Matrix-Mirrors/anonymousland-synapse
1
0
Fork 0
mirror of https://git.anonymousland.org/anonymousland/synapse.git synced 2025-05-02 11:56:07 -04:00
Code Issues Projects Releases Packages Wiki Activity

Move server command handling out of TCP protocol (#7187)

Browse source 
This completes the merging of server and client command processing.
This commit is contained in:
Erik Johnston 2020-04-07 10:51:07 +01:00 • committed by GitHub
parent 71953139d1
commit 82498ee901
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
4 changed files with 238 additions and 270 deletions
Download patch file Download diff file Expand all files Collapse all files

179
synapse/replication/tcp/handler.py
View file

@ -19,8 +19,10 @@ from typing import Any, Callable, Dict, List, Optional, Set
from prometheus_client import Counter
from synapse.metrics import LaterGauge
from synapse.replication.tcp.client import ReplicationClientFactory
from synapse.replication.tcp.commands import (
ClearUserSyncsCommand,
Command,
FederationAckCommand,
InvalidateCacheCommand,
@ -28,10 +30,12 @@ from synapse.replication.tcp.commands import (
RdataCommand,
RemoteServerUpCommand,
RemovePusherCommand,
ReplicateCommand,
SyncCommand,
UserIpCommand,
UserSyncCommand,
)
from synapse.replication.tcp.protocol import AbstractConnection
from synapse.replication.tcp.streams import STREAMS_MAP, Stream
from synapse.util.async_helpers import Linearizer
@ -42,6 +46,13 @@ logger = logging.getLogger(__name__)
inbound_rdata_count = Counter(
"synapse_replication_tcp_protocol_inbound_rdata_count", "", ["stream_name"]
)
user_sync_counter = Counter("synapse_replication_tcp_resource_user_sync", "")
federation_ack_counter = Counter("synapse_replication_tcp_resource_federation_ack", "")
remove_pusher_counter = Counter("synapse_replication_tcp_resource_remove_pusher", "")
invalidate_cache_counter = Counter(
"synapse_replication_tcp_resource_invalidate_cache", ""
)
user_ip_cache_counter = Counter("synapse_replication_tcp_resource_user_ip_cache", "")
class ReplicationCommandHandler:
@ -52,6 +63,10 @@ class ReplicationCommandHandler:
def __init__(self, hs):
self._replication_data_handler = hs.get_replication_data_handler()
self._presence_handler = hs.get_presence_handler()
self._store = hs.get_datastore()
self._notifier = hs.get_notifier()
self._clock = hs.get_clock()
self._instance_id = hs.get_instance_id()
# Set of streams that we've caught up with.
self._streams_connected = set() # type: Set[str]
@ -69,8 +84,26 @@ class ReplicationCommandHandler:
# The factory used to create connections.
self._factory = None # type: Optional[ReplicationClientFactory]
# The current connection. None if we are currently (re)connecting
self._connection = None
# The currently connected connections.
self._connections = [] # type: List[AbstractConnection]
LaterGauge(
"synapse_replication_tcp_resource_total_connections",
"",
[],
lambda: len(self._connections),
)
self._is_master = hs.config.worker_app is None
self._federation_sender = None
if self._is_master and not hs.config.send_federation:
self._federation_sender = hs.get_federation_sender()
self._server_notices_sender = None
if self._is_master:
self._server_notices_sender = hs.get_server_notices_sender()
self._notifier.add_remote_server_up_callback(self.send_remote_server_up)
def start_replication(self, hs):
"""Helper method to start a replication connection to the remote server
@ -82,6 +115,70 @@ class ReplicationCommandHandler:
port = hs.config.worker_replication_port
hs.get_reactor().connectTCP(host, port, self._factory)
async def on_REPLICATE(self, cmd: ReplicateCommand):
# We only want to announce positions by the writer of the streams.
# Currently this is just the master process.
if not self._is_master:
return
for stream_name, stream in self._streams.items():
current_token = stream.current_token()
self.send_command(PositionCommand(stream_name, current_token))
async def on_USER_SYNC(self, cmd: UserSyncCommand):
user_sync_counter.inc()
if self._is_master:
await self._presence_handler.update_external_syncs_row(
cmd.instance_id, cmd.user_id, cmd.is_syncing, cmd.last_sync_ms
)
async def on_CLEAR_USER_SYNC(self, cmd: ClearUserSyncsCommand):
if self._is_master:
await self._presence_handler.update_external_syncs_clear(cmd.instance_id)
async def on_FEDERATION_ACK(self, cmd: FederationAckCommand):
federation_ack_counter.inc()
if self._federation_sender:
self._federation_sender.federation_ack(cmd.token)
