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https://github.com/Mikaela/Limnoria.git
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[wip] support outgoing batches
This commit is contained in:
Valentin Lorentz
parent
8b90884fa0
commit
e19436a4ba
@ -1218,6 +1218,15 @@ class Irc(IrcCommandDispatcher, log.Firewalled):
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self.state = IrcState()
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self.queue = IrcMsgQueue()
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self.fastqueue = smallqueue()
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# Messages of batches that are currently in one self.queue (not
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# self.fastqueue).
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# This works by adding only the first message of a batch in a queue,
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# and when self.takeMsg pops that message from the queue, it will
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# also pop the whole batch from self._queued_batches and atomically
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# add it to self.fastqueue
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self._queued_batches = {}
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self.driver = None # The driver should set this later.
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self._setNonResettingVariables()
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self._queueConnectMessages()
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@ -1306,6 +1315,9 @@ class Irc(IrcCommandDispatcher, log.Firewalled):
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def queueMsg(self, msg):
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"""Queues a message to be sent to the server."""
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if msg.command.upper() == 'BATCH':
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log.error('Tried to send a BATCH message using queueMsg '
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'instead of queueBatch: %r', msg)
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if not self.zombie:
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return self.queue.enqueue(msg)
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else:
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@ -1314,11 +1326,60 @@ class Irc(IrcCommandDispatcher, log.Firewalled):
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def sendMsg(self, msg):
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"""Queues a message to be sent to the server *immediately*"""
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if msg.command.upper() == 'BATCH':
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log.error('Tried to send a BATCH message using sendMsg '
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'instead of queueBatch: %r', msg)
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if not self.zombie:
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self.fastqueue.enqueue(msg)
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else:
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log.warning('Refusing to send %r; %s is a zombie.', msg, self)
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def queueBatch(self, msgs):
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"""Queues a batch of messages to be sent to the server.
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See <https://ircv3.net/specs/extensions/batch-3.2>
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queueMsg/sendMsg must not be used repeatedly to send a batch, because
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they do not guarantee the batch is send atomically, which is
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required because "Clients MUST NOT send messages other than PRIVMSG
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while a multiline batch is open."
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-- <https://ircv3.net/specs/extensions/multiline>
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"""
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if not conf.supybot.protocols.irc.experimentalExtensions():
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log.error('queueBatch is disabled because it depends on draft '
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'IRC specifications. If you know what you are doing, '
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'set supybot.protocols.irc.experimentalExtensions.')
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return
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if len(msg) < 2:
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log.error('queueBatch called with less than two messages.')
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return
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if msgs[0].command.upper() != 'BATCH' or msgs[0].args[0][0] != '+':
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log.error('queueBatch called with non-"BATCH +" as first message.')
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return
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if msgs[-1].command.upper() != 'BATCH' or msgs[-1].args[0][0] != '-':
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log.error('queueBatch called with non-"BATCH -" as last message.')
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return
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batch_name = msgs[0].args[0][1:]
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if msgs[0].args[0][1:] != batch_name:
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log.error('queueBatch called with mismatched BATCH name args.')
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return
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if any(msg.server_tags.get('batch') != batch_name for msg in msgs):
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log.error('queueBatch called with mismatched batch names.')
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return
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if batch_name in self._queued_batches:
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log.error('queueBatch called with a batch name already in flight')
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return
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self._queued_batches[batch_name] = msgs
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# Enqueue only the start of the batch. When takeMsg sees it, it will
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# enqueue the full batch in self.fastqueue.
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# We don't enqueue the full batch in self.fastqueue here, because
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# there is no reason for this batch to jump in front of all other
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# queued messages.
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# TODO: the batch will be ordered with the priority of a BATCH
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# message (ie. normal), but if the batch is made only of low-priority
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# messages like PRIVMSG, it should have that priority.
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self.queue.enqueue(msgs[0])
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def _truncateMsg(self, msg):
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msg_str = str(msg)
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if msg_str[0] == '@':
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@ -1381,7 +1442,36 @@ class Irc(IrcCommandDispatcher, log.Firewalled):
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now = str(int(now))
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self.outstandingPing = True
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self.queueMsg(ircmsgs.ping(now))
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if msg:
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if msg.command.upper() == 'BATCH':
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if not conf.supybot.protocols.irc.experimentalExtensions():
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log.error('Dropping outgoing batch.'
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'supybot.protocols.irc.experimentalExtensions'
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'is disabled, so plugins should not send '
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'batches. This is a bug, please report it.')
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return None
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if msg.args[0].startswith('+'):
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# Start of a batch; created by self.queueBatch. We need to
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# add *prepend* the rest of the batch to the fastqueue
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# so that no other message is sent while the batch is
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# open.
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# "Clients MUST NOT send messages other than PRIVMSG while
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# a multiline batch is open."
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# -- <https://ircv3.net/specs/extensions/multiline>
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#
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# (Yes, *prepend* to the queue. Fortunately, it should be
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# empty, because BATCH cannot be queued in the fastqueue
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# and we just got a BATCH, which means it's from the
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# regular queue, which means the fastqueue is empty.
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# But let's not take any risk, eg. if race condition
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# with a plugin appending directly to the fastqueue.)
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batch_messages = self._queued_batches
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if batch_messages[0] != msg:
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log.error('Enqueue "BATCH +" message does not match '
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'the one of the batch in flight.')
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self.fastqueue[:0] = batch_messages[1:]
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if not world.testing and 'label' not in msg.server_tags \
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and 'labeled-response' in self.state.capabilities_ack:
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# Not adding labels while testing, because it would break
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