8000 fix: use lazy refresh for Cloud SQL Connector by jackwotherspoon · Pull Request #86 · googleapis/langchain-google-cloud-sql-mysql-python · GitHub
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fix: use lazy refresh for Cloud SQL Connector #86

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Merged
merged 1 commit into from
Jul 2, 2024
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fix: use lazy refresh for Cloud SQL Connector #86

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2 changes: 1 addition & 1 deletion pyproject.toml
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Original file line number Diff line number Diff line change
Expand Up @@ -13,7 +13,7 @@ dependencies = [
"langchain-community>=0.0.18, <1.0.0",
"numpy>=1.24.4, <2.0.0",
"SQLAlchemy>=2.0.7, <3.0.0",
"cloud-sql-python-connector[pymysql]>=1.7.0, <2.0.0"
"cloud-sql-python-connector[pymysql]>=1.10.0, <2.0.0"
]

classifiers = [
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2 changes: 1 addition & 1 deletion requirements.txt
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Expand Up @@ -3,5 +3,5 @@ langchain-community==0.2.0
numpy===1.24.4; python_version <= "3.8"
numpy==1.26.4; python_version > "3.8"
SQLAlchemy==2.0.30
cloud-sql-python-connector[pymysql]==1.9.2
cloud-sql-python-connector[pymysql]==1.10.0

6 changes: 4 additions & 2 deletions src/langchain_google_cloud_sql_mysql/engine.py
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Expand Up @@ -21,7 +21,7 @@
import google.auth.transport.requests
import requests
import sqlalchemy
from google.cloud.sql.connector import Connector
from google.cloud.sql.connector import Connector, RefreshStrategy

from .version import __version__

Expand Down Expand Up @@ -193,7 +193,9 @@ def _create_connector_engine(
enable_iam_auth = True

if cls._connector is None:
cls._connector = Connector(user_agent=USER_AGENT)
cls._connector = Connector(
user_agent=USER_AGENT, refresh_strategy=RefreshStrategy.LAZY
)

# anonymous function to be used for SQLAlchemy 'creator' argument
def getconn() -> pymysql.Connection:
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