.

app/core/config.py

@@ -1,4 +1,4 @@
-from pydantic import BaseSettings
+from pydantic_settings import BaseSettings
 import os
 
 class Settings(BaseSettings):
@@ -6,7 +6,7 @@ class Settings(BaseSettings):
     EMBEDDING_DIM: int = 768
     TOP_K: int = 5
     DOC_PATH: str = "docs/"
-    DEVICE: str = "cpu"  # 可设置为 cuda:0
+    DEVICE: str = "cpu"
     MODEL_NAME: str = "BAAI/bge-m3"
 
-settings = Settings()
+settings = Settings()

requirements.txt

@@ -5,4 +5,5 @@ gunicorn
 pydantic
 numpy
 transformers
-torch
+torch
+llama-index==0.12.34

scripts/rag_build_query.py

@@ -9,10 +9,9 @@ from llama_index import (
 )
 from llama_index.embeddings.huggingface import HuggingFaceEmbedding
 from llama_index.vector_stores.faiss import FaissVectorStore
-from llama_index.llms.base import ChatMessage
+from app.core.config import settings
+from scripts.permissions import get_user_allowed_indexes
 
-# 假设你要用的本地嵌入模型
-EMBED_MODEL_NAME = "sentence-transformers/all-MiniLM-L6-v2"
 USER_INDEX_PATH = "index_data"
 USER_DOC_PATH = "docs"
 
@@ -22,7 +21,7 @@ def build_user_index(user_id: str):
         raise FileNotFoundError(f"文档目录不存在: {doc_dir}")
     
     documents = SimpleDirectoryReader(doc_dir).load_data()
-    embed_model = HuggingFaceEmbedding(model_name=EMBED_MODEL_NAME)
+    embed_model = HuggingFaceEmbedding(model_name=settings.MODEL_NAME)
     service_context = ServiceContext.from_defaults(embed_model=embed_model)
     
     # 构建向量索引
@@ -37,22 +36,28 @@ def build_user_index(user_id: str):
     faiss.write_index(index.vector_store.index, index_path)
     print(f"[BUILD] 为用户 {user_id} 构建并保存了索引 → {index_path}")
 
-from scripts.permissions import get_user_allowed_indexes
-
 def query_user_rag(user_id: str, question: str, top_k: int = 4) -> str:
     index_path = os.path.join(USER_INDEX_PATH, f"{user_id}.index")
     if not os.path.exists(index_path):
         raise FileNotFoundError(f"[ERROR] 用户 {user_id} 的索引不存在")
     
-    embed_model = HuggingFaceEmbedding(model_name=EMBED_MODEL_NAME)
+    embed_model = HuggingFaceEmbedding(model_name=settings.MODEL_NAME)
     service_context = ServiceContext.from_defaults(embed_model=embed_model)
 
-    # 加载索引
+    # 加载主索引
     vector_store = FaissVectorStore.from_persist_path(index_path)
     index = VectorStoreIndex.from_vector_store(vector_store, service_context=service_context)
     
-    retriever = index.as_retriever(similarity_top_k=top_k)
+    nodes = index.as_retriever(similarity_top_k=top_k).retrieve(question)
-    nodes = retriever.retrieve(question)
+
+    # 加载权限范围内的共享索引
+    shared_indexes = get_user_allowed_indexes(user_id)
+    for shared_name in shared_indexes:
+        shared_path = os.path.join(USER_INDEX_PATH, shared_name)
+        if os.path.exists(shared_path):
+            shared_store = FaissVectorStore.from_persist_path(shared_path)
+            shared_index = VectorStoreIndex.from_vector_store(shared_store, service_context=service_context)
+            nodes += shared_index.as_retriever(similarity_top_k=top_k).retrieve(question)
 
     # 构造 Prompt
     context_str = "\n\n".join([n.get_content() for n in nodes])
@@ -73,4 +78,4 @@ if __name__ == "__main__":
     build_user_index(uid)
     prompt = query_user_rag(uid, "这份资料中提到了哪些关键点？")
     print("\n------ 最终构建的 Prompt 给 LLM 使用 ------\n")
-    print(prompt)
+    print(prompt)