252 lines
9.3 KiB
Python
252 lines
9.3 KiB
Python
import queue, os, select, socket, threading, time, traceback, typing, uuid
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from src import EventManager, Exports, IRCServer, Logging, ModuleManager
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from src import Socket, utils
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TRIGGER_RETURN = 1
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TRIGGER_EXCEPTION = 2
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class Bot(object):
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def __init__(self, directory, args, cache, config, database, events,
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exports, log, modules, timers):
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self.directory = directory
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self.args = args
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self.cache = cache
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self.config = config
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self.database = database
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self._events = events
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self._exports = exports
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self.log = log
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self.modules = modules
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self._timers = timers
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self.start_time = time.time()
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self.lock = threading.Lock()
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self.running = True
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self.poll = select.epoll()
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self.servers = {}
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self.other_sockets = {}
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self._trigger_server, self._trigger_client = socket.socketpair()
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self.add_socket(Socket.Socket(self._trigger_server, lambda _, s: None))
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self._trigger_functions = []
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self._events.on("timer.reconnect").hook(self._timed_reconnect)
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def trigger(self,
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func: typing.Optional[typing.Callable[[], typing.Any]]=None
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) -> typing.Any:
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func = func or (lambda: None)
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if threading.current_thread() is threading.main_thread():
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returned = func()
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self._trigger_client.send(b"TRIGGER")
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return returned
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self.lock.acquire()
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func_queue = queue.Queue(1) # type: queue.Queue[str]
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self._trigger_functions.append([func, func_queue])
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self.lock.release()
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self._trigger_client.send(b"TRIGGER")
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type, returned = func_queue.get(block=True)
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if type == TRIGGER_EXCEPTION:
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raise returned
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elif type == TRIGGER_RETURN:
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return returned
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def add_server(self, server_id: int, connect: bool = True,
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connection_params: typing.Optional[
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utils.irc.IRCConnectionParameters]=None) -> IRCServer.Server:
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if not connection_params:
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connection_params = utils.irc.IRCConnectionParameters(
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*self.database.servers.get(server_id))
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new_server = IRCServer.Server(self, self._events,
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connection_params.id, connection_params.alias, connection_params)
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self._events.on("new.server").call(server=new_server)
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if not connect:
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return new_server
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self.connect(new_server)
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return new_server
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def add_socket(self, sock: socket.socket):
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self.other_sockets[sock.fileno()] = sock
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self.poll.register(sock.fileno(), select.EPOLLIN)
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def remove_socket(self, sock: socket.socket):
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del self.other_sockets[sock.fileno()]
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self.poll.unregister(sock.fileno())
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def get_server(self, id: int) -> typing.Optional[IRCServer.Server]:
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for server in self.servers.values():
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if server.id == id:
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return server
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return None
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def connect(self, server: IRCServer.Server) -> bool:
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try:
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server.connect()
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except:
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self.log.warn("Failed to connect to %s", [str(server)],
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exc_info=True)
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return False
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self.servers[server.fileno()] = server
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self.poll.register(server.fileno(), select.EPOLLOUT)
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return True
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def next_send(self) -> typing.Optional[float]:
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next = None
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for server in self.servers.values():
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timeout = server.socket.send_throttle_timeout()
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if (server.socket.waiting_send() and
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(next == None or timeout < next)):
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next = timeout
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return next
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def next_ping(self) -> typing.Optional[float]:
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timeouts = []
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for server in self.servers.values():
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timeout = server.until_next_ping()
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if not timeout == None:
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timeouts.append(timeout)
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if not timeouts:
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return None
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return min(timeouts)
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def next_read_timeout(self) -> typing.Optional[float]:
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timeouts = []
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for server in self.servers.values():
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timeouts.append(server.until_read_timeout())
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if not timeouts:
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return None
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return min(timeouts)
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def get_poll_timeout(self) -> float:
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timeouts = []
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timeouts.append(self._timers.next())
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timeouts.append(self.next_send())
