mirror of
https://github.com/DMOJ/online-judge.git
synced 2024-11-25 16:32:37 +08:00
56 lines
1.3 KiB
Python
56 lines
1.3 KiB
Python
import json
|
|
import threading
|
|
from time import time
|
|
|
|
import pika
|
|
from django.conf import settings
|
|
from pika.exceptions import AMQPError
|
|
|
|
__all__ = ['EventPoster', 'post', 'last']
|
|
|
|
|
|
class EventPoster(object):
|
|
def __init__(self):
|
|
self._connect()
|
|
self._exchange = settings.EVENT_DAEMON_AMQP_EXCHANGE
|
|
|
|
def _connect(self):
|
|
self._conn = pika.BlockingConnection(pika.URLParameters(settings.EVENT_DAEMON_AMQP))
|
|
self._chan = self._conn.channel()
|
|
|
|
def post(self, channel, message, tries=0):
|
|
try:
|
|
id = int(time() * 1000000)
|
|
self._chan.basic_publish(self._exchange, '',
|
|
json.dumps({'id': id, 'channel': channel, 'message': message}))
|
|
return id
|
|
except AMQPError:
|
|
if tries > 10:
|
|
raise
|
|
self._connect()
|
|
return self.post(channel, message, tries + 1)
|
|
|
|
|
|
_local = threading.local()
|
|
|
|
|
|
def _get_poster():
|
|
if 'poster' not in _local.__dict__:
|
|
_local.poster = EventPoster()
|
|
return _local.poster
|
|
|
|
|
|
def post(channel, message):
|
|
try:
|
|
return _get_poster().post(channel, message)
|
|
except AMQPError:
|
|
try:
|
|
del _local.poster
|
|
except AttributeError:
|
|
pass
|
|
return 0
|
|
|
|
|
|
def last():
|
|
return int(time() * 1000000)
|