{"id":42601,"date":"2025-06-10T01:04:18","date_gmt":"2025-06-09T17:04:18","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/42601.html"},"modified":"2025-06-10T01:04:18","modified_gmt":"2025-06-09T17:04:18","slug":"langchain%e7%9f%a5%e8%af%86%e5%ba%93%e7%ae%a1%e7%90%86%e5%90%8e%e7%ab%af%e6%8e%a5%e5%8f%a3%ef%bc%9a%e6%95%b0%e6%8d%ae%e5%ba%93%e6%93%8d%e4%bd%9c%e8%af%a6%e8%a7%a3-%e6%9e%84%e5%bb%ba","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/42601.html","title":{"rendered":"LangChain\u77e5\u8bc6\u5e93\u7ba1\u7406\u540e\u7aef\u63a5\u53e3\uff1a\u6570\u636e\u5e93\u64cd\u4f5c\u8be6\u89e3\u2014\u2014 \u6784\u5efa\u672c\u5730\u77e5\u8bc6\u5e93\u7cfb\u7edf\u7684\u57fa\u7840\u300a\u4e8c\u300b"},"content":{"rendered":"

\u8fd9\u6bb5 Python \u4ee3\u7801\u662f\u4e00\u4e2a\u5b8c\u6574\u7684 \u77e5\u8bc6\u5e93\u6570\u636e\u5e93\u64cd\u4f5c\u6a21\u5757，\u7528\u4e8e\u5bf9\u672c\u5730\u77e5\u8bc6\u5e93\u7cfb\u7edf\u4e2d\u7684\u77e5\u8bc6\u5e93\u8fdb\u884c\u589e\u5220\u6539\u67e5（CRUD）\u64cd\u4f5c\u3002\u5b83\u57fa\u4e8e SQLAlchemy ORM \u6846\u67b6 \u548c\u4e00\u4e2a\u81ea\u5b9a\u4e49\u7684\u88c5\u9970\u5668 @with_session \u5b9e\u73b0\u6570\u636e\u5e93\u4f1a\u8bdd\u7ba1\u7406\u3002<\/p>\n

\n

📘 \u4e00\u3001\u6574\u4f53\u529f\u80fd\u6982\u8ff0<\/h2>\n

\u8be5\u6a21\u5757\u4e3b\u8981\u5b9e\u73b0\u4ee5\u4e0b\u529f\u80fd：<\/p>\n\n\u529f\u80fd\u63cf\u8ff0<\/tr>\n\n\n\n\n\n\n\n
\u2705 \u6dfb\u52a0\u77e5\u8bc6\u5e93<\/td>\n\u5982\u679c\u4e0d\u5b58\u5728\u5219\u6dfb\u52a0，\u5426\u5219\u66f4\u65b0\u4fe1\u606f<\/td>\n<\/tr>\n
\u2705 \u5217\u51fa\u6240\u6709\u77e5\u8bc6\u5e93<\/td>\n\u53ef\u8bbe\u7f6e\u6587\u4ef6\u6570\u91cf\u8fc7\u6ee4\u6761\u4ef6<\/td>\n<\/tr>\n
\u2705 \u68c0\u67e5\u77e5\u8bc6\u5e93\u662f\u5426\u5b58\u5728<\/td>\n\u4f7f\u7528\u4e0d\u533a\u5206\u5927\u5c0f\u5199\u7684\u5339\u914d\u65b9\u5f0f<\/td>\n<\/tr>\n
\u2705 \u52a0\u8f7d\u77e5\u8bc6\u5e93\u57fa\u672c\u4fe1\u606f<\/td>\n\u83b7\u53d6\u540d\u79f0\u3001\u5411\u91cf\u5e93\u7c7b\u578b\u3001\u5d4c\u5165\u6a21\u578b<\/td>\n<\/tr>\n
\u2705 \u5220\u9664\u77e5\u8bc6\u5e93<\/td>\n\u652f\u6301\u6309\u540d\u79f0\u5220\u9664<\/td>\n<\/tr>\n
\u2705 \u83b7\u53d6\u77e5\u8bc6\u5e93\u8be6\u7ec6\u4fe1\u606f<\/td>\n\u8fd4\u56de\u5b57\u5178\u683c\u5f0f\u6570\u636e，\u4fbf\u4e8e\u63a5\u53e3\u8fd4\u56de<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u6b64\u5916\u8fd8\u63d0\u4f9b\u4e86\u4e00\u4e2a\u6d4b\u8bd5\u5165\u53e3\u51fd\u6570，\u7528\u4e8e\u9a8c\u8bc1\u8fd9\u4e9b\u6570\u636e\u5e93\u64cd\u4f5c\u662f\u5426\u6b63\u5e38\u5de5\u4f5c\u3002<\/p>\n

\n

🧠 \u4e8c\u3001\u4ee3\u7801\u7ed3\u6784\u8be6\u89e3<\/h2>\n

🔹 \u7b2c\u4e00\u90e8\u5206：\u5bfc\u5165\u4f9d\u8d56\u4e0e\u6a21\u5757\u8bf4\u660e<\/h3>\n

from<\/span> server.<\/span>db.<\/span>models.<\/span>knowledge_base_model import<\/span> KnowledgeBaseModel
\nfrom<\/span> server.<\/span>db.<\/span>session import<\/span> with_session<\/p>\n

