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zephyr_mirror: Use select to determine whether new messages are available.

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(imported from commit a91f45aa9f3913f38285c050e574bf562b2af2df)
This commit is contained in:
Tim Abbott 2013-05-07 11:08:01 -04:00
parent 5a0e86c6d4
commit fcb6336642
1 changed files with 14 additions and 16 deletions
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30
bots/zephyr_mirror_backend.py
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@ -38,6 +38,7 @@ import logging
import hashlib
import tempfile
import random
import select
class CountingBackoff(object):
def __init__(self, maximum_retries=10):
@ -262,9 +263,9 @@ def maybe_restart_mirroring_script():
def process_loop(log):
restart_check_count = 0
sleep_count = 0
sleep_time = 0.1
last_check_time = time.time()
while True:
select.select([zephyr._z.getFD()], [], [], 15)
try:
notice = zephyr.receive(block=False)
except Exception:
@ -278,22 +279,19 @@ def process_loop(log):
logger.exception("Error relaying zephyr:")
time.sleep(2)
try:
maybe_restart_mirroring_script()
if restart_check_count > 0:
logging.info("Stopped getting errors checking whether restart is required.")
restart_check_count = 0
except Exception:
if restart_check_count < 5:
logger.exception("Error checking whether restart is required:")
restart_check_count += 1
if time.time() - last_check_time > 15:
last_check_time = time.time()
try:
maybe_restart_mirroring_script()
if restart_check_count > 0:
logging.info("Stopped getting errors checking whether restart is required.")
restart_check_count = 0
except Exception:
if restart_check_count < 5:
logger.exception("Error checking whether restart is required:")
restart_check_count += 1
time.sleep(sleep_time)
sleep_count += sleep_time
if sleep_count > 15:
sleep_count = 0
if options.forward_class_messages:
# Ask the Humbug server about any new classes to subscribe to
try:
update_subscriptions()
except Exception: