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Add a few more comments to the federation handler

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Erik Johnston 2014-11-12 16:20:21 +00:00
parent e715741abc
commit b2596c660b
1 changed files with 32 additions and 0 deletions
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32
synapse/handlers/federation.py
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@ -40,6 +40,8 @@ class FederationHandler(BaseHandler):
of the home server (including auth and state conflict resoultion)
b) converting events that were produced by local clients that may need
to be sent to remote home servers.
c) doing the necessary dances to invite remote users and join remote
rooms.
"""
def __init__(self, hs):
@ -102,6 +104,8 @@ class FederationHandler(BaseHandler):
logger.debug("Got event: %s", event.event_id)
# If we are currently in the process of joining this room, then we
# queue up events for later processing.
if event.room_id in self.room_queues:
self.room_queues[event.room_id].append(pdu)
return
@ -187,6 +191,8 @@ class FederationHandler(BaseHandler):
@log_function
@defer.inlineCallbacks
def backfill(self, dest, room_id, limit):
""" Trigger a backfill request to `dest` for the given `room_id`
"""
extremities = yield self.store.get_oldest_events_in_room(room_id)
pdus = yield self.replication_layer.backfill(
@ -212,6 +218,10 @@ class FederationHandler(BaseHandler):
@defer.inlineCallbacks
def send_invite(self, target_host, event):
""" Sends the invite to the remote server for signing.
Invites must be signed by the invitee's server before distribution.
"""
pdu = yield self.replication_layer.send_invite(
destination=target_host,
context=event.room_id,
@ -229,6 +239,17 @@ class FederationHandler(BaseHandler):
@log_function
@defer.inlineCallbacks
def do_invite_join(self, target_host, room_id, joinee, content, snapshot):
""" Attempts to join the `joinee` to the room `room_id` via the
server `target_host`.
This first triggers a /make_join/ request that returns a partial
event that we can fill out and sign. This is then sent to the
remote server via /send_join/ which responds with the state at that
event and the auth_chains.
We suspend processing of any received events from this room until we
have finished processing the join.
"""
pdu = yield self.replication_layer.make_join(
target_host,
room_id,
@ -313,6 +334,10 @@ class FederationHandler(BaseHandler):
@defer.inlineCallbacks
@log_function
def on_make_join_request(self, context, user_id):
""" We've received a /make_join/ request, so we create a partial
join event for the room and return that. We don *not* persist or
process it until the other server has signed it and sent it back.
"""
event = self.event_factory.create_event(
etype=RoomMemberEvent.TYPE,
content={"membership": Membership.JOIN},
@ -335,6 +360,9 @@ class FederationHandler(BaseHandler):
@defer.inlineCallbacks
@log_function
def on_send_join_request(self, origin, pdu):
""" We have received a join event for a room. Fully process it and
respond with the current state and auth chains.
"""
event = self.pdu_codec.event_from_pdu(pdu)
event.outlier = False
@ -403,6 +431,10 @@ class FederationHandler(BaseHandler):
@defer.inlineCallbacks
def on_invite_request(self, origin, pdu):
""" We've got an invite event. Process and persist it. Sign it.
Respond with the now signed event.
"""
event = self.pdu_codec.event_from_pdu(pdu)
event.outlier = True