    \n
  • KnowledgeBaseModel：SQLAlchemy ORM \u5b9a\u4e49\u7684\u77e5\u8bc6\u5e93\u8868\u6a21\u578b<\/li>\n
  • with_session：\u4e00\u4e2a\u88c5\u9970\u5668，\u81ea\u52a8\u6ce8\u5165 SQLAlchemy \u7684 session \u5bf9\u8c61，\u907f\u514d\u624b\u52a8\u6253\u5f00\/\u5173\u95ed\u6570\u636e\u5e93\u8fde\u63a5<\/li>\n<\/ul>\n
    \n

    🔹 \u7b2c\u4e8c\u90e8\u5206：\u6838\u5fc3\u6570\u636e\u5e93\u64cd\u4f5c\u51fd\u6570<\/h3>\n

    1. add_kb_to_db(session, kb_name, kb_info, vs_type, embed_model)<\/h4>\n

    🎯 \u529f\u80fd：<\/h5>\n
      \n
    • \u5411\u6570\u636e\u5e93\u4e2d\u6dfb\u52a0\u4e00\u4e2a\u65b0\u7684\u77e5\u8bc6\u5e93<\/li>\n
    • \u82e5\u5df2\u5b58\u5728\u540c\u540d\u77e5\u8bc6\u5e93，\u5219\u66f4\u65b0\u5176\u4fe1\u606f<\/li>\n<\/ul>\n
      📌 \u53c2\u6570\u8bf4\u660e：<\/h5>\n
        \n
      • kb_name: \u77e5\u8bc6\u5e93\u540d\u79f0（\u552f\u4e00）<\/li>\n
      • kb_info: \u77e5\u8bc6\u5e93\u7b80\u4ecb（\u7528\u4e8e AI agent \u7406\u89e3\u7528\u9014）<\/li>\n
      • vs_type: \u5411\u91cf\u5e93\u7c7b\u578b（\u5982 FAISS\u3001Chroma）<\/li>\n
      • embed_model: \u5d4c\u5165\u6a21\u578b\u540d\u79f0（\u5982 text-embedding-ada-002）<\/li>\n<\/ul>\n
        🔄 \u5de5\u4f5c\u6d41\u7a0b：<\/h5>\n
      • \u67e5\u8be2\u662f\u5426\u6709\u540c\u540d\u77e5\u8bc6\u5e93（\u5ffd\u7565\u5927\u5c0f\u5199）<\/li>\n
      • \u82e5\u65e0，\u5219\u521b\u5efa\u5e76\u63d2\u5165\u65b0\u8bb0\u5f55<\/li>\n
      • \u82e5\u6709，\u5219\u66f4\u65b0 info\u3001\u5411\u91cf\u5e93\u7c7b\u578b\u548c\u5d4c\u5165\u6a21\u578b\u5b57\u6bb5<\/li>\n
        \u2705 \u8fd4\u56de\u503c：<\/h5>\n

        \u59cb\u7ec8\u8fd4\u56de True，\u8868\u793a\u6267\u884c\u6210\u529f<\/p>\n

        \n

        2. list_kbs_from_db(session, min_file_count: int = -1)<\/h4>\n

        🎯 \u529f\u80fd：<\/h5>\n

        \u5217\u51fa\u6240\u6709\u6587\u4ef6\u6570\u91cf\u5927\u4e8e\u6307\u5b9a\u503c\u7684\u77e5\u8bc6\u5e93\u540d\u79f0\u5217\u8868<\/p>\n

        📌 \u53c2\u6570\u8bf4\u660e：<\/h5>\n
          \n
        • min_file_count: \u6700\u5c0f\u6587\u4ef6\u6570，\u7528\u4e8e\u7b5b\u9009\u6d3b\u8dc3\u7684\u77e5\u8bc6\u5e93<\/li>\n<\/ul>\n
          🔄 \u5de5\u4f5c\u6d41\u7a0b：<\/h5>\n
            \n
          • \u67e5\u8be2\u6240\u6709\u6ee1\u8db3\u6761\u4ef6\u7684 kb_name<\/li>\n
          • \u5c06\u7ed3\u679c\u4ece (kb_name,) \u8f6c\u6362\u4e3a kb_name \u5b57\u7b26\u4e32\u5217\u8868<\/li>\n<\/ul>\n
            \u2705 \u793a\u4f8b\u8f93\u51fa：<\/h5>\n

            [<\/span>"test_kb"<\/span>,<\/span> "math_kb"<\/span>,<\/span> "law_kb"<\/span>]<\/span><\/p>\n

            \n

            3. kb_exists(session, kb_name)<\/h4>\n

            🎯 \u529f\u80fd：<\/h5>\n

            \u68c0\u67e5\u67d0\u4e2a\u77e5\u8bc6\u5e93\u662f\u5426\u5b58\u5728\u4e8e\u6570\u636e\u5e93\u4e2d<\/p>\n

