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Allow background tasks to be run on a separate worker. (#8369)

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Patrick Cloke 2020-10-02 08:23:15 -04:00 • committed by GitHub
parent 462e681c79
commit 62894673e6
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19 changed files with 537 additions and 449 deletions
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17
synapse/server.py
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@ -185,7 +185,10 @@ class HomeServer(metaclass=abc.ABCMeta):
we are listening on to provide HTTP services.
"""
REQUIRED_ON_MASTER_STARTUP = ["user_directory_handler", "stats_handler"]
REQUIRED_ON_BACKGROUND_TASK_STARTUP = [
"auth",
"stats",
]
# This is overridden in derived application classes
# (such as synapse.app.homeserver.SynapseHomeServer) and gives the class to be
@ -251,14 +254,20 @@ class HomeServer(metaclass=abc.ABCMeta):
self.datastores = Databases(self.DATASTORE_CLASS, self)
logger.info("Finished setting up.")
def setup_master(self) -> None:
# Register background tasks required by this server. This must be done
# somewhat manually due to the background tasks not being registered
# unless handlers are instantiated.
if self.config.run_background_tasks:
self.setup_background_tasks()
def setup_background_tasks(self) -> None:
"""
Some handlers have side effects on instantiation (like registering
background updates). This function causes them to be fetched, and
therefore instantiated, to run those side effects.
"""
for i in self.REQUIRED_ON_MASTER_STARTUP:
getattr(self, "get_" + i)()
for i in self.REQUIRED_ON_BACKGROUND_TASK_STARTUP:
getattr(self, "get_" + i + "_handler")()
def get_reactor(self) -> twisted.internet.base.ReactorBase:
"""