client.py :  » Development » Pyro » Pyro-3.10 » examples » chatbox-ES » Python Open Source

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Python Open Source » Development » Pyro 
Pyro » Pyro 3.10 » examples » chatbox ES » client.py
#!/usr/bin/env python

from Pyro.EventService.Clients import Publisher,Subscriber
from server import CHAT_SERVER_NAME
from threading import Thread
import Pyro.core
from Pyro.errors import NamingError,ConnectionClosedError

# Chat client.
# Uses main thread for printing incoming event server messages
# (the chat messages!)
# and another to read user input and publish this on the chat channel.
# Logon/logoff is performed using the Chat server, which gives us a chat channel
# event server topic. The actual chatting is done fully trough
# this channel (the ES), the chat server is not needed for this!
class Chatter(Publisher, Subscriber):
  def __init__(self):
    Publisher.__init__(self)
    Subscriber.__init__(self)
    self.chatbox = Pyro.core.getProxyForURI('PYRONAME://'+CHAT_SERVER_NAME)
  def event(self, event):
    (nick,line)=event.msg
    if nick!=self.nick:
      print '['+nick+'] '+line
  def chooseChannel(self):
    nicks=self.chatbox.getNicks()
    if nicks:
      print 'The following people are on the server: ',', '.join(nicks)
    channels=self.chatbox.getChannels()
    channels.sort()
    if channels:
      print 'The following channels already exist: ',', '.join(channels)
      print
      self.channel=raw_input('Choose a channel or create a new one: ')
    else:
      print 'The server has no active channels.'
      self.channel=raw_input('Name for new channel: ')
    self.nick=raw_input('Choose a nickname: ')
    (self.eventTopic, people)=self.chatbox.join(self.channel,self.nick)
    self.subscribe(self.eventTopic)
    print 'Joined channel',self.channel,'as',self.nick
    print 'People on this channel:',', '.join(people)
    self.inputThread=Thread(target=self.handleInput)
    self.inputThread.start()
    try:
      self.listen()
    except KeyboardInterrupt:
      print 'Shutting down... (press enter)'
      self.abort()
      self.inputThread.join()
  def handleInput(self):
    print 'Ready for input! Type /quit to quit'
    try:
      try:
        while not self.abortListen:
          line=raw_input('> ')
          if line=='/quit':
            break
          if line:
            self.publish(self.eventTopic,(self.nick,line))
      except EOFError:
        pass
    finally:
      # need to get new chatbox proxy because we're in a different thread
      chatbox = Pyro.core.getProxyForURI('PYRONAME://'+CHAT_SERVER_NAME)
      chatbox.leave(self.channel, self.nick)
      self.abort()
      print 'Bye!'


def main():
  chatter=Chatter()
  chatter.chooseChannel()

  
if __name__=="__main__":
  main()
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