asyncpg.py

"""
Copyright 2022 Google LLC

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

 https://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
"""

importssl
fromtypingimportAny, TYPE_CHECKING

SERVER_PROXY_PORT=3307

ifTYPE_CHECKING:
importasyncpg


asyncdefconnect(
ip_address: str, ctx: ssl.SSLContext, **kwargs: Any
) ->"asyncpg.Connection":
"""Helper function to create an asyncpg DB-API connection object.

 Args:
 ip_address (str): A string containing an IP address for the Cloud SQL
 instance.
 ctx (ssl.SSLContext): An SSLContext object created from the Cloud SQL
 server CA cert and ephemeral cert.
 server CA cert and ephemeral cert.
 kwargs: Keyword arguments for establishing asyncpg connection
 object to Cloud SQL instance.

 Returns:
 asyncpg.Connection: An asyncpg connection to the Cloud SQL
 instance.
 Raises:
 ImportError: The asyncpg module cannot be imported.
 """

try:
importasyncpg
exceptImportError:
raiseImportError(
'Unable to import module "asyncpg." Please install and try again.'
 )
user=kwargs.pop("user")
db=kwargs.pop("db")
passwd=kwargs.pop("password", None)

returnawaitasyncpg.connect(
user=user,
database=db,
password=passwd,
host=ip_address,
port=SERVER_PROXY_PORT,
ssl=ctx,
direct_tls=True,
**kwargs,
 )