.get("scenes", {}) or {}).items():
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if not (scene or {}).get("enabled", True):
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continue
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target_type = str((scene or {}).get("target_type") or "").strip().lower()
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target_ref = str((scene or {}).get("target_ref") or "").strip()
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if not target_ref:
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continue
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if target_type == "dify_app":
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scenes_map[scene_name] = f"dify_app::{target_ref}"
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elif target_type == "backend":
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scenes_map[scene_name] = target_ref
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default_scene = str(catalog.get("default_scene") or "").strip()
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default_backend = str(scenes_map.get(default_scene) or "").strip()
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return {
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"default_backend": default_backend,
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"backends": backends,
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"scenes": scenes_map,
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}
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@classmethod
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def get_default_backend(cls) -> str:
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llm_config = cls.get_llm_config()
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return str(llm_config.get("default_backend", "") or "").strip()
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@classmethod
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def get_backend(cls, backend_name: str) -> Dict[str, Any]:
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if not backend_name:
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return {}
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llm_config = cls.get_llm_config()
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backends = llm_config.get("backends", {}) or {}
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backend = backends.get(backend_name, {}) or {}
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return dict(backend) if isinstance(backend, dict) else {}
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@classmethod
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def get_scenes(cls) -> Dict[str, str]:
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llm_config = cls.get_llm_config()
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raw_scenes = llm_config.get("scenes", {}) or {}
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if not isinstance(raw_scenes, dict):
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return {}
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normalized: Dict[str, str] = {}
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for raw_scene, raw_backend in raw_scenes.items():
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scene_name = str(raw_scene or "").strip()
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backend_name = str(raw_backend or "").strip()
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if scene_name and backend_name:
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normalized[scene_name] = backend_name
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return normalized
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@classmethod
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def get_scene_backend_name(cls, scene_name: str) -> str:
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name = str(scene_name or "").strip()
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if not name:
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return cls.get_default_backend()
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scenes = cls.get_scenes()
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backend_name = str(scenes.get(name, "") or "").strip()
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if backend_name:
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return backend_name
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return cls.get_default_backend()
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@classmethod
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def resolve_by_scene(cls, scene_name: str) -> Dict[str, Any]:
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"""按 scene 解析最终配置（优先目录模型）。"""
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name = str(scene_name or "").strip()
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if not name:
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return {}
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snapshot = cls._load_runtime_snapshot()
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catalog = snapshot.get("catalog", {}) or {}
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if catalog:
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resolved = cls._resolve_scene_with_catalog(name, catalog)
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if resolved:
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return resolved
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return cls._resolve_scene_with_legacy(name, snapshot.get("legacy_llm", {}) or {})
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@classmethod
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def resolve(cls, local_config: Optional[Dict[str, Any]] = None) -> Dict[str, Any]:
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local = dict(local_config or {})
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scene_name = str(local.get("scene") or "").strip()
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if scene_name:
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merged = cls.resolve_by_scene(scene_name)
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merged.update(local)
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# 以场景路由结果为准，避免调用方覆盖关键路由字段。
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routed = cls.resolve_by_scene(scene_name)
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if routed:
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merged.update(routed)
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merged["scene"] = scene_name
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return merged
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return local
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@classmethod
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def get_scene_names(cls) -> List[str]:
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"""返回可用场景名列表（便于后台下拉框或校验）。"""
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catalog = cls.get_catalog()
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if catalog:
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return sorted(list((catalog.get("scenes", {}) or {}).keys()))
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return sorted(list(cls.get_scenes().keys()))
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