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https://github.com/jlu5/PyLink.git
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relay: factorize fetching of remote users/SIDs, spawning them if they don't exist
This commit is contained in:
James Lu
parent
994b2961ee
commit
a1299676f1
115
plugins/relay.py
115
plugins/relay.py
@ -15,6 +15,10 @@ from log import log
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dbname = "pylinkrelay.db"
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relayusers = defaultdict(dict)
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relayservers = defaultdict(dict)
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# We need to use a synchronization method here, because multiple threads
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# can call getRelaySid at the same time, and we risk spawning the same
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# pseudoserver more than once, which will cause SQUITs.
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relayservers_lock = threading.Lock()
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def normalizeNick(irc, netname, nick, separator="/"):
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orig_nick = nick
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@ -79,6 +83,37 @@ def getPrefixModes(irc, remoteirc, channel, user):
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modes += remoteirc.cmodes[pmode]
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return modes
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def getRemoteUser(irc, remoteirc, user):
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# If the user (stored here as {(netname, UID):
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# {network1: UID1, network2: UID2}}) exists, don't spawn it
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# again!
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try:
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u = relayusers[(irc.name, user)][remoteirc.name]
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except KeyError:
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userobj = irc.users[user]
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nick = normalizeNick(remoteirc, irc.name, userobj.nick)
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ident = userobj.ident
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host = userobj.host
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realname = userobj.realname
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sid = getRelaySid(irc, remoteirc)
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u = remoteirc.proto.spawnClient(remoteirc, nick, ident=ident,
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host=host, realname=realname,
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server=sid).uid
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remoteirc.users[u].remote = irc.name
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relayusers[(irc.name, user)][remoteirc.name] = u
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remoteirc.users[u].remote = irc.name
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return u
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def getRelaySid(irc, remoteirc):
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with relayservers_lock:
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log.debug('relayservers: %s', relayservers)
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try:
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sid = relayservers[remoteirc.name][irc.name]
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except KeyError: # hasn't been spawned yet.
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sid = irc.proto.spawnServer(irc, '%s.relay' % remoteirc.name)
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relayservers[remoteirc.name][irc.name] = sid
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return sid
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def findRelay(chanpair):
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if chanpair in db: # This chanpair is a shared channel; others link to it
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return chanpair
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@ -87,7 +122,9 @@ def findRelay(chanpair):
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if chanpair in dbentry['links']:
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return name
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def findRemoteChan(remotenetname, query):
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def findRemoteChan(irc, remoteirc, channel):
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query = (irc.name, channel)
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remotenetname = remoteirc.name
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chanpair = findRelay(query)
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if chanpair is None:
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return
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@ -106,6 +143,7 @@ def initializeChannel(irc, channel):
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relay = findRelay((irc.name, channel))
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log.debug('(%s) initializeChannel being called on %s', irc.name, channel)
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log.debug('(%s) initializeChannel: relay pair found to be %s', irc.name, relay)
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queued_users = []
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if relay:
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all_links = db[relay]['links'].copy()
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all_links.update((relay,))
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@ -118,19 +156,18 @@ def initializeChannel(irc, channel):
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remoteirc = utils.networkobjects[remotenet]
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rc = remoteirc.channels[remotechan]
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for user in remoteirc.channels[remotechan].users:
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# Don't spawn our pseudoclients again.
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if not utils.isInternalClient(remoteirc, user):
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log.debug('(%s) initializeChannel: should be joining %s/%s to %s', irc.name, user, remotenet, channel)
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remoteuser = relayusers[(remotenet, user)][irc.name]
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irc.proto.joinClient(irc, remoteuser, channel)
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for m in getPrefixModes(remoteirc, irc, remotechan, user):
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mpair = ('+%s' % m, remoteuser)
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modes.append(mpair)
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if modes:
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sid = relayservers[remotenet][irc.name]
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irc.proto.modeServer(irc, sid, channel, modes, ts=rc.ts)
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log.debug('(%s) initializeChannel: syncing modes %r', irc.name, modes)
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remoteuser = getRemoteUser(remoteirc, irc, user)
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userpair = (getPrefixModes(remoteirc, irc, remotechan, user), remoteuser)
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log.debug('(%s) initializeChannel: adding %s to queued_users for %s', irc.name, userpair, channel)
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queued_users.append(userpair)
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if queued_users:
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sid = getRelaySid(irc, remoteirc)
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irc.proto.sjoinServer(irc, sid, channel, queued_users, ts=rc.ts)
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log.debug('(%s) initializeChannel: relay users: %s', irc.name, c.users)
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log.debug('(%s) initializeChannel: joining our users: %s', irc.name, c.users)
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relayJoins(irc, channel, c.users, c.ts, c.modes)
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def handle_join(irc, numeric, command, args):
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@ -164,8 +201,8 @@ def handle_part(irc, numeric, command, args):
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channel = args['channel']
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text = args['text']
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for netname, user in relayusers[(irc.name, numeric)].items():
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remotechan = findRemoteChan(netname, (irc.name, channel))
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remoteirc = utils.networkobjects[netname]
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remotechan = findRemoteChan(irc, remoteirc, channel)
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remoteirc.proto.partClient(remoteirc, user, remotechan, text)
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utils.add_hook(handle_part, 'PART')
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@ -183,66 +220,34 @@ def relayJoins(irc, channel, users, ts, modes):
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# We don't need to clone the PyLink pseudoclient... That's
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# meaningless.
