OpenCloud
/
MatrixSynapse
mirror of https://github.com/matrix-org/synapse
1
0
Fork 0
Code Issues Releases Wiki Activity

Move stream catchup to workers.

pull/7024/head
Erik Johnston 2020-03-03 14:19:23 +00:00
parent ba90596687
commit 1f83255de1
6 changed files with 135 additions and 85 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
synapse/replication/tcp/client.py
View File

@ -55,6 +55,7 @@ class ReplicationClientFactory(ReconnectingClientFactory):
self.client_name = client_name
self.handler = handler
self.server_name = hs.config.server_name
self.hs = hs
self._clock = hs.get_clock() # As self.clock is defined in super class
hs.get_reactor().addSystemEventTrigger("before", "shutdown", self.stopTrying)
@ -65,7 +66,7 @@ class ReplicationClientFactory(ReconnectingClientFactory):
def buildProtocol(self, addr):
logger.info("Connected to replication: %r", addr)
return ClientReplicationStreamProtocol(
self.client_name, self.server_name, self._clock, self.handler
self.hs, self.client_name, self.server_name, self._clock, self.handler,
)
def clientConnectionLost(self, connector, reason):

105
synapse/replication/tcp/protocol.py
View File

@ -82,7 +82,8 @@ from synapse.replication.tcp.commands import (
SyncCommand,
UserSyncCommand,
)
from synapse.replication.tcp.streams import STREAMS_MAP
from synapse.replication.tcp.streams import STREAMS_MAP, Stream
from synapse.server import HomeServer
from synapse.types import Collection
from synapse.util import Clock
from synapse.util.stringutils import random_string
@ -414,9 +415,6 @@ class ServerReplicationStreamProtocol(BaseReplicationStreamProtocol):
# The streams the client has subscribed to and is up to date with
self.replication_streams = set() # type: Set[str]
# The streams the client is currently subscribing to.
self.connecting_streams = set() # type: Set[str]
# Map from stream name to list of updates to send once we've finished
# subscribing the client to the stream.
self.pending_rdata = {} # type: Dict[str, List[Tuple[int, Any]]]
@ -482,67 +480,21 @@ class ServerReplicationStreamProtocol(BaseReplicationStreamProtocol):
are queued and sent once we've sent down any missed updates.
"""
self.replication_streams.discard(stream_name)
self.connecting_streams.add(stream_name)
try:
limited = True
while limited:
# Get missing updates
(
updates,
current_token,
limited,
) = await self.streamer.get_stream_updates(stream_name, token)
# Send all the missing updates
for update in updates:
token, row = update[0], update[1]
self.send_command(RdataCommand(stream_name, token, row))
# Get current stream position.
current_token = self.streamer.get_stream_token(stream_name)
# We send a POSITION command to ensure that they have an up to
# date token (especially useful if we didn't send any updates
# above)
self.send_command(PositionCommand(stream_name, current_token))
# Now we can send any updates that came in while we were subscribing
pending_rdata = self.pending_rdata.pop(stream_name, [])
updates = []
for token, update in pending_rdata:
# If the token is null, it is part of a batch update. Batches
# are multiple updates that share a single token. To denote
# this, the token is set to None for all tokens in the batch
# except for the last. If we find a None token, we keep looking
# through tokens until we find one that is not None and then
# process all previous updates in the batch as if they had the
# final token.
if token is None:
# Store this update as part of a batch
updates.append(update)
continue
if token <= current_token:
# This update or batch of updates is older than
# current_token, dismiss it
updates = []
continue
updates.append(update)
# Send all updates that are part of this batch with the
# found token
for update in updates:
self.send_command(RdataCommand(stream_name, token, update))
# Clear stored updates
updates = []
