mirror of
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
22 lines
646 B
Python
22 lines
646 B
Python
"""Shared utility functions for the Postgres checkpoint & storage classes."""
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from collections.abc import Iterator
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from contextlib import contextmanager
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from psycopg import Connection
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from psycopg.rows import DictRow
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from psycopg_pool import ConnectionPool
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Conn = Connection[DictRow] | ConnectionPool[Connection[DictRow]]
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@contextmanager
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def get_connection(conn: Conn) -> Iterator[Connection[DictRow]]:
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if isinstance(conn, Connection):
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yield conn
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elif isinstance(conn, ConnectionPool):
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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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