661 lines
25 KiB
Python
661 lines
25 KiB
Python
import mysql.connector
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import json
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from flask import current_app
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from datetime import datetime
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from utils import generate_uuid
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from database import DB_CONFIG
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class KnowledgebaseService:
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@classmethod
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def _get_db_connection(cls):
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"""Get database connection"""
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return mysql.connector.connect(**DB_CONFIG)
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@classmethod
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def get_knowledgebase_list(cls, page=1, size=10, name=''):
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"""获取知识库列表"""
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conn = cls._get_db_connection()
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cursor = conn.cursor(dictionary=True)
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query = """
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SELECT
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k.id,
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k.name,
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k.description,
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k.create_date,
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k.update_date,
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k.doc_num,
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k.language,
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k.permission
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FROM knowledgebase k
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"""
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params = []
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if name:
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query += " WHERE k.name LIKE %s"
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params.append(f"%{name}%")
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query += " LIMIT %s OFFSET %s"
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params.extend([size, (page-1)*size])
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cursor.execute(query, params)
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results = cursor.fetchall()
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# 处理结果
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for result in results:
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# 处理空描述
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if not result.get('description'):
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result['description'] = "暂无描述"
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# 处理时间格式
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if result.get('create_date'):
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if isinstance(result['create_date'], datetime):
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result['create_date'] = result['create_date'].strftime('%Y-%m-%d %H:%M:%S')
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elif isinstance(result['create_date'], str):
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try:
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# 尝试解析已有字符串格式
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datetime.strptime(result['create_date'], '%Y-%m-%d %H:%M:%S')
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except ValueError:
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result['create_date'] = ""
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# 获取总数
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count_query = "SELECT COUNT(*) as total FROM knowledgebase"
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if name:
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count_query += " WHERE name LIKE %s"
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cursor.execute(count_query, params[:1] if name else [])
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total = cursor.fetchone()['total']
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cursor.close()
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conn.close()
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return {
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'list': results,
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'total': total
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}
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@classmethod
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def get_knowledgebase_detail(cls, kb_id):
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"""获取知识库详情"""
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conn = cls._get_db_connection()
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cursor = conn.cursor(dictionary=True)
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query = """
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SELECT
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k.id,
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k.name,
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k.description,
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k.create_date,
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k.update_date,
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k.doc_num
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FROM knowledgebase k
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WHERE k.id = %s
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"""
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cursor.execute(query, (kb_id,))
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result = cursor.fetchone()
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if result:
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# 处理空描述
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if not result.get('description'):
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result['description'] = "暂无描述"
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# 处理时间格式
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if result.get('create_date'):
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if isinstance(result['create_date'], datetime):
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result['create_date'] = result['create_date'].strftime('%Y-%m-%d %H:%M:%S')
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elif isinstance(result['create_date'], str):
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try:
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datetime.strptime(result['create_date'], '%Y-%m-%d %H:%M:%S')
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except ValueError:
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result['create_date'] = ""
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cursor.close()
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conn.close()
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return result
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@classmethod
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def _check_name_exists(cls, name):
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"""检查知识库名称是否已存在"""
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conn = cls._get_db_connection()
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cursor = conn.cursor()
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query = """
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SELECT COUNT(*) as count
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FROM knowledgebase
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WHERE name = %s
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"""
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cursor.execute(query, (name,))
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result = cursor.fetchone()
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cursor.close()
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conn.close()
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return result[0] > 0
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@classmethod
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def create_knowledgebase(cls, **data):
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"""创建知识库"""
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try:
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# 检查知识库名称是否已存在
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exists = cls._check_name_exists(data['name'])
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if exists:
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raise Exception("知识库名称已存在")
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conn = cls._get_db_connection()
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cursor = conn.cursor(dictionary=True)
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# 获取最早的用户ID作为tenant_id和created_by
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tenant_id = None
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created_by = None
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try:
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query_earliest_user = """
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SELECT id FROM user
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WHERE create_time = (SELECT MIN(create_time) FROM user)
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LIMIT 1
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"""
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cursor.execute(query_earliest_user)
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earliest_user = cursor.fetchone()
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if earliest_user:
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tenant_id = earliest_user['id']
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created_by = earliest_user['id'] # 使用最早用户ID作为created_by
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print(f"使用创建时间最早的用户ID作为tenant_id和created_by: {tenant_id}")
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else:
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# 如果找不到用户，使用默认值
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tenant_id = "system"
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created_by = "system"
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print(f"未找到用户, 使用默认值作为tenant_id和created_by: {tenant_id}")
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except Exception as e:
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print(f"获取用户ID失败: {str(e)}，使用默认值")
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tenant_id = "system"
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created_by = "system"
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current_time = datetime.now()