            📌 \u53c2\u6570\u8bf4\u660e：<\/h5>\n
              \n
            • kb_name: \u77e5\u8bc6\u5e93\u540d\u79f0（\u652f\u6301\u6a21\u7cca\u5339\u914d，\u4e0d\u533a\u5206\u5927\u5c0f\u5199）<\/li>\n<\/ul>\n
              \u2705 \u8fd4\u56de\u503c：<\/h5>\n

              \u5e03\u5c14\u503c，True \u8868\u793a\u5b58\u5728，False \u8868\u793a\u4e0d\u5b58\u5728<\/p>\n

              \n

              4. load_kb_from_db(session, kb_name)<\/h4>\n

              🎯 \u529f\u80fd：<\/h5>\n

              \u52a0\u8f7d\u77e5\u8bc6\u5e93\u7684\u57fa\u672c\u914d\u7f6e\u4fe1\u606f（\u540d\u79f0\u3001\u5411\u91cf\u5e93\u7c7b\u578b\u3001\u5d4c\u5165\u6a21\u578b）<\/p>\n

              📌 \u53c2\u6570\u8bf4\u660e：<\/h5>\n
                \n
              • kb_name: \u77e5\u8bc6\u5e93\u540d\u79f0（\u652f\u6301\u6a21\u7cca\u5339\u914d）<\/li>\n<\/ul>\n
                \u2705 \u8fd4\u56de\u503c：<\/h5>\n

                \u5143\u7ec4\u5f62\u5f0f (kb_name, vs_type, embed_model)，\u5982\u679c\u4e0d\u5b58\u5728\u5219\u8fd4\u56de (None, None, None)<\/p>\n

                \n

                5. delete_kb_from_db(session, kb_name)<\/h4>\n

                🎯 \u529f\u80fd：<\/h5>\n

                \u6839\u636e\u77e5\u8bc6\u5e93\u540d\u79f0\u5220\u9664\u5bf9\u5e94\u6761\u76ee<\/p>\n

                📌 \u53c2\u6570\u8bf4\u660e：<\/h5>\n
                  \n
                • kb_name: \u77e5\u8bc6\u5e93\u540d\u79f0（\u652f\u6301\u6a21\u7cca\u5339\u914d）<\/li>\n<\/ul>\n
                  \u2705 \u8fd4\u56de\u503c：<\/h5>\n

                  \u59cb\u7ec8\u8fd4\u56de True，\u8868\u793a\u64cd\u4f5c\u6210\u529f（\u5373\u4f7f\u672a\u627e\u5230\u8981\u5220\u9664\u7684\u5bf9\u8c61）<\/p>\n

                  \n

                  6. get_kb_detail(session, kb_name)<\/h4>\n

                  🎯 \u529f\u80fd：<\/h5>\n

                  \u83b7\u53d6\u77e5\u8bc6\u5e93\u7684\u5b8c\u6574\u4fe1\u606f，\u5305\u62ec：<\/p>\n

                    \n
                  • \u540d\u79f0<\/li>\n
                  • \u7b80\u4ecb<\/li>\n
                  • \u5411\u91cf\u5e93\u7c7b\u578b<\/li>\n
                  • \u5d4c\u5165\u6a21\u578b<\/li>\n
                  • \u6587\u4ef6\u6570\u91cf<\/li>\n
                  • \u521b\u5efa\u65f6\u95f4<\/li>\n<\/ul>\n
                    \u2705 \u8fd4\u56de\u503c：<\/h5>\n
                      \n
                    • \u5b58\u5728\u65f6\u8fd4\u56de\u5b57\u5178：{<\/span>
                      \n "kb_name"<\/span>:<\/span> "test_kb"<\/span>,<\/span>
                      \n "kb_info"<\/span>:<\/span> "\u8fd9\u662f\u4e00\u4e2a\u7528\u4e8e\u6d4b\u8bd5\u7684\u77e5\u8bc6\u5e93"<\/span>,<\/span>
                      \n "vs_type"<\/span>:<\/span> "FAISS"<\/span>,<\/span>
                      \n "embed_model"<\/span>:<\/span> "text-embedding-ada-002"<\/span>,<\/span>
                      \n "file_count"<\/span>:<\/span> 0<\/span>,<\/span>
                      \n "create_time"<\/span>:<\/span> datetime.<\/span>datetime(<\/span>.<\/span>.<\/span>.<\/span>)<\/span>
                      \n}<\/span>\n <\/li>\n
                    • \u4e0d\u5b58\u5728\u65f6\u8fd4\u56de\u7a7a\u5b57\u5178 {}<\/li>\n<\/ul>\n
                      \n

                      🔁 \u4e09\u3001\u88c5\u9970\u5668\u673a\u5236：@with_session<\/h3>\n

                      @with_session<\/span>
                      \ndef<\/span> add_kb_to_db<\/span>(<\/span>session,<\/span> kb_name,<\/span> kb_info,<\/span> vs_type,<\/span> embed_model)<\/span>:<\/span><\/p>\n

