56 lines
1.9 KiB
Python
56 lines
1.9 KiB
Python
from clickhouse_connect import get_async_client
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from clickhouse_connect.driver import AsyncClient as AsyncClickHouseClient
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from app.settings.config import settings
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import urllib3
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from typing import Any, Dict
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async def get_clickhouse_client() -> AsyncClickHouseClient:
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"""获取ClickHouse异步客户端"""
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# 创建自定义连接池管理器，适配多worker模式
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# 考虑到多worker环境，每个worker的连接池应该适中
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# maxsize参数控制每个主机的连接池大小，block=True防止连接池溢出
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pool_mgr = urllib3.PoolManager(
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num_pools=2, # 连接池数量，减少以适配多worker
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maxsize=5, # 每个连接池的最大连接数，每个worker最多10个连接
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block=True # 当连接池满时阻塞而不是创建新连接
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)
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return await get_async_client(
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host=settings.CLICKHOUSE_HOST,
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username=settings.CLICKHOUSE_USER,
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password=settings.CLICKHOUSE_PASS,
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database=settings.CLICKHOUSE_DB,
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port=settings.CLICKHOUSE_PORT,
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pool_mgr=pool_mgr,
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connect_timeout=30,
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send_receive_timeout=120
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)
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class ClickHouseManager:
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"""ClickHouse连接管理器"""
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def __init__(self):
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self._client: AsyncClickHouseClient = None
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async def get_client(self) -> AsyncClickHouseClient:
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"""获取或创建ClickHouse客户端"""
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if self._client is None:
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self._client = await get_clickhouse_client()
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return self._client
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async def execute(self, query: str, parameters: Dict[str, Any] = None):
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"""执行SQL查询"""
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client = await self.get_client()
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return await client.query(query, parameters=parameters)
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async def close(self):
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"""关闭ClickHouse连接"""
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if self._client:
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await self._client.close()
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self._client = None
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# 全局ClickHouse管理器实例
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clickhouse_manager = ClickHouseManager() |