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ck 连接池

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This commit is contained in:
wuaho 2021-07-27 16:03:33 +08:00
parent db2262ec0b
commit 773e1fac82
2 changed files with 14 additions and 5 deletions
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13
db/ckdb.py
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@ -5,15 +5,22 @@ import pandas as pd
class CKDrive:
client: Client = None
ClientPool = dict()
@classmethod
async def _execute(cls, *args, **kwargs):
key, client = cls.ClientPool.popitem()
res = await client.execute(*args, **kwargs)
CKDrive.ClientPool[key] = client
return res
async def execute(self, sql) -> dict:
data, columns = await self.client.execute(sql, with_column_types=True, columnar=True)
data, columns = await self._execute(sql, with_column_types=True, columnar=True)
df = pd.DataFrame({col[0]: d for d, col in zip(data, columns)})
return df.T.to_dict()
async def query_dataframe(self, sql):
data, columns = await self.client.execute(sql, with_column_types=True, columnar=True)
data, columns = await self._execute(sql, with_column_types=True, columnar=True)
df = pd.DataFrame({col[0]: d for d, col in zip(data, columns)})
return df

6
db/ckdb_utils.py
View File

@ -4,8 +4,10 @@ from core.config import settings
from .ckdb import CKDrive
async def connect_to_ck():
CKDrive.client = Client(**settings.CK_CONFIG)
async def connect_to_ck(pool_size=100):
for i in range(pool_size):
client = Client(**settings.CK_CONFIG)
CKDrive.ClientPool[i] = client
async def close_ck_connection():