665 lines
23 KiB
Python
665 lines
23 KiB
Python
import os
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import mysql.connector
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import re
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from io import BytesIO
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from minio import Minio
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from dotenv import load_dotenv
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from werkzeug.utils import secure_filename
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from datetime import datetime
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from .utils import FileType, FileSource, StatusEnum, get_uuid
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from .document_service import DocumentService
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from .file_service import FileService
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from .file2document_service import File2DocumentService
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from database import DB_CONFIG, MINIO_CONFIG
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# 加载环境变量
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load_dotenv("../../docker/.env")
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UPLOAD_FOLDER = '/data/uploads'
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ALLOWED_EXTENSIONS = {'pdf', 'doc', 'docx', 'ppt', 'pptx', 'xls', 'xlsx', 'jpg', 'jpeg', 'png', 'txt', 'md'}
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def allowed_file(filename):
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"""Check if the file extension is allowed"""
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return '.' in filename and \
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filename.rsplit('.', 1)[1].lower() in ALLOWED_EXTENSIONS
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def filename_type(filename):
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"""根据文件名确定文件类型"""
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ext = os.path.splitext(filename)[1].lower()
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if ext in ['.jpg', '.jpeg', '.png', '.gif', '.bmp']:
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return FileType.VISUAL.value
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elif ext in ['.pdf']:
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return FileType.PDF.value
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elif ext in ['.doc', '.docx']:
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return FileType.WORD.value
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elif ext in ['.xls', '.xlsx']:
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return FileType.EXCEL.value
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elif ext in ['.ppt', '.pptx']:
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return FileType.PPT.value
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elif ext in ['.txt', '.md']: # 添加对 txt 和 md 文件的支持
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return FileType.TEXT.value
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return FileType.OTHER.value
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def get_minio_client():
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"""创建MinIO客户端"""
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return Minio(
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endpoint=MINIO_CONFIG["endpoint"],
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access_key=MINIO_CONFIG["access_key"],
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secret_key=MINIO_CONFIG["secret_key"],
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secure=MINIO_CONFIG["secure"]
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)
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def get_db_connection():
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"""创建数据库连接"""
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return mysql.connector.connect(**DB_CONFIG)
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def get_files_list(current_page, page_size, name_filter=""):
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"""
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获取文件列表
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Args:
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current_page: 当前页码
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page_size: 每页大小
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name_filter: 文件名过滤条件
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Returns:
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tuple: (文件列表, 总数)
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"""
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try:
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# 计算偏移量
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offset = (current_page - 1) * page_size
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# 连接数据库
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conn = get_db_connection()
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cursor = conn.cursor(dictionary=True)
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# 构建查询条件
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where_clause = ""
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params = []
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if name_filter:
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where_clause = "WHERE d.name LIKE %s"
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params.append(f"%{name_filter}%")
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# 查询总数
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count_query = f"""
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SELECT COUNT(*) as total
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FROM document d
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{where_clause}
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"""
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cursor.execute(count_query, params)
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total = cursor.fetchone()['total']
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# 查询文件列表
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query = f"""
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SELECT d.id, d.name, d.kb_id, d.location, d.size, d.type, d.create_time
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FROM document d
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{where_clause}
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ORDER BY d.create_time DESC
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LIMIT %s OFFSET %s
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"""
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cursor.execute(query, params + [page_size, offset])
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documents = cursor.fetchall()
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# 获取文档与文件的关联信息
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doc_ids = [doc['id'] for doc in documents]
