539 lines
19 KiB
Python
539 lines
19 KiB
Python
# Nemubot is a smart and modulable IM bot.
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# Copyright (C) 2012-2016 Mercier Pierre-Olivier
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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from datetime import datetime, timezone
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import logging
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from multiprocessing import JoinableQueue
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import threading
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import select
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import sys
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import weakref
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from nemubot import __version__
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from nemubot.consumer import Consumer, EventConsumer, MessageConsumer
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from nemubot import datastore
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import nemubot.hooks
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logger = logging.getLogger("nemubot")
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sync_queue = JoinableQueue()
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def sync_act(*args):
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sync_queue.put(list(args))
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class Bot(threading.Thread):
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"""Class containing the bot context and ensuring key goals"""
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def __init__(self, ip="127.0.0.1", modules_paths=list(),
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data_store=datastore.Abstract(), debug=False):
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"""Initialize the bot context
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Keyword arguments:
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ip -- The external IP of the bot (default: 127.0.0.1)
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modules_paths -- Paths to all directories where looking for modules
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data_store -- An instance of the nemubot datastore for bot's modules
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debug -- enable debug
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"""
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super().__init__(name="Nemubot main")
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logger.info("Initiate nemubot v%s (running on Python %s.%s.%s)",
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__version__,
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sys.version_info.major, sys.version_info.minor, sys.version_info.micro)
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self.debug = debug
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self.stop = True
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# External IP for accessing this bot
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import ipaddress
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self.ip = ipaddress.ip_address(ip)
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# Context paths
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self.modules_paths = modules_paths
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self.datastore = data_store
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self.datastore.open()
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# Keep global context: servers and modules
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self._poll = select.poll()
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self.servers = dict()
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self.modules = dict()
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self.modules_configuration = dict()
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# Events
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self.events = list()
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self.event_timer = None
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# Own hooks
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from nemubot.treatment import MessageTreater
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self.treater = MessageTreater()
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import re
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def in_ping(msg):
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return msg.respond("pong")
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self.treater.hm.add_hook(nemubot.hooks.Message(in_ping,
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match=lambda msg: re.match("^ *(m[' ]?entends?[ -]+tu|h?ear me|do you copy|ping)",
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msg.message, re.I)),
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"in", "DirectAsk")
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def in_echo(msg):
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from nemubot.message import Text
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return Text(msg.frm + ": " + " ".join(msg.args), to=msg.to_response)
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self.treater.hm.add_hook(nemubot.hooks.Command(in_echo, "echo"), "in", "Command")
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def _help_msg(msg):
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"""Parse and response to help messages"""
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from nemubot.module.more import Response
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res = Response(channel=msg.to_response)
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if len(msg.args) >= 1:
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if "nemubot.module." + msg.args[0] in self.modules and self.modules["nemubot.module." + msg.args[0]]() is not None:
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mname = "nemubot.module." + msg.args[0]
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if hasattr(self.modules[mname](), "help_full"):
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hlp = self.modules[mname]().help_full()
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if isinstance(hlp, Response):
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return hlp
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else:
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res.append_message(hlp)
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else:
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res.append_message([str(h) for s,h in self.modules[mname]().__nemubot_context__.hooks], title="Available commands for module " + msg.args[0])
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elif msg.args[0][0] == "!":
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from nemubot.message.command import Command
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for h in self.treater._in_hooks(Command(msg.args[0][1:])):
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if h.help_usage:
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lp = ["\x03\x02%s%s\x03\x02: %s" % (msg.args[0], (" " + k if k is not None else ""), h.help_usage[k]) for k in h.help_usage]
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jp = h.keywords.help()
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return res.append_message(lp + ([". Moreover, you can provides some optional parameters: "] + jp if len(jp) else []), title="Usage for command %s" % msg.args[0])
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elif h.help:
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return res.append_message("Command %s: %s" % (msg.args[0], h.help))
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else:
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return res.append_message("Sorry, there is currently no help for the command %s. Feel free to make a pull request at https://github.com/nemunaire/nemubot/compare" % msg.args[0])
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res.append_message("Sorry, there is no command %s" % msg.args[0])
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else:
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res.append_message("Sorry, there is no module named %s" % msg.args[0])
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else:
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res.append_message("Pour me demander quelque chose, commencez "
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"votre message par mon nom ; je réagis "
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"également à certaine commandes commençant par"
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" !. Pour plus d'informations, envoyez le "
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"message \"!more\".")