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create_date = current_time.strftime('%Y-%m-%d %H:%M:%S')
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create_time = int(current_time.timestamp() * 1000) # 毫秒级时间戳
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update_date = create_date
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update_time = create_time
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# 完整的字段列表
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query = """
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INSERT INTO knowledgebase (
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id, create_time, create_date, update_time, update_date,
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avatar, tenant_id, name, language, description,
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embd_id, permission, created_by, doc_num, token_num,
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chunk_num, similarity_threshold, vector_similarity_weight, parser_id, parser_config,
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pagerank, status
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) VALUES (
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%s, %s, %s, %s, %s,
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%s, %s, %s, %s, %s,
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%s, %s, %s, %s, %s,
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%s, %s, %s, %s, %s,
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%s, %s
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)
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"""
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# 设置默认值
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default_parser_config = json.dumps({
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"layout_recognize": "DeepDOC",
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"chunk_token_num": 512,
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"delimiter": "\n!?;。；！？",
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"auto_keywords": 0,
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"auto_questions": 0,
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"html4excel": False,
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"raptor": {"use_raptor": False},
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"graphrag": {"use_graphrag": False}
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})
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kb_id = generate_uuid()
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cursor.execute(query, (
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kb_id, # id
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create_time, # create_time
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create_date, # create_date
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update_time, # update_time
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update_date, # update_date
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None, # avatar
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tenant_id, # tenant_id
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data['name'], # name
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data.get('language', 'Chinese'), # language
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data.get('description', ''), # description
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'bge-m3:latest@Ollama', # embd_id
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data.get('permission', 'me'), # permission
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created_by, # created_by - 使用内部获取的值
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0, # doc_num
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0, # token_num
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0, # chunk_num
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0.7, # similarity_threshold
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0.3, # vector_similarity_weight
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'naive', # parser_id
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default_parser_config, # parser_config
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0, # pagerank
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'1' # status
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))
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conn.commit()
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cursor.close()
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conn.close()
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# 返回创建后的知识库详情
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return cls.get_knowledgebase_detail(kb_id)
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except Exception as e:
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current_app.logger.error(f"创建知识库失败: {str(e)}")
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raise Exception(f"创建知识库失败: {str(e)}")
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@classmethod
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def update_knowledgebase(cls, kb_id, **data):
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"""更新知识库"""
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try:
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# 直接通过ID检查知识库是否存在
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kb = cls.get_knowledgebase_detail(kb_id)
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if not kb:
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return None
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conn = cls._get_db_connection()
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cursor = conn.cursor()
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# 如果要更新名称，先检查名称是否已存在
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if data.get('name') and data['name'] != kb['name']:
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exists = cls._check_name_exists(data['name'])
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if exists:
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raise Exception("知识库名称已存在")
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# 构建更新语句
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update_fields = []
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params = []
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if data.get('name'):
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update_fields.append("name = %s")
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params.append(data['name'])
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if 'description' in data:
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update_fields.append("description = %s")
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params.append(data['description'])
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# 更新时间
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current_time = datetime.now()
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update_date = current_time.strftime('%Y-%m-%d %H:%M:%S')
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update_fields.append("update_date = %s")
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params.append(update_date)
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# 如果没有要更新的字段，直接返回
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if not update_fields:
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return kb_id
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# 构建并执行更新语句
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query = f"""
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UPDATE knowledgebase
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SET {', '.join(update_fields)}
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WHERE id = %s
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"""
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params.append(kb_id)
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cursor.execute(query, params)
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conn.commit()
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cursor.close()
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conn.close()
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# 返回更新后的知识库详情
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return cls.get_knowledgebase_detail(kb_id)
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except Exception as e:
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print(f"更新知识库失败: {str(e)}")
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raise Exception(f"更新知识库失败: {str(e)}")
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@classmethod
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def delete_knowledgebase(cls, kb_id):
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"""删除知识库"""
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try:
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conn = cls._get_db_connection()
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cursor = conn.cursor()
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# 先检查知识库是否存在
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check_query = "SELECT id FROM knowledgebase WHERE id = %s"
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cursor.execute(check_query, (kb_id,))
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if not cursor.fetchone():
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raise Exception("知识库不存在")
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# 执行删除
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delete_query = "DELETE FROM knowledgebase WHERE id = %s"
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cursor.execute(delete_query, (kb_id,))
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conn.commit()
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cursor.close()
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conn.close()
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return True
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except Exception as e:
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current_app.logger.error(f"删除知识库失败: {str(e)}")
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raise Exception(f"删除知识库失败: {str(e)}")
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@classmethod
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def batch_delete_knowledgebase(cls, kb_ids):
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"""批量删除知识库"""
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try:
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conn = cls._get_db_connection()
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cursor = conn.cursor()
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# 检查所有ID是否存在
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check_query = "SELECT id FROM knowledgebase WHERE id IN (%s)" % \
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','.join(['%s'] * len(kb_ids))
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cursor.execute(check_query, kb_ids)
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existing_ids = [row[0] for row in cursor.fetchall()]