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file_mappings = {}
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if doc_ids:
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placeholders = ', '.join(['%s'] * len(doc_ids))
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cursor.execute(f"""
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SELECT f2d.document_id, f.id as file_id, f.parent_id, f.source_type
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FROM file2document f2d
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JOIN file f ON f2d.file_id = f.id
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WHERE f2d.document_id IN ({placeholders})
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""", doc_ids)
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for row in cursor.fetchall():
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file_mappings[row['document_id']] = {
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'file_id': row['file_id'],
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'parent_id': row['parent_id'],
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'source_type': row['source_type']
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}
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# 整合信息
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result = []
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for doc in documents:
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doc_id = doc['id']
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kb_id = doc['kb_id']
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location = doc['location']
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# 确定存储位置
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storage_bucket = kb_id
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storage_location = location
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# 如果有文件映射，检查是否需要使用文件的parent_id作为bucket
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if doc_ids and doc_id in file_mappings:
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file_info = file_mappings[doc_id]
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# 模拟File2DocumentService.get_storage_address的逻辑
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if file_info.get('source_type') is None or file_info.get('source_type') == 0: # LOCAL
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storage_bucket = file_info['parent_id']
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# 构建结果字典
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result_item = {
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'id': doc_id,
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'name': doc.get('name', ''),
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'kb_id': kb_id,
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'size': doc.get('size', 0),
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'type': doc.get('type', ''),
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'location': location,
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'create_time': doc.get('create_time', 0)
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}
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result.append(result_item)
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cursor.close()
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conn.close()
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return result, total
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except Exception as e:
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raise e
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def get_file_info(file_id):
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"""
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获取文件信息
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Args:
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file_id: 文件ID
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Returns:
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tuple: (文档信息, 文件映射信息, 存储桶, 存储位置)
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"""
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try:
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# 连接数据库
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conn = get_db_connection()
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cursor = conn.cursor(dictionary=True)
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# 查询文档信息
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cursor.execute("""
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SELECT d.id, d.name, d.kb_id, d.location, d.type
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FROM document d
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WHERE d.id = %s
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""", (file_id,))
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document = cursor.fetchone()
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if not document:
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cursor.close()
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conn.close()
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return None, None, None, None
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# 获取文档与文件的关联信息
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cursor.execute("""
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SELECT f2d.document_id, f.id as file_id, f.parent_id, f.source_type
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FROM file2document f2d
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JOIN file f ON f2d.file_id = f.id
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WHERE f2d.document_id = %s
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""", (file_id,))
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file_mapping = cursor.fetchone()
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# 确定存储位置
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storage_bucket = document['kb_id']
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storage_location = document['location']
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# 如果有文件映射，检查是否需要使用文件的parent_id作为bucket
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if file_mapping:
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# 模拟File2DocumentService.get_storage_address的逻辑
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if file_mapping.get('source_type') is None or file_mapping.get('source_type') == 0: # LOCAL
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storage_bucket = file_mapping['parent_id']
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cursor.close()
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conn.close()
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return document, file_mapping, storage_bucket, storage_location
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except Exception as e:
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raise e
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def download_file_from_minio(storage_bucket, storage_location):