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timeouts.append(self.next_ping())
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timeouts.append(self.next_read_timeout())
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timeouts.append(self.cache.next_expiration())
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return min([timeout for timeout in timeouts if not timeout == None])
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def register_read(self, server: IRCServer.Server):
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self.poll.modify(server.fileno(), select.EPOLLIN)
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def register_write(self, server: IRCServer.Server):
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self.poll.modify(server.fileno(), select.EPOLLOUT)
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def register_both(self, server: IRCServer.Server):
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self.poll.modify(server.fileno(),
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select.EPOLLIN|select.EPOLLOUT)
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def disconnect(self, server: IRCServer.Server):
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try:
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self.poll.unregister(server.fileno())
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except FileNotFoundError:
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pass
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del self.servers[server.fileno()]
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def _timed_reconnect(self, event: EventManager.Event):
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if not self.reconnect(event["server_id"],
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event.get("connection_params", None)):
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event["timer"].redo()
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def reconnect(self, server_id: int, connection_params: typing.Optional[
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utils.irc.IRCConnectionParameters]=None) -> bool:
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server = self.add_server(server_id, False, connection_params)
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if self.connect(server):
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self.servers[server.fileno()] = server
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return True
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return False
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def set_setting(self, setting: str, value: typing.Any):
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self.database.bot_settings.set(setting, value)
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def get_setting(self, setting: str, default: typing.Any=None) -> typing.Any:
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return self.database.bot_settings.get(setting, default)
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def find_settings(self, pattern: str, default: typing.Any=[]
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) -> typing.List[typing.Any]:
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return self.database.bot_settings.find(pattern, default)
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def find_settings_prefix(self, prefix: str, default: typing.Any=[]
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) -> typing.List[typing.Any]:
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return self.database.bot_settings.find_prefix(
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prefix, default)
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def del_setting(self, setting: str):
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self.database.bot_settings.delete(setting)
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def run(self):
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while self.running:
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if not self.servers:
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break
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events = self.poll.poll(self.get_poll_timeout())
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self.lock.acquire()
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self._timers.call()
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self.cache.expire()
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for func, func_queue in self._trigger_functions:
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try:
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returned = func()
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type = TRIGGER_RETURN
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except Exception as e:
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returned = e
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type = TRIGGER_EXCEPTION
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func_queue.put([type, returned])
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self._trigger_functions.clear()
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for fd, event in events:
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sock = None
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irc = False
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if fd in self.servers:
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sock = self.servers[fd]
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irc = True
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elif fd in self.other_sockets:
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sock = self.other_sockets[fd]
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if sock:
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if event & select.EPOLLIN:
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data = sock.read()
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if data == None:
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sock.disconnect()
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continue
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for piece in data:
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sock.parse_data(piece)
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elif event & select.EPOLLOUT:
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sock._send()
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if sock.fileno() in self.servers:
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self.register_read(sock)
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elif event & select.EPULLHUP:
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self.log.warn("Recieved EPOLLHUP for %s", [str(sock)])
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sock.disconnect()
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for server in list(self.servers.values()):
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if server.read_timed_out():
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self.log.warn("Pinged out from %s", [str(server)])
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server.disconnect()
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elif server.ping_due() and not server.ping_sent:
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server.send_ping()
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server.ping_sent = True
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if not server.socket.connected:
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self._events.on("server.disconnect").call(server=server)
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self.disconnect(server)
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if not self.get_server(server.id):
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reconnect_delay = self.config.get("reconnect-delay", 10)
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self._timers.add("reconnect", reconnect_delay,
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server_id=server.id)
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self.log.warn(
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"Disconnected from %s, reconnecting in %d seconds",
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[str(server), reconnect_delay])
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elif (server.socket.waiting_send() and
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server.socket.throttle_done()):
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self.register_both(server)
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for sock in list(self.other_sockets.values()):
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if not sock.connected:
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self.remove_socket(sock)
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elif sock.waiting_send():
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self.register_both(sock)
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self.lock.release()
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