                      🧩 \u4f5c\u7528：<\/h4>\n
                        \n
                      • \u81ea\u52a8\u4e3a\u4f60\u6253\u5f00\u6570\u636e\u5e93\u4f1a\u8bdd（session）<\/li>\n
                      • \u51fd\u6570\u6267\u884c\u5b8c\u6bd5\u540e\u81ea\u52a8\u63d0\u4ea4\u4e8b\u52a1\u6216\u56de\u6eda\u5f02\u5e38<\/li>\n
                      • \u907f\u514d\u624b\u52a8\u7ba1\u7406 session，\u63d0\u9ad8\u4ee3\u7801\u53ef\u7ef4\u62a4\u6027<\/li>\n<\/ul>\n

                        💡 \u7c7b\u4f3c\u4e8e\u4e0a\u4e0b\u6587\u7ba1\u7406\u5668：<\/h4>\n

                        with<\/span> get_db(<\/span>)<\/span> as<\/span> session:<\/span>
                        \n # \u6267\u884c\u6570\u636e\u5e93\u64cd\u4f5c<\/span><\/p>\n

                        \n

                        📐 \u56db\u3001ORM \u6a21\u578b\u7ed3\u6784（\u6765\u81ea knowledge_base_model.py）<\/h3>\n

                        \u4f60\u4f7f\u7528\u7684 KnowledgeBaseModel \u5e94\u8be5\u662f\u5982\u4e0b\u7ed3\u6784（\u7b80\u5316\u7248）：<\/p>\n

                        class<\/span> KnowledgeBaseModel<\/span>(<\/span>Base)<\/span>:<\/span>
                        \n __tablename__ =<\/span> 'knowledge_base'<\/span>
                        \n id<\/span> =<\/span> Column(<\/span>Integer,<\/span> primary_key=<\/span>True<\/span>,<\/span> autoincrement=<\/span>True<\/span>)<\/span>
                        \n kb_name =<\/span> Column(<\/span>String(<\/span>50<\/span>)<\/span>,<\/span> unique=<\/span>True<\/span>,<\/span> comment=<\/span>'\u77e5\u8bc6\u5e93\u540d\u79f0'<\/span>)<\/span>
                        \n kb_info =<\/span> Column(<\/span>String(<\/span>200<\/span>)<\/span>,<\/span> comment=<\/span>'\u77e5\u8bc6\u5e93\u7b80\u4ecb'<\/span>)<\/span>
                        \n vs_type =<\/span> Column(<\/span>String(<\/span>50<\/span>)<\/span>,<\/span> comment=<\/span>'\u5411\u91cf\u5e93\u7c7b\u578b'<\/span>)<\/span>
                        \n embed_model =<\/span> Column(<\/span>String(<\/span>50<\/span>)<\/span>,<\/span> comment=<\/span>'\u5d4c\u5165\u6a21\u578b\u540d\u79f0'<\/span>)<\/span>
                        \n file_count =<\/span> Column(<\/span>Integer,<\/span> default=<\/span>0<\/span>,<\/span> comment=<\/span>'\u6587\u4ef6\u6570\u91cf'<\/span>)<\/span>
                        \n create_time =<\/span> Column(<\/span>DateTime,<\/span> default=<\/span>func.<\/span>now(<\/span>)<\/span>,<\/span> comment=<\/span>'\u521b\u5efa\u65f6\u95f4'<\/span>)<\/span><\/p>\n

                        \n

                        🧪 \u4e94\u3001\u6d4b\u8bd5\u5165\u53e3\u51fd\u6570（if name == \u201cmain\u201d）<\/h3>\n

                        \u8fd9\u662f\u7a0b\u5e8f\u7684\u4e3b\u5165\u53e3，\u7528\u4e8e\u8fd0\u884c\u6d4b\u8bd5\u6d41\u7a0b\u3002<\/p>\n

                        \u2705 \u6d4b\u8bd5\u6b65\u9aa4\u5982\u4e0b：<\/h4>\n
                      • \n

                        \u6dfb\u52a0\u77e5\u8bc6\u5e93<\/p>\n

                          \n
                        • \u4f7f\u7528 add_kb_to_db() \u6dfb\u52a0\u4e00\u4e2a\u540d\u4e3a test_kb \u7684\u77e5\u8bc6\u5e93<\/li>\n<\/ul>\n<\/li>\n
                        • \n

                          \u68c0\u67e5\u662f\u5426\u5b58\u5728<\/p>\n

                            \n
                          • \u4f7f\u7528 kb_exists() \u5224\u65ad\u77e5\u8bc6\u5e93\u662f\u5426\u5165\u5e93\u6210\u529f<\/li>\n<\/ul>\n<\/li>\n
                          • \n

                            \u83b7\u53d6\u8be6\u7ec6\u4fe1\u606f<\/p>\n

                              \n
                            • \u4f7f\u7528 get_kb_detail() \u8f93\u51fa\u5f53\u524d\u77e5\u8bc6\u5e93\u7684\u6240\u6709\u5b57\u6bb5\u4fe1\u606f<\/li>\n<\/ul>\n<\/li>\n
                            • \n

