import mysql.connector import json import threading from datetime import datetime from utils import generate_uuid from database import DB_CONFIG # 解析相关模块 from .document_parser import perform_parse, _update_document_progress class KnowledgebaseService: @classmethod def _get_db_connection(cls): """创建数据库连接""" return mysql.connector.connect(**DB_CONFIG) @classmethod def get_knowledgebase_list(cls, page=1, size=10, name=''): """获取知识库列表""" conn = cls._get_db_connection() cursor = conn.cursor(dictionary=True) query = """ SELECT k.id, k.name, k.description, k.create_date, k.update_date, k.doc_num, k.language, k.permission FROM knowledgebase k """ params = [] if name: query += " WHERE k.name LIKE %s" params.append(f"%{name}%") query += " LIMIT %s OFFSET %s" params.extend([size, (page-1)*size]) cursor.execute(query, params) results = cursor.fetchall() # 处理结果 for result in results: # 处理空描述 if not result.get('description'): result['description'] = "暂无描述" # 处理时间格式 if result.get('create_date'): if isinstance(result['create_date'], datetime): result['create_date'] = result['create_date'].strftime('%Y-%m-%d %H:%M:%S') elif isinstance(result['create_date'], str): try: # 尝试解析已有字符串格式 datetime.strptime(result['create_date'], '%Y-%m-%d %H:%M:%S') except ValueError: result['create_date'] = "" # 获取总数 count_query = "SELECT COUNT(*) as total FROM knowledgebase" if name: count_query += " WHERE name LIKE %s" cursor.execute(count_query, params[:1] if name else []) total = cursor.fetchone()['total'] cursor.close() conn.close() return { 'list': results, 'total': total } @classmethod def get_knowledgebase_detail(cls, kb_id): """获取知识库详情""" conn = cls._get_db_connection() cursor = conn.cursor(dictionary=True) query = """ SELECT k.id, k.name, k.description, k.create_date, k.update_date, k.doc_num FROM knowledgebase k WHERE k.id = %s """ cursor.execute(query, (kb_id,)) result = cursor.fetchone() if result: # 处理空描述 if not result.get('description'): result['description'] = "暂无描述" # 处理时间格式 if result.get('create_date'): if isinstance(result['create_date'], datetime): result['create_date'] = result['create_date'].strftime('%Y-%m-%d %H:%M:%S') elif isinstance(result['create_date'], str): try: datetime.strptime(result['create_date'], '%Y-%m-%d %H:%M:%S') except ValueError: result['create_date'] = "" cursor.close() conn.close() return result @classmethod def _check_name_exists(cls, name): """检查知识库名称是否已存在""" conn = cls._get_db_connection() cursor = conn.cursor() query = """ SELECT COUNT(*) as count FROM knowledgebase WHERE name = %s """ cursor.execute(query, (name,)) result = cursor.fetchone() cursor.close() conn.close() return result[0] > 0 @classmethod def create_knowledgebase(cls, **data): """创建知识库""" try: # 检查知识库名称是否已存在 exists = cls._check_name_exists(data['name']) if exists: raise Exception("知识库名称已存在") conn = cls._get_db_connection() cursor = conn.cursor(dictionary=True) # 获取最早的用户ID作为tenant_id和created_by tenant_id = None created_by = None try: query_earliest_user = """ SELECT id FROM user WHERE create_time = (SELECT MIN(create_time) FROM user) LIMIT 1 """ cursor.execute(query_earliest_user) earliest_user = cursor.fetchone() if earliest_user: tenant_id = earliest_user['id'] created_by = earliest_user['id'] # 使用最早用户ID作为created_by print(f"使用创建时间最早的用户ID作为tenant_id和created_by: {tenant_id}") else: # 如果找不到用户，使用默认值 tenant_id = "system" created_by = "system" print(f"未找到用户, 