在ZeroMQ中能否实现如下模型？

Question

Where A理论上'acts'像一个服务器，其中D和E 既是订阅者又是发布者，F 是订阅者。

如果确实可行，将不胜感激。

如果不是，请提供替代方案。 Websockets 不是我的目标中的一个选项。

Answer 1

当然可以：

最佳
首先阅读 [] 部分中的主要概念差异。

为简单起见，我们假设只有一个 tcp:// 传输-class 和具有独立 IP 地址的节点（很容易转换为任何共同定位案例 and/or 不同的传输方式-class 混合）。

对于任何更大的卷 and/or 严格的延迟管理案例，性能调整都是必须的。

节点-A：

import time, zmq; aCTX = zmq.Context(); aPUB = aCTX.socket( zmq.PUB )
pass;                                   aPUB.bind( "tcp:10.0.0.1:12345" )
pass;                                   aPUB.setsockopt( zmq.CONFLATE, 1 )
pass;                                   print( "A: Started. Can Ctrl+C." )
while True:
      try:
           aPUB.send( "A: sending ...[{0:}]".format( time.ctime() ); time.sleep( 1 )
      except KeyboardInterrupt:
           pass;                        print( "A: Ctrl+C'd. Will terminate" ); break
pass;
aPUB.close()
aCTX.term()

节点-B(,C):

import time, zmq; aCTX = zmq.Context(); aPUB = aCTX.socket( zmq.PUB )
pass;                                   aPUB.bind( "tcp:10.0.0.10:23456" )
pass;                                   aPUB.setsockopt( zmq.CONFLATE, 1 )
pass;                                   aSUB = aCTX.socket( zmq.SUB )
pass;                                   aSUB.connect( "tcp://10.0.0.1:12345" )
pass;                                   aSUB.setsockopt( zmq.LINGER, 0 )
pass;                                   aSUB.setsockopt( zmq.SUBSCRIBE, "A:" )
pass;                                   print( "B: Started. Can Ctrl+C." )
while True:
      try:
           aPUB.send( "B: sending ...[{0:}]".format( time.ctime() );
           if ( 0 != aSUB.poll(  500, zmq.POLLIN ) ):
               print( "B:recv()'d: {0:} at {1:}".format( aSUB.recv( zmq.NOBLOCK ), time.ctime() )

      except KeyboardInterrupt:
           pass;                        print( "B: Ctrl+C'd. Will terminate" ); break
pass;
aPUB.close()
aSUB.close()
aCTX.term()

节点-D(,E):

import time, zmq; aCTX = zmq.Context(); aPUB = aCTX.socket( zmq.PUB )
pass;                                   aPUB.bind( "tcp:10.0.0.100:34567" )
pass;                                   aPUB.setsockopt( zmq.CONFLATE, 1 )
pass;                                   aSUB = aCTX.socket( zmq.SUB )
pass;                                   aSUB.connect( "tcp://10.0.0.10:23456" )
pass;                                   aSUB.connect( "tcp://10.0.0.20:23456" )
pass;                                   aSUB.setsockopt( zmq.LINGER, 0 )
pass;                                   aSUB.setsockopt( zmq.SUBSCRIBE, "B:" )
pass;                                   aSUB.setsockopt( zmq.SUBSCRIBE, "C:" )
pass;                                   print( "D: Started. Can Ctrl+C." )
while True:
      try:
           aPUB.send( "D: sending ...[{0:}]".format( time.ctime() )
           if ( 0 != aSUB.poll(  250, zmq.POLLIN ) ):
               print( "D:recv()'d: {0:} at {1:}".format( aSUB.recv( zmq.NOBLOCK ), time.ctime() )
      except KeyboardInterrupt:
           pass;                        print( "D: Ctrl+C'd. Will terminate" ); break
pass;
aPUB.close()
aSUB.close()
aCTX.term()

节点-F：

import time, zmq; aCTX = zmq.Context(); aSUB = aCTX.socket( zmq.SUB )
pass;                                   aSUB.connect( "tcp://10.0.0.100:34567" )
pass;                                   aSUB.connect( "tcp://10.0.0.200:34567" )
pass;                                   aSUB.setsockopt( zmq.LINGER, 0 )
pass;                                   aSUB.setsockopt( zmq.SUBSCRIBE, "D:" )
pass;                                   aSUB.setsockopt( zmq.SUBSCRIBE, "E:" )
pass;                                   print( "F: Started. Can Ctrl+C." )
while True:
      try:
           print( "F:recv()'d: {0:} at {1:}".format( aSUB.recv(), time.ctime() )
      except KeyboardInterrupt:
           pass;                        print( "F: Ctrl+C'd. Will terminate" ); break
pass;
aSUB.close()
aCTX.term()

在ZeroMQ中能否实现如下模型？

Can the following model be achieved in ZeroMQ?

python

sockets

distributed-system

zeromq

pyzmq

当然可以：