                              \u52a0\u8f7d\u57fa\u672c\u4fe1\u606f<\/p>\n

                                \n
                              • \u4f7f\u7528 load_kb_from_db() \u83b7\u53d6 kb_name, vs_type, embed_model<\/li>\n<\/ul>\n<\/li>\n
                              • \n

                                \u5217\u51fa\u6240\u6709\u77e5\u8bc6\u5e93<\/p>\n

                                  \n
                                • \u4f7f\u7528 list_kbs_from_db() \u83b7\u53d6\u5f53\u524d\u6570\u636e\u5e93\u4e2d\u6240\u6709\u77e5\u8bc6\u5e93\u540d\u79f0<\/li>\n<\/ul>\n<\/li>\n
                                • \n

                                  \u5220\u9664\u77e5\u8bc6\u5e93<\/p>\n

                                    \n
                                  • \u4f7f\u7528 delete_kb_from_db() \u5220\u9664\u521a\u6dfb\u52a0\u7684\u77e5\u8bc6\u5e93<\/li>\n<\/ul>\n<\/li>\n
                                  • \n

                                    \u518d\u6b21\u68c0\u67e5\u662f\u5426\u5b58\u5728<\/p>\n

                                      \n
                                    • \u786e\u8ba4\u5220\u9664\u662f\u5426\u6210\u529f<\/li>\n<\/ul>\n<\/li>\n
                                      \n

                                      📋 \u516d\u3001\u6d4b\u8bd5\u6d41\u7a0b\u793a\u610f<\/h3>\n

                                      🧪 \u5f00\u59cb\u6d4b\u8bd5\u77e5\u8bc6\u5e93\u6570\u636e\u5e93\u64cd\u4f5c\u51fd\u6570…
                                      \n📌 \u6b63\u5728\u6dfb\u52a0\u77e5\u8bc6\u5e93：test_kb
                                      \n\u2705 \u6dfb\u52a0\u5b8c\u6210
                                      \n🔍 \u77e5\u8bc6\u5e93 test_kb \u662f\u5426\u5b58\u5728？\u662f
                                      \n📝 \u83b7\u53d6\u77e5\u8bc6\u5e93 test_kb \u7684\u8be6\u7ec6\u4fe1\u606f
                                      \n🧠 \u52a0\u8f7d\u77e5\u8bc6\u5e93\u4fe1\u606f：test_kb, FAISS, text-embedding-ada-002
                                      \n📋 \u5f53\u524d\u6570\u636e\u5e93\u4e2d\u7684\u77e5\u8bc6\u5e93\u5217\u8868：
                                      \n['test_kb']
                                      \n🗑\ufe0f \u6b63\u5728\u5220\u9664\u77e5\u8bc6\u5e93：test_kb
                                      \n\u2705 \u5220\u9664\u5b8c\u6210
                                      \n🔍 \u5220\u9664\u540e，\u77e5\u8bc6\u5e93 test_kb \u662f\u5426\u8fd8\u5b58\u5728？\u5426
                                      \n🎉 \u6240\u6709\u6d4b\u8bd5\u901a\u8fc7！<\/p>\n

                                      \n

                                      📦 \u4e03\u3001\u9002\u7528\u573a\u666f\u4e0e\u6269\u5c55\u5efa\u8bae<\/h3>\n

                                      \u2705 \u9002\u7528\u573a\u666f：<\/h4>\n\n\u573a\u666f\u63cf\u8ff0<\/tr>\n\n\n\n\n\n
                                      🧠 AI \u52a9\u624b\u540e\u53f0<\/td>\n\u7ba1\u7406\u591a\u4e2a\u77e5\u8bc6\u5e93，\u652f\u6301\u6587\u6863\u95ee\u7b54<\/td>\n<\/tr>\n
                                      📄 RAG \u67b6\u6784<\/td>\n\u8bb0\u5f55\u6bcf\u4e2a\u77e5\u8bc6\u5e93\u7684\u5411\u91cf\u5e93\u7c7b\u578b\u4e0e\u5d4c\u5165\u6a21\u578b<\/td>\n<\/tr>\n
                                      📈 \u6570\u636e\u7edf\u8ba1<\/td>\n\u7edf\u8ba1\u77e5\u8bc6\u5e93\u6587\u4ef6\u6570\u91cf\u3001\u521b\u5efa\u65f6\u95f4\u7b49<\/td>\n<\/tr>\n
                                      🧩 \u591a\u4efb\u52a1\u9002\u914d<\/td>\n\u4e0d\u540c\u77e5\u8bc6\u5e93\u4f7f\u7528\u4e0d\u540c embedding \u6a21\u578b<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

