102 lines
4.2 KiB
Python
102 lines
4.2 KiB
Python
"""读取前端组件目录：启动时载入进程内存缓存，未载入时回退读取本地 JSON 文件"""
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from pathlib import Path
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from app.schemas.component_resource import (
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ComponentCatalog,
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ComponentQuery,
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ComponentResult,
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)
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DEFAULT_CATALOG_PATH = Path(__file__).resolve().parent / "catalog" / "components.json"
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# 进程内共享的组件目录，由启动流程载入；agent 与前端接口读取同一份
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_cached_catalog: ComponentCatalog | None = None
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def set_catalog_cache(catalog: ComponentCatalog | None) -> None:
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global _cached_catalog
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_cached_catalog = catalog
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def get_catalog_cache() -> ComponentCatalog | None:
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return _cached_catalog
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def load_catalog_file(path: str | Path | None = None) -> ComponentCatalog | None:
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# 如果传入的是相对路径，以项目根目录为基准，避免受启动时工作目录影响
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target = Path(path) if path is not None else DEFAULT_CATALOG_PATH
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if not target.is_absolute():
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target = Path(__file__).resolve().parents[2] / target
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try:
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# utf-8-sig 同时兼容带 BOM 和不带 BOM 的 UTF-8 文件
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content = target.read_text(encoding="utf-8-sig")
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except FileNotFoundError:
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return None
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# 文件损坏或定义不合法直接报错，不能伪装成查无结果
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return ComponentCatalog.model_validate_json(content)
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class ComponentProvider:
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def __init__(self, catalog_path: str | Path | None = None):
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# 指定路径时始终读取该文件；未指定时优先使用启动缓存，缓存为空再读默认文件
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self.catalog_path = catalog_path
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def query(self, query: ComponentQuery) -> ComponentResult:
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catalog = (
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_cached_catalog
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if self.catalog_path is None and _cached_catalog is not None
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else load_catalog_file(self.catalog_path)
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)
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if catalog is None:
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# 如果目录文件不存在，返回未支持状态和原因，由调用方决定失败处理方式
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return ComponentResult(
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status="unsupported",
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message="尚未配置前端组件目录，请先导出真实组件定义",
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)
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# 如果提供关键词，去除首尾空白并统一大小写，未提供时不启用关键词筛选
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keyword = (
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query.keyword.strip().casefold() if query.keyword is not None else None
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)
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# 收集同时满足所有已提供条件的组件，未设置任何条件时返回全量目录
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matches = []
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for component in catalog.components:
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# 如果指定目录编号，则跳过编号不完全匹配的组件
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if query.key is not None and component.key != query.key:
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continue
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# 如果指定前端组件类型，则跳过类型不完全匹配的组件
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if query.type is not None and component.type != query.type:
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continue
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# 将编号、类型、名称、说明和标签拼成检索文本，并与关键词统一大小写
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searchable = " ".join(
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[
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component.key,
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component.type,
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component.name,
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component.description,
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*component.tags,
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]
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).casefold()
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# 如果设置了关键词，但检索文本中不包含该关键词，则跳过当前组件
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if keyword is not None and keyword not in searchable:
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continue
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# 深拷贝后返回，调用方修改结果不会污染共享缓存
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matches.append(component.model_copy(deep=True))
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# 根据是否有匹配项区分查询成功和未找到，同时保留目录版本、来源及结果说明
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return ComponentResult(
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status="resolved" if matches else "not_found",
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components=matches,
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catalog_version=catalog.version,
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source=catalog.source,
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message="已找到组件定义" if matches else "已查询组件目录，未找到匹配的组件",
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)
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if __name__ == "__main__":
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provider = ComponentProvider()
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result = provider.query(ComponentQuery())
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print(result.model_dump_json(indent=2))
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