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res.append_message("Mon code source est libre, publié sous "
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"licence AGPL (http://www.gnu.org/licenses/). "
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"Vous pouvez le consulter, le dupliquer, "
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"envoyer des rapports de bogues ou bien "
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"contribuer au projet sur GitHub : "
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"https://github.com/nemunaire/nemubot/")
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res.append_message(title="Pour plus de détails sur un module, "
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"envoyez \"!help nomdumodule\". Voici la liste"
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" de tous les modules disponibles localement",
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message=["\x03\x02%s\x03\x02 (%s)" % (im, self.modules[im]().__doc__) for im in self.modules if self.modules[im]() is not None and self.modules[im]().__doc__])
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return res
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self.treater.hm.add_hook(nemubot.hooks.Command(_help_msg, "help"), "in", "Command")
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from queue import Queue
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# Messages to be treated
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self.cnsr_queue = Queue()
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self.cnsr_thrd = list()
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self.cnsr_thrd_size = -1
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def __del__(self):
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self.datastore.close()
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def run(self):
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global sync_queue
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# Rewrite the sync_queue, as the daemonization process tend to disturb it
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old_sync_queue, sync_queue = sync_queue, JoinableQueue()
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while not old_sync_queue.empty():
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sync_queue.put_nowait(old_sync_queue.get())
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self._poll.register(sync_queue._reader, select.POLLIN | select.POLLPRI)
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self.stop = False
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# Relaunch events
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self._update_event_timer()
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logger.info("Starting main loop")
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while not self.stop:
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for fd, flag in self._poll.poll():
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# Handle internal socket passing orders
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if fd != sync_queue._reader.fileno() and fd in self.servers:
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srv = self.servers[fd]
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if flag & (select.POLLERR | select.POLLHUP | select.POLLNVAL):
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try:
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srv.exception(flag)
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except:
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logger.exception("Uncatched exception on server exception")
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if srv.fileno() > 0:
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if flag & (select.POLLOUT):
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try:
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srv.async_write()
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except:
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logger.exception("Uncatched exception on server write")
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if flag & (select.POLLIN | select.POLLPRI):
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try:
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for i in srv.async_read():
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self.receive_message(srv, i)
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except:
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logger.exception("Uncatched exception on server read")
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else:
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del self.servers[fd]
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# Always check the sync queue
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while not sync_queue.empty():
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args = sync_queue.get()
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action = args.pop(0)
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logger.debug("Executing sync_queue action %s%s", action, args)
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if action == "sckt" and len(args) >= 2:
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try:
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if args[0] == "write":
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self._poll.modify(int(args[1]), select.POLLOUT | select.POLLIN | select.POLLPRI)
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elif args[0] == "unwrite":
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self._poll.modify(int(args[1]), select.POLLIN | select.POLLPRI)
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elif args[0] == "register":
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self._poll.register(int(args[1]), select.POLLIN | select.POLLPRI)
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elif args[0] == "unregister":
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self._poll.unregister(int(args[1]))
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except:
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logger.exception("Unhandled excpetion during action:")
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elif action == "exit":
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self.quit()
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elif action == "launch_consumer":
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pass # This is treated after the loop
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sync_queue.task_done()
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# Launch new consumer threads if necessary
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while self.cnsr_queue.qsize() > self.cnsr_thrd_size:
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# Next launch if two more items in queue
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self.cnsr_thrd_size += 2
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c = Consumer(self)
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self.cnsr_thrd.append(c)
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c.start()
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sync_queue = None
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logger.info("Ending main loop")
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# Events methods
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def add_event(self, evt, eid=None, module_src=None):
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"""Register an event and return its identifiant for futur update
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Return:
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None if the event is not in the queue (eg. if it has been executed during the call) or
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returns the event ID.
