mirror of
https://github.com/nexus-stc/hyperboria
synced 2024-11-27 21:46:50 +01:00
43 lines
1.2 KiB
Python
43 lines
1.2 KiB
Python
import aiopg
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import psycopg2.extras
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from aiokit import AioThing
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from psycopg2 import OperationalError
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from tenacity import (
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retry,
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retry_if_exception_type,
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stop_after_attempt,
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wait_fixed,
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)
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class AioPostgresPoolHolder(AioThing):
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def __init__(self, fn=aiopg.create_pool, *args, **kwargs):
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super().__init__()
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self.fn = fn
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self.args = args
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self.kwargs = kwargs
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self.pool = None
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@retry(
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retry=retry_if_exception_type(OperationalError),
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stop=stop_after_attempt(3),
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wait=wait_fixed(1.0),
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)
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async def start(self):
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if not self.pool:
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self.pool = await self.fn(*self.args, **self.kwargs)
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async def stop(self):
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if self.pool:
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self.pool.close()
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await self.pool.wait_closed()
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self.pool = None
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async def execute(self, stmt, values=None, fetch=False, timeout=None, cursor_factory=psycopg2.extras.DictCursor):
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async with self.pool.acquire() as conn:
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async with conn.cursor(cursor_factory=cursor_factory) as cur:
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await cur.execute(stmt, values, timeout=timeout)
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if fetch:
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return await cur.fetchall()
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return cur.rowcount
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