                                      🛠\ufe0f \u63a8\u8350\u6269\u5c55\u65b9\u5411：<\/h4>\n\n\u6269\u5c55\u70b9\u63cf\u8ff0<\/tr>\n\n\n\n\n\n\n
                                      \u2705 \u589e\u52a0 hash \u6821\u9a8c\u5b57\u6bb5<\/td>\n\u907f\u514d\u91cd\u590d\u4e0a\u4f20\u76f8\u540c\u6587\u4ef6<\/td>\n<\/tr>\n
                                      \u2705 \u6dfb\u52a0\u6587\u4ef6\u8def\u5f84\u5b57\u6bb5<\/td>\nfile_path TEXT，\u65b9\u4fbf\u5b9a\u4f4d\u5b9e\u9645\u6587\u4ef6\u4f4d\u7f6e<\/td>\n<\/tr>\n
                                      \u2705 \u652f\u6301\u8f6f\u5220\u9664<\/td>\nis_deleted BOOLEAN DEFAULT False<\/td>\n<\/tr>\n
                                      \u2705 \u652f\u6301\u5f02\u6b65\u72b6\u6001\u6807\u8bb0<\/td>\nstatus ENUM('pending', 'processing', 'done')<\/td>\n<\/tr>\n
                                      \u2705 \u591a\u7ebf\u7a0b\u5b89\u5168\u4f18\u5316<\/td>\n\u63d0\u5347\u5927\u89c4\u6a21\u5e76\u53d1\u8bbf\u95ee\u6548\u7387<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
                                      \n

                                      📊 \u516b\u3001\u5b9e\u6218\u4ee3\u7801\u90e8\u5206\u5c55\u793a：<\/h3>\n

                                      #!\/usr\/bin\/env python<\/span>
                                      \n# coding=utf-8<\/span><\/p>\n

                                      """
                                      \n@author: zgw
                                      \n@date: 2025\/6\/7 16:07
                                      \n@source from:
                                      \n"""<\/span>
                                      \nfrom<\/span> server.<\/span>db.<\/span>models.<\/span>knowledge_base_model import<\/span> KnowledgeBaseModel
                                      \nfrom<\/span> server.<\/span>db.<\/span>session import<\/span> with_session<\/p>\n

                                      @with_session<\/span>
                                      \ndef<\/span> add_kb_to_db<\/span>(<\/span>session,<\/span> kb_name,<\/span> kb_info,<\/span> vs_type,<\/span> embed_model)<\/span>:<\/span>
                                      \n # \u521b\u5efa\u77e5\u8bc6\u5e93\u5b9e\u4f8b<\/span>
                                      \n kb =<\/span> session.<\/span>query(<\/span>KnowledgeBaseModel)<\/span>.<\/span>filter<\/span>(<\/span>KnowledgeBaseModel.<\/span>kb_name.<\/span>ilike(<\/span>kb_name)<\/span>)<\/span>.<\/span>first(<\/span>)<\/span>
                                      \n if<\/span> not<\/span> kb:<\/span>
                                      \n kb =<\/span> KnowledgeBaseModel(<\/span>kb_name=<\/span>kb_name,<\/span> kb_info=<\/span>kb_info,<\/span> vs_type=<\/span>vs_type,<\/span> embed_model=<\/span>embed_model)<\/span>
                                      \n session.<\/span>add(<\/span>kb)<\/span>
                                      \n else<\/span>:<\/span> # update kb with new vs_type and embed_model<\/span>
                                      \n kb.<\/span>kb_info =<\/span> kb_info
                                      \n kb.<\/span>vs_type =<\/span> vs_type
                                      \n kb.<\/span>embed_model =<\/span> embed_model
                                      \n return<\/span> True<\/span><\/p>\n

                                      @with_session<\/span>
                                      \ndef<\/span> list_kbs_from_db<\/span>(<\/span>session,<\/span> min_file_count:<\/span> int<\/span> =<\/span> –<\/span>1<\/span>)<\/span>:<\/span>
                                      \n kbs =<\/span> session.<\/span>query(<\/span>KnowledgeBaseModel.<\/span>kb_name)<\/span>.<\/span>filter<\/span>(<\/span>KnowledgeBaseModel.<\/span>file_count ><\/span> min_file_count)<\/span>.<\/span>all<\/span>(<\/span>)<\/span>
                                      \n kbs =<\/span> [<\/span>kb[<\/span>0<\/span>]<\/span> for<\/span> kb in<\/span> kbs]<\/span>
                                      \n return<\/span> kbs<\/p>\n

                                      @with_session<\/span>
                                      \ndef<\/span> kb_exists<\/span>(<\/span>session,<\/span> kb_name)<\/span>:<\/span>
                                      \n kb =<\/span> session.<\/span>query(<\/span>KnowledgeBaseModel)<\/span>.<\/span>filter<\/span>(<\/span>KnowledgeBaseModel.<\/span>kb_name.<\/span>ilike(<\/span>kb_name)<\/span>)<\/span>.<\/span>first(<\/span>)<\/span>
                                      \n status =<\/span> True<\/span> if<\/span> kb else<\/span> False<\/span>
                                      \n return<\/span> status<\/p>\n

