From d4fb4f7c52e24c36204c6c3299dfa04cc05242c8 Mon Sep 17 00:00:00 2001 From: Richard van der Hoff Date: Tue, 28 Nov 2017 14:37:11 +0000 Subject: [PATCH] Clear logcontext before starting fed txn queue runner These processes take a long time compared to the request, so there is lots of "Entering|Restoring dead context" in the logs. Let's try to shut it up a bit. --- synapse/federation/transaction_queue.py | 10 ++++++++-- synapse/notifier.py | 17 ++++++++++------- 2 files changed, 18 insertions(+), 9 deletions(-) diff --git a/synapse/federation/transaction_queue.py b/synapse/federation/transaction_queue.py index 7a3c9cbb7..3e7809b04 100644 --- a/synapse/federation/transaction_queue.py +++ b/synapse/federation/transaction_queue.py @@ -20,7 +20,7 @@ from .persistence import TransactionActions from .units import Transaction, Edu from synapse.api.errors import HttpResponseException -from synapse.util import logcontext +from synapse.util import logcontext, PreserveLoggingContext from synapse.util.async import run_on_reactor from synapse.util.retryutils import NotRetryingDestination, get_retry_limiter from synapse.util.metrics import measure_func @@ -146,7 +146,6 @@ class TransactionQueue(object): else: return not destination.startswith("localhost") - @defer.inlineCallbacks def notify_new_events(self, current_id): """This gets called when we have some new events we might want to send out to other servers. @@ -156,6 +155,13 @@ class TransactionQueue(object): if self._is_processing: return + # fire off a processing loop in the background. It's likely it will + # outlast the current request, so run it in the sentinel logcontext. + with PreserveLoggingContext(): + self._process_event_queue_loop() + + @defer.inlineCallbacks + def _process_event_queue_loop(self): try: self._is_processing = True while True: diff --git a/synapse/notifier.py b/synapse/notifier.py index 626da778c..ef042681b 100644 --- a/synapse/notifier.py +++ b/synapse/notifier.py @@ -255,9 +255,7 @@ class Notifier(object): ) if self.federation_sender: - preserve_fn(self.federation_sender.notify_new_events)( - room_stream_id - ) + self.federation_sender.notify_new_events(room_stream_id) if event.type == EventTypes.Member and event.membership == Membership.JOIN: self._user_joined_room(event.state_key, event.room_id) @@ -297,8 +295,7 @@ class Notifier(object): def on_new_replication_data(self): """Used to inform replication listeners that something has happend without waking up any of the normal user event streams""" - with PreserveLoggingContext(): - self.notify_replication() + self.notify_replication() @defer.inlineCallbacks def wait_for_events(self, user_id, timeout, callback, room_ids=None, @@ -516,8 +513,14 @@ class Notifier(object): self.replication_deferred = ObservableDeferred(defer.Deferred()) deferred.callback(None) - for cb in self.replication_callbacks: - preserve_fn(cb)() + # the callbacks may well outlast the current request, so we run + # them in the sentinel logcontext. + # + # (ideally it would be up to the callbacks to know if they were + # starting off background processes and drop the logcontext + # accordingly, but that requires more changes) + for cb in self.replication_callbacks: + cb() @defer.inlineCallbacks def wait_for_replication(self, callback, timeout):