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"""
.. module::PubSubClient
:synopsis: connect to a message bus and act as a message relay
.. moduleauthor::Dave Pedu <dave@davepedu.com>
"""
from pyircbot.modulebase import ModuleBase, hook
from msgbus.client import MsgbusSubClient # see http://gitlab.davepedu.com/dave/pymsgbus
from threading import Thread
from json import dumps, loads
from time import sleep
from zmq.error import Again
class PubSubClient(ModuleBase):
def __init__(self, bot, moduleName):
ModuleBase.__init__(self, bot, moduleName)
self.host, self.port = self.config.get("servers")[0].split(":")
self.bus = None
self.bus_listener_thread = Thread(target=self.bus_listener)
self.bus_listener_thread.daemon = True
self.bus_listener_thread.start()
def bus_listener(self):
sleep(3)
while True:#TODO clean exit onenable/ondisable etc
if not self.bus:
sleep(0.01)
continue
try:
channel, message = self.bus.recv(block=False)
except Again:
sleep(0.01)
continue
print(channel, "--", message)
tag, subcommand, message = message.split(" ", 2)
if tag != "default":
continue
if subcommand == "privmsg":
dest, message = loads(message)
self.bot.act_PRIVMSG(dest, message)
def publish(self, subchannel, message):
self.bus.pub(self.config.get("publish").format(subchannel), "{} {}".format("default", message))
@hook("PRIVMSG")
def bus_privmsg(self, msg):
# msg.command msg.args msg.prefix msg.trailing
self.publish("privmsg", dumps([msg.args, msg.prefix[0], msg.trailing, {"prefix": msg.prefix}]))
@hook("JOIN")
def bus_join(self, msg):
# msg.command msg.args msg.prefix msg.trailing
self.publish("join", dumps([msg.prefix[0], msg.trailing, {"prefix": msg.prefix}]))
@hook("PART")
def bus_part(self, msg):
# msg.command msg.args msg.prefix msg.trailing
self.publish("part", dumps([msg.args, msg.prefix[0], msg.trailing, {"prefix": msg.prefix}]))
def onenable(self):
self.bus = MsgbusSubClient(self.host, int(self.port))
for channel in self.config.get("subscriptions"):
self.bus.sub(channel)
self.publish("sys", "online")
def ondisable(self):
self.log.warning("clean it up")
self.publish("sys", "offline")
self.bus.close()
"""
Bot connects to the bus:
pyircbot_sys default online
Bot disconnects from the bus:
pyircbot_sys default offline
Bot relaying a privmsg:
pyircbot_privmsg default [["#clonebot"], "dave-irccloud", "message text",
{"prefix": ["dave-irccloud", "sid36094", "Clk-247B1F43.irccloud.com"]}]
User parts a channel:
pyircbot_part default [["#clonebot"], "dave-irccloud", "part msg",
{"prefix": ["dave-irccloud", "sid36094", "Clk-247B1F43.irccloud.com"]}]
User joins a channel:
pyircbot_join default ["dave-irccloud", "#clonebot",
{"prefix": ["dave-irccloud", "sid36094", "Clk-247B1F43.irccloud.com"]}]
# Client sending a message that the bot will relay
pyircbot_send default privmsg ["#clonebot", "asdf1234"]
"""