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"""
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从MinIO下载文件
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Args:
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storage_bucket: 存储桶
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storage_location: 存储位置
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Returns:
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bytes: 文件数据
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"""
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try:
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# 从MinIO下载文件
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minio_client = get_minio_client()
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# 检查bucket是否存在
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if not minio_client.bucket_exists(storage_bucket):
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raise Exception(f"存储桶 {storage_bucket} 不存在")
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# 下载文件
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response = minio_client.get_object(storage_bucket, storage_location)
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file_data = response.read()
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return file_data
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except Exception as e:
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raise e
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def delete_file(file_id):
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"""
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删除文件
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Args:
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file_id: 文件ID
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Returns:
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bool: 是否删除成功
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"""
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try:
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# 获取文件信息
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document, file_mapping, storage_bucket, storage_location = get_file_info(file_id)
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if not document:
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return False
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# 连接数据库
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conn = get_db_connection()
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cursor = conn.cursor(dictionary=True)
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# 如果有文件映射，获取文件ID
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file_id_to_delete = None
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if file_mapping:
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file_id_to_delete = file_mapping['file_id']
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# 开始事务
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conn.start_transaction()
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try:
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# 1. 删除document表中的记录
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cursor.execute("DELETE FROM document WHERE id = %s", (file_id,))
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# 2. 如果有关联的file2document记录，删除它
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if file_mapping:
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cursor.execute("DELETE FROM file2document WHERE document_id = %s", (file_id,))
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# 3. 如果有关联的file记录，删除它
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if file_id_to_delete:
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cursor.execute("DELETE FROM file WHERE id = %s", (file_id_to_delete,))
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# 提交事务
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conn.commit()
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# 从MinIO删除文件
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try:
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minio_client = get_minio_client()
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# 检查bucket是否存在
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if minio_client.bucket_exists(storage_bucket):
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# 删除文件
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minio_client.remove_object(storage_bucket, storage_location)
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except Exception as e:
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# 即使MinIO删除失败，也不影响数据库操作的成功
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print(f"从MinIO删除文件失败: {str(e)}")
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return True
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except Exception as e:
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# 回滚事务
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conn.rollback()
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raise e
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finally:
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cursor.close()
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conn.close()
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except Exception as e:
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raise e
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def batch_delete_files(file_ids):
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"""
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批量删除文件
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Args:
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file_ids: 文件ID列表
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Returns:
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int: 成功删除的文件数量
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"""
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if not file_ids:
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return 0
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try:
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# 连接数据库
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conn = get_db_connection()
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cursor = conn.cursor(dictionary=True)
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# 创建MinIO客户端
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minio_client = get_minio_client()
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# 开始事务
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conn.start_transaction()
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try:
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success_count = 0
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for file_id in file_ids:
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# 查询文档信息
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cursor.execute("""
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SELECT d.id, d.kb_id, d.location
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FROM document d