使用默认值作为tenant_id和created_by: {tenant_id}") except Exception as e: print(f"获取用户ID失败: {str(e)}，使用默认值") tenant_id = "system" created_by = "system" current_time = datetime.now() create_date = current_time.strftime('%Y-%m-%d %H:%M:%S') create_time = int(current_time.timestamp() * 1000) # 毫秒级时间戳 update_date = create_date update_time = create_time # 完整的字段列表 query = """ INSERT INTO knowledgebase ( id, create_time, create_date, update_time, update_date, avatar, tenant_id, name, language, description, embd_id, permission, created_by, doc_num, token_num, chunk_num, similarity_threshold, vector_similarity_weight, parser_id, parser_config, pagerank, status ) VALUES ( %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s ) """ # 设置默认值 default_parser_config = json.dumps({ "layout_recognize": "DeepDOC", "chunk_token_num": 512, "delimiter": "\n!?;。；！？", "auto_keywords": 0, "auto_questions": 0, "html4excel": False, "raptor": {"use_raptor": False}, "graphrag": {"use_graphrag": False} }) kb_id = generate_uuid() cursor.execute(query, ( kb_id, # id create_time, # create_time create_date, # create_date update_time, # update_time update_date, # update_date None, # avatar tenant_id, # tenant_id data['name'], # name data.get('language', 'Chinese'), # language data.get('description', ''), # description 'bge-m3:latest@Ollama', # embd_id data.get('permission', 'me'), # permission created_by, # created_by - 使用内部获取的值 0, # doc_num 0, # token_num 0, # chunk_num 0.7, # similarity_threshold 0.3, # vector_similarity_weight 'naive', # parser_id default_parser_config, # parser_config 0, # pagerank '1' # status )) conn.commit() cursor.close() conn.close() # 返回创建后的知识库详情 return cls.get_knowledgebase_detail(kb_id) except Exception as e: print(f"创建知识库失败: {str(e)}") raise Exception(f"创建知识库失败: {str(e)}") @classmethod def update_knowledgebase(cls, kb_id, **data): """更新知识库""" try: # 直接通过ID检查知识库是否存在 kb = cls.get_knowledgebase_detail(kb_id) if not kb: return None conn = cls._get_db_connection() cursor = conn.cursor() # 如果要更新名称，先检查名称是否已存在 if data.get('name') and data['name'] != kb['name']: exists = cls._check_name_exists(data['name']) if exists: raise Exception("知识库名称已存在") # 构建更新语句 update_fields = [] params = [] if data.get('name'): update_fields.append("name = %s") params.append(data['name']) if 'description' in data: update_fields.append("description = %s") params.append(data['description']) # 更新时间 current_time = datetime.now() update_date = current_time.strftime('%Y-%m-%d %H:%M:%S') update_fields.append("update_date = %s") params.append(update_date) # 如果没有要更新的字段，直接返回 if not update_fields: return kb_id # 构建并执行更新语句 query = f""" UPDATE knowledgebase SET {', '.join(update_fields)} WHERE id = %s """ params.append(kb_id) cursor.execute(query, params) conn.commit() cursor.close() conn.close() # 返回更新后的知识库详情 return cls.get_knowledgebase_detail(kb_id) except Exception as e: print(f"更新知识库失败: {str(e)}") raise Exception(f"更新知识库失败: {str(e)}") @classmethod def delete_knowledgebase(cls, kb_id): """删除知识库""" try: conn = cls._get_db_connection() cursor = conn.cursor() # 先检查知识库是否存在 check_query = "SELECT id FROM knowledgebase WHERE id = %s" cursor.execute(check_query, (kb_id,)) if not cursor.fetchone(): raise Exception("知识库不存在") # 执行删除 delete_query = "DELETE FROM knowledgebase WHERE id = %s" cursor.execute(delete_query, (kb_id,)) conn.commit() cursor.close() conn.close() return True except Exception as e: print(f"删除知识库失败: {str(e)}") raise Exception(f"删除知识库失败: {str(e)}") @classmethod def batch_delete_knowledgebase(cls, kb_ids): """批量删除知识库""" try: conn = cls._get_db_connection() cursor = conn.cursor() # 检查所有ID是否存在 check_query = "SELECT id FROM knowledgebase WHERE id IN (%s)" % \ ','.join(['%s'] * len(kb_ids)) cursor.execute(check_query, kb_ids) existing_ids = [row[0] for row in cursor.fetchall()] if len(existing_ids) != len(kb_ids): missing_ids = set(kb_ids) - set(existing_ids) raise Exception(f"以下知识库不存在: {', '.join(missing_ids)}") # 执行批量删除 delete_query = "DELETE FROM knowledgebase WHERE id IN (%s)" % \ ','.join(['%s'] * len(kb_ids)) cursor.execute(delete_query, kb_ids) conn.commit() cursor.close() conn.close() return len(kb_ids) except Exception as e: print(f"批量删除知识库失败: {str(e)}") raise Exception(f"批量删除知识库失败: {str(e)}") @classmethod def get_knowledgebase_documents(cls, kb_id, page=1, size=10, name=''): """获取知识库下的文档列表""" try: conn = cls._get_db_connection() cursor = conn.cursor(dictionary=True) # 先检查知识库是否存在 check_query = "SELECT id FROM knowledgebase WHERE id = %s" cursor.execute(check_query, (kb_id,)) if not cursor.fetchone(): raise Exception("知识库不存在") # 查询文档列表 query = """ SELECT d.id, d.name, d.chunk_num, d.create_date, d.status, d.run, d.progress, d.parser_id, d.parser_config, d.meta_fields FROM document d WHERE d.kb_id = %s """ params = [kb_id] if name: query += " AND d.name LIKE %s" params.append(f"%{name}%") query += " ORDER BY d.create_date DESC LIMIT %s OFFSET %s" params.extend([size, (page-1)*size]) cursor.execute(query, params) results = cursor.fetchall() # 处理日期时间格式 for result in results: if result.get('create_date'): result['create_date'] = result['create_date'].strftime('%Y-%m-%d %H:%M:%S') # 获取总数 count_query = "SELECT COUNT(*) as total FROM document WHERE kb_id = %s" count_params = [kb_id] if name: count_query += " AND name LIKE %s" count_params.append(f"%{name}%") cursor.execute(count_query, count_params) total = cursor.fetchone()['total'] cursor.close() conn.close() return { 'list': results, 'total': total } except Exception as e: print(f"获取知识库文档列表失败: {str(e)}") raise Exception(f"获取知识库文档列表失败: {str(e)}") @classmethod def add_documents_to_knowledgebase(cls, kb_id, file_ids, created_by=None): """添加文档到知识库""" try: print(f"[DEBUG] 开始添加文档，参数: kb_id={kb_id}, file_ids={file_ids}") # 如果没有传入created_by，则获取最早的用户ID if created_by is None: conn = cls._get_db_connection() cursor = conn.cursor(dictionary=True) # 查询创建时间最早的用户ID query_earliest_user = """ SELECT id FROM user WHERE create_time = (SELECT MIN(create_time) FROM user) LIMIT 1 """ cursor.execute(query_earliest_user) earliest_user = cursor.fetchone() if earliest_user: created_by = earliest_user['id'] print(f"使用创建时间最早的用户ID: {created_by}") else: created_by = 'system' print("未找到用户, 使用默认用户ID: system") cursor.close() conn.close() # 检查知识库是否存在 kb = cls.get_knowledgebase_detail(kb_id) print(f"[DEBUG] 知识库检查结果: {kb}") if not kb: print(f"[ERROR] 知识库不存在: {kb_id}") raise Exception("知识库不存在") conn = cls._get_db_connection() cursor = conn.cursor() # 获取文件信息 file_query = """ SELECT id, name, location, size, type FROM file WHERE id IN (%s) """ % ','.join(['%s'] * len(file_ids)) print(f"[DEBUG] 执行文件查询SQL: {file_query}") print(f"[DEBUG] 查询参数: {file_ids}") try: cursor.execute(file_query, file_ids) files = cursor.fetchall() print(f"[DEBUG] 查询到的文件数据: {files}") except Exception as e: print(f"[ERROR] 文件查询失败: {str(e)}") raise