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Argument:
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evt -- The event object to add
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Keyword arguments:
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eid -- The desired event ID (object or string UUID)
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module_src -- The module to which the event is attached to
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"""
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import uuid
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# Generate the event id if no given
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if eid is None:
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eid = uuid.uuid1()
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# Fill the id field of the event
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if type(eid) is uuid.UUID:
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evt.id = str(eid)
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else:
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# Ok, this is quiet useless...
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try:
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evt.id = str(uuid.UUID(eid))
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except ValueError:
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evt.id = eid
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# TODO: mutex here plz
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# Add the event in its place
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t = evt.current
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i = 0 # sentinel
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for i in range(0, len(self.events)):
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if self.events[i].current > t:
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break
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self.events.insert(i, evt)
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if i == 0 and not self.stop:
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# First event changed, reset timer
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self._update_event_timer()
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if len(self.events) <= 0 or self.events[i] != evt:
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# Our event has been executed and removed from queue
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return None
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# Register the event in the source module
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if module_src is not None:
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module_src.__nemubot_context__.events.append((evt, evt.id))
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evt.module_src = module_src
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logger.info("New event registered in %d position: %s", i, t)
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return evt.id
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def del_event(self, evt, module_src=None):
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"""Find and remove an event from list
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Return:
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True if the event has been found and removed, False else
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Argument:
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evt -- The ModuleEvent object to remove or just the event identifier
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Keyword arguments:
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module_src -- The module to which the event is attached to (ignored if evt is a ModuleEvent)
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"""
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logger.info("Removing event: %s from %s", evt, module_src)
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from nemubot.event import ModuleEvent
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if type(evt) is ModuleEvent:
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id = evt.id
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module_src = evt.module_src
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else:
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id = evt
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if len(self.events) > 0 and id == self.events[0].id:
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if module_src is not None:
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module_src.__nemubot_context__.events.remove((self.events[0], id))
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self.events.remove(self.events[0])
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self._update_event_timer()
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return True
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for evt in self.events:
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if evt.id == id:
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self.events.remove(evt)
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if module_src is not None:
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module_src.__nemubot_context__.events.remove((evt, evt.id))
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return True
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return False
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def _update_event_timer(self):
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"""(Re)launch the timer to end with the closest event"""
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# Reset the timer if this is the first item
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if self.event_timer is not None:
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self.event_timer.cancel()
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if len(self.events):
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try:
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remaining = self.events[0].time_left.total_seconds()
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except:
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logger.exception("An error occurs during event time calculation:")
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self.events.pop(0)
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return self._update_event_timer()
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logger.debug("Update timer: next event in %d seconds", remaining)
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self.event_timer = threading.Timer(remaining if remaining > 0 else 0, self._end_event_timer)
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self.event_timer.start()
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else:
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logger.debug("Update timer: no timer left")
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def _end_event_timer(self):
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"""Function called at the end of the event timer"""
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while len(self.events) > 0 and datetime.now(timezone.utc) >= self.events[0].current:
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evt = self.events.pop(0)
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self.cnsr_queue.put_nowait(EventConsumer(evt))
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sync_act("launch_consumer")
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self._update_event_timer()
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# Consumers methods
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def add_server(self, srv, autoconnect=True):
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"""Add a new server to the context
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Arguments:
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srv -- a concrete AbstractServer instance
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autoconnect -- connect after add?
