本文整理汇总了Python中channel.Channel.read方法的典型用法代码示例。如果您正苦于以下问题：Python Channel.read方法的具体用法？Python Channel.read怎么用？Python Channel.read使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类channel.Channel的用法示例。
在下文中一共展示了Channel.read方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: MQStar
# 需要导入模块: from channel import Channel [as 别名]
# 或者: from channel.Channel import read [as 别名]
class MQStar():
""" MQStar is a Message Queue with a star topology. There's a server and multiple clients.
Each mqstar is identified by a session, which is the name of the underlining redis channels.
A server can send messages to clients on different channels, but receives answers on one channel: channel_to_server
"""
session = ""
channels = {}
"""MQStar is a MessageQueue with a star topology based on Redis"""
def __init__(self, host, session=None):
self.host = host
if not session:
self.session = id_generator()
else:
self.session = session
self.set_session(session)
def set_session(self, session):
channel_server = "MQ_%s_to_server" % self.session
self.channel_to_server = Channel(self.host, channel_server)
def _make_channel(self, frm="server", to="server"):
name = "MQ_%s_%s_%s" % (self.session, frm, to)
channel = Channel(self.host, name)
return channel
def notify_connection(self, av):
logging.debug("notify_connection %s" % av)
redis = self.channel_to_server.redis
name = "MQ_%s_connection" % (self.session)
redis.sadd(name,av)
def reset_connection(self, av):
logging.debug("reset_connection %s" % av)
redis = self.channel_to_server.redis
name = "MQ_%s_connection" % (self.session)
redis.srem(name,av)
def check_connection(self, av):
logging.debug("check_connection %s" % av)
redis = self.channel_to_server.redis
name = "MQ_%s_connection" % (self.session)
return redis.sismember(name,av)
def clean(self, av=None):
""" Cleans all the redis keys related to the used channels
"""
if av:
key = "MQ_*_server_%s" % av
else:
key = "MQ_*"
for k in self.channel_to_server.redis.keys(key):
logging.debug(" MQ clean %s" % k)
self.channel_to_server.redis.delete(k)
#assert not self.channel_to_server.redis.keys("MQ_*")
def add_client(self, client):
if client not in self.channels.keys():
ch = self._make_channel(to=client)
#chRight = self.channelToServer
self.channels[client] = ch
def add_clients(self, clients):
for c in clients:
self.add_client(c)
def send_server(self, client, message):
if client not in self.channels.keys():
logging.debug(" MQ error, client not found")
ch = self.channel_to_server
payload = (client, message)
ch.write(payload)
def receive_server(self, blocking=False, timeout=10):
#logging.debug(" MQ receive_server")
payload = self.channel_to_server.read(blocking, timeout)
if not payload:
logging.error("TIMEOUT")
return None
p = re.compile("\('(\w+)', (.+)\)")
m = p.match(payload)
assert m, "wrong format: %s" % m
cmd, args = m.group(1), m.group(2)
#logging.debug(" MQ read: %s args: %s" % (str(cmd), str(args)))
#client, message = payload
return cmd, args
def send_client(self, client, message):
if client not in self.channels.keys():
logging.debug(" MQ error, sendClient, client not found: %s" %
self.channels)
ch = self.channels[client]
ch.write(message)
#.........这里部分代码省略.........