if len(files) != len(file_ids): print(f"部分文件不存在: 期望={len(file_ids)}, 实际={len(files)}") raise Exception("部分文件不存在") # 添加文档记录 added_count = 0 for file in files: file_id = file[0] file_name = file[1] print(f"处理文件: id={file_id}, name={file_name}") file_location = file[2] file_size = file[3] file_type = file[4] # 检查文档是否已存在于知识库 check_query = """ SELECT COUNT(*) FROM document d JOIN file2document f2d ON d.id = f2d.document_id WHERE d.kb_id = %s AND f2d.file_id = %s """ cursor.execute(check_query, (kb_id, file_id)) exists = cursor.fetchone()[0] > 0 if exists: continue # 跳过已存在的文档 # 创建文档记录 doc_id = generate_uuid() current_datetime = datetime.now() create_time = int(current_datetime.timestamp() * 1000) # 毫秒级时间戳 current_date = current_datetime.strftime("%Y-%m-%d %H:%M:%S") # 格式化日期字符串 # 设置默认值 default_parser_id = "naive" default_parser_config = json.dumps({ "layout_recognize": "DeepDOC", "chunk_token_num": 512, "delimiter": "\n!?;。；！？", "auto_keywords": 0, "auto_questions": 0, "html4excel": False, "raptor": { "use_raptor": False }, "graphrag": { "use_graphrag": False } }) default_source_type = "local" # 插入document表 doc_query = """ INSERT INTO document ( id, create_time, create_date, update_time, update_date, thumbnail, kb_id, parser_id, parser_config, source_type, type, created_by, name, location, size, token_num, chunk_num, progress, progress_msg, process_begin_at, process_duation, meta_fields, run, status ) VALUES ( %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s ) """ doc_params = [ doc_id, create_time, current_date, create_time, current_date, # ID和时间 None, kb_id, default_parser_id, default_parser_config, default_source_type, # thumbnail到source_type file_type, created_by, file_name, file_location, file_size, # type到size 0, 0, 0.0, None, None, # token_num到process_begin_at 0.0, None, '0', '1' # process_duation到status ] cursor.execute(doc_query, doc_params) # 创建文件到文档的映射 f2d_id = generate_uuid() f2d_query = """ INSERT INTO file2document ( id, create_time, create_date, update_time, update_date, file_id, document_id ) VALUES ( %s, %s, %s, %s, %s, %s, %s ) """ f2d_params = [ f2d_id, create_time, current_date, create_time, current_date, file_id, doc_id ] cursor.execute(f2d_query, f2d_params) added_count += 1 # 更新知识库文档数量 if added_count > 0: try: update_query = """ UPDATE knowledgebase SET doc_num = doc_num + %s, update_date = %s WHERE id = %s """ cursor.execute(update_query, (added_count, current_date, kb_id)) conn.commit() # 先提交更新操作 except Exception as e: print(f"[WARNING] 更新知识库文档数量失败，但文档已添加: {str(e)}") cursor.close() conn.close() return { "added_count": added_count } except Exception as e: print(f"[ERROR] 添加文档失败: {str(e)}") print(f"[ERROR] 错误类型: {type(e)}") import traceback print(f"[ERROR] 堆栈信息: {traceback.format_exc()}") raise Exception(f"添加文档到知识库失败: {str(e)}") @classmethod def delete_document(cls, doc_id): """删除文档""" try: conn = cls._get_db_connection() cursor = conn.cursor() # 先检查文档是否存在 check_query = "SELECT kb_id FROM document WHERE id = %s" cursor.execute(check_query, (doc_id,)) result = cursor.fetchone() if not result: raise Exception("文档不存在") kb_id = result[0] # 删除文件到文档的映射 f2d_query = "DELETE FROM file2document WHERE document_id = %s" cursor.execute(f2d_query, (doc_id,)) # 删除文档 doc_query = "DELETE FROM document WHERE id = %s" cursor.execute(doc_query, (doc_id,)) # 更新知识库文档数量 update_query = """ UPDATE knowledgebase SET doc_num = doc_num - 1, update_date = %s WHERE id = %s """ current_date = datetime.now().strftime("%Y-%m-%d %H:%M:%S") cursor.execute(update_query, (current_date, kb_id)) conn.commit() cursor.close() conn.close() return True except Exception as e: print(f"[ERROR] 删除文档失败: {str(e)}") raise Exception(f"删除文档失败: {str(e)}") @classmethod def parse_document(cls, doc_id): """解析文档（调用解析逻辑）""" conn = None cursor = None try: # 1. 