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https://github.com/langchain-ai/langgraph.git
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Sydney RunkleandGitHub
2d3121a17c
* `strict=False` is the default, pyupgrade to min version 3.10 adds this to be explicit w/ behavior
24 lines
731 B
Python
24 lines
731 B
Python
"""Shared async utility functions for the Postgres checkpoint & storage classes."""
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from collections.abc import AsyncIterator
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from contextlib import asynccontextmanager
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from psycopg import AsyncConnection
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from psycopg.rows import DictRow
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from psycopg_pool import AsyncConnectionPool
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Conn = AsyncConnection[DictRow] | AsyncConnectionPool[AsyncConnection[DictRow]]
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@asynccontextmanager
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async def get_connection(
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conn: Conn,
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) -> AsyncIterator[AsyncConnection[DictRow]]:
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if isinstance(conn, AsyncConnection):
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yield conn
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elif isinstance(conn, AsyncConnectionPool):
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async with conn.connection() as conn:
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yield conn
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else:
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raise TypeError(f"Invalid connection type: {type(conn)}")
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