async def on_REMOVE_PUSHER(self, cmd: RemovePusherCommand):
remove_pusher_counter.inc()
if self._is_master:
await self._store.delete_pusher_by_app_id_pushkey_user_id(
app_id=cmd.app_id, pushkey=cmd.push_key, user_id=cmd.user_id
)
self._notifier.on_new_replication_data()
async def on_INVALIDATE_CACHE(self, cmd: InvalidateCacheCommand):
invalidate_cache_counter.inc()
if self._is_master:
# We invalidate the cache locally, but then also stream that to other
# workers.
await self._store.invalidate_cache_and_stream(
cmd.cache_func, tuple(cmd.keys)
)
async def on_USER_IP(self, cmd: UserIpCommand):
user_ip_cache_counter.inc()
if self._is_master:
await self._store.insert_client_ip(
cmd.user_id,
cmd.access_token,
cmd.ip,
cmd.user_agent,
cmd.device_id,
cmd.last_seen,
)
if self._server_notices_sender:
await self._server_notices_sender.on_user_ip(cmd.user_id)
async def on_RDATA(self, cmd: RdataCommand):
stream_name = cmd.stream_name
inbound_rdata_count.labels(stream_name).inc()
@ -174,6 +271,9 @@ class ReplicationCommandHandler:
""""Called when get a new REMOTE_SERVER_UP command."""
self._replication_data_handler.on_remote_server_up(cmd.data)
if self._is_master:
self._notifier.notify_remote_server_up(cmd.data)
def get_currently_syncing_users(self):
"""Get the list of currently syncing users (if any). This is called
when a connection has been established and we need to send the
@ -181,29 +281,63 @@ class ReplicationCommandHandler:
"""
return self._presence_handler.get_currently_syncing_users()
def update_connection(self, connection):
"""Called when a connection has been established (or lost with None).
def new_connection(self, connection: AbstractConnection):
"""Called when we have a new connection.
"""
self._connection = connection
self._connections.append(connection)
def finished_connecting(self):
"""Called when we have successfully subscribed and caught up to all
streams we're interested in.
"""
logger.info("Finished connecting to server")
# We don't reset the delay any earlier as otherwise if there is a
# problem during start up we'll end up tight looping connecting to the
# server.
# If we are connected to replication as a client (rather than a server)
# we need to reset the reconnection delay on the client factory (which
# is used to do exponential back off when the connection drops).
#
# Ideally we would reset the delay when we've "fully established" the
# connection (for some definition thereof) to stop us from tightlooping
# on reconnection if something fails after this point and we drop the
# connection. Unfortunately, we don't really have a better definition of
# "fully established" than the connection being established.
if self._factory:
self._factory.resetDelay()
def send_command(self, cmd: Command):
"""Send a command to master (when we get establish a connection if we
don't have one already.)
# Tell the server if we have any users currently syncing (should only
# happen on synchrotrons)
currently_syncing = self.get_currently_syncing_users()
now = self._clock.time_msec()
for user_id in currently_syncing:
connection.send_command(
UserSyncCommand(self._instance_id, user_id, True, now)
)
def lost_connection(self, connection: AbstractConnection):
"""Called when a connection is closed/lost.
"""
if self._connection:
self._connection.send_command(cmd)
try:
self._connections.remove(connection)
except ValueError:
pass
def connected(self) -> bool:
"""Do we have any replication connections open?
Is used by e.g. `ReplicationStreamer` to no-op if nothing is connected.
"""
return bool(self._connections)
def send_command(self, cmd: Command):
"""Send a command to all connected connections.
"""
if self._connections:
for connection in self._connections:
try:
connection.send_command(cmd)
except Exception:
# We probably want to catch some types of exceptions here
# and log them as warnings (e.g. connection gone), but I
# can't find what those exception types they would be.
logger.exception(
"Failed to write command %s to connection %s",
cmd.NAME,
connection,
)
else:
logger.warning("Dropping command as not connected: %r", cmd.NAME)
@ -250,3 +384,10 @@ class ReplicationCommandHandler:
def send_remote_server_up(self, server: str):
self.send_command(RemoteServerUpCommand(server))
def stream_update(self, stream_name: str, token: str, data: Any):
"""Called when a new update is available to stream to clients.
We need to check if the client is interested in the stream or not
"""
self.send_command(RdataCommand(stream_name, token, data))