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Enable TCP keepalive settings on the database connection #1

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Merged
houzefa-abba merged 1 commit into from
Mar 11, 2020
Merged

Enable TCP keepalive settings on the database connection #1

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17 changes: 16 additions & 1 deletion queue_job/jobrunner/runner.py
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Original file line number Diff line number Diff line change
Expand Up @@ -138,6 +138,7 @@
import logging
import os
import select
import socket
import threading
import time

Expand Down Expand Up @@ -256,12 +257,26 @@ def urlopen():
thread.start()


class Database(object):
def enable_keepalive(connection):
s = socket.fromfd(connection.fileno(), socket.AF_INET, socket.SOCK_STREAM)
# Enable sending of keep-alive messages
s.setsockopt(socket.SOL_SOCKET, socket.SO_KEEPALIVE, 1)
# Time the connection needs to remain idle before start sending
# keepalive probes
s.setsockopt(socket.IPPROTO_TCP, socket.TCP_KEEPIDLE, 60)
# Time between individual keepalive probes
s.setsockopt(socket.IPPROTO_TCP, socket.TCP_KEEPINTVL, 1)
# The maximum number of keepalive probes should send before dropping
# the connection
s.setsockopt(socket.IPPROTO_TCP, socket.TCP_KEEPCNT, 3)


class Database(object):
def __init__(self, db_name):
self.db_name = db_name
connection_info = _connection_info_for(db_name)
self.conn = psycopg2.connect(**connection_info)
enable_keepalive(self.conn)
self.conn.set_isolation_level(ISOLATION_LEVEL_AUTOCOMMIT)
self.has_queue_job = self._has_queue_job()
if self.has_queue_job:
Expand Down