# They're now fully subscribed
self.replication_streams.add(stream_name)
except Exception as e:
logger.exception("[%s] Failed to handle REPLICATE command", self.id())
self.send_error("failed to handle replicate: %r", e)
finally:
self.connecting_streams.discard(stream_name)
def stream_update(self, stream_name, token, data):
"""Called when a new update is available to stream to clients.
@ -552,10 +504,6 @@ class ServerReplicationStreamProtocol(BaseReplicationStreamProtocol):
if stream_name in self.replication_streams:
# The client is subscribed to the stream
self.send_command(RdataCommand(stream_name, token, data))
elif stream_name in self.connecting_streams:
# The client is being subscribed to the stream
logger.debug("[%s] Queuing RDATA %r %r", self.id(), stream_name, token)
self.pending_rdata.setdefault(stream_name, []).append((token, data))
else:
# The client isn't subscribed
logger.debug("[%s] Dropping RDATA %r %r", self.id(), stream_name, token)
@ -642,6 +590,7 @@ class ClientReplicationStreamProtocol(BaseReplicationStreamProtocol):
def __init__(
self,
hs: HomeServer,
client_name: str,
server_name: str,
clock: Clock,
@ -653,6 +602,10 @@ class ClientReplicationStreamProtocol(BaseReplicationStreamProtocol):
self.server_name = server_name
self.handler = handler
self.streams = {
stream.NAME: stream(hs) for stream in STREAMS_MAP.values()
} # type: Dict[str, Stream]
# Set of stream names that have been subscribe to, but haven't yet
# caught up with. This is used to track when the client has been fully
# connected to the remote.
@ -660,7 +613,7 @@ class ClientReplicationStreamProtocol(BaseReplicationStreamProtocol):
# Map of stream to batched updates. See RdataCommand for info on how
# batching works.
self.pending_batches = {} # type: Dict[str, Any]
self.pending_batches = {} # type: Dict[str, List[Any]]
def connectionMade(self):
self.send_command(NameCommand(self.client_name))
@ -701,7 +654,7 @@ class ClientReplicationStreamProtocol(BaseReplicationStreamProtocol):
)
raise
if cmd.token is None:
if cmd.token is None or stream_name in self.streams_connecting:
# I.e. this is part of a batch of updates for this stream. Batch
# until we get an update for the stream with a non None token
self.pending_batches.setdefault(stream_name, []).append(row)
@ -711,14 +664,46 @@ class ClientReplicationStreamProtocol(BaseReplicationStreamProtocol):
rows.append(row)
await self.handler.on_rdata(stream_name, cmd.token, rows)
async def on_POSITION(self, cmd):
async def on_POSITION(self, cmd: PositionCommand):
stream = self.streams.get(cmd.stream_name)
if not stream:
logger.error("Got POSITION for unknown stream: %s", cmd.stream_name)
return
# Find where we previously streamed up to.
current_token = self.handler.get_streams_to_replicate().get(cmd.stream_name)
if current_token is None:
logger.warning(
"Got POSITION for stream we're not subscribed to: %s", cmd.stream_name
)
return
# Fetch all updates between then and now.
limited = True
while limited:
updates, current_token, limited = await stream.get_updates_since(
current_token, cmd.token
)
if updates:
await self.handler.on_rdata(
cmd.stream_name,
current_token,
[stream.parse_row(update[1]) for update in updates],
)
# We've now caught up to position sent to us, notify handler.
await self.handler.on_position(cmd.stream_name, cmd.token)
# When we get a `POSITION` command it means we've finished getting
# missing updates for the given stream, and are now up to date.
self.streams_connecting.discard(cmd.stream_name)
if not self.streams_connecting:
self.handler.finished_connecting()
await self.handler.on_position(cmd.stream_name, cmd.token)
# Handle any RDATA that came in while we were catching up.
rows = self.pending_batches.pop(cmd.stream_name, [])
if rows:
await self.handler.on_rdata(cmd.stream_name, rows[-1].token, rows)
async def on_SYNC(self, cmd):
self.handler.on_sync(cmd.data)