                                      @with_session<\/span>
                                      \ndef<\/span> load_kb_from_db<\/span>(<\/span>session,<\/span> kb_name)<\/span>:<\/span>
                                      \n kb =<\/span> session.<\/span>query(<\/span>KnowledgeBaseModel)<\/span>.<\/span>filter<\/span>(<\/span>KnowledgeBaseModel.<\/span>kb_name.<\/span>ilike(<\/span>kb_name)<\/span>)<\/span>.<\/span>first(<\/span>)<\/span>
                                      \n if<\/span> kb:<\/span>
                                      \n kb_name,<\/span> vs_type,<\/span> embed_model =<\/span> kb.<\/span>kb_name,<\/span> kb.<\/span>vs_type,<\/span> kb.<\/span>embed_model
                                      \n else<\/span>:<\/span>
                                      \n kb_name,<\/span> vs_type,<\/span> embed_model =<\/span> None<\/span>,<\/span> None<\/span>,<\/span> None<\/span>
                                      \n return<\/span> kb_name,<\/span> vs_type,<\/span> embed_model<\/p>\n

                                      @with_session<\/span>
                                      \ndef<\/span> delete_kb_from_db<\/span>(<\/span>session,<\/span> kb_name)<\/span>:<\/span>
                                      \n kb =<\/span> session.<\/span>query(<\/span>KnowledgeBaseModel)<\/span>.<\/span>filter<\/span>(<\/span>KnowledgeBaseModel.<\/span>kb_name.<\/span>ilike(<\/span>kb_name)<\/span>)<\/span>.<\/span>first(<\/span>)<\/span>
                                      \n if<\/span> kb:<\/span>
                                      \n session.<\/span>delete(<\/span>kb)<\/span>
                                      \n return<\/span> True<\/span><\/p>\n

                                      @with_session<\/span>
                                      \ndef<\/span> get_kb_detail<\/span>(<\/span>session,<\/span> kb_name:<\/span> str<\/span>)<\/span> –<\/span>><\/span> dict<\/span>:<\/span>
                                      \n kb:<\/span> KnowledgeBaseModel =<\/span> session.<\/span>query(<\/span>KnowledgeBaseModel)<\/span>.<\/span>filter<\/span>(<\/span>KnowledgeBaseModel.<\/span>kb_name.<\/span>ilike(<\/span>kb_name)<\/span>)<\/span>.<\/span>first(<\/span>)<\/span>
                                      \n if<\/span> kb:<\/span>
                                      \n return<\/span> {<\/span>
                                      \n "kb_name"<\/span>:<\/span> kb.<\/span>kb_name,<\/span>
                                      \n "kb_info"<\/span>:<\/span> kb.<\/span>kb_info,<\/span>
                                      \n "vs_type"<\/span>:<\/span> kb.<\/span>vs_type,<\/span>
                                      \n "embed_model"<\/span>:<\/span> kb.<\/span>embed_model,<\/span>
                                      \n "file_count"<\/span>:<\/span> kb.<\/span>file_count,<\/span>
                                      \n "create_time"<\/span>:<\/span> kb.<\/span>create_time,<\/span>
                                      \n }<\/span>
                                      \n else<\/span>:<\/span>
                                      \n return<\/span> {<\/span>}<\/span><\/p>\n

                                      # ========================<\/span>
                                      \n# \u6d4b\u8bd5\u5165\u53e3<\/span>
                                      \n# ========================<\/span><\/p>\n

                                      if<\/span> __name__ ==<\/span> "__main__"<\/span>:<\/span>
                                      \n test_kb_name =<\/span> "test_kb"<\/span>
                                      \n test_kb_info =<\/span> "\u8fd9\u662f\u4e00\u4e2a\u7528\u4e8e\u6d4b\u8bd5\u7684\u77e5\u8bc6\u5e93"<\/span>
                                      \n test_vs_type =<\/span> "FAISS"<\/span>
                                      \n test_embed_model =<\/span> "text-embedding-ada-002"<\/span><\/p>\n

                                      print<\/span>(<\/span>"🧪 \u5f00\u59cb\u6d4b\u8bd5\u77e5\u8bc6\u5e93\u6570\u636e\u5e93\u64cd\u4f5c\u51fd\u6570…"<\/span>)<\/span><\/p>\n

                                      # 1. \u6dfb\u52a0\u77e5\u8bc6\u5e93<\/span>
                                      \n print<\/span>(<\/span>f"📌 \u6b63\u5728\u6dfb\u52a0\u77e5\u8bc6\u5e93：<\/span>{<\/span>test_kb_name}<\/span><\/span>"<\/span><\/span>)<\/span>
                                      \n add_kb_to_db(<\/span>
                                      \n kb_name=<\/span>test_kb_name,<\/span>
                                      \n kb_info=<\/span>test_kb_info,<\/span>
                                      \n vs_type=<\/span>test_vs_type,<\/span>
                                      \n embed_model=<\/span>test_embed_model
                                      \n )<\/span>
                                      \n print<\/span>(<\/span>"\u2705 \u6dfb\u52a0\u5b8c\u6210"<\/span>)<\/span><\/p>\n

