Fix: fix document concurrent upload issue (#6095)

### What problem does this PR solve?

Resolve document concurrent upload issue. #6039 

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

api/db/services/document_service.py

@@ -13,33 +13,30 @@
 #  See the License for the specific language governing permissions and
 #  limitations under the License.
 #
-import logging
-import xxhash
 import json
+import logging
 import random
 import re
 from concurrent.futures import ThreadPoolExecutor
 from copy import deepcopy
 from datetime import datetime
 from io import BytesIO
-import trio
 
+import trio
+import xxhash
 from peewee import fn
 
-from api.db.db_utils import bulk_insert_into_db
 from api import settings
-from api.utils import current_timestamp, get_format_time, get_uuid
-from rag.settings import SVR_QUEUE_NAME
-from rag.utils.storage_factory import STORAGE_IMPL
-from rag.nlp import search, rag_tokenizer
-
-from api.db import FileType, TaskStatus, ParserType, LLMType
-from api.db.db_models import DB, Knowledgebase, Tenant, Task, UserTenant
-from api.db.db_models import Document
+from api.db import FileType, LLMType, ParserType, StatusEnum, TaskStatus
+from api.db.db_models import DB, Document, Knowledgebase, Task, Tenant, UserTenant
+from api.db.db_utils import bulk_insert_into_db
 from api.db.services.common_service import CommonService
 from api.db.services.knowledgebase_service import KnowledgebaseService
-from api.db import StatusEnum
+from api.utils import current_timestamp, get_format_time, get_uuid
+from rag.nlp import rag_tokenizer, search
+from rag.settings import SVR_QUEUE_NAME
 from rag.utils.redis_conn import REDIS_CONN
+from rag.utils.storage_factory import STORAGE_IMPL
 
 
 class DocumentService(CommonService):
@@ -96,9 +93,7 @@ class DocumentService(CommonService):
     def insert(cls, doc):
         if not cls.save(**doc):
             raise RuntimeError("Database error (Document)!")
-        e, kb = KnowledgebaseService.get_by_id(doc["kb_id"])
-        if not KnowledgebaseService.update_by_id(
-                kb.id, {"doc_num": kb.doc_num + 1}):
+        if not KnowledgebaseService.atomic_increase_doc_num_by_id(doc["kb_id"]):
             raise RuntimeError("Database error (Knowledgebase)!")
         return Document(**doc)
 
@@ -374,6 +369,7 @@ class DocumentService(CommonService):
                     "progress_msg": "Task is queued...",
                     "process_begin_at": get_format_time()
                     })
+
     @classmethod
     @DB.connection_context()
     def update_meta_fields(cls, doc_id, meta_fields):
@@ -480,13 +476,13 @@ def queue_raptor_o_graphrag_tasks(doc, ty):
 
 
 def doc_upload_and_parse(conversation_id, file_objs, user_id):
-    from rag.app import presentation, picture, naive, audio, email
+    from api.db.services.api_service import API4ConversationService
+    from api.db.services.conversation_service import ConversationService
     from api.db.services.dialog_service import DialogService
     from api.db.services.file_service import FileService
     from api.db.services.llm_service import LLMBundle
     from api.db.services.user_service import TenantService
-    from api.db.services.api_service import API4ConversationService
-    from api.db.services.conversation_service import ConversationService
+    from rag.app import audio, email, naive, picture, presentation
 
     e, conv = ConversationService.get_by_id(conversation_id)
     if not e:

api/db/services/knowledgebase_service.py

@@ -13,11 +13,15 @@
 #  See the License for the specific language governing permissions and
 #  limitations under the License.
 #
-from api.db import StatusEnum, TenantPermission
-from api.db.db_models import Knowledgebase, DB, Tenant, User, UserTenant,Document
-from api.db.services.common_service import CommonService
+from datetime import datetime
+
 from peewee import fn
 
+from api.db import StatusEnum, TenantPermission
+from api.db.db_models import DB, Document, Knowledgebase, Tenant, User, UserTenant
+from api.db.services.common_service import CommonService
+from api.utils import current_timestamp, datetime_format
+
 
 class KnowledgebaseService(CommonService):
     """Service class for managing knowledge base operations.
@@ -381,3 +385,12 @@ class KnowledgebaseService(CommonService):
         kbs = kbs.dicts()
         return list(kbs)
 
+    @classmethod
+    @DB.connection_context()
+    def atomic_increase_doc_num_by_id(cls, kb_id):
+        data = {}
+        data["update_time"] = current_timestamp()
+        data["update_date"] = datetime_format(datetime.now())
+        data["doc_num"] = cls.model.doc_num + 1
+        num = cls.model.update(data).where(cls.model.id == kb_id).execute()
+        return num