こんにちは私はPythonクラスでいくつかのZMQプルクライアントをラップする際にいくつかの問題を抱えています。これらのクラスは、マルチプロセッシングモジュールを介してサブプロセスでインスタンス化および呼び出されます。クライアントが関数の場合はすべて機能しますが、クラスの場合はpoller.poll（）がハングします。
以下のコードには両方のバージョンがあります。1つは機能し、もう1つは機能しません。なんで？
import zmq
import time
import sys
import random
from multiprocessing import Process
def server_push(port="5556"):
context = zmq.Context()
socket = context.socket(zmq.PUSH)
socket.bind("tcp://*:%s" % port)
print "Running server on port: ", port
# serves only 5 request and dies
for reqnum in range(10):
if reqnum < 6:
socket.send("Continue")
else:
socket.send("Exit")
break
time.sleep (1)
def server_pub(port="5558"):
context = zmq.Context()
socket = context.socket(zmq.PUB)
socket.bind("tcp://*:%s" % port)
publisher_id = random.randrange(0,9999)
print "Running server on port: ", port
# serves only 5 request and dies
for reqnum in range(10):
# Wait for next request from client
topic = random.randrange(8,10)
messagedata = "server#%s" % publisher_id
print "%s %s" % (topic, messagedata)
socket.send("%d %s" % (topic, messagedata))
time.sleep(1)
class Client:
def __init__(self,port_push, port_sub):
context = zmq.Context()
self.socket_pull = context.socket(zmq.PULL)
self.socket_pull.connect ("tcp://localhost:%s" % port_push)
print "Connected to server with port %s" % port_push
self.socket_sub = context.socket(zmq.SUB)
self.socket_sub.connect ("tcp://localhost:%s" % port_sub)
self.socket_sub.setsockopt(zmq.SUBSCRIBE, "9")
print "Connected to publisher with port %s" % port_sub
# Initialize poll set
def __call__(self):
poller = zmq.Poller()
poller.register(self.socket_pull, zmq.POLLIN)
poller.register(self.socket_sub, zmq.POLLIN)
# Work on requests from both server and publisher
should_continue = True
print "listening"
while should_continue:
print "hello"
socks = dict(poller.poll())
print poller
if self.socket_pull in socks and socks[self.socket_pull] == zmq.POLLIN:
message = self.socket_pull.recv()
print "Recieved control command: %s" % message
if message == "Exit":
print "Recieved exit command, client will stop recieving messages"
should_continue = False
if self.socket_sub in socks and socks[self.socket_sub] == zmq.POLLIN:
string = self.socket_sub.recv()
topic, messagedata = string.split()
print "Processing ... ", topic, messagedata
def client(port_push, port_sub):
context = zmq.Context()
socket_pull = context.socket(zmq.PULL)
socket_pull.connect ("tcp://localhost:%s" % port_push)
print "Connected to server with port %s" % port_push
socket_sub = context.socket(zmq.SUB)
socket_sub.connect ("tcp://localhost:%s" % port_sub)
socket_sub.setsockopt(zmq.SUBSCRIBE, "9")
print "Connected to publisher with port %s" % port_sub
# Initialize poll set
poller = zmq.Poller()
poller.register(socket_pull, zmq.POLLIN)
poller.register(socket_sub, zmq.POLLIN)
# Work on requests from both server and publisher
should_continue = True
while should_continue:
socks = dict(poller.poll())
if socket_pull in socks and socks[socket_pull] == zmq.POLLIN:
message = socket_pull.recv()
print "Recieved control command: %s" % message
if message == "Exit":
print "Recieved exit command, client will stop recieving messages"
should_continue = False
if socket_sub in socks and socks[socket_sub] == zmq.POLLIN:
string = socket_sub.recv()
topic, messagedata = string.split()
print "Processing ... ", topic, messagedata
if __name__ == "__main__":
# Now we can run a few servers
server_push_port = "5556"
server_pub_port = "5558"
Process(target=server_push, args=(server_push_port,)).start()
Process(target=server_pub, args=(server_pub_port,)).start()
#~ Process(target=client,args=(server_push_port,server_pub_port)).start()
Process(target=Client(server_push_port,server_pub_port)).start()