diff --git a/synapse/app/generic_worker.py b/synapse/app/generic_worker.py
index 2a56fe0bd5..d125327f08 100644
--- a/synapse/app/generic_worker.py
+++ b/synapse/app/generic_worker.py
@@ -960,17 +960,22 @@ def start(config_options):
synapse.events.USE_FROZEN_DICTS = config.use_frozen_dicts
- ss = GenericWorkerServer(
+ hs = GenericWorkerServer(
config.server_name,
config=config,
version_string="Synapse/" + get_version_string(synapse),
)
- setup_logging(ss, config, use_worker_options=True)
+ setup_logging(hs, config, use_worker_options=True)
+
+ hs.setup()
+
+ # Ensure the replication streamer is always started in case we write to any
+ # streams. Will no-op if no streams can be written to by this worker.
+ hs.get_replication_streamer()
- ss.setup()
reactor.addSystemEventTrigger(
- "before", "startup", _base.start, ss, config.worker_listeners
+ "before", "startup", _base.start, hs, config.worker_listeners
)
_base.start_worker_reactor("synapse-generic-worker", config)
diff --git a/synapse/replication/tcp/resource.py b/synapse/replication/tcp/resource.py
index b2d6baa2a2..33d2f589ac 100644
--- a/synapse/replication/tcp/resource.py
+++ b/synapse/replication/tcp/resource.py
@@ -17,9 +17,7 @@
import logging
import random
-from typing import Dict
-
-from six import itervalues
+from typing import Dict, List
from prometheus_client import Counter
@@ -71,29 +69,28 @@ class ReplicationStreamer(object):
def __init__(self, hs):
self.store = hs.get_datastore()
- self.presence_handler = hs.get_presence_handler()
self.clock = hs.get_clock()
self.notifier = hs.get_notifier()
- self._server_notices_sender = hs.get_server_notices_sender()
self._replication_torture_level = hs.config.replication_torture_level
- # List of streams that clients can subscribe to.
- # We only support federation stream if federation sending hase been
- # disabled on the master.
- self.streams = [
- stream(hs)
- for stream in itervalues(STREAMS_MAP)
- if stream != FederationStream or not hs.config.send_federation
- ]
+ # Work out list of streams that this instance is the source of.
+ self.streams = [] # type: List[Stream]
+ if hs.config.worker_app is None:
+ for stream in STREAMS_MAP.values():
+ if stream == FederationStream and hs.config.send_federation:
+ # We only support federation stream if federation sending
+ # hase been disabled on the master.
+ continue
- self.streams_by_name = {stream.NAME: stream for stream in self.streams}
+ self.streams.append(stream(hs))
- self.federation_sender = None
- if not hs.config.send_federation:
- self.federation_sender = hs.get_federation_sender()
+ self.streams_by_name = {stream.NAME: stream for stream in self.streams}
- self.notifier.add_replication_callback(self.on_notifier_poke)
+ # Only bother registering the notifier callback if we have streams to
+ # publish.
+ if self.streams:
+ self.notifier.add_replication_callback(self.on_notifier_poke)
# Keeps track of whether we are currently checking for updates
self.is_looping = False
|