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WHERE d.id = %s
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""", (file_id,))
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document = cursor.fetchone()
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if not document:
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continue
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# 获取文档与文件的关联信息
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cursor.execute("""
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SELECT f2d.id as f2d_id, f2d.document_id, f2d.file_id, f.parent_id, f.source_type
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FROM file2document f2d
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JOIN file f ON f2d.file_id = f.id
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WHERE f2d.document_id = %s
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""", (file_id,))
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file_mapping = cursor.fetchone()
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# 确定存储位置
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storage_bucket = document['kb_id']
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storage_location = document['location']
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# 如果有文件映射，检查是否需要使用文件的parent_id作为bucket
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file_id_to_delete = None
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if file_mapping:
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file_id_to_delete = file_mapping['file_id']
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# 模拟File2DocumentService.get_storage_address的逻辑
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if file_mapping.get('source_type') is None or file_mapping.get('source_type') == 0: # LOCAL
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storage_bucket = file_mapping['parent_id']
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# 1. 删除document表中的记录
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cursor.execute("DELETE FROM document WHERE id = %s", (file_id,))
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# 2. 如果有关联的file2document记录，删除它
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if file_mapping:
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cursor.execute("DELETE FROM file2document WHERE id = %s", (file_mapping['f2d_id'],))
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# 3. 如果有关联的file记录，删除它
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if file_id_to_delete:
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cursor.execute("DELETE FROM file WHERE id = %s", (file_id_to_delete,))
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# 从MinIO删除文件
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try:
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# 检查bucket是否存在
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if minio_client.bucket_exists(storage_bucket):
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# 删除文件
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minio_client.remove_object(storage_bucket, storage_location)
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except Exception as e:
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# 即使MinIO删除失败，也不影响数据库操作的成功
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print(f"从MinIO删除文件失败: {str(e)}")
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success_count += 1
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# 提交事务
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conn.commit()
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return success_count
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except Exception as e:
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# 回滚事务
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conn.rollback()
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raise e
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finally:
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cursor.close()
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conn.close()
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except Exception as e:
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raise e
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def upload_files_to_server(files, kb_id=None, user_id=None, parent_id=None):
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"""处理文件上传到服务器的核心逻辑"""
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if user_id is None:
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try:
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conn = 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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user_id = earliest_user['id']
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print(f"使用创建时间最早的用户ID: {user_id}")
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else:
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user_id = '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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except Exception as e:
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print(f"查询最早用户ID失败: {str(e)}")
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user_id = 'system'
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# 如果没有指定parent_id，则获取用户的根文件夹ID
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if parent_id is None:
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try:
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conn = get_db_connection()
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cursor = conn.cursor(dictionary=True)
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# 查询用户的根文件夹
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query_root_folder = """
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SELECT id FROM file
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WHERE tenant_id = %s AND parent_id = id
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LIMIT 1
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"""
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cursor.execute(query_root_folder, (user_id,))
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root_folder = cursor.fetchone()
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if root_folder:
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parent_id = root_folder['id']
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print(f"使用用户根文件夹ID: {parent_id}")
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else:
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# 如果没有找到根文件夹，创建一个
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root_id = get_uuid()
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# 修改时间格式，包含时分秒
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current_time = int(datetime.now().timestamp())
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current_date = datetime.now().strftime('%Y-%m-%d %H:%M:%S')
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root_folder = {
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"id": root_id,
