chore(database): 移除未使用的数据库连接代码

- 删除了 MySQL、Elasticsearch 和 Redis 的连接代码
- 保留了 MinIO 的连接代码
- 移除了未使用的导入语句

api/db/services/database.py

@@ -1,9 +1,6 @@
-import mysql.connector
 import os
-import redis
 from minio import Minio
 from dotenv import load_dotenv
-from elasticsearch import Elasticsearch
 from pathlib import Path
 
 # 加载环境变量
@@ -25,36 +22,15 @@ def is_running_in_docker():
 
 # 根据运行环境选择合适的主机地址和端口
 if is_running_in_docker():
-    MYSQL_HOST = "mysql"
-    MYSQL_PORT = 3306
     MINIO_HOST = "minio"
     MINIO_VISIT_HOST = os.getenv("MINIO_VISIT_HOST", "localhost")
     MINIO_PORT = 9000
-    ES_HOST = "es01"
-    ES_PORT = 9200
-    REDIS_HOST = "redis"
-    REDIS_PORT = 6379
 else:
-    MYSQL_HOST = "localhost"
-    MYSQL_PORT = int(os.getenv("MYSQL_PORT", "5455"))
     MINIO_HOST = "localhost"
     MINIO_VISIT_HOST = "localhost"
     MINIO_PORT = int(os.getenv("MINIO_PORT", "9000"))
-    ES_HOST = "localhost"
-    ES_PORT = int(os.getenv("ES_PORT", "9200"))
-    REDIS_HOST = "localhost"
-    REDIS_PORT = int(os.getenv("REDIS_PORT", "6379"))
 
 
-# 数据库连接配置
-DB_CONFIG = {
-    "host": MYSQL_HOST,
-    "port": MYSQL_PORT,
-    "user": "root",
-    "password": os.getenv("MYSQL_PASSWORD", "infini_rag_flow"),
-    "database": "rag_flow",
-}
-
 # MinIO连接配置
 MINIO_CONFIG = {
     "endpoint": f"{MINIO_HOST}:{MINIO_PORT}",
@@ -64,32 +40,6 @@ MINIO_CONFIG = {
     "visit_point": f"{MINIO_VISIT_HOST}:{MINIO_PORT}",
 }
 
-# Elasticsearch连接配置
-ES_CONFIG = {
-    "host": f"http://{ES_HOST}:{ES_PORT}",
-    "user": os.getenv("ELASTIC_USER", "elastic"),
-    "password": os.getenv("ELASTIC_PASSWORD", "infini_rag_flow"),
-    "use_ssl": os.getenv("ES_USE_SSL", "false").lower() == "true",
-}
-
-# Redis连接配置
-REDIS_CONFIG = {
-    "host": REDIS_HOST,
-    "port": REDIS_PORT,
-    "password": os.getenv("REDIS_PASSWORD", "infini_rag_flow"),
-    "decode_responses": False,
-}
-
-
-def get_db_connection():
-    """创建MySQL数据库连接"""
-    try:
-        conn = mysql.connector.connect(**DB_CONFIG)
-        return conn
-    except Exception as e:
-        print(f"MySQL连接失败: {str(e)}")
-        raise e
-
 
 def get_minio_client():
     """创建MinIO客户端连接"""
@@ -99,38 +49,3 @@ def get_minio_client():
     except Exception as e:
         print(f"MinIO连接失败: {str(e)}")
         raise e
-
-
-def get_es_client():
-    """创建Elasticsearch客户端连接"""
-    try:
-        # 构建连接参数
-        es_params = {"hosts": [ES_CONFIG["host"]]}
-
-        # 添加认证信息
-        if ES_CONFIG["user"] and ES_CONFIG["password"]:
-            es_params["basic_auth"] = (ES_CONFIG["user"], ES_CONFIG["password"])
-
-        # 添加SSL配置
-        if ES_CONFIG["use_ssl"]:
-            es_params["use_ssl"] = True
-            es_params["verify_certs"] = False  # 在开发环境中可以设置为False，生产环境应该设置为True
-
-        es_client = Elasticsearch(**es_params)
-        return es_client
-    except Exception as e:
-        print(f"Elasticsearch连接失败: {str(e)}")
-        raise e
-
-
-def get_redis_connection():
-    """创建Redis连接"""
-    try:
-        # 使用配置创建Redis连接
-        r = redis.Redis(**REDIS_CONFIG)
-        # 测试连接
-        r.ping()
-        return r
-    except Exception as e:
-        print(f"Redis连接失败: {str(e)}")
-        raise e