获取文档和文件信息 conn = cls._get_db_connection() cursor = conn.cursor(dictionary=True) # 查询文档信息 doc_query = """ SELECT d.id, d.name, d.location, d.type, d.kb_id, d.parser_id, d.parser_config, d.created_by FROM document d WHERE d.id = %s """ cursor.execute(doc_query, (doc_id,)) doc_info = cursor.fetchone() if not doc_info: raise Exception("文档不存在") # 获取关联的文件信息 (主要是 parent_id 作为 bucket_name) f2d_query = "SELECT file_id FROM file2document WHERE document_id = %s" cursor.execute(f2d_query, (doc_id,)) f2d_result = cursor.fetchone() if not f2d_result: raise Exception("无法找到文件到文档的映射关系") file_id = f2d_result['file_id'] file_query = "SELECT parent_id FROM file WHERE id = %s" cursor.execute(file_query, (file_id,)) file_info = cursor.fetchone() if not file_info: raise Exception("无法找到文件记录") cursor.close() conn.close() conn = None # 确保连接已关闭 # 2. 更新文档状态为处理中 (使用 parser 模块的函数) _update_document_progress(doc_id, status='2', run='1', progress=0.0, message='开始解析') # 3. 调用后台解析函数 parse_result = perform_parse(doc_id, doc_info, file_info) # 4. 返回解析结果 return parse_result except Exception as e: print(f"文档解析启动或执行过程中出错 (Doc ID: {doc_id}): {str(e)}") # 确保在异常时更新状态为失败 try: _update_document_progress(doc_id, status='1', run='0', message=f"解析失败: {str(e)}") except Exception as update_err: print(f"更新文档失败状态时出错 (Doc ID: {doc_id}): {str(update_err)}") # raise Exception(f"文档解析失败: {str(e)}") return {"success": False, "error": f"文档解析失败: {str(e)}"} finally: if cursor: cursor.close() if conn: conn.close() @classmethod def async_parse_document(cls, doc_id): """异步解析文档""" try: # 启动后台线程执行同步的 parse_document 方法 thread = threading.Thread(target=cls.parse_document, args=(doc_id,)) thread.daemon = True # 设置为守护线程，主程序退出时线程也退出 thread.start() # 立即返回，表示任务已提交 return { "task_id": doc_id, # 使用 doc_id 作为任务标识符 "status": "processing", "message": "文档解析任务已提交到后台处理" } except Exception as e: print(f"启动异步解析任务失败 (Doc ID: {doc_id}): {str(e)}") # 可以在这里尝试更新文档状态为失败 try: _update_document_progress(doc_id, status='1', run='0', message=f"启动解析失败: {str(e)}") except Exception as update_err: print(f"更新文档启动失败状态时出错 (Doc ID: {doc_id}): {str(update_err)}") raise Exception(f"启动异步解析任务失败: {str(e)}") @classmethod def get_document_parse_progress(cls, doc_id): """获取文档解析进度""" conn = None cursor = None try: conn = cls._get_db_connection() cursor = conn.cursor(dictionary=True) query = """ SELECT progress, progress_msg, status, run FROM document WHERE id = %s """ cursor.execute(query, (doc_id,)) result = cursor.fetchone() if not result: return {"error": "文档不存在"} # 确保 progress 是浮点数 progress_value = 0.0 if result.get("progress") is not None: try: progress_value = float(result["progress"]) except (ValueError, TypeError): progress_value = 0.0 # 或记录错误 return { "progress": progress_value, "message": result.get("progress_msg", ""), "status": result.get("status", "0"), "running": result.get("run", "0"), } except Exception as e: print(f"获取文档进度失败 (Doc ID: {doc_id}): {str(e)}") return {"error": f"获取进度失败: {str(e)}"} finally: if cursor: cursor.close() if conn: conn.close()