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"""
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fileno = srv.fileno()
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if fileno not in self.servers:
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self.servers[fileno] = srv
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self.servers[srv.name] = srv
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if autoconnect and not hasattr(self, "noautoconnect"):
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srv.connect()
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return True
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else:
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return False
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# Modules methods
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def import_module(self, name):
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"""Load a module
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Argument:
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name -- name of the module to load
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"""
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if name in self.modules:
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self.unload_module(name)
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__import__(name)
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def add_module(self, module):
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"""Add a module to the context, if already exists, unload the
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old one before"""
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module_name = module.__spec__.name if hasattr(module, "__spec__") else module.__name__
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# Check if the module already exists
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if module_name in self.modules:
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self.unload_module(module_name)
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# Overwrite print built-in
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def prnt(*args):
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if hasattr(module, "logger"):
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module.logger.info(" ".join([str(s) for s in args]))
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else:
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logger.info("[%s] %s", module_name, " ".join([str(s) for s in args]))
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module.print = prnt
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# Create module context
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from nemubot.modulecontext import _ModuleContext, ModuleContext
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module.__nemubot_context__ = ModuleContext(self, module)
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if not hasattr(module, "logger"):
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module.logger = logging.getLogger("nemubot.module." + module_name)
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# Replace imported context by real one
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for attr in module.__dict__:
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if attr != "__nemubot_context__" and type(module.__dict__[attr]) == _ModuleContext:
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module.__dict__[attr] = module.__nemubot_context__
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# Register decorated functions
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import nemubot.hooks
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for s, h in nemubot.hooks.hook.last_registered:
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module.__nemubot_context__.add_hook(h, *s if isinstance(s, list) else s)
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nemubot.hooks.hook.last_registered = []
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# Launch the module
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if hasattr(module, "load"):
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try:
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module.load(module.__nemubot_context__)
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except:
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module.__nemubot_context__.unload()
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raise
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# Save a reference to the module
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self.modules[module_name] = weakref.ref(module)
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logger.info("Module '%s' successfully loaded.", module_name)
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def unload_module(self, name):
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"""Unload a module"""
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if name in self.modules and self.modules[name]() is not None:
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module = self.modules[name]()
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module.print("Unloading module %s" % name)
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# Call the user defined unload method
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if hasattr(module, "unload"):
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module.unload(self)
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module.__nemubot_context__.unload()
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# Remove from the nemubot dict
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del self.modules[name]
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# Remove from the Python dict
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del sys.modules[name]
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for mod in [i for i in sys.modules]:
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if mod[:len(name) + 1] == name + ".":
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logger.debug("Module '%s' also removed from system modules list.", mod)
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del sys.modules[mod]
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logger.info("Module `%s' successfully unloaded.", name)
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return True
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return False
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def receive_message(self, srv, msg):
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"""Queued the message for treatment
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Arguments:
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srv -- The server where the message comes from
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msg -- The message not parsed, as simple as possible
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"""
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self.cnsr_queue.put_nowait(MessageConsumer(srv, msg))
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def quit(self):
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"""Save and unload modules and disconnect servers"""
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if self.event_timer is not None:
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logger.info("Stop the event timer...")
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self.event_timer.cancel()
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logger.info("Save and unload all modules...")
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for mod in [m for m in self.modules.keys()]:
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self.unload_module(mod)
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logger.info("Close all servers connection...")
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for srv in [self.servers[k] for k in self.servers]:
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srv.close()
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logger.info("Stop consumers")
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k = self.cnsr_thrd
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for cnsr in k:
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cnsr.stop = True
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if self.stop is False or sync_queue is not None:
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self.stop = True
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|
sync_act("end")
|
|
sync_queue.join()
|
|
|
|
|
|
# Treatment
|
|
|
|
def check_rest_times(self, store, hook):
|
|
"""Remove from store the hook if it has been executed given time"""
|
|
if hook.times == 0:
|
|
if isinstance(store, dict):
|
|
store[hook.name].remove(hook)
|
|
if len(store) == 0:
|
|
del store[hook.name]
|
|
elif isinstance(store, list):
|
|
store.remove(hook)
|