Explicit federation ack

This commit is contained in:
Erik Johnston 2016-11-23 10:40:44 +00:00
parent 54fed21c04
commit 4c79a63fd7
3 changed files with 25 additions and 8 deletions

View file

@ -235,7 +235,10 @@ class FederationSenderHandler(object):
@defer.inlineCallbacks
def stream_positions(self):
stream_id = yield self.store.get_federation_out_pos("federation")
defer.returnValue({"federation": stream_id})
defer.returnValue({
"federation": stream_id,
"federation_ack": stream_id,
})
@defer.inlineCallbacks
def process_replication(self, result):

View file

@ -213,7 +213,15 @@ class FederationRemoteSendQueue(object):
def get_current_token(self):
return self.pos - 1
def get_replication_rows(self, token, limit):
def get_replication_rows(self, token, limit, federation_ack=None):
"""
Args:
token (int)
limit (int)
federation_ack (int): Optional. The position where the worker is
explicitly acknowledged it has handled. Allows us to drop
data from before that point
"""
# TODO: Handle limit.
# To handle restarts where we wrap around
@ -224,7 +232,8 @@ class FederationRemoteSendQueue(object):
# There should be only one reader, so lets delete everything its
# acknowledged its seen.
self._clear_queue_before_pos(token)
if federation_ack:
self._clear_queue_before_pos(federation_ack)
# Fetch changed presence
keys = self.presence_changed.keys()

View file

@ -171,8 +171,13 @@ class ReplicationResource(Resource):
}
request_streams["streams"] = parse_string(request, "streams")
federation_ack = parse_integer(request, "federation_ack", None)
def replicate():
return self.replicate(request_streams, limit)
return self.replicate(
request_streams, limit,
federation_ack=federation_ack
)
writer = yield self.notifier.wait_for_replication(replicate, timeout)
result = writer.finish()
@ -190,7 +195,7 @@ class ReplicationResource(Resource):
finish_request(request)
@defer.inlineCallbacks
def replicate(self, request_streams, limit):
def replicate(self, request_streams, limit, federation_ack=None):
writer = _Writer()
current_token = yield self.current_replication_token()
logger.debug("Replicating up to %r", current_token)
@ -209,7 +214,7 @@ class ReplicationResource(Resource):
yield self.caches(writer, current_token, limit, request_streams)
yield self.to_device(writer, current_token, limit, request_streams)
yield self.public_rooms(writer, current_token, limit, request_streams)
self.federation(writer, current_token, limit, request_streams)
self.federation(writer, current_token, limit, request_streams, federation_ack)
self.streams(writer, current_token, request_streams)
logger.debug("Replicated %d rows", writer.total)
@ -473,7 +478,7 @@ class ReplicationResource(Resource):
"position", "room_id", "visibility"
), position=upto_token)
def federation(self, writer, current_token, limit, request_streams):
def federation(self, writer, current_token, limit, request_streams, federation_ack):
if self.config.send_federation:
return
@ -483,7 +488,7 @@ class ReplicationResource(Resource):
if federation is not None and federation != current_position:
federation_rows = self.federation_sender.get_replication_rows(
federation, limit,
federation, limit, federation_ack=federation_ack,
)
upto_token = _position_from_rows(federation_rows, current_position)
writer.write_header_and_rows("federation", federation_rows, (