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"parent_id": root_id, # 根文件夹的parent_id指向自己
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"tenant_id": user_id,
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"created_by": user_id,
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"name": "/",
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"type": FileType.FOLDER.value,
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"size": 0,
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"location": "",
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"source_type": FileSource.LOCAL.value,
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"create_time": current_time,
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"create_date": current_date,
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"update_time": current_time,
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"update_date": current_date
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}
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FileService.insert(root_folder)
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parent_id = root_id
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print(f"创建并使用新的根文件夹ID: {parent_id}")
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cursor.close()
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conn.close()
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except Exception as e:
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print(f"查询根文件夹ID失败: {str(e)}")
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# 如果无法获取根文件夹，使用file_bucket_id作为备选
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parent_id = None
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results = []
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for file in files:
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if file.filename == '':
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continue
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if file and allowed_file(file.filename):
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# 为每个文件生成独立的存储桶名称
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file_bucket_id = FileService.generate_bucket_name()
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original_filename = file.filename
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# 修复文件名处理逻辑，保留中文字符
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name, ext = os.path.splitext(original_filename)
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# 只替换文件系统不安全的字符，保留中文和其他Unicode字符
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safe_name = re.sub(r'[\\/:*?"<>|]', '_', name)
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# 如果处理后文件名为空，则使用随机字符串
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if not safe_name or safe_name.strip() == '':
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safe_name = f"file_{get_uuid()[:8]}"
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filename = safe_name + ext.lower()
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filepath = os.path.join(UPLOAD_FOLDER, filename)
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try:
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# 1. 保存文件到本地临时目录
|
||
os.makedirs(UPLOAD_FOLDER, exist_ok=True)
|
||
file.save(filepath)
|
||
print(f"文件已保存到临时目录: {filepath}")
|
||
print(f"原始文件名: {original_filename}, 处理后文件名: {filename}, 扩展名: {ext[1:]}") # 修改打印信息
|
||
|
||
# 2. 获取文件类型 - 使用修复后的文件名
|
||
filetype = filename_type(filename)
|
||
if filetype == FileType.OTHER.value:
|
||
raise RuntimeError("不支持的文件类型")
|
||
|
||
# 3. 生成唯一存储位置
|
||
minio_client = get_minio_client()
|
||
location = filename
|
||
|
||
# 确保bucket存在（使用文件独立的bucket）
|
||
if not minio_client.bucket_exists(file_bucket_id):
|
||
minio_client.make_bucket(file_bucket_id)
|
||
print(f"创建MinIO存储桶: {file_bucket_id}")
|
||
|
||
# 4. 上传到MinIO（使用文件独立的bucket）
|
||
with open(filepath, 'rb') as file_data:
|
||
minio_client.put_object(
|
||
bucket_name=file_bucket_id,
|
||
object_name=location,
|
||
data=file_data,
|
||
length=os.path.getsize(filepath)
|
||
)
|
||
print(f"文件已上传到MinIO: {file_bucket_id}/{location}")
|
||
|
||
# 5. 创建缩略图(如果是图片/PDF等)
|
||
thumbnail_location = ''
|
||
if filetype in [FileType.VISUAL.value, FileType.PDF.value]:
|
||
try:
|
||
thumbnail_location = f'thumbnail_{get_uuid()}.png'
|
||
except Exception as e:
|
||
print(f"生成缩略图失败: {str(e)}")
|
||
|
||
# 6. 创建数据库记录
|
||
doc_id = get_uuid()
|
||
# 修改时间格式，包含时分秒
|
||
current_time = int(datetime.now().timestamp())
|
||
current_date = datetime.now().strftime('%Y-%m-%d %H:%M:%S')
|
||
|
||
doc = {
|
||
"id": doc_id,
|
||
"kb_id": file_bucket_id, # 使用文件独立的bucket_id
|
||
"parser_id": FileService.get_parser(filetype, filename, ""),
|
||
"parser_config": {"pages": [[1, 1000000]]},
|
||
"source_type": "local",
|
||
"created_by": user_id or 'system',
|
||
"type": filetype,
|
||
"name": filename,
|
||
"location": location,
|
||
"size": os.path.getsize(filepath),
|
||
"thumbnail": thumbnail_location,
|
||
"token_num": 0,
|
||
"chunk_num": 0,
|
||
"progress": 0,
|
||
"progress_msg": "",
|
||
"run": "0",
|
||
"status": StatusEnum.VALID.value,
|
||
"create_time": current_time,
|
||
"create_date": current_date,
|
||
"update_time": current_time,
|
||
"update_date": current_date
|
||
}
|
||
|
||
# 7. 保存文档记录 (添加事务处理)
|
||
conn = get_db_connection()
|
||
try:
|
||
cursor = conn.cursor()
|
||
DocumentService.insert(doc)
|
||
print(f"文档记录已保存到MySQL: {doc_id}")
|
||
|
||
# 8. 创建文件记录和关联
|
||
file_record = {
|
||
"id": get_uuid(),
|
||
"parent_id": parent_id or file_bucket_id, # 优先使用指定的parent_id
|
||
"tenant_id": user_id or 'system',
|
||
"created_by": user_id or 'system',
|
||
"name": filename,
|
||
"type": filetype,
|
||
"size": doc["size"],
|
||
"location": location,
|
||
"source_type": FileSource.KNOWLEDGEBASE.value,
|
||
"create_time": current_time,
|
||
"create_date": current_date,
|
||
"update_time": current_time,
|
||
"update_date": current_date
|
||
}
|
||
FileService.insert(file_record)
|
||
print(f"文件记录已保存到MySQL: {file_record['id']}")
|
||
|
||
# 9. 创建文件-文档关联
|
||
File2DocumentService.insert({
|
||
"id": get_uuid(),
|
||
"file_id": file_record["id"],
|
||
"document_id": doc_id,
|
||
"create_time": current_time,
|
||
"create_date": current_date,
|
||
"update_time": current_time,
|
||
"update_date": current_date
|
||
})
|
||
print(f"关联记录已保存到MySQL: {file_record['id']} -> {doc_id}")
|
||
|
||
conn.commit()
|
||
|
||
results.append({
|
||
'id': doc_id,
|
||
'name': filename,
|
||
'size': doc["size"],
|
||
'type': filetype,
|
||
'status': 'success'
|
||
})
|
||
|
||
except Exception as e:
|
||
conn.rollback()
|
||
print(f"数据库操作失败: {str(e)}")
|
||
raise
|
||
finally:
|
||
cursor.close()
|
||
conn.close()
|
||
|
||
except Exception as e:
|
||
results.append({
|
||
'name': filename,
|
||
'error': str(e),
|
||
'status': 'failed'
|
||
})
|
||
print(f"文件上传过程中出错: {filename}, 错误: {str(e)}")
|
||
finally:
|
||
# 删除临时文件
|
||
if os.path.exists(filepath):
|
||
os.remove(filepath)
|
||
|
||
return {
|
||
'code': 0,
|
||
'data': results,
|
||
'message': f'成功上传 {len([r for r in results if r["status"] == "success"])}/{len(files)} 个文件'
|
||
} |