                                      # 2. \u68c0\u67e5\u662f\u5426\u5b58\u5728<\/span>
                                      \n exists =<\/span> kb_exists(<\/span>kb_name=<\/span>test_kb_name)<\/span>
                                      \n print<\/span>(<\/span>f"🔍 \u77e5\u8bc6\u5e93 <\/span>{<\/span>test_kb_name}<\/span><\/span> \u662f\u5426\u5b58\u5728？<\/span>{<\/span>'\u662f'<\/span> if<\/span> exists else<\/span> '\u5426'<\/span>}<\/span><\/span>"<\/span><\/span>)<\/span>
                                      \n assert<\/span> exists is<\/span> True<\/span>,<\/span> "\u274c \u6dfb\u52a0\u77e5\u8bc6\u5e93\u5931\u8d25"<\/span><\/p>\n

                                      # 3. \u83b7\u53d6\u8be6\u7ec6\u4fe1\u606f<\/span>
                                      \n print<\/span>(<\/span>f"📝 \u83b7\u53d6\u77e5\u8bc6\u5e93 <\/span>{<\/span>test_kb_name}<\/span><\/span> \u7684\u8be6\u7ec6\u4fe1\u606f"<\/span><\/span>)<\/span>
                                      \n detail =<\/span> get_kb_detail(<\/span>test_kb_name)<\/span>
                                      \n print<\/span>(<\/span>"Detail:"<\/span>,<\/span> detail)<\/span><\/p>\n

                                      # 4. \u52a0\u8f7d\u57fa\u672c\u4fe1\u606f<\/span>
                                      \n kb_name,<\/span> vs_type,<\/span> embed_model =<\/span> load_kb_from_db(<\/span>test_kb_name)<\/span>
                                      \n print<\/span>(<\/span>f"🧠 \u52a0\u8f7d\u77e5\u8bc6\u5e93\u4fe1\u606f：<\/span>{<\/span>kb_name}<\/span><\/span>, <\/span>{<\/span>vs_type}<\/span><\/span>, <\/span>{<\/span>embed_model}<\/span><\/span>"<\/span><\/span>)<\/span>
                                      \n assert<\/span> kb_name ==<\/span> test_kb_name,<\/span> "\u274c \u52a0\u8f7d\u77e5\u8bc6\u5e93\u540d\u79f0\u9519\u8bef"<\/span>
                                      \n assert<\/span> vs_type ==<\/span> test_vs_type,<\/span> "\u274c \u5411\u91cf\u5e93\u7c7b\u578b\u4e0d\u4e00\u81f4"<\/span>
                                      \n assert<\/span> embed_model ==<\/span> test_embed_model,<\/span> "\u274c \u5d4c\u5165\u6a21\u578b\u4e0d\u4e00\u81f4"<\/span><\/p>\n

                                      # 5. \u5217\u51fa\u6240\u6709\u77e5\u8bc6\u5e93<\/span>
                                      \n print<\/span>(<\/span>"📋 \u5f53\u524d\u6570\u636e\u5e93\u4e2d\u7684\u77e5\u8bc6\u5e93\u5217\u8868："<\/span>)<\/span>
                                      \n all_kbs =<\/span> list_kbs_from_db(<\/span>min_file_count=<\/span>–<\/span>1<\/span>)<\/span>
                                      \n print<\/span>(<\/span>all_kbs)<\/span>
                                      \n assert<\/span> test_kb_name in<\/span> all_kbs,<\/span> "\u274c \u5217\u8868\u4e2d\u672a\u627e\u5230\u521a\u6dfb\u52a0\u7684\u77e5\u8bc6\u5e93"<\/span><\/p>\n

                                      # 6. \u5220\u9664\u77e5\u8bc6\u5e93<\/span>
                                      \n print<\/span>(<\/span>f"🗑\ufe0f \u6b63\u5728\u5220\u9664\u77e5\u8bc6\u5e93：<\/span>{<\/span>test_kb_name}<\/span><\/span>"<\/span><\/span>)<\/span>
                                      \n delete_kb_from_db(<\/span>test_kb_name)<\/span>
                                      \n print<\/span>(<\/span>"\u2705 \u5220\u9664\u5b8c\u6210"<\/span>)<\/span><\/p>\n

                                      # 7. \u518d\u6b21\u68c0\u67e5\u662f\u5426\u5b58\u5728<\/span>
                                      \n exists_after_delete =<\/span> kb_exists(<\/span>kb_name=<\/span>test_kb_name)<\/span>
                                      \n print<\/span>(<\/span>f"🔍 \u5220\u9664\u540e，\u77e5\u8bc6\u5e93 <\/span>{<\/span>test_kb_name}<\/span><\/span> \u662f\u5426\u8fd8\u5b58\u5728？<\/span>{<\/span>'\u662f'<\/span> if<\/span> exists_after_delete else<\/span> '\u5426'<\/span>}<\/span><\/span>"<\/span><\/span>)<\/span>
                                      \n assert<\/span> exists_after_delete is<\/span> False<\/span>,<\/span> "\u274c \u5220\u9664\u5931\u8d25"<\/span><\/p>\n

                                      print<\/span>(<\/span>"🎉 \u6240\u6709\u6d4b\u8bd5\u901a\u8fc7！"<\/span>)<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

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