5
synapse/replication/tcp/resource.py
View File

@ -227,8 +227,7 @@ class ReplicationStreamer(object):
self.pending_updates = False
self.is_looping = False
@measure_func("repl.get_stream_updates")
async def get_stream_updates(self, stream_name, token):
def get_stream_token(self, stream_name):
"""For a given stream get all updates since token. This is called when
a client first subscribes to a stream.
"""
@ -236,7 +235,7 @@ class ReplicationStreamer(object):
if not stream:
raise Exception("unknown stream %s", stream_name)
return await stream.get_updates_since(token, stream.current_token())
return stream.current_token()
@measure_func("repl.federation_ack")
def federation_ack(self, token):

6
synapse/replication/tcp/streams/__init__.py
View File

@ -27,7 +27,8 @@ Each stream is defined by the following information:
from typing import Dict, Type
from . import _base, events, federation
from synapse.replication.tcp.streams import _base, events, federation
from synapse.replication.tcp.streams._base import Stream
STREAMS_MAP = {
stream.NAME: stream
@ -50,3 +51,6 @@ STREAMS_MAP = {
_base.UserSignatureStream,
)
} # type: Dict[str, Type[_base.Stream]]
__all__ = ["Stream", "STREAMS_MAP"]

51
tests/replication/tcp/streams/_base.py
View File

@ -12,6 +12,7 @@
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from mock import Mock
from synapse.replication.tcp.commands import ReplicateCommand
@ -29,19 +30,37 @@ class BaseStreamTestCase(unittest.HomeserverTestCase):
# build a replication server
server_factory = ReplicationStreamProtocolFactory(self.hs)
self.streamer = server_factory.streamer
server = server_factory.buildProtocol(None)
self.server = server_factory.buildProtocol(None)
# build a replication client, with a dummy handler
handler_factory = Mock()
self.test_handler = TestReplicationClientHandler()
self.test_handler.factory = handler_factory
self.test_handler = Mock(wraps=TestReplicationClientHandler())
self.client = ClientReplicationStreamProtocol(
"client", "test", clock, self.test_handler
hs, "client", "test", clock, self.test_handler,
)
# wire them together
self.client.makeConnection(FakeTransport(server, reactor))
server.makeConnection(FakeTransport(self.client, reactor))
self._client_transport = None
self._server_transport = None
def reconnect(self):
if self._client_transport:
self.client.close()
if self._server_transport:
self.server.close()
self._client_transport = FakeTransport(self.server, self.reactor)
self.client.makeConnection(self._client_transport)
self._server_transport = FakeTransport(self.client, self.reactor)
self.server.makeConnection(self._server_transport)
def disconnect(self):
if self._client_transport:
self._client_transport = None
self.client.close()
if self._server_transport:
self._server_transport = None
self.server.close()
def replicate(self):
"""Tell the master side of replication that something has happened, and then
@ -59,10 +78,15 @@ class TestReplicationClientHandler(object):
"""Drop-in for ReplicationClientHandler which just collects RDATA rows"""
def __init__(self):
self.received_rdata_rows = []
self.streams = set()
self._received_rdata_rows = []
def get_streams_to_replicate(self):
return {}
positions = {s: 0 for s in self.streams}
for stream, token, _ in self._received_rdata_rows:
if stream in self.streams:
positions[stream] = max(token, positions.get(stream, 0))
return positions
def get_currently_syncing_users(self):
return []
@ -73,6 +97,9 @@ class TestReplicationClientHandler(object):
def finished_connecting(self):
pass
async def on_position(self, stream_name, token):
"""Called when we get new position data."""
async def on_rdata(self, stream_name, token, rows):
for r in rows:
self.received_rdata_rows.append((stream_name, token, r))
self._received_rdata_rows.append((stream_name, token, r))

50
tests/replication/tcp/streams/test_receipts.py
View File

@ -17,30 +17,64 @@ from synapse.replication.tcp.streams._base import ReceiptsStreamRow
from tests.replication.tcp.streams._base import BaseStreamTestCase
USER_ID = "@feeling:blue"
ROOM_ID = "!room:blue"
EVENT_ID = "$event:blue"
class ReceiptsStreamTestCase(BaseStreamTestCase):
def test_receipt(self):
self.reconnect()
# make the client subscribe to the receipts stream
self.replicate_stream("receipts", "NOW")
self.test_handler.streams.add("receipts")
# tell the master to send a new receipt
self.get_success(
self.hs.get_datastore().insert_receipt(
ROOM_ID, "m.read", USER_ID, [EVENT_ID], {"a": 1}
"!room:blue", "m.read", USER_ID, ["$event:blue"], {"a": 1}
)
)
self.replicate()
# there should be one RDATA command
rdata_rows = self.test_handler.received_rdata_rows
self.test_handler.on_rdata.assert_called_once()
stream_name, token, rdata_rows = self.test_handler.on_rdata.call_args[0]
self.assertEqual(stream_name, "receipts")
self.assertEqual(1, len(rdata_rows))
self.assertEqual(rdata_rows[0][0], "receipts")
row = rdata_rows[0][2] # type: ReceiptsStreamRow
self.assertEqual(ROOM_ID, row.room_id)
row = rdata_rows[0] # type: ReceiptsStreamRow
self.assertEqual("!room:blue", row.room_id)
self.assertEqual("m.read", row.receipt_type)
self.assertEqual(USER_ID, row.user_id)
self.assertEqual(EVENT_ID, row.event_id)
self.assertEqual("$event:blue", row.event_id)
self.assertEqual({"a": 1}, row.data)
# Now let's disconnect and insert some data.
self.disconnect()
self.test_handler.on_rdata.reset_mock()
self.get_success(
self.hs.get_datastore().insert_receipt(
"!room2:blue", "m.read", USER_ID, ["$event2:foo"], {"a": 2}
)
)
self.replicate()
# Nothing should have happened as we are disconnected
self.test_handler.on_rdata.assert_not_called()
self.reconnect()
self.pump(0.1)
# We should now have caught up and get the missing data
self.test_handler.on_rdata.assert_called_once()
stream_name, token, rdata_rows = self.test_handler.on_rdata.call_args[0]
self.assertEqual(stream_name, "receipts")
self.assertEqual(token, 3)
self.assertEqual(1, len(rdata_rows))
row = rdata_rows[0] # type: ReceiptsStreamRow
self.assertEqual("!room2:blue", row.room_id)
self.assertEqual("m.read", row.receipt_type)
self.assertEqual(USER_ID, row.user_id)
self.assertEqual("$event2:foo", row.event_id)
self.assertEqual({"a": 2}, row.data)