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continue
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userobj = irc.users[user]
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userpair_index = relayusers.get((irc.name, user))
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ident = userobj.ident
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host = userobj.host
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realname = userobj.realname
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log.debug('Okay, spawning %s/%s everywhere', user, irc.name)
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for name, remoteirc in utils.networkobjects.items():
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if name == irc.name:
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# Don't relay things to their source network...
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continue
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try: # Spawn our pseudoserver first
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relayservers[remoteirc.name][irc.name] = sid = \
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remoteirc.proto.spawnServer(remoteirc, '%s.relay' % irc.name,
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endburst=False)
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# We want to wait a little bit for the remote IRCd to send their users,
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# so we can join them as part of a burst on remote networks.
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# Because IRC is asynchronous, we can't really control how long
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# this will take.
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endburst_timer = threading.Timer(0.5, remoteirc.proto.endburstServer,
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args=(remoteirc, sid))
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log.debug('(%s) Setting timer to BURST %s', remoteirc.name, sid)
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endburst_timer.start()
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except ValueError:
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# Server already exists (raised by the protocol module).
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sid = relayservers[remoteirc.name][irc.name]
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sid = getRelaySid(remoteirc, irc)
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log.debug('(%s) Have we bursted %s yet? %s', remoteirc.name, sid,
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remoteirc.servers[sid].has_bursted)
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nick = normalizeNick(remoteirc, irc.name, userobj.nick)
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# If the user (stored here as {(netname, UID):
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# {network1: UID1, network2: UID2}}) exists, don't spawn it
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# again!
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u = None
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if userpair_index is not None:
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u = userpair_index.get(remoteirc.name)
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if u is None: # .get() returns None if not found
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u = remoteirc.proto.spawnClient(remoteirc, nick, ident=ident,
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host=host, realname=realname,
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server=sid).uid
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remoteirc.users[u].remote = irc.name
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relayusers[(irc.name, userobj.uid)][remoteirc.name] = u
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remoteirc.users[u].remote = irc.name
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remotechan = findRemoteChan(remoteirc.name, (irc.name, channel))
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u = getRemoteUser(irc, remoteirc, user)
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remotechan = findRemoteChan(irc, remoteirc, channel)
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if remotechan is None:
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continue
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if not remoteirc.servers[sid].has_bursted:
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# TODO: join users in batches with SJOIN, not one by one.
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prefixes = getPrefixModes(irc, remoteirc, channel, user)
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remoteirc.proto.sjoinServer(remoteirc, sid, remotechan, [(prefixes, u)], ts=ts)
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else:
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remoteirc.proto.joinClient(remoteirc, u, remotechan)
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ts = irc.channels[channel].ts
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# TODO: join users in batches with SJOIN, not one by one.
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prefixes = getPrefixModes(irc, remoteirc, channel, user)
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userpair = (prefixes, u)
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log.debug('(%s) relayJoin: joining %s to %s%s', irc.name, userpair, remoteirc.name, remotechan)
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remoteirc.proto.sjoinServer(remoteirc, sid, remotechan, [userpair], ts=ts)
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def relayPart(irc, channel, user):
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for name, remoteirc in utils.networkobjects.items():
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if name == irc.name:
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# Don't relay things to their source network...
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continue
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remotechan = findRemoteChan(remoteirc.name, (irc.name, channel))
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remotechan = findRemoteChan(irc, remoteirc, channel)
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log.debug('(%s) relayPart: looking for %s/%s on %s', irc.name, user, irc.name, remoteirc.name)
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log.debug('(%s) relayPart: remotechan found as %s', irc.name, remotechan)
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remoteuser = relayusers[(irc.name, user)][remoteirc.name]
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remoteuser = getRemoteUser(irc, remoteirc, user)
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log.debug('(%s) relayPart: remoteuser for %s/%s found as %s', irc.name, user, irc.name, remoteuser)
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if remotechan is None:
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continue
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