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if len(existing_ids) != len(kb_ids):
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missing_ids = set(kb_ids) - set(existing_ids)
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raise Exception(f"以下知识库不存在: {', '.join(missing_ids)}")
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# 执行批量删除
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delete_query = "DELETE FROM knowledgebase WHERE id IN (%s)" % \
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','.join(['%s'] * len(kb_ids))
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cursor.execute(delete_query, kb_ids)
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conn.commit()
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cursor.close()
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conn.close()
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return len(kb_ids)
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except Exception as e:
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current_app.logger.error(f"批量删除知识库失败: {str(e)}")
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raise Exception(f"批量删除知识库失败: {str(e)}")
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@classmethod
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def get_knowledgebase_documents(cls, kb_id, page=1, size=10, name=''):
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"""获取知识库下的文档列表"""
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try:
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conn = cls._get_db_connection()
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cursor = conn.cursor(dictionary=True)
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# 先检查知识库是否存在
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check_query = "SELECT id FROM knowledgebase WHERE id = %s"
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cursor.execute(check_query, (kb_id,))
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if not cursor.fetchone():
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raise Exception("知识库不存在")
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# 查询文档列表
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query = """
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SELECT
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d.id,
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d.name,
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d.chunk_num,
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d.create_date,
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d.status,
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d.run,
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d.progress,
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d.parser_id,
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d.parser_config,
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d.meta_fields
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FROM document d
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WHERE d.kb_id = %s
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"""
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params = [kb_id]
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if name:
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query += " AND d.name LIKE %s"
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params.append(f"%{name}%")
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query += " ORDER BY d.create_date DESC LIMIT %s OFFSET %s"
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params.extend([size, (page-1)*size])
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cursor.execute(query, params)
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results = cursor.fetchall()
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# 处理日期时间格式
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for result in results:
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if result.get('create_date'):
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result['create_date'] = result['create_date'].strftime('%Y-%m-%d %H:%M:%S')
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# 获取总数
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count_query = "SELECT COUNT(*) as total FROM document WHERE kb_id = %s"
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count_params = [kb_id]
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if name:
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count_query += " AND name LIKE %s"
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count_params.append(f"%{name}%")
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cursor.execute(count_query, count_params)
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total = cursor.fetchone()['total']
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cursor.close()
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conn.close()
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print(results)
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return {
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'list': results,
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'total': total
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}
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except Exception as e:
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current_app.logger.error(f"获取知识库文档列表失败: {str(e)}")
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raise Exception(f"获取知识库文档列表失败: {str(e)}")
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@classmethod
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def add_documents_to_knowledgebase(cls, kb_id, file_ids, created_by=None):
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"""添加文档到知识库"""
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try:
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print(f"[DEBUG] 开始添加文档，参数: kb_id={kb_id}, file_ids={file_ids}")
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# 如果没有传入created_by，则获取最早的用户ID
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if created_by is None:
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conn = cls._get_db_connection()
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cursor = conn.cursor(dictionary=True)
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# 查询创建时间最早的用户ID
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query_earliest_user = """
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SELECT id FROM user
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WHERE create_time = (SELECT MIN(create_time) FROM user)
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LIMIT 1
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"""
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cursor.execute(query_earliest_user)
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earliest_user = cursor.fetchone()
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if earliest_user:
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created_by = earliest_user['id']
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print(f"使用创建时间最早的用户ID: {created_by}")
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else:
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created_by = 'system'
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print("未找到用户, 使用默认用户ID: system")
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cursor.close()
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conn.close()
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# 检查知识库是否存在
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kb = cls.get_knowledgebase_detail(kb_id)
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print(f"[DEBUG] 知识库检查结果: {kb}")
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if not kb:
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print(f"[ERROR] 知识库不存在: {kb_id}")
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raise Exception("知识库不存在")
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conn = cls._get_db_connection()
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cursor = conn.cursor()
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# 获取文件信息
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file_query = """
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SELECT id, name, location, size, type
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FROM file
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WHERE id IN (%s)
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""" % ','.join(['%s'] * len(file_ids))
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print(f"[DEBUG] 执行文件查询SQL: {file_query}")
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print(f"[DEBUG] 查询参数: {file_ids}")
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try:
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cursor.execute(file_query, file_ids)
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files = cursor.fetchall()
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print(f"[DEBUG] 查询到的文件数据: {files}")
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except Exception as e:
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print(f"[ERROR] 文件查询失败: {str(e)}")
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raise
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if len(files) != len(file_ids):
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print(f"部分文件不存在: 期望={len(file_ids)}, 实际={len(files)}")
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raise Exception("部分文件不存在")
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# 添加文档记录
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added_count = 0
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for file in files:
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file_id = file[0]
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file_name = file[1]
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print(f"处理文件: id={file_id}, name={file_name}")
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file_location = file[2]
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file_size = file[3]
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file_type = file[4]
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# 检查文档是否已存在于知识库
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check_query = """
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SELECT COUNT(*)
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FROM document d
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JOIN file2document f2d ON d.id = f2d.document_id
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WHERE d.kb_id = %s AND f2d.file_id = %s
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"""
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cursor.execute(check_query, (kb_id, file_id))
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exists = cursor.fetchone()[0] > 0
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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)}")
|
||
# 这里不抛出异常，因为文档已经添加成功
|
||
|
||
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)}") |