74 lines
3.0 KiB
Python
74 lines
3.0 KiB
Python
"""物料目录的 MongoDB 存储：每个组件一条记录，目录版本放在元数据记录中，
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多个物料共用的字段分组单独存放，每个分组一条记录"""
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from loguru import logger
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from pymongo.asynchronous.database import AsyncDatabase
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from app.resources.component import set_catalog_cache
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from app.schemas.component_resource import ComponentCatalog
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# 元数据记录的 _id，组件记录的 _id 为组件 key
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META_ID = "__catalog__"
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class MongoMaterialRepository:
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def __init__(self, db: AsyncDatabase, prefix: str = ""):
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# 集合名前缀用于测试隔离
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self._materials = db.get_collection(f"{prefix}materials")
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self._field_groups = db.get_collection(f"{prefix}material_field_groups")
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async def load_all(self) -> ComponentCatalog | None:
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# 没有元数据记录视为尚未导入，由调用方决定回退方式
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meta = await self._materials.find_one({"_id": META_ID})
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if meta is None:
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return None
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documents = await self._materials.find({"_id": {"$ne": META_ID}}).to_list()
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groups = await self._field_groups.find({}).to_list()
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return ComponentCatalog.model_validate(
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{
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"version": meta["version"],
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"components": _ordered(documents),
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"field_groups": _ordered(groups),
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}
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)
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async def replace_all(self, catalog: ComponentCatalog) -> None:
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# 整体替换目录，供导入脚本使用；order 保持源文件中的顺序
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for collection, items in (
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(self._materials, catalog.components),
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(self._field_groups, catalog.field_groups),
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):
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await collection.delete_many({})
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if items:
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await collection.insert_many(_documents(items))
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await self._materials.insert_one({"_id": META_ID, "version": catalog.version})
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def _documents(items) -> list[dict]:
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# 记录 _id 为物料或分组的 key
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return [
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{**item.model_dump(mode="json", by_alias=True), "_id": item.key, "order": index}
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for index, item in enumerate(items)
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]
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def _ordered(documents: list[dict]) -> list[dict]:
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return [
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{key: value for key, value in item.items() if key not in ("_id", "order")}
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for item in sorted(documents, key=lambda item: item.get("order", 0))
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]
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async def warm_material_cache(db: AsyncDatabase | None) -> ComponentCatalog | None:
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"""启动时把物料目录从 MongoDB 载入进程缓存；未启用或尚未导入时目录为空，不回退读文件"""
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catalog = await MongoMaterialRepository(db).load_all() if db is not None else None
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if catalog is None:
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logger.error(
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"物料目录未载入：{}，新增、更换组件等需要物料的修改将无法执行",
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"未配置 MONGODB_URI" if db is None else "materials 集合尚未导入",
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)
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else:
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logger.info("已从 MongoDB 加载物料 {} 个", len(catalog.components))
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set_catalog_cache(catalog)
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return catalog
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